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A realization method of circuit breaker reclosing in intelligent substation

A technology of intelligent substation and its implementation method, which is applied in the direction of circuit devices, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., to achieve the effects of reducing interference, strong inheritability, and strong scalability

Active Publication Date: 2019-07-23
BEIJING SIFANG JIBAO AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the current reclosing configuration method, when using non-voltage detection, voltage detection or synchronous detection, the extraction voltage must be introduced to realize the reclosing function.
Since the line and circuit breaker protection are installed close to the equipment to be protected at the interval, the introduction of the extraction voltage needs to be realized across the interval, which will pose a challenge to the existing general data collection mode

Method used

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  • A realization method of circuit breaker reclosing in intelligent substation
  • A realization method of circuit breaker reclosing in intelligent substation
  • A realization method of circuit breaker reclosing in intelligent substation

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Embodiment Construction

[0032] The technical solution of the present invention will be further introduced in detail below in conjunction with the accompanying drawings of the description.

[0033] as attached figure 1 As shown, the reclosing function will be transplanted to each bus protection sub-unit; each bus protection sub-unit directly collects the current and voltage of the interval through the cable, and the sub-units close to the bus voltage collect the bus voltage through the cable, and at the same time through the The cable completes the tripping and closing functions of the circuit breaker in this compartment;

[0034] Each busbar protection sub-machine is connected to the protection private network, and subscribes to the line protection tripping information and circuit breaker position information at their respective intervals through optical fiber Ethernet;

[0035] Each busbar protection sub-machine communicates and connects through a bidirectional double protection ring network, and p...

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Abstract

The invention provides an implementation method of circuit breaker reclosing of an intelligent substation, and is mainly applied to the intelligent substation of 110kV and above voltage grade. A localbus protection device is utilized, the reclosing function preset in line protection or circuit breaker protection is implemented by the mode of software transplantation and the corresponding GOOSE subscription virtual terminal is added in the model file to implement the reclosing function. With application of the method, the reclosing function of the circuit breaker of the same voltage grade of the whole station can be implemented in an integration way, and the objectives of saving cable investment, reducing the workload of cable construction, enhancing the reliability and enhancing the expandability can be achieved.

Description

technical field [0001] This method is applicable to busbar local protection devices, which are generally used in intelligent substations with voltage levels of 110kV and above. Background technique [0002] According to the relevant technical regulations of our country, when the main wiring of substations with a voltage level of 110kV and above adopts a half-wiring mode, the reclosing function is configured in the circuit breaker protection; when the main wiring adopts a double-bus wiring mode, the reclosing function is configured in the line protection. [0003] In order to finally realize the modularization of secondary equipment for relay protection in smart substations, the local release of secondary equipment for relay protection has been carried out. After the protection device is lowered on the ground, the number of cables used can be greatly saved and the difficulty of laying can be reduced. However, based on the current reclosing configuration method, when no-volta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/22H02H7/26H02H3/06H02H1/00
CPCH02H1/0061H02H1/0084H02H3/06H02H7/22H02H7/26
Inventor 伍叶凯苏黎明黄少锋张月品余锐邹东霞刘永信
Owner BEIJING SIFANG JIBAO AUTOMATION
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