Testing device and testing method for circuit breaker transmission

Abstract

The invention discloses a testing device for circuit breaker transmission, which relates to the technical field of relay protection devices and comprises a testing module, a power supply module, a message analysis module, a peripheral module and a port module. The test module comprises a test loop. The power supply module provides an AC / DC power supply for the device. The test module performs transmission operation of the circuit breaker on the test device through the test loop; the message analysis module outputs a result finally through the steps of receiving, verifying, decoding, extracting and processing message data; the peripheral module displays the working state of the testing device through wiring; the port module is used for expanding other functions through a set port; through mutual cooperation of the modules, the protection transmission test device is simple in overall structure through a resistance relay loop and an external wiring port. Therefore, in the relay protection secondary maintenance process, the device is adopted to indirectly verify the protection transmission function.

Description

Technical Field

[0001] The invention relates to the technical field of relay protection devices, in particular to a test device and a test method for circuit breaker transmission, which are used for testing a protection circuit breaker transmission experiment. Background Art

[0002] With the rapid development of power grids in recent years, the number of relay protection devices in substations has been increasing. As the number of operation and maintenance personnel is difficult to increase or even reduced, the contradiction between the annual surge in equipment inspection workload and insufficient manpower has become prominent. The traditional relay protection power outage inspection requires changes to the primary operation mode of the power grid, on-site power outage operations, work permits, on-site inspections, power restoration and many other links. The inspection time is long, the efficiency is low, and the manpower and material resources consumed are huge. The relay protection on-site non-stop transmission promoted to simplify the inspection is also unable to adapt to the needs of remote intelligent operation and maintenance. Operation and maintenance personnel are still required to enter the station to carry out on-site transmission operations and view and analyze information, and the effect of reducing costs and increasing efficiency is limited.

[0003] In the prior art, substation relay protection operation and maintenance personnel use simulated circuit breakers, which are mainly used for the whole group test of power system power-off protection devices or complete sets of relay protection panels, and can truly simulate the tripping and closing time of circuit breakers. During the whole group test, the tripping and closing of high-voltage circuit breakers are simulated to avoid the adverse effects caused by repeated separation and closing of circuit breakers due to repeated whole group tests. In order to ensure the reliability of power supply, it is necessary to perform functional tests on simulated circuit breakers regularly. At present, most of the simulated circuit breaker function detection devices are based on wired interfaces and operations. Traditional detectors need to be connected to 220V industrial frequency voltage, with high power loss, and cannot use wireless modules to send data. The device structure is too complicated and large in size, which is not suitable for carrying and inconvenient to use in certain specific environments.

[0004] In the prior art, China's authorized patent announcement number: CN 116992680 A, discloses that this application discloses a method and system for modeling remote non-stop power transmission of a relay protection device, including: by upgrading the protection device program software, the logical nodes of the protection "remote non-stop power transmission soft pressure plate" signal, the logical nodes of the protection "non-stop power transmission enable" signal, the logical nodes of the protection "non-stop power transmission" signal, the logical nodes of the protection "non-stop power transmission action" signal, and the data set names of the protection "non-stop power transmission enable", "non-stop power transmission", and "non-stop power transmission action" are modeled to meet the remote non-stop power transmission function of the protection device. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the prior art and disclose a test device and a test method for circuit breaker transmission, thereby solving the problem of secondary circuit relay protection transmission testing.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: comprising a test module;

[0007] Further:

[0008] The test module includes a test loop,

[0009] The test circuit includes a first ammeter A1, a resistor R1, a first voltmeter V1, a normally closed switch K1, a second ammeter A2, a third ammeter A3, a resistor R2, a second voltmeter V1, a normally closed switch K2, a normally open switch K3, a third ammeter A3, a normally open switch K4, a normally open switch K5, a normally open switch K6, a connection port 1, a connection port 2, a connection port 3, a connection port 4, a connection port 5, a connection port 6, a connection port 7 and a connection port 8;

[0010] One end of the first ammeter A1 is connected to one end of the resistor R1, the other end of the first ammeter A1 is connected to the wiring port 1, the resistor R1 is connected to the normally closed switch K1, and the first voltmeter V1 is connected in parallel to both ends of the resistor R1;

[0011] One end of the second ammeter A2 is connected to one end of the resistor R2, the other end of the second ammeter A2 is connected to the wiring port 2, the second voltmeter V2 is connected in parallel to both ends of the resistor R2, and one end of the normally closed switch K2 is connected to one end of the resistor R2;

[0012] One end of the normally open switch K3 is connected to the other end of the first ammeter A1, the other end of the normally open switch K3 is connected to the wiring port 3, one end of the normally open switch 4 is connected to the wiring port 4, and the normally open switch K5 is connected in parallel to both ends of the normally open switch K4;

[0013] One end of the third ammeter A3 is connected to the wiring port 5, the other end of the third ammeter A3 is connected to the wiring port 3, the normally open switch K6 is connected to one end of the normally open switch K5, and the normally open switch K4, the normally open switch K5, and the normally open switch K6 are commonly connected to the wiring port 7.

[0014] Further:

[0015] It also includes a power module, a message parsing module, a peripheral module and a port module;

[0016] The power module is electrically connected to the test module, the message parsing module is electrically connected to the test module, the peripheral module is electrically connected to the test module, and the port module is electrically connected to the test module;

[0017] The power module provides AC and DC power to the device;

[0018] The test module performs a circuit breaker transmission operation on the test device through the test circuit;

[0019] The message parsing module receives, verifies, decodes, extracts, and processes message data, and finally outputs the result;

[0020] The peripheral module displays the working status of the test device through wiring;

[0021] The port module is used to expand other functions through the set ports.

[0022] Further:

[0023] The specific steps of the block include message reception, message verification, message decoding, message data extraction, data processing, and result output;

[0024] The message receiving is used to receive data sent by the testing device;

[0025] The message verification process includes verification and checking of the received message and verification of the digital signature.

[0026] The message decoding requires decoding the message that has undergone the message verification, converting it from a specific encoding format into a processable text or data structure;

[0027] The data extraction, the decoded message contains various types of data, and the required information needs to be extracted according to a specific data structure or template;

[0028] The data processing, the extracted data needs to be further processed to meet the needs of business logic or data analysis;

[0029] The result output, the processed data needs to be output in an appropriate form for subsequent use or display.

[0030] Further:

[0031] The message reception is imported by means of SCD.

[0032] Further:

[0033] The peripheral module includes 8 connection ports, namely the connection port 1, the connection port 2, the connection port 3, the connection port 4, the connection port 5, the connection port 6, the connection port 7 and the connection port 8.

[0034] Further:

[0035] The port module includes an LC port and an ST port;

[0036] The LC port is used for the operation of optical receiving power, and the LC port adopts a jack latch mechanism;

[0037] The LC port can be replaced by an ST port.

[0038] Further:

[0039] The power supply module charges the test device through the self-test of the connection test loop, the three ammeters, and the two voltmeters.

[0040] Further:

[0041] The testing method of the test loop is as follows:

[0042] Step 1: Wiring preparation, the operation and maintenance personnel perform wiring operations: connect the test device to the relay protection secondary circuit through a connecting line, and use the power module to detect whether the wiring is correct;

[0043] Step 2: AC sampling: the operation and maintenance personnel adjust the resistor R1 to sample the input AC current and AC voltage;

[0044] Step 3: Functional test: Perform a functional test of the tripping and closing of the circuit breaker on the test circuit;

[0045] Step 4: Data output: After completing the functional test, the message parsing module performs message reception, message verification, message decoding, and message data extraction in sequence, and finally outputs the results to the operation and maintenance personnel.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The present invention sets a test circuit. During the secondary maintenance of the relay protection, if hardware and software maintenance is carried out, the circuit breaker must be driven, but power outage is generally not possible. The present invention indirectly verifies the protection transmission function of the circuit breaker through the test circuit, thereby improving the power supply reliability. The device of the present invention has a simple structure and is suitable for being carried around. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of the test circuit of the present invention;

[0049] Figure 2 It is a schematic diagram of the structure of each module of the present invention;

[0050] Figure 3 The present invention is a test method process. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] like Figure 1 As shown, it shows a schematic diagram of the structure of each module of the present invention, including: the test circuit includes a first ammeter A1, a resistor R1, a first voltmeter V1, a normally closed switch K1, a second ammeter A2, a third ammeter A3, a resistor R2, a second voltmeter V1, a normally closed switch K2, a normally open switch K3, a third ammeter A3, a normally open switch K4, a normally open switch K5, a normally open switch K6, a wiring port 1, a wiring port 2, a wiring port 3, a wiring port 4, a wiring port 5, a wiring port 6, a wiring port 7 and a wiring port 8;

[0053] One end of the first ammeter A1 is connected to one end of the resistor R1, the other end of the first ammeter A1 is connected to the wiring port 1, the resistor R1 is connected to the normally closed switch K1, and the first voltmeter V1 is connected in parallel to both ends of the resistor R1; the first ammeter and the first voltmeter are connected to the resistor relay circuit to realize circuit monitoring;

[0054] One end of the second ammeter A2 is connected to one end of the resistor R2, the other end of the second ammeter A2 is connected to the wiring port 2, the second voltmeter V2 is connected in parallel to both ends of the resistor R2, and one end of the normally closed switch K2 is connected to one end of the resistor R2; one end of the normally closed switch K2 is connected to the wiring port 7, and in actual engineering, the wiring port 7 can be used to realize the function of a short-circuiting relay; at the same time, the power module is connected to the power module through the wiring port 7 to perform a charging operation, and at the same time, the operation and maintenance personnel can realize the self-check function of the test circuit through the closing operation of the normally closed switch K1 and the normally closed switch K2, and at the same time, the operation and maintenance personnel can realize the detection purpose of the test circuit by monitoring the ammeter and the voltmeter.

[0055] One end of the normally open switch K3 is connected to the other end of the first ammeter A1, the other end of the normally open switch K3 is connected to the wiring port 3, one end of the normally open switch 4 is connected to the wiring port 4, and the normally open switch K5 is connected in parallel to both ends of the normally open switch K4.

[0056] One end of the third ammeter A3 is connected to the wiring port 5, the other end of the third ammeter A3 is connected to the wiring port 3, the normally open switch K6 is connected to one end of the normally open switch K5, and the normally open switch K4, the normally open switch K5, and the normally open switch K6 are commonly connected to the wiring port 7;

[0057] The internal configuration message parsing device can parse the message of the smart substation by importing SCD, so that the device has the operability of the smart station. Several LC ports and ST ports are set externally, and it has the ability to detect optical receiving power.

[0058] like Figure 2 As shown, it shows a schematic diagram of the structure of each module of the present invention, including a power module, a message parsing module, a peripheral module and a port module;

[0059] The power module is electrically connected to the test module, the message parsing module is electrically connected to the test module, the peripheral module is electrically connected to the test module, and the port module is electrically connected to the test module;

[0060] The power module provides AC and DC power to the device;

[0061] The test module performs a circuit breaker transmission operation on the test device through the test circuit;

[0062] The message parsing module receives, verifies, decodes, extracts, and processes message data, and finally outputs the result;

[0063] The peripheral module displays the working status of the test device through wiring;

[0064] The port module is used to expand other functions through the set ports.

[0065] Preferably, the specific steps of the message parsing module include message reception, message verification, message decoding, message data extraction, data processing, and result output;

[0066] The message receiving is used to receive data sent by the testing device;

[0067] The message verification process includes verification and checking of the received message and verification of the digital signature.

[0068] The message decoding requires decoding the message that has undergone the message verification, converting it from a specific encoding format into a processable text or data structure;

[0069] The data extraction, the decoded message contains various types of data, and the required information needs to be extracted according to a specific data structure or template;

[0070] The data processing, the extracted data needs to be further processed to meet the needs of business logic or data analysis;

[0071] The result output, the processed data needs to be output in an appropriate form for subsequent use or display.

[0072] Preferably, the message reception is imported via SCD.

[0073] Preferably, the peripheral module includes 8 connection ports, namely the connection port 1, the connection port 2, the connection port 3, the connection port 4, the connection port 5, the connection port 6, the connection port 7 and the connection port 8.

[0074] Preferably, the port module includes an LC port and an ST port;

[0075] The LC port is used for the operation of optical receiving power, and the LC port adopts a jack latch mechanism;

[0076] The LC port can be replaced by an ST port.

[0077] Preferably, the power module charges the test device through the self-test of the connection test loop, the three ammeters and the two voltmeters.

[0078] The traditional transmission method is: connect the control power supply, close the transmitted switch, and then short-circuit the relay contacts to simulate the relay action to make the switch action to check the integrity of the protection circuit; while in the present invention, the connection port 1 and the connection port 7 are connected by a wire and directly short-circuited to check the integrity of the protection circuit.

[0079] like Figure 3 As shown, it is a flow chart of the test method of the present invention; Step 1: Wiring preparation, the operation and maintenance personnel perform wiring operations: connect the test device to the relay protection secondary circuit through the connecting wire, and use the power module to detect whether the wiring is correct;

[0080] Step 2: AC sampling: the operation and maintenance personnel adjust the resistor R1 to sample the input AC current and AC voltage;

[0081] Step 3: Functional test: Perform a functional test of the tripping and closing of the circuit breaker on the test circuit;

[0082] Step 4: Data output: After completing the functional test, the message parsing module performs message reception, message verification, message decoding, and message data extraction in sequence, and finally outputs the results to the operation and maintenance personnel.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test device for circuit breaker transmission, mainly including a test module; Features: The test module includes a test loop, The test circuit includes a first ammeter A1, a resistor R1, a first voltmeter V1, a normally closed switch K1, a second ammeter A2, a third ammeter A3, a resistor R2, a second voltmeter V2, a normally closed switch K2, a normally open switch K3, a third ammeter A3, a normally open switch K4, a normally open switch K5, a normally open switch K6, a connection port 1, a connection port 2, a connection port 3, a connection port 4, a connection port 5, a connection port 6, a connection port 7 and a connection port 8; One end of the first ammeter A1 is connected to one end of the resistor R1, the other end of the first ammeter A1 is connected to the wiring port 1, the resistor R1 is connected to the normally closed switch K1, and the first voltmeter V1 is connected in parallel to both ends of the resistor R1; One end of the second ammeter A2 is connected to one end of the resistor R2, the other end of the second ammeter A2 is connected to the wiring port 2, the second voltmeter V2 is connected in parallel to both ends of the resistor R2, and one end of the normally closed switch K2 is connected to one end of the resistor R2; One end of the normally open switch K3 is connected to the other end of the first ammeter A1, the other end of the normally open switch K3 is connected to the wiring port 3, one end of the normally open switch 4 is connected to the wiring port 4, and the normally open switch K5 is connected in parallel to both ends of the normally open switch K4; One end of the third ammeter A3 is connected to the wiring port 5, the other end of the third ammeter A3 is connected to the wiring port 3, the normally open switch K6 is connected to one end of the normally open switch K5, and the normally open switch K4, the normally open switch K5, and the normally open switch K6 are commonly connected to the wiring port 7.

2. The testing device for circuit breaker transmission according to claim 1, Features: It also includes a power module, a message parsing module, a peripheral module and a port module; The power module is electrically connected to the test module, the message parsing module is electrically connected to the test module, the peripheral module is electrically connected to the test module, and the port module is electrically connected to the test module; The power module provides AC and DC power to the device; The test module performs a circuit breaker transmission operation on the test device through the test circuit; The message parsing module receives, verifies, decodes, extracts, and processes message data, and finally outputs the result; The peripheral module displays the working status of the test device through wiring; The port module is used to expand other functions through the set ports.

3. The testing device for circuit breaker transmission according to claim 2, Features: The specific steps of the message parsing module include message reception, message verification, message decoding, message data extraction, data processing, and result output; The message receiving is used to receive data sent by the testing device; The message verification process includes verification and checking of the received message and verification of the digital signature. The message decoding requires decoding the message that has undergone the message verification, converting it from a specific encoding format into a processable text or data structure; The data extraction, the decoded message contains various types of data, and the required information needs to be extracted according to a specific data structure or template; The data processing, the extracted data needs to be further processed to meet the needs of business logic or data analysis; The result output, the processed data needs to be output in an appropriate form for subsequent use or display.

4. The testing device for circuit breaker transmission according to claim 1, Features: The message reception is imported by means of SCD.

5. The testing device for circuit breaker transmission according to claim 1, Features: The peripheral module includes 8 connection ports, namely the connection port 1, the connection port 2, the connection port 3, the connection port 4, the connection port 5, the connection port 6, the connection port 7 and the connection port 8.

6. The testing device for circuit breaker transmission according to claim 1, Features: The port module includes an LC port and an ST port; The LC port is used for the operation of optical receiving power, and the LC port adopts a jack latch mechanism; The LC port can be replaced by an ST port.

7. The testing device for circuit breaker transmission according to claim 1, Features: The power supply module charges the test device through the self-test of the connection test loop, the three ammeters, and the two voltmeters.

8. The testing device for circuit breaker transmission according to claim 1, Features: The following steps are performed using a testing device according to any one of claims 1 to 7: Step 1: Wiring preparation, the operation and maintenance personnel perform wiring operations: connect the test device to the relay protection secondary circuit through a connecting line, and use the power module to detect whether the wiring is correct; Step 2: AC sampling: the operation and maintenance personnel adjust the resistor R1 to sample the input AC current and AC voltage; Step 3: Functional test: Perform a functional test of the tripping and closing of the circuit breaker on the test circuit; Step 4: Data output: After completing the functional test, the message parsing module performs message reception, message verification, message decoding, and message data extraction in sequence, and finally outputs the results to the operation and maintenance personnel.

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