CN107508733A - A kind of transformer station's graph gateway machine communication failure detecting system and method - Google Patents

Abstract

The present invention proposes a kind of transformer station's graph gateway machine communication failure detecting system and method, including graph gateway machine, TT＆C system and dispatching terminal, for differentiating whether the communication between graph gateway machine and the preposition gateway for dispatching end system is normal, TT＆C system sends test signal, test signal sends dispatching terminal to by graph gateway machine, when the signal in the TT＆C system, graph gateway machine, dispatching terminal is consistent, represents that communication is normal, otherwise, communication failure is represented；The present invention carries out live judgement to the communication issue of graph gateway machine, and job costs are saved for secondary person works, improves security, the stability of equipment operation, and solid foundation has been established for production safety.

Description

A communication fault detection system and method for substation graphic gateway machine

technical field

The invention belongs to the technical field of substation fault detection, and in particular relates to a communication fault detection system and method of a substation graphical gateway machine.

Background technique

According to the requirements of the State Grid Corporation's three-episode five-big "big operation" plan, "direct transmission of alarms and remote browsing" is a basic technical principle and also meets the basic needs of the construction of "integrated regulation and control" of the power grid. Realize remote browsing of substation graphics and real-time data, and check the operation data of the substation integrated monitoring system, including various original information such as equipment status, historical records, operation records, and comprehensive fault analysis results.

The graphic gateway machine is used for direct transmission of alarms and graphic browsing. The remote signaling, telemetry and graphic information in the collection station are directly uploaded to the dispatcher to realize remote browsing of substation graphics and real-time data, ensuring the effect of centralized browsing of monitoring screens, and viewing the integrated monitoring system of substations. operating data. Alarm direct transmission means that the real-time alarm information of the substation system is directly transmitted to the alarm window of the main station through a dedicated channel after screening, processing, and optimization. Operators and control personnel can monitor the primary equipment and secondary equipment failure of the substation immediately through the alarm window state. Figure 1 shows the implementation process of the existing graphics gateway machine alarm direct transmission.

Graphical gateway machine is a newly added device in the "Three Sets and Five Majors". Due to the imperfect design of the equipment and the lack of self-inspection function, when the graphic gateway machine forwards data to the front-end gateway of the dispatching end system, the dispatching system cannot judge and distinguish Whether the communication process is normal or not; dispatchers and substation operation and maintenance personnel cannot be sure, and secondary personnel need to go to the site to conduct experiments to confirm. If the communication problem of the graphics gateway machine is solved, the number of inspections and confirmations by members of the maintenance team can be greatly reduced. Especially when the substation is far away, it can save huge manpower, material resources and financial resources.

Contents of the invention

In order to solve the above problems, the present invention proposes a method for judging the communication failure of the graphics gateway machine to meet the technical needs of the operation of the graphics gateway machine. If the communication is normal, it can be quickly restored. The normal and stable operation of the automation system.

Technical scheme of the present invention is as follows:

A substation graphics gateway machine communication failure detection system, including a graphics gateway machine, a measurement and control system, and a dispatching terminal, used to judge whether the communication between the graphics gateway machine and the pre-gateway of the dispatching end system is normal, characterized in that the measurement and control The system sends out a test signal, and the test signal is transmitted to the dispatcher through the graphics gateway.

When the test signal sent by the measurement and control system, the signal output by the graphics gateway, and the signal received by the dispatching end are consistent, it means that the communication is normal; otherwise, it means that the communication is faulty.

The test signal is a newly added signal, which does not change the original operating status of each equipment in the substation.

The measurement and control system is installed at the standby position of the graphic gateway machine screen.

The measurement and control system also includes a status display light.

A communication failure detection method of a substation graphic gateway machine, used to judge whether the communication between the graphic gateway machine and the front-end gateway of the dispatching end system is normal, it is characterized in that it includes the following steps:

(1) The measurement and control system sends a test signal to the graphics gateway;

(2) The graphics gateway machine receives the test signal and transmits it to the dispatcher;

(3) Determine whether the signals of the measurement and control system, the graphics gateway and the dispatching terminal are consistent.

The present invention has the following advantages:

The invention uses a new method to judge the communication problem of the graphics gateway on site, saves work costs for secondary personnel, improves the safety and stability of equipment operation, and lays a solid foundation for production safety.

Description of drawings

Fig. 1 is the realization process of the direct transmission of the alarm of the graphic gateway machine in the prior art;

Fig. 2 is a schematic diagram of the communication failure detection system of the graphic gateway machine;

Fig. 3 is a scene diagram of the communication failure detection system of the graphic gateway machine.

detailed description

The present invention will be described below in conjunction with specific embodiments, and each embodiment is only used to illustrate the technical solution of the present invention, not to limit it.

Fig. 2 is a schematic diagram of the fault detection system of the present invention, in which an alarm test signal function is added in the substation, a test signal is sent out, and the dispatcher receives it to verify whether the communication is normal. Adding the signal test function to the graphics gateway is based on the existing graphics gateway, without changing the original structure and function of the graphics gateway, but making it generate an alarm signal, which is forwarded and uploaded by the graphics gateway through the alarm signal To the dispatcher, the dispatcher will feed back the alarm signal information.

The advantages of adopting this scheme are: 1. Small size and easy installation. 2. Do not destroy the structure and function of the graphic gateway machine and the pre-gateway at the scheduling end. 3. It is less difficult to realize. The disadvantage is that it requires personnel participation to verify communication.

In terms of structure selection, combined modules are used to generate modules in a combined form, and the various parts of the modules are used in conjunction with each other. It can be transmitted from the measurement and control system to the graphics gateway with the help of the measurement and control system, and then the signal is sent. It is necessary to increase the connection path between the modules, no signal generator is allowed, the cost is low, and the common measurement and control information path retains the original system structure, which is more stable.

In the selection of the signal acquisition method, a state information displacement device is added to generate displacement information. A new status signal is added without changing the status of the original operating equipment, which has high security and is more stable and reliable. The disadvantage is that it is complicated and new devices need to be added.

In terms of path selection, the communication channel is used together with the measurement and control system, and the test signal generated by the alarm signal test function is uploaded by the measurement and control system to the dispatcher through the graphics gateway. Strong practicability, public communication channel, easy to implement.

In the installation position, install the alarm signal test function in the standby position of the graphic gateway machine screen. High practicability, when the communication channel needs to be verified, it can be operated directly at the graphics gateway. Intuitive, not easy to misuse.

In the signal trigger mode, the alarm test signal is triggered by the handle, which can generate a self-holding signal, which is stable and difficult to change the state, but the cost is high.

In the display mode, use the status indicator to display the signal status of the alarm signal test module.

Figure 3 is a scene diagram of the graphic gateway communication fault detection system. The cable specification for the test signal is: 4*2.5 cables, which meet the signal transmission requirements. Connect the graphic gateway machine, the alarm signal test function module and the measurement and control device through the cable, and the screen cabinet is connected correctly. By selecting the cable path and the installation location, the impact of the installed test module on the original system is minimized. And increase the indicator light to increase visibility.

Use the new test method to transmit test signals, and the dispatcher will confirm the signals, and confirm that the signals at the following positions are consistent:

(1) Graphical gateway machine;

(2) Background monitor signal;

(3) Dispatching terminal optical words and messages;

When the test signal sent by the measurement and control system, the signal output by the graphics gateway, and the signal received by the dispatching end are consistent, it means that the communication is normal; otherwise, it means that the communication is faulty.

Carrying out on-site investigation and statistical records of the actual conditions of each substation in the Luoyang branch, the results show that after installing the substation graphic gateway machine communication fault detection system of the present invention, the number of on-site inspections and confirmations due to the graphic gateway machine abnormality has increased from 17 times Reduced to 1 time, the correct judgment rate was 100%, and the expected goal was achieved.

Finally, it should be noted that: the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention range.

Claims (8)

1. a kind of substation graphic gateway machine communication failure detection system, comprises graphic gateway machine, measurement and control system and dispatching end, is used for discriminating whether the communication between the front-end gateway of graphic gateway machine and dispatching end system is normal, it is characterized in that, all The measurement and control system sends a test signal, and the test signal is transmitted to the dispatcher through the graphics gateway. 2. The substation graphics gateway machine communication failure detection system according to claim 1, wherein when the test signal sent by the measurement and control system, the signal output by the graphics gateway machine, the signal received by the dispatching terminal When the three signals are consistent, it means that the communication is normal, otherwise, it means that the communication is faulty. 3. The substation graphical gateway machine communication fault detection system according to claim 1, characterized in that the test signal is a newly added signal, which does not change the original operating status of each equipment in the substation. 4. The substation graphic gateway machine communication fault detection system according to claim 1, characterized in that the measurement and control system is installed at the standby position of the graphic gateway machine screen. 5. The substation graphic gateway machine communication failure detection system according to claim 4, characterized in that the measurement and control system further includes a status display lamp. 6. a substation graphics gateway machine communication failure detection method, used to judge whether the communication between the graphics gateway machine and the pre-gateway of the dispatching end system is normal, it is characterized in that, comprising the steps: (1) The measurement and control system sends a test signal to the graphics gateway; (2) The graphics gateway machine receives the test signal and transmits it to the dispatcher; (3) Determine whether the signals of the measurement and control system, the graphics gateway and the dispatching terminal are consistent. 7. The communication failure detection method of substation graphic gateway machine according to claim 6, characterized in that, when the test signal sent by the measurement and control system, the signal output by the graphic gateway machine, the signal received by the dispatching terminal When the three signals are consistent, it means that the communication is normal, otherwise, it means that the communication is faulty. 8. The method for detecting communication failures of substation graphical gateways according to claim 6, wherein the test signal is a newly added signal, and does not change the original operating status of each equipment in the substation.