CN1835166A - Multifunction tripping device - Google Patents

Abstract

Being in use for breaker, the multifunctional trip includes power supply module, sampling module, CPU, communication module as well as one or more modules selected from following functional modules: shunted exciter, switching in, and under voltage. Technical scheme of the invention combines three general functions of trip for breaker: shunted exciter, switching in, and under voltage tripping, and controls the functions by CPU so that control is simple and resources are saved. Moreover, communication module is added to the disclosed multifunctional trip. Whole physical volume is smaller.

Description

Multi-function release

technical field

The invention relates to a tripper for a circuit breaker, more specifically, to a multifunctional tripper with communication functions and combined with the functions of shunt excitation, closing and undervoltage tripping.

Background technique

Shunt excitation, closing and undervoltage tripping are three commonly used functions in a release for a circuit breaker. In the prior art, the above three functions are separate devices, each with its own control device. The disadvantage of this method is that the three devices are not related to each other, resulting in waste of resources and space. At the same time, since the three devices do not have communication functions, they cannot communicate with the control computer through the communication bus.

Contents of the invention

The object of the present invention is a multifunctional release with communication function and combined with the functions of shunt excitation, closing and undervoltage tripping.

According to the present invention, a multi-functional release is provided, which is used in a circuit breaker, including: a power supply module, which provides power; a sampling module, which performs high-frequency sampling of the voltage; a CPU, connected with the sampling module, and receiving the sampling The voltage signal collected by the module is analyzed and calculated; the communication module is connected to the CPU and also connected to the communication bus to realize the data communication between the CPU and the communication bus; it also includes one or more selected from the following components: shunt function Module, connected to the CPU, after the communication module receives the shunt excitation signal from the communication bus; notify the CPU, and the CPU sends an instruction to make the shunt excitation function module act; the closing function module is connected to the CPU After the communication module receives the switch-on signal from the communication bus; notify the CPU, and the CPU sends an instruction to make the switch-on function module act; the undervoltage function module is connected to the CPU, and the CPU The voltage signal collected by the sampling module sends an instruction to the undervoltage functional module to trip, pull in or hold.

According to an embodiment of the present invention, the shunt function module includes a shunt control module and a shunt electromagnet, the shunt control module is connected to the CPU to receive instructions, and the shunt electromagnet acts according to the instructions.

According to an embodiment of the present invention, the closing function module includes a closing control module and a closing electromagnet, the closing control module is connected to the CPU to receive instructions, and the closing electromagnet acts according to the instructions.

According to an embodiment of the present invention, the undervoltage functional module includes an undervoltage control module and an undervoltage electromagnet, the undervoltage control module is connected to the CPU to receive instructions, and the undervoltage electromagnet acts according to the instructions. Under normal working conditions, the undervoltage functional module is in the hold mode; when the CPU judges that the sampling voltage is lower than the tripping set value, it sends an instruction to make the undervoltage functional module enter the fault action mode, and the undervoltage electromagnet performs Tripping action; when the CPU judges that the sampling voltage is higher than the pull-in set value; an instruction is sent to make the undervoltage functional module enter the pull-in action mode, and the under-voltage electromagnet performs a pull-in action; after successful pull-in, the The undervoltage function module re-enters the hold mode.

According to an embodiment of the present invention, each of the shunt function module, the switch-on function module and the undervoltage function module has an independent housing. The volume of the tripper is not greater than 71 cubic centimeters. The power module is installed in the housing of one of the shunt function module, closing function module and undervoltage function module.

Adopting the technical scheme of the present invention, the commonly used functions of the three circuit breaker releases including shunt excitation, closing and undervoltage tripping are combined, and controlled by a unified CPU, which makes the control simple and saves resources , at the same time, the multifunctional release of the present invention also has an additional communication module, and the overall volume is small.

Description of drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals indicate like features throughout, wherein:

Fig. 1 is a structural block diagram of a multifunctional release according to the present invention;

Fig. 2 is a circuit diagram of a multi-function release according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 shows a structural block diagram of an embodiment of a multifunctional release according to the present invention. As shown in Fig. 1, a multifunctional release 100 used in a circuit breaker includes:

A power module 102, providing power;

The sampling module 104 performs high-frequency sampling on the voltage;

CPU 106 is connected with the sampling module 104, receives the voltage signal collected by the sampling module 104 and performs analysis and calculation;

Communication module 108, links to each other with CPU 106, is also connected to communication bus 110, realizes the data communication of CPU 106 and communication bus 110;

Also includes one or more of the following components:

The shunting function module 112 is connected with the CPU 106. After the communication module 108 receives the shunting signal from the communication bus 110, the CPU 106 is notified, and the CPU 106 sends an instruction to make the shunting function module 112 act. 1, the shunt function module 112 includes a shunt control module 112a and a shunt electromagnet 112b, the shunt control module 112a is connected to the CPU 106 to receive instructions, and the shunt electromagnet 112b acts according to the instructions.

The closing function module 114 is connected with the CPU 106. After the communication module 108 receives the closing signal from the communication bus 110, it notifies the CPU 106, and the CPU 106 issues an instruction to make the closing function module act. 1, the closing function module 114 includes a closing control module 114a and a closing electromagnet 114b. The closing control module 114a is connected to the CPU 106 to receive instructions, and the closing electromagnet 114b acts according to the instructions.

The undervoltage functional module 116 is connected to the CPU 106, and the CPU 106 sends an instruction to the undervoltage functional module 116 according to the voltage signal collected by the sampling module 104 to make it trip, pull in or maintain. Undervoltage function module 116 comprises undervoltage control module 116a and undervoltage electromagnet 116b, and undervoltage control module 116a is connected to CPU 106 to receive instruction, and undervoltage electromagnet 116b acts according to instruction. Under normal working conditions, the undervoltage functional module 116 is in the hold mode; when the CPU 106 judges that the sampling voltage is lower than the tripping set value, an instruction is issued to make the undervoltage functional module 116 enter the fault action mode, and the undervoltage electromagnet 116b is tripped Action; when the CPU 106 judges that the sampling voltage is higher than the pull-in set value; an instruction is issued to make the undervoltage functional module 116 enter the pull-in action mode, and the undervoltage electromagnet 116b performs a pull-in action; after successful pull-in, the undervoltage functional module 116 re-enters hold mode.

According to an embodiment of the present invention, each of the shunt function module, the switch-on function module and the undervoltage function module has an independent housing. The volume of the multifunctional release of the present invention is not greater than 71 cubic centimeters.

According to an embodiment of the present invention, the power module is installed in the housing of one of the shunt function module, the closing function module and the undervoltage function module.

Fig. 2 is a circuit diagram of a multi-function release according to an embodiment of the present invention. As can be seen with reference to Fig. 2, this circuit 200 is made up of following circuit modules: module 202 is a power supply module, and module 204 is a sampling module, and in this embodiment circuit 200, sampling module has several resistances to form; Module 206 is CPU; Module 208 is The communication module is connected to the communication bus 209; the module 210 is a shunt control module, and the 212 is a shunt electromagnet, and the two together form a shunt function module; the module 214 is a closing control module, and 216 is a closing electromagnet. Together they form a closing function module; module 218 is an undervoltage control module, and module 220 is an undervoltage electromagnet, and the two together form an undervoltage function module.

Adopting the technical solution of the present invention, the commonly used functions of the three circuit breaker releases including shunt excitation, closing and undervoltage tripping are combined, and are controlled by a unified CPU, which makes the control simple and saves resources , at the same time, the multifunctional release of the present invention also adds a communication module, and the overall volume is small.

The above-mentioned embodiments are provided for those who are familiar with the field to implement or use the present invention, and those who are familiar with the art can make various modifications or changes to the above-mentioned embodiments without departing from the inventive idea of the present invention. The scope of protection of the present invention is not limited by the above-mentioned embodiments, but should be the maximum scope consistent with the innovative features mentioned in the claims.

Claims (8)

1. a multifunction tripping device is used for circuit breaker, it is characterized in that, comprising:

Power module provides power supply;

Sampling module carries out high frequency sampling to voltage;

CPU links to each other with described sampling module, receives the voltage signal of described sampling module collection and carries out analytical calculation;

Communication module links to each other with described CPU, is also connected to communication bus, realizes the data communication of CPU and communication bus;

Also comprise and be selected from one or more in the following assembly:

The shunt opening functional module links to each other with described CPU, after described communication module is received the shunt opening signal from described communication bus; Notify described CPU, CPU sends instruction and makes the action of shunt opening functional module;

The closing function module links to each other with described CPU, after described communication module is received switching signal from described communication bus; Notify described CPU, CPU sends instruction and makes the action of closing function module;

The under voltage functional module links to each other with described CPU, and described CPU sends instruction according to the voltage signal by described sampling module collection to described under voltage functional module, makes it to thread off, adhesive or maintenance.

2. multifunction tripping device as claimed in claim 1 is characterized in that, described shunt opening functional module comprises shunt opening control module and shunt opening electromagnet, and described shunt opening control module is connected to CPU and receives instruction, and described shunt opening electromagnet moves according to described instruction.

3. multifunction tripping device as claimed in claim 1 is characterized in that, described closing function module comprises switch-on controlling module and making electromagnet, and described switch-on controlling module is connected to CPU and receives instruction, and described making electromagnet moves according to described instruction.

4. multifunction tripping device as claimed in claim 1, it is characterized in that, described under voltage functional module comprises under voltage control module and under voltage electromagnet, and described under voltage control module is connected to CPU and receives instruction, and described under voltage electromagnet moves according to described instruction.

5. multifunction tripping device as claimed in claim 4 is characterized in that, under the normal operating conditions, described under voltage functional module is the maintenance pattern; When CPU judges that sampled voltage is lower than the dropout set point, send instruction and make described under voltage functional module enter the fault actions pattern, the action of threading off of described under voltage electromagnet; When CPU judges that sampled voltage is higher than the adhesive set point; Send instruction and make described under voltage functional module enter the adhesive pattern, described under voltage electromagnet carries out the adhesive action; After the success adhesive, described under voltage functional module reenters the maintenance pattern.

6. multifunction tripping device as claimed in claim 1 is characterized in that, described shunt opening functional module, closing function module and under voltage functional module have independently housing separately.

7. multifunction tripping device as claimed in claim 6 is characterized in that, the volume of described release is not more than 71 cubic centimetres.

8. multifunction tripping device as claimed in claim 6 is characterized in that, described power module is installed in one of them the housing of described shunt opening functional module, closing function module and under voltage functional module.

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