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Fault handling method for distribution network with distributed generation

A distributed power supply and distribution network failure technology, applied in the direction of power network operating system integration, electrical components, AC network voltage adjustment, etc., can solve problems such as protection refusal, distribution network protection influence, misoperation, etc., and achieve rapid isolation , Ensure standardization, openness, and clear structure

Active Publication Date: 2015-08-12
JIANGSU ELECTRIC POWER COMPANY YANGZHOU POWER +3
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AI Technical Summary

Problems solved by technology

After the distributed power supply is connected to the distribution network, it will also have a certain degree of impact on the protection of the distribution network, such as protection refusal to operate, protection malfunction, etc., making traditional fault handling methods no longer applicable

Method used

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  • Fault handling method for distribution network with distributed generation
  • Fault handling method for distribution network with distributed generation

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Embodiment Construction

[0020] The distribution network feeder automation technology solution with distributed power integrated in the distribution automation system includes a set of distribution automation system (DMS) or energy management system (EMS) with standard components, and a set of distributed power supply Affected distribution network protection device, a set of distribution network fault processing function module including distributed power supply. The distribution automation system (DMS) or the energy management system (EMS) is used as the support platform for the distribution network fault processing function module; the distribution network protection device is responsible for collecting signals such as directional overcurrent in the distribution network, and provides a basis for fault location during fault analysis The distribution network fault processing function module containing distributed power is responsible for locating the faults in the distribution network, and completing f...

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Abstract

The invention discloses a fault handling method for a distribution network including a distributed power source. The fault handling method is characterized by including the steps of firstly, performing fault location, namely monitoring all remote signal displacement information in the distribution network, selecting fault signals existing in the distribution network according to starting conditions, starting fault analysis if faults are acquired, and performing fault location according to a location analysis method of directional signals; secondly, performing fault isolation, namely performing fault isolation analysis according to the principle of least power loss of load, and providing an isolation strategy; and thirdly, performing fault recovery, integrating the distributed power source into a fault recovery decision under the premise of complying with related rules and standards, and increasing power reliability of the distribution network while fully utilizing the distributed power source. By the fault handling method for the distribution network including the distributed power source, accurate location and quick isolation are provided for faults of the distribution network including the distributed power source, and accordingly fault recovery of the distribution network and adjustment of operation manner after recovery are achieved.

Description

technical field [0001] The invention relates to a fault processing method for a distribution network system containing distributed power sources, and belongs to the field of power systems and automation thereof. Background technique [0002] With the rapid development of economy and technology, energy and environmental problems have become increasingly prominent, and distributed power generation technology has attracted more and more attention because of its unique environmental protection and economy. Distributed power sources mainly include micro-gas turbines, solar photovoltaics, fuel cells, and wind power generation. After the distributed power supply is connected to the distribution network, the structure and operation mode of the low-voltage level of the power system will be changed. The distribution network will change from a strictly vertical radial network to a horizontal network with power supply. [0003] Feeder automation is an important function of the distribu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H02J3/14
CPCY04S20/222Y02B70/3225
Inventor 杨岳苏标龙杜红卫朱俊杨金喜张怡然陈晖谭志军
Owner JIANGSU ELECTRIC POWER COMPANY YANGZHOU POWER
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