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Distribution network switching station relay protection operation optimization method

An optimization method and relay protection technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as dead zone faults, power outages in distribution network switching stations, etc., to increase the configuration of busbar protection and increase segmental delay overcurrent protection , Optimize the effect of charging protection logic

Inactive Publication Date: 2015-11-04
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Problems solved by technology

[0008] The invention provides an operation optimization method for relay protection of distribution network switching stations, which well solves the problem of power loss in the entire distribution network switching station when the busbar is charged in the dead zone fault and the parallel operation of the busbars is faulty.

Method used

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  • Distribution network switching station relay protection operation optimization method
  • Distribution network switching station relay protection operation optimization method
  • Distribution network switching station relay protection operation optimization method

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Embodiment Construction

[0034] based on the following Figure 1 to Figure 5 , specifically explain the preferred embodiment of the present invention.

[0035] The invention provides a relay protection operation optimization method for a switch station of a distribution network, which includes an optimal operation method for busbar charging in a dead zone fault and an optimal operation method for parallel operation busbar faults.

[0036] The described optimal operation method for the bus charging in the dead zone fault adopts the following optimization method:

[0037] Optimization method 1. Add segmental rheology and improve charging protection action logic.

[0038] Step S1, such as figure 2 As shown, the first sub-section rheology TA1 is installed on one side of the sub-section switch QF5, and the second sub-section rheology TA2 is installed on the other side (the above-mentioned sub-section rheology is a current transformer), and the second The first segmental rheology TA1 and the second segm...

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Abstract

The invention provides a distribution network switching station relay protection operation optimization method. The distribution network switching station relay protection operation optimization method gives a good solution to the problem that the whole distribution network switching station loses electric power because a bus charger malfunctions in a dead zone and a bus malfunctions during the paralleling operation process by mounting segmented rheology, optimizing charging protection logic, increasing segmented time-delay over-current protection, configuring bus protection, and the like.

Description

technical field [0001] The invention relates to a method for optimizing the relay protection operation of a distribution network switching station. Background technique [0002] The distribution network switch station is a distribution station built to solve the shortage of substation feeder switch cabinets and reduce the number of cables on the same path. It is an important facility for load transfer and shunt in the distribution network. The distribution network switch station will become increasingly expanding One of the mainstream wiring methods in the distribution network system. [0003] The power incoming lines of the two bus sections of the switch station are respectively connected to different substations, or the two sections of the substation run separately in the middle and low voltage buses, so that the two bus sections of each switching station belong to two power sources, and the incoming lines at the switching station Both the outlet and outlet are equipped w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22
Inventor 李春杰陈东顾黎强周元祺潘晨亮周阮瑜吴泳英潘华明颜晟盛佳蓉宓佳璟郦鹤松夏威
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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