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Power system backup protection method and device

A power system and backup protection technology, applied in the field of power systems, can solve problems such as power outages, large-area system outages, and low reliability of power flow transfer dangerous lines, so as to improve reliability, avoid power system outages, and avoid large-area Effect of blackout

Inactive Publication Date: 2018-04-24
GLOBAL ENERGY INTERCONNECTION RES INST EURO GMBH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that in the prior art, the reliability of the power flow transfer dangerous line calculated by prediction is low, so that if the prediction fails, it is easy to cause system shutdown and large-scale power outage, thereby providing a backup protection of the power system Method and device

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  • Power system backup protection method and device
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  • Power system backup protection method and device

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Embodiment Construction

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the field of power systems, in particular to a power system backup protection method and device. The power system backup protection method includes the following steps: judging whether a target power system is overloaded or not; when the target power system is overloaded, determining an overloaded line in the target power system; determining the overhead bearing time of the overloaded line; and reducing the load of the overloaded line within the overhead bearing time of the overloaded line. Through the method and the device, power flow transfer overload caused by backup protection executed on a line is avoided, and power system outage and large-area blackout are avoided. Compared with the prior art in which a line with power flow transfer risk is calculated throughprediction, the consequence caused by prediction failure is avoided, and the reliability is greatly improved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a backup protection method and device for a power system. Background technique [0002] The relay protection device is an important part of the power system security system. In order to better ensure the robustness and security of the power system network, the operating settings and protection ranges of relay protection devices and various other stability control equipment should also adapt to various common operating modes of modern power systems as much as possible. and local topological changes. At the same time, the mutual cooperation between relay protection should also be able to adapt to the more complex topology of the modern power grid with the fusion of ring and radial shapes. With the rapid development of renewable energy and distributed energy, large-capacity transmission lines, transformers, and generator sets have been widely used in power systems. It is becoming mor...

Claims

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Application Information

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IPC IPC(8): H02J3/14
CPCH02J3/14Y02B70/3225Y04S20/222
Inventor 雷宪章兰天蔡力钧蓝元良尹航董蓉
Owner GLOBAL ENERGY INTERCONNECTION RES INST EURO GMBH