CN111900787A - Power supply debugging method for communication power supply transformation of ultrahigh voltage transformer substation - Google Patents

Abstract

The present application relates to a power supply debugging method used for the transformation of communication power supply in an ultra-high voltage substation. The method includes: connecting a temporary power supply to the communication power supply in parallel; supplying power to the power load of the communication power supply; disconnecting the circuit connection of the communication power supply, and replacing the rectifier module and the power supply monitoring unit of the communication power supply with a power supply subrack. This application realizes the transformation of the old power supply without power supply. During the process of removing the rectifier module and the power monitoring unit on the communication power supply, the power supply load is powered by the temporary power supply, and the power supply frame is used to replace the core components of the original power supply; the original power distribution is retained. And the load power supply cable, reduce the re-layout of the cable, ensure the normal operation of the load, minimize the risk of transformation, maximize the use of the original power rack, and solve the problem of insufficient on-site space.

Description

Power supply debugging method for communication power supply transformation of ultra-high voltage substations

technical field

The application relates to the field of ultra-high voltage, and in particular, to a power supply debugging method used for the transformation of communication power supply of ultra-high voltage substations.

Background technique

The communication power supply is the main power supply equipment of the substation, and the safe and stable operation of the equipment is directly related to the operation safety of the substation. The operating efficiency of the overdue communication power supply is much lower than that of the normal power supply, so it is necessary to update and replace the overdue communication power supply.

During the transformation of the communication power supply in the ultra-high voltage substation (eg 500 kV), the debugging of the power supply affects the safety of the transformation of the communication power supply and whether the communication power supply can be successfully transformed. Based on this, in order to solve the above-mentioned problems in the transformation of the communication power supply of the ultra-high voltage substation, it is urgent to carry out technical transformation.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problem or at least partially solve the above-mentioned technical problem, the present application provides a power supply debugging method for the reconstruction of communication power supply of an ultra-high voltage substation.

The present application provides a power supply debugging method for communication power transformation of an ultra-high voltage substation, and the power supply debugging method includes:

Connect the temporary power supply to the communication power supply in parallel;

Powering on the temporary power supply, and in the case of verifying that the temporary power supply is available, supplying power to the power load of the communication power supply through the temporary power supply;

Disconnect the circuit connection of the communication power supply, and replace the rectifier module and the power supply monitoring unit of the communication power supply with a power supply subrack.

Optionally, the supplying power to the power load of the communication power supply through the temporary power supply includes:

Adjust the output voltage of the temporary power supply according to a preset first output voltage setting value; wherein the first output voltage setting value is higher than the output voltage of the communication power supply and reaches a preset first threshold value;

The load current of the communication device is diverted to the temporary power source according to the adjustment.

Optionally, the adjusting the output voltage of the temporary power supply according to the preset first output voltage setting value includes:

According to the first output voltage setting value and the preset first adjustment gradient, the output voltage of the temporary power supply is gradually adjusted.

Optionally, after disconnecting the circuit connection of the communication power supply and replacing the rectifier module and power supply monitoring unit of the communication power supply with a power supply subrack, the method includes:

closing the main switch of the power supply module of the communication power supply, and sequentially closing the power distribution switches of each rectifier module of the power supply subrack;

Detect the working status of each rectifier module of the power subrack;

It is determined whether each rectifier module of the power supply subrack meets a preset normal use standard according to the working state.

Optionally, the power supply debugging method further includes:

Adjust the output voltage of each rectifier module of the power supply frame according to a preset second output voltage setting value; wherein the second output voltage setting value is higher than the output voltage of the temporary power supply and reaches a preset first two thresholds;

According to the adjustment, the load current of the temporary power supply is transferred to each rectifier module of the power supply subrack.

Optionally, the adjusting the output voltage of each rectifier module of the power supply subrack according to the preset second output voltage setting value includes:

According to the second output voltage setting value and the preset second adjustment gradient, the output voltage of each rectifier module of the power subrack is adjusted.

Optionally, the power supply debugging method further includes:

detecting the output voltage of the power subrack;

In the case of the output undervoltage, the AC power supply branch of the power supply subrack and the DC power supply branch in the communication power supply are processed according to a preset processing manner.

Optionally, the preset processing method includes:

Check whether the rectifier module of the power subrack has an output voltage, and confirm whether the rectifier module of the power subrack is normal according to the inspection result.

Optionally, the power supply debugging method further includes:

When it is checked that the rectifier module of the power subrack has no output voltage, one or more of the following checks are performed on the AC power supply branch of the power supply subrack and the DC power supply branch in the communication power supply:

Check whether the connection between the power supply subrack and the DC power supply branch in the communication power supply is reliable;

Confirm whether there is a break or fault in the connecting copper bars, circuit breakers or cables;

Turn off the power supply monitoring unit of the power supply subrack, and restart the rectifier module of the power supply subrack, so as to exclude the rectifier module from being erroneously controlled by the power supply monitoring unit;

Check whether the load output of the power supply subrack and the DC power supply branch in the communication power supply are short-circuited or overloaded, so as to eliminate the output short-circuit fault or the DC output branch fault.

Optionally, when it is detected that the DC power supply branch in the communication power supply is faulty, it is handled in one or more of the following ways:

Check and eliminate the short-circuit fault point of the DC power supply branch in the communication power supply, and re-close the circuit breaker or replace the new fuse;

When a circuit breaker failure or a fuse failure is detected, replace other backup branches;

When it is detected that the power monitoring unit incorrectly controls the normally closed contactor fault, remove the control wire of the power monitoring unit;

When it is detected that the power monitoring unit miscontrols the normally open contactor fault, the control branch is forcibly turned on.

Compared with the prior art, the above-mentioned technical solutions provided in the embodiments of the present application have the following advantages:

The method provided by the embodiment of the present application realizes the transformation of the old power supply without interruption. During the process of removing the rectifier module and the monitoring unit on the power supply, the power supply load is powered by the temporary power supply, and the power supply frame is used to replace the core components of the original power supply; The original power distribution and load power supply cables can reduce the re-layout of cables, ensure the normal operation of the load, minimize the risk of transformation, maximize the use of the original power supply rack, and solve the problem of insufficient on-site space; During the process, the debugging of the temporary power supply can effectively ensure the safety of the transformation process and improve the reliability of the transformation.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. In other words, on the premise of no creative labor, other drawings can also be obtained from these drawings.

FIG. 1 is a flowchart of a method for transforming a communication power supply provided by various embodiments of the present application.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

In the following description, suffixes such as 'module', 'component' or 'unit' used to represent elements are used only to facilitate the description of the present invention and have no specific meaning per se. Thus, "module", "component" or "unit" may be used interchangeably.

An embodiment of the present invention provides a power supply debugging method for communication power transformation of an ultra-high voltage substation. As shown in FIG. 1 , the power supply debugging method includes:

S101, connect the temporary power supply to the communication power supply in parallel;

S102, power on the temporary power supply, and in the case of verifying that the temporary power supply is available, supply power to the power load of the communication power supply through the temporary power supply;

S103, disconnect the circuit connection of the communication power supply, and replace the rectifier module and the power supply monitoring unit of the communication power supply with a power supply subrack.

The embodiment of the present invention realizes uninterrupted transformation of the old power supply. During the process of removing the rectifier module and the monitoring unit on the power supply, the power supply load is powered by the temporary power supply, and the power supply frame is used to replace the core components of the original power supply; the original power distribution is retained. and load power supply cables, reduce the re-layout of cables, ensure the normal operation of the load, minimize the risk of transformation, maximize the use of the original power supply rack, and solve the problem of insufficient on-site space; The debugging of the power supply can effectively ensure the safety of the transformation process and improve the reliability of the transformation.

Among them, the communication power supply is equipped with 6 30A original rectifier modules (ie, old rectifier modules) and 1 power supply monitoring unit (old power supply monitoring unit), and the load current of each communication power supply is about 45A. The two-way AC input of the communication power supply is powered by the AC main power supply under normal conditions. When the main power supply fails, it is automatically switched to the AC backup power supply through the contactor.

The transformation scheme of the embodiment of the present invention can ensure that the DC load is not powered off, and the AC load is not powered off. When the main switch of the power module of the communication power supply is closed or disconnected, it will not affect the power supply of the AC load. The main switch of the power module at the AC input end of the communication power supply is connected to the AC input of the power supply frame to realize the AC uninterrupted power supply during the reconstruction process.

Therefore, it is necessary to check the operation of the communication power supply that needs to be transformed before the implementation of the transformation, and then carry out the transformation after ensuring that the power supply works normally. The measurement and judgment methods are as follows:

Measure whether the two-way AC input voltage is normal to ensure that the backup power supply can be supplied normally;

Measure two AC input currents, the one with current is the main switch, and the one without current is the backup switch, which can effectively prevent the switch from being disconnected by mistake due to on-site labels;

Then in the communication power supply and connecting to the temporary power supply, including:

The communication power supply is detected; the input end of the communication power supply is provided with a power supply module master switch, the power supply module master switch includes a main switch and a backup switch, and the main switch is used to connect to the AC power of the main power supply , the standby switch is used to access the alternating current of the standby power supply;

Determine the main switch and the standby switch from the main switch of the power module according to the detection;

Disconnecting the backup switch, and cutting off the load cable between the backup switch and the device being communicated;

The input end of the temporary power supply is connected to the standby switch, and the output end of the temporary power supply is connected to the communication equipment of the ultra-high voltage substation through the positive and negative busbars of the power supply rack.

After the temporary power supply is connected, it is necessary to debug the temporary power supply, for example:

Debug the temporary power rectifier module to verify the availability of the temporary power supply; eliminate the abnormal alarm of the temporary power supply; measure whether the DC output of the temporary power supply is normal, adjust the output voltage, and the measured voltage is consistent with the setting; set the output voltage of the temporary power supply (preset The first output voltage setting value), so that the output voltage of the temporary power supply is 0.2V higher than the output voltage of the communication power supply (the preset first threshold value);

Adjust the output voltage of the temporary power supply, and increase it by 0.1V each time (the preset first adjustment gradient) until all the load current is transferred to the temporary power supply.

That is, the supplying power to the power load of the communication power supply through the temporary power supply includes:

Adjust the output voltage of the temporary power supply according to a preset first output voltage setting value; wherein the first output voltage setting value is higher than the output voltage of the communication power supply and reaches a preset first threshold value;

The load current of the communication device is diverted to the temporary power source according to the adjustment.

Optionally, the adjusting the output voltage of the temporary power supply according to the preset first output voltage setting value includes:

According to the first output voltage setting value and the preset first adjustment gradient, the output voltage of the temporary power supply is gradually adjusted.

Based on the above transformation process, the original rectifier module and the original power monitoring unit of the communication power supply can be removed, and a new power supply subrack can be installed. E.g:

Turn off the power distribution switch of the communication power module and the main switch of the module, and use a multimeter to confirm that the upper end of the main air switch of the module and the input end of the module switch have no power;

Turn off the switch of the original power supply monitoring unit; at this point, the original rectifier module of the communication power supply, the power supply monitoring unit and the AC and DC power distribution of the communication power supply have been physically isolated, and the preparations for the next dismantling work are ready, and further dismantling and transformation can be started.

After the original rectifier module and the power supply components of the original power monitoring unit are removed, install the power supply subrack. Before installation, measure whether the power supply subrack and its size can be installed in the power supply cabinet, and check the DC copper bars at the rear of the power supply and the structural parts of the power supply cabinet in real time. distance, place the power subrack on the ZTE power module support plate, and slowly push the power subrack into the cabinet;

Connect the AC cables of the power subrack, connect the three-phase live wire to the main switch of the communication power module, connect the neutral wire and ground wire to the zero row and ground row of the power cabinet, and connect the DC cables of the power subrack. The two cables are connected to the positive and negative busbars of the power cabinet, and at the same time, one more cable is drawn from the negative row, which needs to be connected to the copper bars of the new capacity expansion switch later; The switch branch is installed on the power rack with guide rails, and the copper bar of the expansion branch switch and the negative row of the power supply frame are connected by cables. At the same time, the number of positive terminals is increased, and a copper row is connected to the positive row of the power cabinet. The screw holes are added on the top to facilitate the subsequent increase of the load;

Connect the load branch switch status monitoring signal line, battery current detection signal line, SPD status monitoring signal line, and load power-off signal line to the control terminals of the power subrack one by one, and then bundle the new signal lines to connect the The original signal line of the communication power cabinet is removed;

That is, in some embodiments, the removing the communication power supply from the power supply rack may include:

Disconnecting the power distribution switch and the main switch of the communication power supply, the communication power supply comprising a power monitoring unit and a plurality of rectifier modules;

turning off the power monitoring unit;

removing the power supply monitoring unit and the plurality of rectifier modules from the power supply rack.

Optionally, the connecting the input end of the power supply subrack to the alternating current and connecting the output end of the power supply subrack to the communication equipment of the ultra-high voltage substation may include:

connecting the input end of the power supply frame to the main switch,

disconnecting the temporary power supply, removing the positive and negative busbars from the temporary power supply;

Connect the positive and negative poles of the output end of the power supply sub-frame to the positive and negative busbars, respectively, and connect with the communication equipment of the ultra-high voltage substation through the positive and negative busbars;

One or more cables are drawn out from the negative bus bar, and the cables are used to connect the capacity expansion switch.

At this point, the installation of the power subrack is complete, and you can continue to the next step of debugging. That is to say, after disconnecting the circuit connection of the communication power supply and replacing the rectifier module and the power supply monitoring unit of the communication power supply with a power supply subrack, the steps include:

closing the main switch of the power supply module of the communication power supply, and sequentially closing the power distribution switches of each rectifier module of the power supply subrack;

Detect the working status of each rectifier module of the power subrack;

It is determined whether each rectifier module of the power supply subrack meets a preset normal use standard according to the working state.

The power supply debugging method further includes:

Adjust the output voltage of each rectifier module of the power supply frame according to a preset second output voltage setting value; wherein the second output voltage setting value is higher than the output voltage of the temporary power supply and reaches a preset first two thresholds;

According to the adjustment, the load current of the temporary power supply is transferred to each rectifier module of the power supply subrack.

Specifically, the adjusting the output voltage of each rectifier module of the power subrack according to the preset second output voltage setting value may include:

According to the second output voltage setting value and the preset second adjustment gradient, the output voltage of each rectifier module of the power subrack is adjusted.

For example, debugging a power subrack can include:

Turn on the main switch of the power module, turn on the power distribution switch of the rectifier module of the power subrack in turn, and observe the working status of all modules;

Observe whether there is an alarm in the power supply, and check if there is an alarm;

Set parameters such as power supply floating voltage, number and capacity of battery packs, shunt parameters, power-off mode and voltage, and equalizing cycle;

Set the power supply voltage so that the output voltage is 0.2V higher than the output voltage of the backup power supply (the second threshold);

Adjust the output voltage of the power supply frame, and increase it by 0.1V each time (the second adjustment gradient), until all the load current is transferred to the power supply frame;

Disconnect the backup power switch, remove the backup power cable, reconnect the backup switch cable, close the switch, and the transformation is complete.

Wherein, in some embodiments, some emergency situations need to be dealt with during the transformation process. For example, in the process of removing the communication power supply, the battery of the DC power supply cabinet is used as the backup power supply of the temporary power supply, and the A battery is connected to the communication device.

Specifically, detecting the output voltage of the power supply frame;

In the case of the output undervoltage, the AC power supply branch of the power supply subrack and the DC power supply branch in the communication power supply are processed according to a preset processing manner.

The preset processing methods include:

Check whether the rectifier module of the power subrack has an output voltage, and confirm whether the rectifier module of the power subrack is normal according to the inspection result.

When it is checked that the rectifier module of the power subrack has no output voltage, one or more of the following checks are performed on the AC power supply branch of the power supply subrack and the DC power supply branch in the communication power supply:

Check whether the connection between the power supply subrack and the DC power supply branch in the communication power supply is reliable;

Confirm whether there is a break or fault in the connecting copper bars, circuit breakers or cables;

Turn off the power supply monitoring unit of the power supply subrack, and restart the rectifier module of the power supply subrack, so as to exclude the rectifier module from being erroneously controlled by the power supply monitoring unit;

Check whether the load output of the power supply subrack and the DC power supply branch in the communication power supply are short-circuited or overloaded, so as to eliminate the output short-circuit fault or the DC output branch fault.

When the fault of the DC power supply branch in the communication power supply is detected, it is handled in one or more of the following ways:

Check and eliminate the short-circuit fault point of the DC power supply branch in the communication power supply, and re-close the circuit breaker or replace the new fuse;

When a circuit breaker failure or a fuse failure is detected, replace other backup branches;

When it is detected that the power monitoring unit incorrectly controls the normally closed contactor fault, remove the control wire of the power monitoring unit;

When it is detected that the power monitoring unit miscontrols the normally open contactor fault, the control branch is forcibly turned on.

In detail, in the event of an AC power failure, the following processing steps can be adopted:

(1) When the temporary power supply circuit is out of power during the transformation, stop the transformation immediately, switch the temporary power supply to another mains power supply, and restore the temporary power module to work as soon as possible to reduce the battery power supply time.

(2) If there is a sudden power failure in the lighting of the computer room during the transformation, stop the transformation immediately, especially in the case of tightening the screws on the live busbar, the operating tools and hands should remain in the original state, and do not allow loosening or shaking. Other members are responsible for turning on the emergency lights, and the construction workers continue to complete the remaining uninterrupted work.

When the DC busbar/cable is short-circuited, the following steps can be taken:

According to the responsibilities and division of labor, the emergency handling members are responsible for the control of the main AC gate of the computer room, the control of the AC power distribution, and the control and maintenance of the protection-related equipment.

In severe cases, the DC short-circuit accident will cause the short-circuit point to melt, the battery or the corresponding loop load fuse to blow, and the short-circuit accident will be automatically controlled. If a fire caused by a short circuit is used to quickly extinguish the fire caused by the short circuit, the circuit that caused the short circuit accident should be checked, the short circuit fault should be eliminated, and the function of the holding device should be replaced or restored, and the work should be restarted. Use modules or other backup power sources and batteries to directly supply important loads.

When the inside of the equipment is abnormally high temperature, take the following steps:

(1) Prepare fire-fighting measures and pay attention to heat dissipation in the computer room.

(2) Take temporary emergency measures urgently. Emergency start the backup power supply or switch to the backup tributary to cut off the circuit of the high temperature part circuit. Including but not limited to the following:

Close the abnormally high temperature module;

If the AC cabinet is abnormally high, switch to the backup AC power supply;

If a branch of the DC screen is high temperature, select the backup DC branch;

If the local busbar is high temperature, the backup power supply or DC screen should be considered to share the load and quickly reduce the high temperature busbar load;

If the battery is faulty, the branch circuit of the faulty battery should be cut off urgently.

When the system output is under voltage, the following processing steps can be taken:

detecting the output voltage of the power subrack;

When the output voltage is under-voltage, the power supply subrack and the DC power supply are processed according to the preset emergency handling method for faults of the DC output branch or the emergency handling method for AC power failure. Specifically include:

(1) First check whether the rectifier module has output, and confirm whether the rectifier module is normal.

(2) If the rectifier module has no output, first check whether the AC input is normal. Troubleshoot AC faults. If the AC fault conditions are met, the corresponding DC output branch fault emergency response plan or AC power failure emergency response plan will be activated.

(3) Check whether the connection between the rectifier cabinet and the DC power distribution cabinet is reliable, confirm whether there is a breakpoint or fault in the connecting copper bars, circuit breakers, cables, etc., and eliminate the cause of the breakpoint or poor contact.

(4) Turn off the monitoring unit and restart the rectifier module to prevent the rectifier module from being miscontrolled by monitoring. If it is confirmed that the monitoring is caused by incorrect control, check the monitoring parameter settings, real-time data (AC, DC, temperature, module and other data information) and control functions.

(5) Check whether the load output and the battery branch are short-circuited or overloaded, and eliminate the output short-circuit fault point or the output branch fault.

Among them, when the DC output branch is faulty, the following processing steps can be adopted:

(1) If the branch circuit is short-circuited, check and eliminate the short-circuit fault point, re-close the circuit breaker or replace the new fuse.

(2) If the circuit breaker fails or the fuse fails, replace other backup branches.

(3) If it is a fault of the normally closed contactor that is miscontrolled by monitoring, it is only necessary to remove the monitoring control line.

(4) If it belongs to the fault of the normally open contactor that is monitored and controlled incorrectly, the control branch should be forcibly turned on.

During the transformation process of the embodiment of the present invention, a temporary power supply is newly connected in parallel to provide power supply to form a dual power supply guarantee for the temporary power supply and the battery. During the transformation process, the DC load is not powered off without interruption; for some old power supplies that contain the main switch of the rectifier module, the transformation will not work. cause a power outage;

The embodiment of the present invention effectively guarantees the safety of the transformation process and improves the reliability of the transformation by debugging the temporary power supply and the subrack power supply during the transformation process;

The modification cost of the embodiment of the present invention is relatively low, only the rectifier module and the monitoring unit are modified, and all other components are used;

The embodiment of the present invention saves energy consumption, the working efficiency of the newly replaced rectifier module is above 95%, and the efficiency of the old module is generally lower than 90%;

In the embodiment of the present invention, individual requirements can be customized. Since the existing problems of different sites are different, according to individual differences, individual configuration can be customized in the power supply transformation. Meet the new load demand in the station.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages or disadvantages of the embodiments.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the scope of protection of the present invention and the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (10)

1. A power supply debugging method for communication power supply transformation of an extra-high voltage transformer substation is characterized by comprising the following steps:

connecting the temporary power supply to the communication power supply in parallel;

powering up the temporary power supply, and under the condition that the temporary power supply is verified to be available, supplying power to a power load of the communication power supply through the temporary power supply;

and disconnecting the circuit connection of the communication power supply, and replacing the rectifying module and the power supply monitoring unit of the communication power supply with a power supply plug frame.

2. The power supply debugging method of claim 1, wherein the powering of the power supply load of the communication power supply by the temporary power supply comprises:

adjusting the output voltage of the temporary power supply according to a preset first output voltage set value; the first output voltage set value is higher than the output voltage of the communication power supply and reaches a preset first threshold value;

transferring the load current of the communication device to the temporary power supply in accordance with the adjustment.

3. The power supply debugging method according to claim 2, wherein the adjusting the output voltage of the temporary power supply according to the preset first output voltage set value comprises:

and gradually adjusting the output voltage of the temporary power supply according to the first output voltage set value and a preset first adjustment gradient.

4. The power supply debugging method according to any one of claims 1 to 3, wherein after disconnecting the circuit of the communication power supply and replacing the rectifying module and the power supply monitoring unit of the communication power supply with a power supply plug-in frame, the method comprises:

closing a power module main switch of the communication power supply, and sequentially closing a power distribution switch of each rectification module of the power supply inserting frame;

detecting the working state of each rectification module of the power supply plug frame;

and determining whether each rectification module of the power supply plug frame reaches a preset normal use standard or not according to the working state.

5. The power source debugging method of claim 4, further comprising:

adjusting the output voltage of each rectifying module of the power supply inserting frame according to a preset second output voltage set value; the second output voltage set value is higher than the output voltage of the temporary power supply and reaches a preset second threshold value;

and transferring the load current of the temporary power supply to each rectifying module of the power supply plug frame according to the adjustment.

6. The power supply debugging method according to claim 5, wherein the adjusting the output voltage of each rectifying module of the power supply plug frame according to the preset second output voltage set value comprises:

and adjusting the output voltage of each rectifying module of the power supply inserting frame according to the second output voltage set value and a preset second adjusting gradient.

7. The power source debugging method of claim 5, further comprising:

detecting the output voltage of the power supply inserting frame;

and under the condition of undervoltage output, processing the alternating current power supply branch of the power supply plug frame and the direct current power supply branch in the communication power supply according to a preset processing mode.

8. The power supply debugging method of claim 7, wherein the preset processing manner comprises:

and checking whether the output voltage exists in the rectifying module of the power plug-in frame or not, and confirming whether the rectifying module of the power plug-in frame is normal or not according to the checking result.

9. The power source debugging method of claim 8, further comprising:

when no output voltage of the rectifying module of the power plug-in frame is detected, one or more of the following checks is performed on an alternating current power branch of the power plug-in frame and a direct current power branch of the communication power supply:

checking whether the connection between the power supply plug frame and a direct-current power supply branch in the communication power supply is reliable or not;

confirming whether a connecting copper bar, a circuit breaker or a cable has a breakpoint or a fault;

turning off a power supply monitoring unit of the power supply inserting frame, and restarting a rectifying module of the power supply inserting frame to eliminate the rectifying module from being controlled by the power supply monitoring unit;

and checking whether the load output of the power plug frame and a direct current power supply branch circuit in the communication power supply have short circuit or overload or not so as to eliminate output short circuit faults or direct current output branch circuit faults.

10. The power supply debugging method of claim 9, wherein when a fault is detected in a dc power branch in the communication power supply, the fault is handled in one or more of the following ways:

checking and eliminating short-circuit fault points of a direct-current power supply branch in the communication power supply, and reclosing a circuit breaker or replacing a new fuse;

when the circuit breaker fault or the fuse fault is detected, replacing other standby branches;

when the fault of the normally closed contactor controlled by the power supply monitoring unit by mistake is detected, the control line of the power supply monitoring unit is removed;

and when the fault of the normally open contactor controlled by the power supply monitoring unit by mistake is detected, the control branch is forcibly switched on.

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