CN115508589A - Automatic line changing method between relay protection device and relay protection tester - Google Patents

Automatic line changing method between relay protection device and relay protection tester Download PDF

Info

Publication number
CN115508589A
CN115508589A CN202211304073.0A CN202211304073A CN115508589A CN 115508589 A CN115508589 A CN 115508589A CN 202211304073 A CN202211304073 A CN 202211304073A CN 115508589 A CN115508589 A CN 115508589A
Authority
CN
China
Prior art keywords
switch
contact end
relay protection
contact
group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211304073.0A
Other languages
Chinese (zh)
Inventor
杨旭凯
贺春
刘洛阳
李志勇
孙迅雷
原晓磊
赵长浩
杨可标
李蕾
傅润炜
于帅
刘韶婧
郭子仪
范艳峰
赵华云
胡卫东
王峥夏
陈明
闫黎明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuchang Ketop Testing Research Institute Co ltd
Original Assignee
Xuchang Ketop Testing Research Institute Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuchang Ketop Testing Research Institute Co ltd filed Critical Xuchang Ketop Testing Research Institute Co ltd
Priority to CN202211304073.0A priority Critical patent/CN115508589A/en
Publication of CN115508589A publication Critical patent/CN115508589A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416—Connectors, terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor
    • G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

An automatic line changing method between a relay protection device and a relay protection tester is provided with the following steps: the switching expansion device is used for expanding at least two groups of input power supplies of the relay protection tester into at least three groups of output current sources and transmitting the output current sources to the relay protection device; and the background computer is used for controlling the switching expansion device and the relay protection tester. The automatic wire changing method between the relay protection device and the relay protection tester does not need to change wires during testing, thereby reducing workload, avoiding wire changing errors and providing conditions for full-automatic testing.

Description

Automatic line changing method between relay protection device and relay protection tester
Technical Field
The invention relates to the technical field of secondary control and protection equipment of a power system, in particular to an automatic line changing method between a relay protection device and a relay protection tester.
Background
The secondary control and protection equipment of the power system is various in types, the wiring mode of each equipment is different, and the existing test equipment such as test equipment produced by manufacturers such as Omicron, angli, bo-Electricity and the like has the following two problems: 1) Only one or two groups of analog quantity are input, three or four groups of output currents are needed when protection with more branches such as transformer protection and bus protection is carried out, test wires need to be frequently replaced during testing, and complete automatic testing cannot be carried out when test software such as RTbasic and the like is used; 2) The single-group analog quantity has smaller output capacity, and the protection with larger applied quantity of partial current can not meet the output requirement when constant value error check is carried out when the current constant value is 100A, and also needs current parallel output solution.
At present, under the condition that the number of current groups required by the test is large, special extended test equipment is used, and under the condition that the amplitude of output current required by the test is large, the test is carried out through parallel connection of current outputs. The above test method also has the following disadvantages: 1) The requirement of automatic testing can not be met, in the prior art, the automatic testing needs to be suspended for manual wire replacement under the condition of automatic testing, so that the testing efficiency is reduced, and the workload of testing personnel is increased. 2) The manual wire replacement reduces the reliability of correct wiring, leads to the condition of wrong wiring due to frequent wire replacement, and increases the test risk
Therefore, it is necessary to provide an automatic line changing method between a relay protection device and a relay protection tester to solve the deficiencies of the prior art.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides an automatic wire changing method between a relay protection device and a relay protection tester. The automatic wire changing method between the relay protection device and the relay protection tester can perform all tests on the existing test equipment without wire changing.
The above object of the present invention is achieved by the following technical measures:
the automatic wire changing method between the relay protection device and the relay protection tester is provided with the following steps:
the switching expansion device is used for expanding at least two groups of input power supplies of the relay protection tester into at least three groups of output current sources and transmitting the output current sources to the relay protection device;
and the background computer is used for controlling the switching expansion device and the relay protection tester.
Preferably, the switching and expanding device is provided with an input switch group, an intermediate switch group and an output switch group, the input switch group is connected with the relay protection tester, the input switch group and the output switch group are respectively connected with the intermediate switch group, and the input switch group is connected with the relay protection device.
Preferably, the input switch group is provided with a switch 1-1 and a switch 2-1.
Preferably, the intermediate switch group is provided with a switch 1-2, a switch 1-3, a switch 2-2 and a switch 2-3.
Preferably, the input switch group is provided with switches 1 to 4, switches 1 to 5, switches 1 to 6, switches 2 to 4, switches 2 to 5 and switches 2 to 6.
The A end, the B end, the C end and the H end of the switch 1-1 are respectively connected with one group of input current sources of the relay protection tester, and the A end, the B end, the C end and the H end of the switch 2-1 are respectively connected with the other group of input current sources of the relay protection tester.
A first contact end of the switch 1-1, an A end of the switch 1-2 and an A end of the switch 1-3, a second contact end of the switch 1-1, a B end of the switch 1-2 and a B end of the switch 1-3, a third contact end of the switch 1-1, a C end of the switch 1-2 and an A end of the switch 2-3, and a fourth contact end of the switch 1-1, an H end of the switch 1-2 and a B end of the switch 2-3.
A first contact end of the switch 2-1, an A end of the switch 2-2 and a C end of the switch 1-3, a second contact end of the switch 2-1, a B end of the switch 2-2 and an H end of the switch 1-3, a third contact end of the switch 2-1, a C end of the switch 2-2 and a C end of the switch 2-3, and a fourth contact end of the switch 2-1, an H end of the switch 2-2 and an H end of the switch 2-3.
The first contact end of the switch 1-2 is connected with the first contact end of the switch 1-2, the A end of the switch 1-4, the A end of the switch 1-5 and the A end of the switch 1-6, the second contact end of the switch 1-2 is connected with the second contact end of the switch 1-2, the B end of the switch 1-4, the B end of the switch 1-5 and the B end of the switch 1-6, the third contact end of the switch 1-2 is connected with the third contact end of the switch 1-2, the C end of the switch 1-4, the C end of the switch 1-5 and the C end of the switch 1-6, and the fourth contact end of the switch 1-2 is connected with the first contact end of the switch 2-3, the H end of the switch 1-4, the H end of the switch 1-5 and the H end of the switch 1-6.
The first contact end, the second contact end, the third contact end and the fourth contact end of the switch 1-2 are connected in parallel, and the first contact end, the second contact end, the third contact end and the fourth contact end of the switch 2-3 are connected in parallel.
The first contact end of the switch 2-2 is connected with the end A of the switch 2-4, the end A of the switch 2-5 and the end A of the switch 2-6, the second contact end of the switch 2-2 is connected with the end B of the switch 2-4, the end B of the switch 2-5 and the end B of the switch 2-6, the third contact end of the switch 2-2 is connected with the end C of the switch 2-4, the end C of the switch 2-5 and the end C of the switch 2-6, and the fourth contact end of the switch 2-2 is connected with the end H of the switch 2-4, the end H of the switch 2-5 and the end H of the switch 2-6.
The first contact end of the switch 1-4 is connected with the first contact end of the switch 2-4, the second contact end of the switch 1-4 is connected with the second contact end of the switch 2-4, the third contact end of the switch 1-4 is connected with the third contact end of the switch 2-4, and the fourth contact end of the switch 1-4 is connected with the fourth contact end of the switch 2-4.
The first contact end of the switch 1-5 is connected with the first contact end of the switch 2-5, the second contact end of the switch 1-5 is connected with the second contact end of the switch 2-5, the third contact end of the switch 1-5 is connected with the third contact end of the switch 2-5, and the fourth contact end of the switch 1-5 is connected with the fourth contact end of the switch 2-5.
The first contact end of the switch 1-6 is connected with the first contact end of the switch 2-6, the second contact end of the switch 1-6 is connected with the second contact end of the switch 2-6, the third contact end of the switch 1-6 is connected with the third contact end of the switch 2-6, and the fourth contact end of the switch 1-6 is connected with the fourth contact end of the switch 2-6.
The first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1-4 form a first group of output current sources of the switching expansion device and are connected with an electric protection device.
The first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1-5 form a second group of output current sources of the switching expansion device and are connected with the electric protection device.
And a third group of output current sources of the switching expansion device consisting of the first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1-6 are connected with the electric protection device.
Preferably, the background computer and the relay protection tester are communicated through a network port.
Preferably, the switching expansion device is connected with the relay protection tester through a test line, so that the current output by the relay protection tester is connected into the switching expansion device, and the expanded current interface is connected into the relay protection device.
Preferably, the background computer and the switching expansion device are communicated through a serial port.
Preferably, the background computer and the relay protection device communicate with each other through a network port, so as to receive test information of the relay protection device.
Preferably, the background computer uses a Modbus protocol to control the switching expansion device.
Preferably, the switching and expanding device is further provided with a microcontroller and a control loop for controlling the input switch group, the intermediate switch group and the output switch group, the microcontroller is communicated with the background computer through a serial port, and the microcontroller and the control loop are controlled through DO.
Preferably, the relay protection tester is an OMICRON CMC356 model.
Preferably, the switch 1-1, the switch 2-1, the switch 1-2, the switch 1-3, the switch 2-2, the switch 2-3, the switch 1-4, the switch 1-5, the switch 1-6, the switch 2-4, the switch 2-5 and the switch 2-6 are all four-contact switches.
The invention discloses an automatic wire changing method between a relay protection device and a relay protection tester, which comprises the following steps: the switching expansion device is used for expanding at least two groups of input power supplies of the relay protection tester into at least three groups of output current sources and transmitting the output current sources to the relay protection device; and the background computer is used for controlling the switching expansion device and the relay protection tester. The automatic wire changing method between the relay protection device and the relay protection tester does not need to change wires during testing, thereby reducing workload, avoiding wire changing errors and providing conditions for full-automatic testing.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a schematic diagram of system connection of an automatic line-changing method between a relay protection device and a relay protection tester.
Fig. 2 is a schematic connection diagram of the switching expansion device.
Fig. 3 is a circuit diagram of the control loop.
In fig. 1 to 3, there are included:
switching expansion device 100, switch 1-1101, switch 2-1 102, switch 1-2 103, switch 1-3 104, switch 2-2 105, switch 2-3 106, switch 1-4 107, switch 1-5 108, switch 1-6 109, switch 2-4 110, switch 2-5 111, switch 2-6 112, switch,
Background computer 200, relay protection tester 300, relay protection device 400.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1.
A method for implementing automatic line changing between a relay protection device 400 and a tester, as shown in fig. 1 and 2, comprises:
the switching expansion device 100 is configured to expand at least two sets of input power sources of the relay protection tester 300 into at least three sets of output current sources, and transmit the output current sources to the relay protection device 400.
And a background computer 200 for controlling the switching expansion device 100 and the relay protection tester 300.
The background computer 200 of the invention communicates with the relay protection tester 300 through the internet access. It should be noted that the actual manner between the background computer 200 and the relay protection tester 300 is specifically controlled according to an interface program provided by a manufacturer of the relay protection tester 300.
The switching expansion device 100 is connected with the relay protection tester 300 through a test line, so that the current output by the relay protection tester 300 is connected to the switching expansion device 100, and the expanded current interface is connected to the relay protection device 400.
The background computer 200 communicates with the switching expansion device 100 through a serial port.
The background computer 200 communicates with the relay protection device 400 through the internet access, so as to receive the test information of the relay protection device 400. The background computer 200 controls the switching expansion device 100 by using a Modbus protocol.
It should be noted that the switching expansion device 100 of the present invention can expand the input power of the relay protection tester 300 into more output currents, and these output currents are all parallel outputs of the input power, so as to satisfy the output requirements of multiple currents and large currents. The output current may be connected to a single relay protection device 400, or may be connected to a plurality of relay protection devices 400, depending on the actual situation.
Switching extension fixture 100 is provided with input switch group, intermediate switch group and output switch group, input switch group is connected with relay protection tester 300, input switch group with output switch group respectively with intermediate switch group connects, input switch group is connected with relay protection device 400.
It should be noted that the input switch set of the present invention is used for directly controlling the current source of the relay protection tester 300. The function of the intermediate switch set is to be able to adapt to the situation of large current output of the partial relay protection tester 300.
The specific input switch group of the invention is provided with a switch 1-1101 and a switch 2-1 102, the middle switch group is provided with a switch 1-2 103, a switch 1-3 104, a switch 2-2 105 and a switch 2-3 106, and the input switch group is provided with a switch 1-4 107, a switch 1-5 108, a switch 1-6 109, a switch 2-4 110, a switch 2-5 111 and a switch 2-6 112. Switches 1-1101, switches 2-1 102, switches 1-2 103, switches 1-3 104, switches 2-2 105 and switches 2-3 106, switches 1-4 107, switches 1-5 108, switches 1-6 109, switches 2-4 110, switches 2-5 111, and switches 2-6 112 are all four-contact switches.
Specifically, the terminal a, the terminal B, the terminal C, and the terminal H of the switch 1-1101 are respectively connected to one of the sets of input current sources of the relay protection tester 300, and the terminal a, the terminal B, the terminal C, and the terminal H of the switch 2-1 102 are respectively connected to the other set of input current sources of the relay protection tester 300.
The first contact end of the switch 1-1101 is connected with the A end of the switch 1-2 103 and the A end of the switch 1-3 104, the second contact end of the switch 1-1101 is connected with the B end of the switch 1-2 103 and the B end of the switch 1-3 104, the third contact end of the switch 1-1101 is connected with the C end of the switch 1-2 103 and the A end of the switch 2-3 106, and the fourth contact end of the switch 1-1101 is connected with the H end of the switch 1-2 103 and the B end of the switch 2-3 106.
A first contact terminal of the switch 2-1 102 and the a terminal of the switch 2-2 105 and the C terminal of the switch 1-3 104, a second contact terminal of the switch 2-1 102 and the B terminal of the switch 2-2 105 and the H terminal of the switch 1-3 104, a third contact terminal of the switch 2-1 102 and the C terminal of the switch 2-2 105 and the C terminal of the switch 2-3 106, and a fourth contact terminal of the switch 2-1 102 and the H terminal of the switch 2-2 105 and the H terminal of the switch 2-3 106.
The first contact end of the switch 1-2 103 is connected to the first contact end of the switch 1-2 103, the a-end of the switch 1-4, the a-end of the switch 1-5 and the a-end of the switch 1-6 109, the second contact end of the switch 1-2 103 is connected to the second contact end of the switch 1-2 103, the B-end of the switch 1-4, the B-end of the switch 1-5 and the B-end of the switch 1-6 109, the third contact end of the switch 1-2 103 is connected to the third contact end of the switch 1-2 103, the C-end of the switch 1-4 107, the C-end of the switch 1-5 and the C-end of the switch 1-6 109, and the fourth contact end of the switch 1-2 103 is connected to the first contact end of the switch 2-3 106, the H-end of the switch 1-4 107, the H-end of the switch 1-5 108 and the H-end of the switch 1-6.
The first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1-2 103 are connected in parallel, and the first contact end, the second contact end, the third contact end and the fourth contact end of the switches 2-3 106 are connected in parallel.
The first contact end of the switch 2-2 105 is connected with the A end of the switch 2-4 110, the A end of the switch 2-5 111 and the A end of the switch 2-6 112, the second contact end of the switch 2-2 105 is connected with the B end of the switch 2-4 110, the B end of the switch 2-5 111 and the B end of the switch 2-6 112, the third contact end of the switch 2-2 105 is connected with the C end of the switch 2-4 110, the C end of the switch 2-5 111 and the C end of the switch 2-6 112, and the fourth contact end of the switch 2-2 105 is connected with the H end of the switch 2-4 110, the H end of the switch 2-5 111 and the H end of the switch 2-6 112.
A first contact terminal of the switch 1-4 107 is connected to a first contact terminal of the switch 2-4 110, a second contact terminal of the switch 1-4 107 is connected to a second contact terminal of the switch 2-4 110, a third contact terminal of the switch 1-4 107 is connected to a third contact terminal of the switch 2-4 110, and a fourth contact terminal of the switch 1-4 107 is connected to a fourth contact terminal of the switch 2-4 110.
The first contact end of the switch 1-5 108 is connected with the first contact end of the switch 2-5 111, the second contact end of the switch 1-5 108 is connected with the second contact end of the switch 2-5 111, the third contact end of the switch 1-5 108 is connected with the third contact end of the switch 2-5 111, and the fourth contact end of the switch 1-5 108 is connected with the fourth contact end of the switch 2-5 111.
The first contact end of the switch 1-6 109 is connected with the first contact end of the switch 2-6 112, the second contact end of the switch 1-6 109 is connected with the second contact end of the switch 2-6 112, the third contact end of the switch 1-6 109 is connected with the third contact end of the switch 2-6 112, and the fourth contact end of the switch 1-6 109 is connected with the fourth contact end of the switch 2-6 112.
The first, second, third and fourth contact terminals of the switches 1 to 4 107 form a first set of output current sources of the switching extension device 100, which are connected to an electrical protection device. The first contact terminal, the second contact terminal, the third contact terminal and the fourth contact terminal of the switches 1 to 5 108 constitute a second group of output current sources of the switching expansion device 100 to be connected with an electric protection device. The first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1 to 109 constitute a third set of output current sources of the switching expansion device 100 to be connected with an electrical protection device.
The method for automatically changing the line between the relay protection device 400 and the tester is specifically used in several cases as follows.
In case 1, the relay protection device 400 requires three sets of current tests, and the relay protection tester 300 actually has only two sets of current outputs.
The specific operation method comprises the following steps: respectively connecting the three groups of currents of the relay protection device 400 into the first group of output current sources, the second group of output current sources and the third group of output current sources, closing all contacts of the switch 1-1101, the switch 1-2 103 and the switch 1-4, and outputting the first group of output current sources of the relay protection device 400 through the current source 1; all the contacts of the switch 1-1101, the switch 1-2 103 and the switch 1-5 are closed, and then the second group of output current sources of the relay protection device 400 can be output through the current source 1; all contacts of the switch 1-1101, the switch 1-2 103 and the switch 1-6 109 are closed, and then the third group of output current sources of the relay protection device 400 can be output through the current source 1; similarly, the current output can also be performed by the current source 2.
In case 2, the relay protection device 400 needs to check a fixed value error when the current fixed value is 50A, and the relay protection tester 300 has a single set of current with the highest output of 32A.
The specific operation method comprises the following steps: closing all contacts of the switch 1-1101, the switch 1-2 103, the switch 1-4, the switch 2-1 102, the switch 2-2 105 and the switch 2-4 to output a first group of output current sources of the relay protection device 400 through parallel output of two groups of current sources; closing all contacts of the switch 1-1101, the switch 1-2 103, the switch 1-5 108, the switch 2-1 102, the switch 2-2 105 and the switch 2-5 111, and outputting a second group of output current sources of the relay protection device 400 through parallel output of two groups of current sources; and closing all contacts of the switch 1-1, the switch 1-2 103, the switch 1-6 109, the switch 2-1 102, the switch 2-2 105 and the switch 2-6 112 to output the output current of the third group of the relay protection device 400 through parallel output of the two groups of current sources.
Case 3: the relay protection device 400 needs to check the fixed value error when the current fixed value is 100A for three sets of currents, and the relay protection tester 300 has a single set of current with the highest output of 32A.
The specific operation method comprises the following steps: all contacts of the switch 1-1101, the switch 1-2 103, the switch 1-3 104, the switch 2-1 102, the switch 2-2 105 and the switch 2-3 106 are closed, the first contact and the fourth contact of the switch 1-4 are closed, and the current of the phase A100A can be output through the first group of output current sources.
All the contacts of the switch 1-1, the switch 1-2 103, the switch 1-3 104, the switch 2-1 102, the switch 2-2 105 and the switch 2-3 106 are closed, the second contact and the fourth contact of the switch 1-4 are closed, and the current of the B phase 100A can be output through the first group of output current sources.
All the contacts of the switch 1-1, the switch 1-2 103, the switch 1-3 104, the switch 2-1 102, the switch 2-2 105 and the switch 2-3 106 are closed, the third contact and the fourth contact of the switch 1-4 are closed, and the current of the C phase 100A can be output through the first group of output current sources. The control of the output of the second set of output current sources or the third set of output current sources is substantially the same as that of the first set of output current sources, and therefore, a description thereof is not repeated.
The switching expansion device 100 is further provided with a microcontroller and a control loop for controlling the input switch set, the intermediate switch set and the output switch set, the microcontroller communicates with the background computer 200 through a serial port, and the microcontroller and the control loop are controlled through DO. The relay protection tester 300 of the invention is OMICRON CMC356.
The switching expansion device 100 of the invention receives the control instruction sent by the background computer 200 by using a Modbus protocol through a serial port communication mode, and controls the control loop through the development of the switching expansion device, thereby realizing the on-off control of the switch.
It should be noted that, the microcontroller and the control circuit are already widely used, and only the model output control of the input switch set, the intermediate switch set, and the output switch set of the present invention can be realized, that is, the microcontroller and the control circuit of the present invention can be selected as specific models. Of course, those skilled in the art can select the microcontroller and the control circuit according to the actual situation, and the microcontroller and the control circuit are not the main points of the invention and are not described in detail herein.
According to the method for realizing the automatic wire changing between the relay protection device 400 and the tester, the wire changing is not needed during testing, so that the workload is reduced, the wire changing error is avoided, and conditions are provided for full-automatic testing.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. An automatic line changing method between a relay protection device and a relay protection tester is characterized by comprising the following steps:
the switching expansion device is used for expanding at least two groups of input power supplies of the relay protection tester into at least three groups of output current sources and transmitting the output current sources to the relay protection device;
and the background computer is used for controlling the switching expansion device and the relay protection tester.
2. The method for automatically changing the line between the relay protection device and the relay protection tester according to claim 1, wherein: the switching expansion device is provided with an input switch group, an intermediate switch group and an output switch group, the input switch group is connected with the relay protection tester, the input switch group and the output switch group are respectively connected with the intermediate switch group, and the input switch group is connected with the relay protection device.
3. The method for automatically changing the line between the relay protection device and the relay protection tester according to claim 2, wherein: the input switch group is provided with a switch 1-1 and a switch 2-1,
the middle switch group is provided with a switch 1-2, a switch 1-3, a switch 2-2 and a switch 2-3;
the input switch group is provided with switches 1-4, switches 1-5, switches 1-6, switches 2-4, switches 2-5 and switches 2-6;
the A end, the B end, the C end and the H end of the switch 1-1 are respectively connected with one group of input current sources of the relay protection tester, the A end, the B end, the C end and the H end of the switch 2-1 are respectively connected with the other group of input current sources of the relay protection tester,
a first contact end of the switch 1-1, an A end of the switch 1-2 and an A end of the switch 1-3, a second contact end of the switch 1-1, a B end of the switch 1-2 and a B end of the switch 1-3, a third contact end of the switch 1-1, a C end of the switch 1-2 and an A end of the switch 2-3, a fourth contact end of the switch 1-1, an H end of the switch 1-2 and a B end of the switch 2-3,
a first contact end of the switch 2-1, an A end of the switch 2-2 and a C end of the switch 1-3, a second contact end of the switch 2-1, a B end of the switch 2-2 and an H end of the switch 1-3, a third contact end of the switch 2-1, a C end of the switch 2-2 and a C end of the switch 2-3, a fourth contact end of the switch 2-1, an H end of the switch 2-2 and an H end of the switch 2-3,
the first contact end of the switch 1-2 is connected with the first contact end of the switch 1-2, the A end of the switch 1-4, the A end of the switch 1-5 and the A end of the switch 1-6, the second contact end of the switch 1-2 is connected with the second contact end of the switch 1-2, the B end of the switch 1-4, the B end of the switch 1-5 and the B end of the switch 1-6, the third contact end of the switch 1-2 is connected with the third contact end of the switch 1-2, the C end of the switch 1-4, the C end of the switch 1-5 and the C end of the switch 1-6, the fourth contact end of the switch 1-2 is connected with the first contact end of the switch 2-3, the H end of the switch 1-4, the H end of the switch 1-5 and the H end of the switch 1-6,
the first contact end, the second contact end, the third contact end and the fourth contact end of the switch 1-2 are connected in parallel, the first contact end, the second contact end, the third contact end and the fourth contact end of the switch 2-3 are connected in parallel,
a first contact end of the switch 2-2 is connected with an A end of the switch 2-4, an A end of the switch 2-5 and an A end of the switch 2-6, a second contact end of the switch 2-2 is connected with a B end of the switch 2-4, a B end of the switch 2-5 and a B end of the switch 2-6, a third contact end of the switch 2-2 is connected with a C end of the switch 2-4, a C end of the switch 2-5 and a C end of the switch 2-6, a fourth contact end of the switch 2-2 is connected with an H end of the switch 2-4, an H end of the switch 2-5 and an H end of the switch 2-6,
the first contact end of the switch 1-4 is connected with the first contact end of the switch 2-4, the second contact end of the switch 1-4 is connected with the second contact end of the switch 2-4, the third contact end of the switch 1-4 is connected with the third contact end of the switch 2-4, the fourth contact end of the switch 1-4 is connected with the fourth contact end of the switch 2-4,
the first contact end of the switch 1-5 is connected with the first contact end of the switch 2-5, the second contact end of the switch 1-5 is connected with the second contact end of the switch 2-5, the third contact end of the switch 1-5 is connected with the third contact end of the switch 2-5, the fourth contact end of the switch 1-5 is connected with the fourth contact end of the switch 2-5,
the first contact end of the switch 1-6 is connected with the first contact end of the switch 2-6, the second contact end of the switch 1-6 is connected with the second contact end of the switch 2-6, the third contact end of the switch 1-6 is connected with the third contact end of the switch 2-6, and the fourth contact end of the switch 1-6 is connected with the fourth contact end of the switch 2-6;
a first group of output current sources of the switching expansion device consisting of a first contact end, a second contact end, a third contact end and a fourth contact end of the switches 1-4 are connected with an electric protection device;
a second group of output current sources of the switching expansion device consisting of a first contact end, a second contact end, a third contact end and a fourth contact end of the switches 1-5 are connected with the electric protection device;
and a third group of output current sources of the switching expansion device consisting of the first contact end, the second contact end, the third contact end and the fourth contact end of the switches 1-6 are connected with an electric protection device.
4. The method for automatically changing the line between the relay protection device and the relay protection tester according to any one of claims 1 to 3, wherein: and the background computer is communicated with the relay protection tester through the network port.
5. The method for automatically changing the line between the relay protection device and the relay protection tester according to any one of claims 1 to 3, wherein: the switching expansion device is connected with the relay protection tester through a test line, so that the current output by the relay protection tester is connected into the switching expansion device, and the expanded current interface is connected into the relay protection device.
6. The method for automatically changing the line between the relay protection device and the relay protection tester according to any one of claims 1 to 3, wherein: and the background computer is communicated with the switching expansion device through a serial port.
7. The method for automatically changing the line between the relay protection device and the relay protection tester according to any one of claims 1 to 3, wherein: and the background computer is communicated with the relay protection device through the network port so as to receive the test information of the relay protection device.
8. The method for automatically changing the line between the relay protection device and the relay protection tester according to any one of claims 1 to 3, wherein: the background computer uses a Modbus protocol to control the switching expansion device.
9. The method for automatically changing the line between the relay protection device and the relay protection tester according to claim 2, wherein: the switching expansion device is also provided with a microcontroller and a control loop for controlling the input switch group, the intermediate switch group and the output switch group, the microcontroller is communicated with the background computer through a serial port, and the microcontroller and the control loop are controlled through DO.
10. The method for automatically changing the wire between the relay protection device and the relay protection tester according to claim 3, wherein: the model of the relay protection tester is OMICRON CMC356;
the switch 1-1, the switch 2-1, the switch 1-2, the switch 1-3, the switch 2-2, the switch 2-3, the switch 1-4, the switch 1-5, the switch 1-6, the switch 2-4, the switch 2-5 and the switch 2-6 are all four-contact switches.
CN202211304073.0A 2022-10-24 2022-10-24 Automatic line changing method between relay protection device and relay protection tester Pending CN115508589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211304073.0A CN115508589A (en) 2022-10-24 2022-10-24 Automatic line changing method between relay protection device and relay protection tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211304073.0A CN115508589A (en) 2022-10-24 2022-10-24 Automatic line changing method between relay protection device and relay protection tester

Publications (1)

Publication Number Publication Date
CN115508589A true CN115508589A (en) 2022-12-23

Family

ID=84512185

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211304073.0A Pending CN115508589A (en) 2022-10-24 2022-10-24 Automatic line changing method between relay protection device and relay protection tester

Country Status (1)

Country Link
CN (1) CN115508589A (en)

Similar Documents

Publication Publication Date Title
CN211293214U (en) Automatic test system for whole train cable of motor train unit
GB1401192A (en) Automatic testing systems
CN110673054B (en) DC/DC power supply test system and aging test method of DC/DC power supply
CN111398863A (en) Direct current transformer control and protection device test platform and method based on RTDS
CN210534276U (en) Feeder terminal test interface equipment and system
CN213403042U (en) Universal network hardware-in-loop test system
CN115508589A (en) Automatic line changing method between relay protection device and relay protection tester
CN111220827A (en) Automatic plugging and unplugging test method and control device
CN203927005U (en) Electric valve control circuit and the electric operated valve instrument that comprises this circuit
CN208636396U (en) Feeder switch operating condition adaptive modeling device
CN210668925U (en) Communication harness, simulation test equipment and system
CN111751716B (en) Circuit breaker test equipment
CN215867009U (en) Intelligent cloud circuit breaker sequential control detection device
CN114236286A (en) Automatic spare power automatic switching test device and method based on dynamic switching of electrical loop
CN113189954B (en) Test tool and test method for medium-voltage ATS controller
CN109375009B (en) Electric power smart machine conduction noise immunity test switch matrix
CN111751717A (en) Circuit breaker detection method
JPH01186117A (en) Automatic connection system for electric circuit network simulator
CN218976336U (en) Control device of frequency converter
CN214412403U (en) Power output channel expanding unit
CN215494583U (en) Test switching circuit
CN217787640U (en) Debugging system of industrial control equipment
CN218976335U (en) Variable frequency control system
CN219936057U (en) Test equipment and system for battery management unit circuit board
CN219227574U (en) STS static single-phase double-power supply change-over switch

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination