A comprehensive optimization method for reclosing and emergency control in power grid based on dsr

An emergency control and optimization method technology, which is applied in the direction of automatic disconnection emergency protection devices, emergency protection circuit devices, electrical components, etc., can solve problems such as inability to distinguish permanent or transient faults, system stability and short-circuit hazards, etc., to achieve The effect of increasing the margin of the safety zone, reducing the economic cost, and reducing the amount of machine cutting and load cutting

Inactive Publication Date: 2017-06-09
TIANJIN UNIV
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Problems solved by technology

However, the current automatic reclosing switch in the power system cannot distinguish whether the fault is permanent or transient. If the line fault is transient, the reclosing is successful; Hazards in the event of a short circuit during normal operation

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  • A comprehensive optimization method for reclosing and emergency control in power grid based on dsr
  • A comprehensive optimization method for reclosing and emergency control in power grid based on dsr
  • A comprehensive optimization method for reclosing and emergency control in power grid based on dsr

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

[0028] 1. About the input and output parameters of this comprehensive optimization system

[0029] This comprehensive optimization system aims to make up for the defect that the original power system control and tuning system is only aimed at emergency control or reclosing and can not control actions uniformly, which leads to the excessive threat of secondary impact to the transient stability of the system in the case of permanent faults.

[0030] The system input parameter is divided into two parts: the offline calculation part and the online calculation part. The input parameters required for the offline calculation part are: system topology (nodes, line relationships, transformer distribution, line impedance admittance and other systems, line parameters), and short-circuit mu...

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Abstract

The invention discloses a comprehensive optimization method for reclosing and emergency control of a power grid based on DSR. The method includes the following steps: analyzing the system reclosing time domain by using a dynamic security domain method; combining the emergency control quantification of the dynamic security domain Analysis and optimal time emergency control strategy; comprehensive optimization of reclosing and emergency control. The present invention proposes an optimal reclosing time scheme based on the dynamic safety domain in the event of a permanent fault. This method can effectively relieve the impact of unsuccessful reclosing on system stability and improve the safety limit of the system.

Description

technical field [0001] The invention relates to the fields of electrical equipment and electrical engineering, in particular to a comprehensive optimization method for reclosing and emergency control under a power grid based on DSR. Background technique [0002] Automatic reclosing is a key technology in the development of power systems. After a long period of research and development, it has formed a variety of specialized branches. With the continuous deepening of modern power system research, the recloser has developed towards the direction of modularization, integration and intelligence. At present, the reclosing research at home and abroad is mainly divided into the following two parts: "adaptive reclosing" research based on fault type discrimination (transient fault and permanent fault) and optimal time reclosing research based on transient stability considerations . [0003] The purpose of automatic reclosing is to put the line back into operation after the transien...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H02H3/06
Inventor 刘怀东王曦冉马林吴贺崔晓君
Owner TIANJIN UNIV
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