CN206710489U - A kind of electric substation's route protection service without power-off device - Google Patents
A kind of electric substation's route protection service without power-off device Download PDFInfo
- Publication number
- CN206710489U CN206710489U CN201720457545.4U CN201720457545U CN206710489U CN 206710489 U CN206710489 U CN 206710489U CN 201720457545 U CN201720457545 U CN 201720457545U CN 206710489 U CN206710489 U CN 206710489U
- Authority
- CN
- China
- Prior art keywords
- contact
- transfer switch
- control device
- line protection
- electrically connected
- 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.)
- Active
Links
Landscapes
- Keying Circuit Devices (AREA)
Abstract
本实用新型公开了一种变电所线路保护不停电检修装置。它包括第二线路保护测控装置、给第二线路保护测控装置供电的电源模块、转换开关QK1和转换开关QK2，转换开关QK1的触点2、触点6、触点10、触点14分别连接有一根第一测试线，转换开关QK1的触点3、触点6、触点9分别与第二线路保护测控装置的三个电流输入端电连接，转换开关QK1的触点16与第二线路保护测控装置的接地端电连接，转换开关QK1的触点1、触点5、触点9、触点13分别连接有一根第二测试线。本实用新型在对变电所内的线路保护测控装置进行检修时，使用另一个线路保护测控装置代替原有的线路保护测控装置工作，变电所无需断电，不影响用户用电。
The utility model discloses a maintenance device for circuit protection without power failure in a substation. It includes a second line protection measurement and control device, a power supply module for supplying power to the second line protection measurement and control device, a changeover switch QK1 and a changeover switch QK2, and the contacts 2, 6, 10 and 14 of the changeover switch QK1 are respectively connected to There is a first test line, the contact 3, contact 6 and contact 9 of the changeover switch QK1 are respectively electrically connected with the three current input ends of the second line protection measurement and control device, and the contact 16 of the changeover switch QK1 is connected with the second line The ground terminal of the protection measurement and control device is electrically connected, and the contact 1, contact 5, contact 9, and contact 13 of the transfer switch QK1 are respectively connected to a second test line. When the utility model is overhauling the line protection, measurement and control device in the substation, another line protection, measurement and control device is used to replace the original line protection, measurement and control device.
Description
技术领域technical field
本实用新型涉及变电所设备检修技术领域，尤其涉及一种变电所线路保护不停电检修装置。The utility model relates to the technical field of substation equipment maintenance, in particular to a substation line protection non-stop maintenance device.
背景技术Background technique
35KV变电所内设有线路保护测控装置用于监控变电所内的三相电流电压，当三相电流电压异常时控制变电所的断路器断开，保护变电所内的线路。目前，对线路保护测控装置进行检修时，需要将变电所断电，然后对变电所内的线路保护测控装置检修，影响了用户用电。The 35KV substation is equipped with a line protection measurement and control device to monitor the three-phase current and voltage in the substation. When the three-phase current and voltage are abnormal, the circuit breaker in the substation is controlled to disconnect to protect the lines in the substation. At present, when overhauling the line protection measurement and control device, it is necessary to cut off the power of the substation, and then overhaul the line protection measurement and control device in the substation, which affects the power consumption of users.
发明内容Contents of the invention
本实用新型的目的是克服目前对变电所内的线路保护测控装置进行检修时需要对变电所断电，影响用户用电的技术问题，提供了一种变电所线路保护不停电检修装置，其在对变电所内的线路保护测控装置进行检修时，使用另一个线路保护测控装置代替原有的线路保护测控装置工作，变电所无需断电，不影响用户用电。The purpose of the utility model is to overcome the current technical problem that the substation needs to be cut off when the line protection measurement and control device in the substation is overhauled, which affects the user's electricity consumption, and provides a non-stop maintenance device for the line protection of the substation. When overhauling the line protection measurement and control device in the substation, another line protection measurement and control device is used to replace the original line protection measurement and control device. The substation does not need to be powered off and does not affect the power consumption of users.
本实用新型的一种变电所线路保护不停电检修装置，所述变电所设有第一线路保护测控装置，包括第二线路保护测控装置、给第二线路保护测控装置供电的电源模块、转换开关QK1和转换开关QK2，转换开关QK1的触点2、触点6、触点10、触点14分别连接有一根第一测试线，转换开关QK1的触点3、触点6、触点9分别与第二线路保护测控装置的三个电流输入端电连接，转换开关QK1的触点16与第二线路保护测控装置的接地端电连接，转换开关QK1的触点1、触点5、触点9、触点13分别连接有一根第二测试线，转换开关QK1的触点1与转换开关QK1的触点3及转换开关QK2的触点2、触点4电连接，转换开关QK1的触点5与转换开关QK1的触点7及转换开关QK2的触点6、触点8电连接，转换开关QK1的触点9与转换开关QK1的触点11及转换开关QK2的触点10、触点12电连接，转换开关QK1的触点13与转换开关QK1的触点15及转换开关QK2的触点14、触点16电连接，转换开关QK2的触点1、触点3、触点5、触点7、触点9、触点11、触点13、触点15电连接。The utility model relates to a substation line protection non-stop maintenance device. The substation is provided with a first line protection measurement and control device, including a second line protection measurement and control device, a power supply module for supplying power to the second line protection measurement and control device, Transfer switch QK1 and transfer switch QK2, contact 2, contact 6, contact 10 and contact 14 of transfer switch QK1 are respectively connected with a first test line, contact 3, contact 6 and contact 1 of transfer switch QK1 9 are respectively electrically connected to the three current input ends of the second line protection measurement and control device, the contact 16 of the transfer switch QK1 is electrically connected to the ground terminal of the second line protection measurement and control device, and the contact 1, contact 5, Contact 9 and contact 13 are respectively connected with a second test line. Contact 1 of transfer switch QK1 is electrically connected with contact 3 of transfer switch QK1 and contact 2 and contact 4 of transfer switch QK2. The contact 5 is electrically connected with the contact 7 of the transfer switch QK1 and the contact 6 and the contact 8 of the transfer switch QK2, and the contact 9 of the transfer switch QK1 is connected with the contact 11 of the transfer switch QK1 and the contact 10, Contact 12 is electrically connected, contact 13 of transfer switch QK1 is electrically connected with contact 15 of transfer switch QK1 and contact 14 and contact 16 of transfer switch QK2, and contact 1, contact 3 and contact 1 of transfer switch QK2 5. Contact 7, contact 9, contact 11, contact 13, and contact 15 are electrically connected.
在本技术方案中，变电所设有第一线路保护测控装置和检测三相电流的三个电流互感器，三个电流互感器的二次侧绕组第一端分别与第一线路保护测控装置的三个电流输入端电连接，电流互感器的二次侧绕组第一端与第一线路保护测控装置的对应电流输入端之间串接有第一电流端子排，电流互感器的二次侧绕组第二端都与地线电连接，第一线路保护测控装置的接地端与地线电连接，第一线路保护测控装置的接地端与地线之间串接有第一电流端子排。In this technical solution, the substation is equipped with a first line protection measurement and control device and three current transformers for detecting three-phase current, and the first ends of the secondary side windings of the three current transformers are connected with the first line protection measurement and control device respectively. The three current input ends of the current transformer are electrically connected, the first current terminal block is connected in series between the first end of the secondary side winding of the current transformer and the corresponding current input end of the first line protection measurement and control device, and the secondary side of the current transformer The second ends of the windings are electrically connected to the ground wire, the ground end of the first line protection measurement and control device is electrically connected to the ground wire, and the first current terminal block is connected in series between the ground end of the first line protection measurement and control device and the ground wire.
要对变电所内的第一线路保护测控装置进行检修时，先将转换开关QK1转动到左边的傍路位置，使得转换开关QK1的触点1、触点2连通，转换开关QK1触点5、触点6连通，转换开关QK1触点9、触点10连通，转换开关QK1触点13、触点14连通；将转换开关QK2转动到中间的退出位置，使得转换开关QK2的触点1、触点2断开，转换开关QK2的触点3、触点4断开，转换开关QK2的触点5、触点6断开，转换开关QK2的触点7、触点8断开，转换开关QK2的触点9、触点10断开，转换开关QK2的触点11、触点12断开，转换开关QK2的触点13、触点14断开，转换开关QK2的触点15、触点16断开；When overhauling the first line protection measurement and control device in the substation, first turn the transfer switch QK1 to the side-by-side position on the left, so that the contacts 1 and 2 of the transfer switch QK1 are connected, and the contacts 5 and 5 of the transfer switch QK1 are connected. Contact 6 is connected, contact 9 and contact 10 of transfer switch QK1 are connected, contact 13 and contact 14 of transfer switch QK1 are connected; turn transfer switch QK2 to the middle exit position, so that contacts 1 and 10 of transfer switch QK2 are connected. Point 2 is disconnected, contact 3 and contact 4 of transfer switch QK2 are disconnected, contact 5 and contact 6 of transfer switch QK2 are disconnected, contact 7 and contact 8 of transfer switch QK2 are disconnected, transfer switch QK2 The contacts 9 and 10 of the transfer switch are disconnected, the contacts 11 and 12 of the transfer switch QK2 are disconnected, the contacts 13 and 14 of the transfer switch QK2 are disconnected, and the contacts 15 and 16 of the transfer switch QK2 are disconnected. disconnect;
接着，将转换开关QK1的触点2连接的第一测试线、触点6连接的第一测试线、触点10连接的第一测试线分别与第一线路保护测控装置的A相电输入端、B相电输入端、C相电输入端电连接，将转换开关QK1的触点1连接的第二测试线、触点5连接的第二测试线、触点9连接的第二测试线分别与三个电流互感器的二次侧绕组第一端电连接，将转换开关QK1的触点14连接的第一测试线与第一线路保护测控装置的接地端电连接，将转换开关QK1的触点13连接的第二测试线与地线电连接；Next, connect the first test line connected to the contact 2 of the transfer switch QK1, the first test line connected to the contact 6, and the first test line connected to the contact 10 with the A-phase electrical input terminal of the first line protection measurement and control device respectively. , B-phase electrical input terminal, and C-phase electrical input terminal are electrically connected, and the second test line connected to the contact 1 of the transfer switch QK1, the second test line connected to the contact 5, and the second test line connected to the contact 9 are respectively It is electrically connected to the first ends of the secondary side windings of the three current transformers, the first test line connected to the contact 14 of the transfer switch QK1 is electrically connected to the ground terminal of the first line protection measurement and control device, and the contact of the transfer switch QK1 The second test line connected to point 13 is electrically connected to the ground wire;
然后，将四个第一电流端子排的连接片断开；Then, disconnect the connecting pieces of the four first current terminal blocks;
最后，将转换开关QK2转动到左边的短路位置，使得转换开关QK2的触点1、触点2连通，转换开关QK2的触点5、触点6连通，转换开关QK2的触点9、触点10连通，转换开关QK2的触点13、触点14连通；将转换开关QK1转动到右边的工作位置，使得转换开关QK1的触点1、触点2断开，转换开关QK1触点5、触点6断开，转换开关QK1触点9、触点10断开，转换开关QK1触点13、触点14断开，转换开关QK1的触点3、触点4连通，转换开关QK1的触点7、触点8连通，转换开关QK1的触点11、触点12连通，转换开关QK1的触点15、触点16连通，使得第一线路保护测控装置与电流互感器断开，三个电流互感器的二次侧绕组第一端分别与第二线路保护测控装置的三个电流输入端电连接，第二线路保护测控装置代替第一线路保护测控装置监测变电所的三相电流。Finally, turn the transfer switch QK2 to the short-circuit position on the left, so that the contacts 1 and 2 of the transfer switch QK2 are connected, the contacts 5 and 6 of the transfer switch QK2 are connected, and the contacts 9 and 6 of the transfer switch QK2 are connected. 10 is connected, contact 13 and contact 14 of transfer switch QK2 are connected; turn transfer switch QK1 to the right working position, so that contact 1 and contact 2 of transfer switch QK1 are disconnected, and contact 5 and contact 2 of transfer switch QK1 are disconnected. Point 6 is disconnected, contact 9 and contact 10 of transfer switch QK1 are disconnected, contact 13 and contact 14 of transfer switch QK1 are disconnected, contact 3 and contact 4 of transfer switch QK1 are connected, and contacts of transfer switch QK1 7. Contact 8 is connected, contact 11 and contact 12 of transfer switch QK1 are connected, contact 15 and contact 16 of transfer switch QK1 are connected, so that the first line protection measurement and control device is disconnected from the current transformer, and the three currents The first end of the secondary side winding of the transformer is respectively electrically connected to the three current input ends of the second line protection measurement and control device, and the second line protection measurement and control device replaces the first line protection measurement and control device to monitor the three-phase current of the substation.
作为优选，所述一种变电所线路保护不停电检修装置还包括转换开关QK3和转换开关KK，转换开关QK3的触点2、触点6、触点10分别连接有一根第三测试线，转换开关QK3的触点1、触点5、触点9分别连接有一根第四测试线，转换开关QK3的触点2、触点4电连接，转换开关QK3的触点6、触点8电连接，转换开关QK3的触点10、触点12电连接，转换开关QK3的触点3与第二线路保护测控装置的合闸回路输出端电连接，转换开关QK3的触点7与第二线路保护测控装置的分闸回路输出端电连接，转换开关QK3的触点11与第二线路保护测控装置的接地端电连接，转换开关KK的触点1、触点2串接于第二线路保护测控装置的合闸回路中，转换开关KK的触点11、触点12串接于第二线路保护测控装置的分闸回路中。As a preference, said substation line protection non-stop maintenance device also includes a changeover switch QK3 and a changeover switch KK, the contacts 2, 6 and 10 of the changeover switch QK3 are respectively connected with a third test line, Contact 1, contact 5 and contact 9 of transfer switch QK3 are respectively connected with a fourth test line, contact 2 and contact 4 of transfer switch QK3 are electrically connected, and contacts 6 and 8 of transfer switch QK3 are electrically connected. Connection, contact 10 and contact 12 of transfer switch QK3 are electrically connected, contact 3 of transfer switch QK3 is electrically connected with the closing circuit output end of the second line protection measurement and control device, contact 7 of transfer switch QK3 is connected to the second line The opening circuit output terminal of the protection measurement and control device is electrically connected, the contact 11 of the changeover switch QK3 is electrically connected with the ground terminal of the second line protection measurement and control device, and the contacts 1 and 2 of the changeover switch KK are connected in series to the second line protection In the closing circuit of the measurement and control device, the contacts 11 and 12 of the transfer switch KK are connected in series in the opening circuit of the second line protection measurement and control device.
第一线路保护测控装置的合闸回路输出端与变电所的断路器的合闸信号输入端电连接，第一线路保护测控装置的分闸回路输出端与变电所的断路器的分闸信号输入端电连接，变电所的断路器的接地端与第一线路保护测控装置的接地端电连接，第一线路保护测控装置的合闸回路输出端与变电所的断路器的合闸信号输入端之间串接有第二电流端子排，第一线路保护测控装置的分闸回路输出端与变电所的断路器的分闸信号输入端之间串接有第二电流端子排，变电所的断路器的接地端与第一线路保护测控装置的接地端之间串接有第二电流端子排。The closing circuit output end of the first line protection measurement and control device is electrically connected to the closing signal input end of the circuit breaker of the substation, and the opening circuit output end of the first line protection measurement and control device is connected to the opening signal of the circuit breaker of the substation. The signal input terminal is electrically connected, the ground terminal of the circuit breaker of the substation is electrically connected with the ground terminal of the first line protection measurement and control device, and the closing circuit output terminal of the first line protection measurement and control device is connected with the closing circuit breaker of the substation. A second current terminal block is connected in series between the signal input ends, and a second current terminal block is connected in series between the opening circuit output end of the first line protection measurement and control device and the opening signal input end of the circuit breaker of the substation. A second current terminal block is connected in series between the ground terminal of the circuit breaker of the substation and the ground terminal of the first line protection measurement and control device.
要对变电所内的第一线路保护测控装置进行检修时，还进行下列操作：When overhauling the first line protection measurement and control device in the substation, the following operations should also be performed:
将转换开关QK3转动到左边的傍路位置，使得转换开关QK3的触点1、触点2连通，转换开关QK3的触点5、触点6连通，转换开关QK3的触点9、触点10连通；Turn the transfer switch QK3 to the bypass position on the left, so that the contacts 1 and 2 of the transfer switch QK3 are connected, the contacts 5 and 6 of the transfer switch QK3 are connected, and the contacts 9 and 10 of the transfer switch QK3 are connected. connected;
将转换开关QK3的触点2连接的第三测试线与变电所的断路器的合闸信号输入端电连接，将转换开关QK3的触点6连接的第三测试线与变电所的断路器的分闸信号输入端电连接，将转换开关QK3的触点10连接的第三测试线与变电所的断路器的接地端电连接；将转换开关QK3的触点1连接的第四测试线与第一线路保护测控装置的合闸回路输出端电连接，将转换开关QK3的触点5连接的第四测试线与第一线路保护测控装置的分闸回路输出端 电连接，将转换开关QK3的触点9连接的第四测试线与第一线路保护测控装置的接地端电连接；Connect the third test line connected to the contact 2 of the transfer switch QK3 with the closing signal input terminal of the circuit breaker of the substation, and connect the third test line connected with the contact 6 of the transfer switch QK3 with the circuit breaker of the substation. The opening signal input terminal of the transfer switch is electrically connected, and the third test line connected to the contact 10 of the transfer switch QK3 is electrically connected to the ground terminal of the circuit breaker of the substation; the fourth test line connected to the contact 1 of the transfer switch QK3 The line is electrically connected to the output end of the closing circuit of the first line protection measurement and control device, and the fourth test line connected to the contact 5 of the transfer switch QK3 is electrically connected to the output end of the opening circuit of the first line protection measurement and control device. The fourth test line connected to the contact 9 of QK3 is electrically connected to the ground terminal of the first line protection measurement and control device;
将三个第二电流端子排的连接片断开；Disconnect the connecting pieces of the three second current terminal blocks;
将转换开关QK3转动到右边的工作位置，使得转换开关QK3的触点1、触点2断开，转换开关QK3的触点5、触点6断开，转换开关QK3的触点9、触点10断开，转换开关QK3的触点3、触点4连通，转换开关QK3的触点7、触点8连通，转换开关QK3的触点11、触点12连通。Turn the transfer switch QK3 to the right working position, so that the contacts 1 and 2 of the transfer switch QK3 are disconnected, the contacts 5 and 6 of the transfer switch QK3 are disconnected, and the contacts 9 and 6 of the transfer switch QK3 are disconnected. 10 is disconnected, the contacts 3 and 4 of the transfer switch QK3 are connected, the contacts 7 and 8 of the transfer switch QK3 are connected, and the contacts 11 and 12 of the transfer switch QK3 are connected.
作为优选，所述第二线路保护测控装置为PDS-741A线路保护装置。Preferably, the second line protection measurement and control device is a PDS-741A line protection device.
作为优选，所述一种变电所线路保护不停电检修装置还包括三极双投开关ZK3，三极双投开关ZK3的三个输出端分别与第二线路保护测控装置的三个电压输入端电连接，三极双投开关ZK3的三个输入端分别连接有一根第五测试线，第二线路保护测控装置的中性线端和地线端分别连接有一根第五测试线。检修时，将第二线路保护测控装置的三个电压输入端连接的第五测试线分别与变电所中的三个电压互感器的二次绕组输出端电连接，第二线路保护测控装置的中性线端连接的第五测试线与电压互感器的中性线端电连接，第二线路保护测控装置的地线端连接的第五测试线与电压互感器的地线端电连接。As a preference, the substation line protection non-stop maintenance device also includes a three-pole double-throw switch ZK3, and the three output terminals of the three-pole double-throw switch ZK3 are respectively connected to the three voltage input terminals of the second line protection measurement and control device. For electrical connection, the three input terminals of the three-pole double-throw switch ZK3 are respectively connected to a fifth test line, and the neutral line end and the ground line end of the second line protection measurement and control device are respectively connected to a fifth test line. During maintenance, the fifth test line connected to the three voltage input terminals of the second line protection measurement and control device is electrically connected to the secondary winding output terminals of the three voltage transformers in the substation respectively, and the second line protection measurement and control device's The fifth test line connected to the neutral terminal is electrically connected to the neutral terminal of the voltage transformer, and the fifth test line connected to the ground terminal of the second line protection measurement and control device is electrically connected to the ground terminal of the voltage transformer.
作为优选，所述一种变电所线路保护不停电检修装置还包括壳体，所述第二线路保护测控装置、电源模块、转换开关QK1、转换开关QK2、转换开关QK3、转换开关KK、三极双投开关ZK3设置在壳体上。As a preference, the non-stop maintenance device for substation line protection also includes a housing, the second line protection measurement and control device, power module, changeover switch QK1, changeover switch QK2, changeover switch QK3, changeover switch KK, three The pole double-throw switch ZK3 is set on the housing.
作为优选，所述壳体底部四角处设有支脚，所述壳体两侧设有把手。Preferably, feet are provided at four corners of the bottom of the housing, and handles are provided on both sides of the housing.
本实用新型的有益效果是：在对变电所内的线路保护测控装置进行检修时，使用另一个线路保护测控装置代替原有的线路保护测控装置工作，变电所无需断电，不影响用户用电。The beneficial effect of the utility model is: when the line protection measurement and control device in the substation is overhauled, another line protection measurement and control device is used to replace the original line protection measurement and control device, and the substation does not need to be powered off, which does not affect the user's operation. Electricity.
附图说明Description of drawings
图1是本实用新型与变电所的电流互感器端连接的一种电路连接图；Fig. 1 is a kind of circuit connection diagram that the utility model is connected with the current transformer end of substation;
图2是本实用新型与变电所的断路器端连接的一种电路连接图；Fig. 2 is a kind of circuit connection diagram that the utility model is connected with the circuit breaker end of substation;
图3是电源模块与第二线路保护测控装置连接的一种电路连接图；Fig. 3 is a circuit connection diagram for connecting the power module to the second line protection measurement and control device;
图4是本实用新型与变电所的电压互感器端连接的一种电路连接图；Fig. 4 is a kind of circuit connection diagram that the utility model is connected with the voltage transformer end of substation;
图5是本实用新型的壳体的结构示意图。Fig. 5 is a structural schematic diagram of the housing of the present invention.
图中：1、第一线路保护测控装置，2、第二线路保护测控装置，3、电源模块，4、电流互感器，5、第一电流端子排，6、断路器，7、第二电流端子排，8、壳体，9、支脚，10、把手。In the figure: 1. The first line protection measurement and control device, 2. The second line protection measurement and control device, 3. Power module, 4. Current transformer, 5. The first current terminal block, 6. Circuit breaker, 7. The second current Terminal block, 8, housing, 9, legs, 10, handle.
具体实施方式detailed description
下面通过实施例，并结合附图，对本实用新型的技术方案作进一步具体的说明。The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
实施例：本实施例的一种变电所线路保护不停电检修装置，如图1、图2、图3所示，包括第二线路保护测控装置2、给第二线路保护测控装置2供电的电源模块3、转换开关QK1、转换开关QK2、转换开关QK3和转换开关KK，转换开关QK1的触点2、触点6、触点10、触点14分别连接有一根第一测试线，转换开关QK1的触点3、触点6、触点9分别与第二线路保护测控装置2的三个电流输入端电连接，转换开关QK1的触点16与第二线路保护测控装置2的接地端电连接，转换开关QK1的触点1、触点5、触点9、触点13分别连接有一根第二测试线，转换开关QK1的触点1与转换开关QK1的触点3及转换开关QK2的触点2、触点4电连接，转换开关QK1的触点5与转换开关QK1的触点7及转换开关QK2的触点6、触点8电连接，转换开关QK1的触点9与转换开关QK1的触点11及转换开关QK2的触点10、触点12电连接，转换开关QK1的触点13与转换开关QK1的触点15及转换开关QK2的触点14、触点16电连接，转换开关QK2的触点1、触点3、触点5、触点7、触点9、触点11、触点13、触点15电连接；Embodiment: A substation line protection non-stop maintenance device of this embodiment, as shown in Figure 1, Figure 2, and Figure 3, includes a second line protection measurement and control device 2, and a power supply for the second line protection measurement and control device 2 The power supply module 3, the transfer switch QK1, the transfer switch QK2, the transfer switch QK3 and the transfer switch KK, the contact 2, the contact 6, the contact 10 and the contact 14 of the transfer switch QK1 are respectively connected with a first test line, and the transfer switch Contact 3, contact 6, and contact 9 of QK1 are respectively electrically connected to the three current input ends of the second line protection measurement and control device 2, and contact 16 of the transfer switch QK1 is electrically connected to the ground terminal of the second line protection measurement and control device 2. Connection, contact 1, contact 5, contact 9 and contact 13 of transfer switch QK1 are respectively connected with a second test line, contact 1 of transfer switch QK1 and contact 3 of transfer switch QK1 and contact 3 of transfer switch QK2 Contact 2 and contact 4 are electrically connected, contact 5 of transfer switch QK1 is electrically connected with contact 7 of transfer switch QK1 and contact 6 and contact 8 of transfer switch QK2, contact 9 of transfer switch QK1 is connected with transfer switch The contact 11 of QK1 is electrically connected with the contact 10 and the contact 12 of the transfer switch QK2, the contact 13 of the transfer switch QK1 is electrically connected with the contact 15 of the transfer switch QK1 and the contact 14 and the contact 16 of the transfer switch QK2, Contact 1, contact 3, contact 5, contact 7, contact 9, contact 11, contact 13, contact 15 of changeover switch QK2 are electrically connected;
转换开关QK3的触点2、触点6、触点10分别连接有一根第三测试线，转换开关QK3的触点1、触点5、触点9分别连接有一根第四测试线，转换开关QK3的触点2、触点4电连接，转换开关QK3的触点6、触点8电连接，转换开关QK3的触点10、触点12电连接，转换开关QK3的触点3与第二线路保护测控装置的合闸回路输出端电连接，转换开关QK3的触点7与第二线路保护测控装置的分闸回路输出端电连接，转换开关QK3的触点11与第二线路保护测控装置的接地端电连接，转换开关KK的触点1、触点2串接于第二线路保护测控装置的合闸回路中，转换开关KK的触点11、触点12串接于第二线路保护测控装置的分闸回路中。Contact 2, contact 6, and contact 10 of transfer switch QK3 are respectively connected to a third test line, and contact 1, contact 5, and contact 9 of transfer switch QK3 are respectively connected to a fourth test line. Contact 2 and contact 4 of QK3 are electrically connected, contact 6 and contact 8 of transfer switch QK3 are electrically connected, contact 10 and contact 12 of transfer switch QK3 are electrically connected, contact 3 of transfer switch QK3 is connected to the second The closing circuit output end of the line protection measurement and control device is electrically connected, the contact 7 of the transfer switch QK3 is electrically connected with the opening circuit output end of the second line protection measurement and control device, and the contact 11 of the transfer switch QK3 is connected to the second line protection measurement and control device. The ground terminal of the transfer switch KK is connected in series with the contact 1 and contact 2 of the second line protection measurement and control device, and the contact 11 and contact 12 of the transfer switch KK are connected in series with the second line protection In the opening circuit of the measurement and control device.
变电所设有第一线路保护测控装置和检测三相电流的三个电流互感器，三个电流互感器的二次侧绕组第一端分别与第一线路保护测控装置的三个电流输入端电连接，电流互感器的二次侧绕组第一端与第一线路保护测控装置的对应电流输入端之间串接有第一电流端子排，电流互感器的二次侧绕组第二端都与地线电连接，第一线路保护测控装置的接地端与地线电连接，第一线路保护测控装置的接地端与地线之间串接有第一电流端子排；第一线路保护测控装置的合闸回路输出端与变电所的断路器的合闸信号输入端电连接，第一线路保护测控装置的分闸回路输出端与变电所的断路器的分闸信号输入端电连接，变电所的断路器的接地端与第一线路保护测控装置的接地端电连接，第一线路保护测控装置的合闸回路输出端与变电所的断路器的合闸信号输入端之间串接有第二电流端子排，第一线路保护测控装置的分闸回路输出端与变电所的断路器的分闸信号输入端之间串接有第二电流端子排，变电所的断路器的接地端与第一线路保护测控装置的接地端之间串接有第二电流端子排。The substation is equipped with the first line protection measurement and control device and three current transformers for detecting the three-phase current. Electrically connected, the first current terminal row is connected in series between the first end of the secondary side winding of the current transformer and the corresponding current input end of the first line protection measurement and control device, and the second end of the secondary side winding of the current transformer is connected to the The ground wire is electrically connected, the ground end of the first line protection measurement and control device is electrically connected to the ground wire, and the first current terminal block is connected in series between the ground end of the first line protection measurement and control device and the ground wire; the first line protection measurement and control device The closing circuit output end is electrically connected to the closing signal input end of the circuit breaker in the substation, and the opening circuit output end of the first line protection measurement and control device is electrically connected to the opening signal input end of the circuit breaker in the substation. The ground terminal of the circuit breaker in the power substation is electrically connected to the ground terminal of the first line protection measurement and control device, and the closing circuit output terminal of the first line protection measurement and control device is connected in series with the closing signal input terminal of the circuit breaker in the substation There is a second current terminal block, and the second current terminal block is connected in series between the opening circuit output end of the first line protection measurement and control device and the opening signal input end of the circuit breaker in the substation. A second current terminal block is connected in series between the ground terminal and the ground terminal of the first line protection, measurement and control device.
第二线路保护测控装置2为PDS-741A线路保护装置。The second line protection measurement and control device 2 is a PDS-741A line protection device.
如图4所示，还包括三极双投开关ZK3，三极双投开关ZK3的三个输出端分别与第二线路保护测控装置的三个电压输入端电连接，三极双投开关ZK3的三个输入端分别连接有一根第五测试线，第二线路保护测控装置的中性线端和地线端分别连接有一根第五测试线。检修时，将第二线路保护测控装置的三个电压输入端连接的第五测试线分别与变电所中的三个电压互感器的二次绕组输出端电连接，第二线路保护测控装置的中性线端连接的第五测试线与电压互感器的中性线端电连接，第二线路保护测控装置的地线端连接的第五测试线与电压互感器的地线端电连接。As shown in Figure 4, it also includes a three-pole double-throw switch ZK3, the three output terminals of the three-pole double-throw switch ZK3 are respectively electrically connected to the three voltage input terminals of the second line protection measurement and control device, and the three-pole double-throw switch ZK3 The three input terminals are respectively connected with a fifth test line, and the neutral line end and the ground line end of the second line protection measurement and control device are respectively connected with a fifth test line. During maintenance, the fifth test line connected to the three voltage input terminals of the second line protection measurement and control device is electrically connected to the secondary winding output terminals of the three voltage transformers in the substation respectively, and the second line protection measurement and control device's The fifth test line connected to the neutral terminal is electrically connected to the neutral terminal of the voltage transformer, and the fifth test line connected to the ground terminal of the second line protection measurement and control device is electrically connected to the ground terminal of the voltage transformer.
如图5所示，变电所线路保护不停电检修装置还包括壳体8，第二线路保护测控装置2、电源模块3、转换开关QK1、转换开关QK2、转换开关QK3、转换开关KK、三极双投开关ZK3设置在壳体8上，壳体8底部四角处设有支脚9，壳体8两侧设有把手10。把手便于工作人员搬运。As shown in Figure 5, the substation line protection non-stop maintenance device also includes a housing 8, a second line protection measurement and control device 2, a power module 3, a transfer switch QK1, a transfer switch QK2, a transfer switch QK3, a transfer switch KK, three The pole double-throw switch ZK3 is arranged on the housing 8 , the four corners of the bottom of the housing 8 are provided with feet 9 , and the two sides of the housing 8 are provided with handles 10 . The handle is convenient for the staff to carry.
要对变电所内的第一线路保护测控装置进行检修时，将转换开关QK1转动到左边的傍路位置，使得转换开关QK1的触点1、触点2连通，转换开关QK1触点5、触点6连通，转换开关QK1触点9、触点10连通，转换开关QK1触点13、触点14连通；将转换开关QK2转动到中间的退出位置，使得转换开关QK2的触点1、触点2断开，转换开关QK2的触点3、触点4断开，转换开关QK2的触点5、触点6断开，转换开关QK2的触点7、触点8断开，转换开关QK2的触点9、触点10断开，转换开关QK2的触点11、触点12断开，转换开关QK2的触点13、触点14断开，转换开关QK2的触点15、触点16断开；When overhauling the first line protection measurement and control device in the substation, turn the transfer switch QK1 to the left bypass position, so that the contacts 1 and 2 of the transfer switch QK1 are connected, and the contacts 5 and 5 of the transfer switch QK1 are connected. Point 6 is connected, contact 9 and contact 10 of transfer switch QK1 are connected, contact 13 and contact 14 of transfer switch QK1 are connected; turn transfer switch QK2 to the middle exit position, so that contacts 1 and 10 of transfer switch QK2 2 is disconnected, contact 3 and contact 4 of transfer switch QK2 are disconnected, contact 5 and contact 6 of transfer switch QK2 are disconnected, contact 7 and contact 8 of transfer switch QK2 are disconnected, and contact 7 and contact 8 of transfer switch QK2 are disconnected. Contacts 9 and 10 are disconnected, contacts 11 and 12 of transfer switch QK2 are disconnected, contacts 13 and 14 of transfer switch QK2 are disconnected, contacts 15 and 16 of transfer switch QK2 are disconnected open;
将转换开关QK1的触点2连接的第一测试线、触点6连接的第一测试线、触点10连接的第一测试线分别与第一线路保护测控装置的A相电输入端、B相电输入端、C相电输入端电连接，将转换开关QK1的触点1连接的第二测试线、触点5连接的第二测试线、触点9连接的第二测试线分别与三个电流互感器的二次侧绕组第一端电连接，将转换开关QK1的触点14连接的第一测试线与第一线路保护测控装置的接地端电连接，将转换开关QK1的触点13连接的第二测试线与地线电连接；Connect the first test line connected to the contact 2 of the changeover switch QK1, the first test line connected to the contact 6, and the first test line connected to the contact 10 with the A-phase electrical input terminal and the B-phase electrical input terminal of the first line protection measurement and control device respectively. The phase electric input end and the C phase electric input end are electrically connected, and the second test line connected with the contact 1 of the transfer switch QK1, the second test line connected with the contact 5, and the second test line connected with the contact 9 are respectively connected with the three The first end of the secondary side winding of a current transformer is electrically connected, the first test line connected to the contact 14 of the changeover switch QK1 is electrically connected to the ground terminal of the first line protection measurement and control device, and the contact 13 of the changeover switch QK1 is electrically connected The connected second test wire is electrically connected to the ground wire;
将四个第一电流端子排的连接片断开；Disconnect the connecting pieces of the four first current terminal blocks;
将转换开关QK2转动到左边的短路位置，使得转换开关QK2的触点1、触点2连通，转换开关QK2的触点5、触点6连通，转换开关QK2的触点9、触点10连通，转换开关QK2的触点13、触点14连通；将转换开关QK1转动到右边的工作位置，使得转换开关QK1的触点1、触点2断开，转换开关QK1触点5、触点6断开，转换开关QK1触点9、触点10断开，转换开关QK1触点13、触点14断开，转换开关QK1的触点3、触点4连通，转换开关QK1的触点7、触点8连通，转换开关QK1的触点11、触点12连通，转换开关QK1的触点15、触点16连通，使得第一线路保护测控装置与电流互感器断开，三个电流互感器的二次侧绕组第一端分别与第二线路保护测控装置的三个电流输入端电连接，第二线路保护测控装置代替第一线路保护测控装置监测变电所的三相电流；Turn the transfer switch QK2 to the short-circuit position on the left, so that the contacts 1 and 2 of the transfer switch QK2 are connected, the contacts 5 and 6 of the transfer switch QK2 are connected, and the contacts 9 and 10 of the transfer switch QK2 are connected. , the contacts 13 and 14 of the changeover switch QK2 are connected; turn the changeover switch QK1 to the right working position, so that the contacts 1 and 2 of the changeover switch QK1 are disconnected, and the contacts 5 and 6 of the changeover switch QK1 disconnected, transfer switch QK1 contact 9, contact 10 disconnected, transfer switch QK1 contact 13, contact 14 disconnected, transfer switch QK1 contact 3, contact 4 connected, transfer switch QK1 contact 7, Contact 8 is connected, contact 11 and contact 12 of transfer switch QK1 are connected, contact 15 and contact 16 of transfer switch QK1 are connected, so that the first line protection measurement and control device is disconnected from the current transformer, and the three current transformers The first ends of the secondary side windings are respectively electrically connected to the three current input terminals of the second line protection measurement and control device, and the second line protection measurement and control device replaces the first line protection measurement and control device to monitor the three-phase current of the substation;
将转换开关QK3转动到左边的傍路位置，使得转换开关QK3的触点1、触点2连通，转换开关QK3的触点5、触点6连通，转换开关QK3的触点9、触点10连通；Turn the transfer switch QK3 to the bypass position on the left, so that the contacts 1 and 2 of the transfer switch QK3 are connected, the contacts 5 and 6 of the transfer switch QK3 are connected, and the contacts 9 and 10 of the transfer switch QK3 are connected. connected;
将转换开关QK3的触点2连接的第三测试线与变电所的断路器的合闸信号输入端电连接，将转换开关QK3的触点6连接的第三测试线与变电所的断路器的分闸信号输入端电连接，将转换开关QK3的触点10连接的第三测试线与变电所的断路器的接地端电连接；将转换开关QK3的触点1连接的第四测试线与第一线路保护测控装置的合闸回路输出端电连接，将转换开关QK3的触点5连接的第四测试线与第一线路保护测控装置的分闸回路输出端 电连接，将转换开关QK3的触点9连接的第四测试线与第一线路保护测控装置的接地端电连接；Connect the third test line connected to the contact 2 of the transfer switch QK3 with the closing signal input terminal of the circuit breaker of the substation, and connect the third test line connected with the contact 6 of the transfer switch QK3 with the circuit breaker of the substation. The opening signal input terminal of the transfer switch is electrically connected, and the third test line connected to the contact 10 of the transfer switch QK3 is electrically connected to the ground terminal of the circuit breaker of the substation; the fourth test line connected to the contact 1 of the transfer switch QK3 The line is electrically connected to the output end of the closing circuit of the first line protection measurement and control device, and the fourth test line connected to the contact 5 of the transfer switch QK3 is electrically connected to the output end of the opening circuit of the first line protection measurement and control device. The fourth test line connected to the contact 9 of QK3 is electrically connected to the ground terminal of the first line protection measurement and control device;
将三个第二电流端子排的连接片断开；Disconnect the connecting pieces of the three second current terminal blocks;
将转换开关QK3转动到右边的工作位置，使得转换开关QK3的触点1、触点2断开，转换开关QK3的触点5、触点6断开，转换开关QK3的触点9、触点10断开，转换开关QK3的触点3、触点4连通，转换开关QK3的触点7、触点8连通，转换开关QK3的触点11、触点12连通。Turn the transfer switch QK3 to the right working position, so that the contacts 1 and 2 of the transfer switch QK3 are disconnected, the contacts 5 and 6 of the transfer switch QK3 are disconnected, and the contacts 9 and 6 of the transfer switch QK3 are disconnected. 10 is disconnected, the contacts 3 and 4 of the transfer switch QK3 are connected, the contacts 7 and 8 of the transfer switch QK3 are connected, and the contacts 11 and 12 of the transfer switch QK3 are connected.
此时，第二线路保护测控装置代替第一线路保护测控装置工作，且此时第一线路保护测控装置处于断电状态，工作人员可对第一线路保护测控装置进行检修。At this time, the second line protection measurement and control device works instead of the first line protection measurement and control device, and at this time the first line protection measurement and control device is in a power-off state, and the staff can overhaul the first line protection measurement and control device.
第一线路保护测控装置检修完成后，要将检修装置退出时，将转换开关QK2转动到左边的短路位置，将转换开关QK1转动到左边的傍路位置；After the maintenance of the first line protection measurement and control device is completed, when the maintenance device is to be withdrawn, turn the transfer switch QK2 to the left short-circuit position, and turn the transfer switch QK1 to the left bypass position;
将转换开关QK2转动到中间的退出位置；Turn the transfer switch QK2 to the middle exit position;
将四个第一电流端子排的连接片连通；connecting the connecting pieces of the four first current terminal blocks;
将第一测试线和第二测试线拆除；Remove the first test line and the second test line;
将转换开关QK1转动到中间的退出位置；Turn the transfer switch QK1 to the middle exit position;
将转换开关QK3转动到左边的傍路位置；Turn the diverter switch QK3 to the side-by-side position on the left;
将三个第二电流端子排的连接片连通；connecting the connecting pieces of the three second current terminal blocks;
将第三测试线和第四测试线拆除；Remove the third test line and the fourth test line;
将转换开关QK3转动到中间的退出位置，完成退出操作。Turn the transfer switch QK3 to the exit position in the middle to complete the exit operation.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457545.4U CN206710489U (en) | 2017-04-27 | 2017-04-27 | A kind of electric substation's route protection service without power-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457545.4U CN206710489U (en) | 2017-04-27 | 2017-04-27 | A kind of electric substation's route protection service without power-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710489U true CN206710489U (en) | 2017-12-05 |
Family
ID=60459230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720457545.4U Active CN206710489U (en) | 2017-04-27 | 2017-04-27 | A kind of electric substation's route protection service without power-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206710489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775550A (en) * | 2020-06-09 | 2021-12-10 | 中国能源建设集团江苏省电力设计院有限公司 | Ventilation control box for long-distance high-voltage cable tunnel |
-
2017
- 2017-04-27 CN CN201720457545.4U patent/CN206710489U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775550A (en) * | 2020-06-09 | 2021-12-10 | 中国能源建设集团江苏省电力设计院有限公司 | Ventilation control box for long-distance high-voltage cable tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102543609A (en) | Leakage circuit breaker for distribution board and distribution board system | |
| CN103515956A (en) | Voltage switching automatic paralleling device | |
| CN209561900U (en) | Intelligent power supply and distribution system | |
| CN202093096U (en) | Low-voltage short-circuit impedance test device of transformer | |
| CN218886001U (en) | Used variable low-voltage side no-load impact test device with time delay protection function | |
| CN206710489U (en) | A kind of electric substation's route protection service without power-off device | |
| CN204065175U (en) | A kind of mimic-disconnecting switch being applicable to intelligent substation multi-voltage grade operation circuit | |
| CN204992575U (en) | Take zero line and phase line broken string to detect circuit breaker of function and open circuit system | |
| CN202121212U (en) | Circuit control device of low voltage power distribution cabinet | |
| CN103904610A (en) | Movable line protection device | |
| CN107121619B (en) | A kind of electric substation's route protection service without power-off device and repair method | |
| CN203277237U (en) | Universal breaker | |
| CN207719884U (en) | A kind of movable type AC/DC integrated Power supply alteration load transfer device | |
| CN202997335U (en) | Ring network cabinet | |
| CN201576011U (en) | Alternating current-direct current comprehensive load box | |
| CN213484506U (en) | A neutral fault protector | |
| CN201352253Y (en) | Testing box for electrical protection tests | |
| CN215681842U (en) | High-voltage control system of energy storage system | |
| CN205017101U (en) | Switching -on device is divided in a distant place | |
| CN203367776U (en) | Knife switch box | |
| CN203352275U (en) | Stand-by power source automatic throw-in device transmission testing instrument | |
| CN204086478U (en) | residual current operating protector | |
| CN103855714B (en) | A kind of integrated automation converting station system | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet | |
| CN203277254U (en) | A universal circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |