CN213875872U - Regional backup power switching verification auxiliary device - Google Patents

Regional backup power switching verification auxiliary device Download PDF

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Publication number
CN213875872U
CN213875872U CN202022882067.6U CN202022882067U CN213875872U CN 213875872 U CN213875872 U CN 213875872U CN 202022882067 U CN202022882067 U CN 202022882067U CN 213875872 U CN213875872 U CN 213875872U
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China
Prior art keywords
relay
circuit breaker
intermediate relay
closing
opening
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CN202022882067.6U
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Chinese (zh)
Inventor
王开明
崔昊鹏
林健
邹恒涛
杨磊
张荣增
莫红青
罗绍强
兰锦
张多荣
陈小瓦
莫金洪
刀鹏程
李胜
姚建
王浩兵
崔政
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Xishuangbanna Power Supply Bureau of Yunnan Power Grid Co Ltd
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Xishuangbanna Power Supply Bureau of Yunnan Power Grid Co Ltd
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Priority to CN202022882067.6U priority Critical patent/CN213875872U/en
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Abstract

The utility model relates to a check-up auxiliary device is hauled fully in region, the device include analog circuit breaker all the way at least, and analog circuit breaker includes auxiliary relay, two position relay and control button, and control button includes that the hand divides/hand closes control button and protection tripping operation/reclosing lock control button. The utility model discloses compare conventional spare power automatic switching check gauge, can realize the automatic antithetical couplet in a distant place and transfer, need not the manual fit control, improve regional spare power automatic switching check-up success rate.

Description

Regional backup power switching verification auxiliary device
Technical Field
The utility model relates to an electric power system relay protection field especially relates to a regional check-up auxiliary device that is fully commissioned.
Background
At present, a regional backup power switching device is widely applied to transformer substations with voltage levels of 220kV and below, but the verification of the regional backup power switching device is complex, and the backup power switching device is generally verified without power outage, so that an analog circuit breaker needs to be used for replacing an actually-operated switch in the backup power switching verification process.
Before checking, a worker needs to spend a large amount of time removing tripping and closing and switching-in loop wiring of a regional spare device and an on-the-fly switch, a relay protection tester outputs current and voltage alternating current analog quantity of test signals, an independent analog circuit breaker provides switching-in quantity and receiving switching-out quantity, alternating current voltage quantity of the test signals needs manual intervention to disconnect the voltage loss of an analog bus, and wiring is recovered one by one after the test is finished. Therefore, manual intervention and matching are needed in the test of the existing regional spare power switching device, the cooperative matching of test signals cannot be realized when joint debugging is carried out among related station domains, and meanwhile, a greater risk exists in the process of disconnection and connection in safety, and the operation is complicated and the wiring is complex.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a regional check-up auxiliary device that throws fully, the technical scheme of the utility model specifically as follows:
a regional spare power switching calibration auxiliary device comprises at least one path of simulation circuit breaker, wherein the simulation circuit breaker comprises an intermediate relay, a double-position relay and control buttons, and the control buttons comprise a manual opening/closing control button, a protection tripping/reclosing control button and a test wiring jack;
the hand opening/closing control button is respectively connected with the closed position relay, the resistor in series and then forms a loop with the negative electrode of the power supply; the hand-closing/protection switch is connected with an action coil of the first intermediate relay and then is connected with a normally open contact of the second intermediate relay in series to form a loop with the negative electrode of the power supply;
one side of the manual opening control button is connected with the double-position relay, and is connected with the protective opening in parallel after passing through the diode and is connected with the action coil of the second intermediate relay, and then is connected with the normally open contact of the first intermediate relay in series to form a loop with the negative electrode of the power supply;
the action coils of the first intermediate relay and the second intermediate relay are respectively connected in series with a pin with a switching function of a switching-on and switching-off coil of the analog circuit breaker and then form a loop with a power supply cathode; normally open contacts of the first intermediate relay and the second intermediate relay are respectively connected with the opening and closing coils, and are connected with the resistors in series to form a loop with a negative electrode of a power supply; and the third intermediate relay action coil and the negative electrode form a loop after passing through the opening and closing coil.
Furthermore, normally open contacts of the closing intermediate relay and the separating intermediate relay are also respectively connected with a switching-on and switching-off indicator lamp, and the switching-on and switching-off indicator lamp forms a loop with a power supply negative electrode through the normally open contacts of the first relay and the second relay respectively.
Furthermore, remote coordination joint debugging starting is controlled by a remote control module, and the remote coordination joint debugging starting comprises point-to-point 4G or 5G remote switching value remote transmission mutual control, 4G or 5G middle-end remote mutual control, Ethernet remote mutual control and R485/232 mode mutual control.
Further, a multi-way analog circuit breaker is included.
Further, including 6 way analog circuit breakers, 6 way analog circuit breakers connect gradually, and first remote control module and second remote control module are located between 2 nd way analog circuit breaker and the 3 rd way analog circuit breaker, and the 1 st way analog circuit breaker and the 6 th way analog circuit breaker other end are the return circuit, the return circuit is used for relay protection tester to export regional alternating current, the voltage test signal of being equipped with to throw.
Compared with the prior art, the beneficial effects of the utility model are specifically as follows:
the utility model discloses compare conventional spare power automatic switching check gauge, can realize the automatic antithetical couplet in a distant place and transfer, need not the manual fit control, improve regional spare power automatic switching check-up success rate.
Drawings
Fig. 1 is a schematic control diagram of the analog circuit breaker of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an auxiliary device for backup commissioning verification in an area;
fig. 3 is a schematic diagram of the operation of the local standby system according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments belong to the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
The regional auxiliary device that is equipped with of this embodiment of switching check-up, including 6 way simulation circuit breakers, as shown in fig. 1, simulation circuit breaker includes auxiliary relay, two position relay KKJ and control button, and control button includes that the hand divides/the hand closes change over switch and protection tripping operation/reclosing change over switch.
Wherein two position relay KKJ are closing back position relay for distinguish protection trip and manual trip function, TQ/HQ is the divide-shut brake coil of simulation circuit breaker, is used for simulating the use of circuit breaker divide-shut brake.
The hand on/off control button is respectively connected with pin (r) and pin (b) of double-position relay KKJ, and after the pin (r) ⑪ is connected in series with a resistor, the resistor and the negative electrode of the power supply form a loop; the action coil of the hand-closing/protection closing access relay ZJ1 is connected in series with the normally open contact K2 and then forms a loop with the negative electrode of the power supply; one side of the manual opening control button is connected with a pin II of the double-position relay KKJ, is connected with a protective opening brake in parallel after passing through a diode and is connected with an action coil of a relay ZJ2, and is connected with a normally open contact of K1 in series to form a loop with a power supply cathode; k1, K2 intermediate relay action coil respectively with TQ/HQ ((C)/five) (C) foot tandem connection and then with the negative pole of power supply form the return circuit; the normally open contacts of ZJ1 and ZJ2 are respectively connected with pin (ii) of TQ/HQ, and after the pin (ii) is connected with resistor in series via pin (⑪) of TQ/HQ, they are connected with negative pole of power supply to form a loop; the switching-on and switching-off indicator lamps HR and HG form a loop with the negative pole of the power supply through normally open contacts of the relays ZJ1 and ZJ2 respectively; the intermediate relay K3 action coil forms a loop with the negative pole after passing through TQ/HQ (nine/nine) pins.
The action principle of the analog circuit breaker is as follows:
under the condition of supplying control power, the normally closed contact of TQ/HQ is switched on (TQ/HQ is switched on from the fifth to the fifth), then the positive power supply is switched on through the action coil of K2 and then through TQ/HQ from the fifth to the fifth, K2 is excited, its normally open contact K2 is also closed, at this moment, the negative pole of ZJ1 is conducted, and it is ready for hand closing/protection closing.
If the circuit breaker needs to be simulated to be switched on, the hand-closing/protection closing contact needs to be closed at the moment, the relay ZJ1 is excited, the normally-open contact of the relay ZJ1 is closed, and the positive pin and the negative pin of the TQ/HQ form a loop, so that the TQ/HQ acts, at the moment, the TQ/HQ is opened, the third and the seventh are closed, and the K1 and the K3 are electrically excited to close A, B, C, thereby completing the switching-on function of the circuit breaker. After K1 is excited, its normally open contact K1 is closed, at this time, the ZJ2 action coil is connected with negative pole, and the preparation for separating brake is made. If the circuit breaker is simulated to be opened, the hand is required to be closed at the moment, one side is reset through KKJ, the other side enables ZJ2 to be excited through a diode (the protection part directly drives ZJ2, and KKJ cannot be reset under the action of the diode), a normally open contact of ZJ2 is closed, and a loop is formed by a pin ⑪ and a negative electrode of TQ/HQ, so that the TQ/HQ is reset, at the moment, the third time, the fourth time, the third time, the fourth time and the fourth time are switched off, the K1 and the K3 relays are powered off, so that an A, B, C port in the figure 2 is disconnected, and the opening function of the circuit breaker is completed.
Fig. 1 is a schematic diagram of a control circuit of only one of the analog circuit breakers, which includes an intermediate relay, a two-position relay, a control button, a transfer switch, and an indicator light. Each circuit of analog circuit breaker has the functions of independent hand tripping/hand closing and protection tripping/reclosing. The device of the embodiment is also provided with the switching-in/switching-out quantity and the wiring jacks thereof, wherein the switching-in/switching-out quantity is matched with the regional spare power supply, and the switching-in/switching-out quantity is equal to the switching-in/switching-out quantity and the switching-out quantity. The signal indicator light is used for displaying the state of the circuit breaker.
The device of the embodiment has the function of simulating the running state of primary equipment such as a power transmission line, a circuit breaker and the like, and can simulate the running state of the primary equipment to realize the judgment test of no current and no voltage of alternating current and voltage.
As shown in FIG. 2, DL1-DL6 are 1-6-way analog breakers, and remote control modules YC-A, YC-B can transmit control to each other. A. B, C, N is a 'primary equipment' loop, which can be used to relay the test signal of AC and voltage output by the protection tester to the regional backup.
As shown in FIGS. 2 and 3, the auxiliary checking device can be used at the C station to simulate the fault condition of the line between DL3 and DL4 for checking.
Firstly, alternating current and voltage signals are output by a relay protection tester, and are connected to corresponding interval channels, opening and closing output quantities, switching-on and closing control circuits and the like of regional backup switches after passing through primary equipment loops of DL3 and DL 4.
And a protection trip button of DL3 is manually started, at the moment, a DL3 breaker trips, a backup power switch in a C station area detects that bus voltage loss and main supply lines have no current flowing for delaying, then the backup power switch is started to trip off DL4, then DL5 is switched on, and power supply of the C station is recovered to be normal.
The working process of the embodiment is as follows:
A. b, C, D among the four stations, the operation mode is that the station A supplies power through DL1-DL4, wherein the station C DL5 is in hot standby state, if the line between DL1-DL2 is in failure and the reclosing fails, then the regional spare power switch of the station B trips DL2, the regional spare power switch of the station C trips DL4, then DL5 is closed, and after the voltage of the station C is recovered, DL4 is closed, the regional spare power switch is completed, and the power supply is recovered.
If the regional backup switch needs to be checked, the regional backup switch is quitted from operation in the station B, after safety measures are made, the relay protection test is carried out by accessing alternating current and voltage quantity from the position DL1, corresponding current and voltage intervals of the regional backup switch are output through the jack of DL2, and meanwhile, the tripping, closing and other switching-in and switching-out quantity and tripping and switching-on control loops of DL2 are also accessed, and the wiring mode under the normal operation condition is simulated.
Adopt this utility model function unanimous another verification auxiliary device to insert DL4 and DL5 interval simultaneously at C station. After wiring is completed, a protection trip button is started by DL1 of the auxiliary checking device at the station B, protection trip caused by line fault of a simulated DL1 line is realized, alternating current and voltage signals output by a relay protection tester are cut off, meanwhile, a remote control function is started by the auxiliary checking device at the station C to send a control signal, at the moment, the regional backup switching device at the station B senses no voltage of a bus and no current of a main supply line, and the DL2 of the auxiliary checking device is tripped through delayed starting of backup switching action.
Similarly, a relay protection tester is used in the C station to add alternating current and voltage test signals from the verification auxiliary devices DL6, DL5 and DL4 to access corresponding interval channels, switching-in and switching-out channels and a tripping and closing loop of the regional backup switching device of the C station. After receiving the remote control signal sent by the B station check auxiliary device, the C station check auxiliary device starts the controller to cut off the output of the AC current and voltage test signals of DL4, simulates the voltage loss of DL3 and DL4 circuits, at the moment, the regional backup power supply of the C station detects that a bus is not voltage and a main supply circuit does not have current, the regional backup power supply of the C station firstly operates to trip off DL4 after the backup power supply operation condition is met, then DL5 is switched on, and after the bus voltage recovery (obtained after DL6 is switched on by DL 5) is detected, DL4 is switched on finally, the regional backup power supply is completed, and the power supply is recovered.
In this embodiment, each circuit breaker has the functions of independent hand trip/protection trip and reclosing, and can also simulate the opening and closing functions of a primary equipment loop, and access ac test current and voltage from the opening and closing functions, so as to realize automatic voltage loss of the ac bus voltage and the judgment of no current of the main supply line to start the backup power automatic switching action.
After current and voltage are added through a relay protection tester, a protection trip button is manually started on an auxiliary calibration device to simulate the fault of a power transmission line, and after the action of a protection device trips a simulated breaker, the regional backup power supply is used for judging whether a bus is in a no-current state or not and judging whether a main power supply line meets conditions or not, and then the backup power supply is started.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a regional spare power switching check-up auxiliary device which characterized in that: the circuit breaker comprises at least one analog circuit breaker, wherein the analog circuit breaker comprises an intermediate relay, a double-position relay and control buttons, and the control buttons comprise a manual opening/closing control button, a protection tripping/reclosing control button and a test wiring jack;
the hand opening/closing control button is respectively connected with the closed position relay action and the reset coil, and is connected with the resistor in series to form a loop with the negative electrode of the power supply; the hand-closing/protection switch is connected with an action coil of the first intermediate relay and then is connected with a normally open contact of the second intermediate relay in series to form a loop with the negative electrode of the power supply;
one side of the manual opening control button is connected with the closed position relay, and is connected with the protective opening brake in parallel after passing through the diode, and is connected with the action coil of the second intermediate relay, and then is connected with the normally open contact of the first intermediate relay in series to form a loop with the negative electrode of the power supply;
the action coils of the first intermediate relay and the second intermediate relay are respectively connected in series with pins with switching functions of an opening coil and a closing coil of the analog circuit breaker and then form a loop with the negative electrode of the power supply; normally open contacts of the first intermediate relay and the second intermediate relay are respectively connected with the opening coil and the closing coil, and are connected with a resistor in series to form a loop with a negative electrode of a power supply; and the third intermediate relay action coil and the negative electrode form a loop after passing through the opening and closing coil.
2. The auxiliary device for regional backup commissioning verification according to claim 1, wherein: the normally open contacts of the closing intermediate relay and the opening intermediate relay are also respectively connected with an opening indicating lamp and a closing indicating lamp, and the opening indicating lamp and the closing indicating lamp respectively form a loop with the negative pole of the power supply through the normally open contacts of the first relay and the second relay.
3. The auxiliary device for regional backup commissioning verification according to claim 1, wherein: the remote joint debugging start is controlled by a remote control module, and comprises point-to-point 4G or 5G remote switching value remote transmission mutual control, 4G or 5G middle-end remote mutual control, Ethernet remote mutual control and R485/232 mode mutual control.
4. The auxiliary device for regional backup commissioning verification according to claim 3, wherein: including a multiple-circuit analog circuit breaker.
5. The auxiliary device for regional backup commissioning verification according to claim 4, wherein: including 6 way simulation circuit breakers, 6 way simulation circuit breakers connect gradually, and first remote control module and second remote control module are located between 2 nd way simulation circuit breaker and the 3 rd way simulation circuit breaker, and the 1 st way simulation circuit breaker and the 6 th way simulation circuit breaker other end are the return circuit, the return circuit is used for relay protection tester to export regional alternating current, the voltage test signal of being equipped with to be thrown.
CN202022882067.6U 2020-12-04 2020-12-04 Regional backup power switching verification auxiliary device Active CN213875872U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022882067.6U CN213875872U (en) 2020-12-04 2020-12-04 Regional backup power switching verification auxiliary device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022882067.6U CN213875872U (en) 2020-12-04 2020-12-04 Regional backup power switching verification auxiliary device

Publications (1)

Publication Number Publication Date
CN213875872U true CN213875872U (en) 2021-08-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022882067.6U Active CN213875872U (en) 2020-12-04 2020-12-04 Regional backup power switching verification auxiliary device

Country Status (1)

Country Link
CN (1) CN213875872U (en)

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