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Power distribution network stability analysis method

A power system and analysis method technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of poor online real-time performance, can not well meet the stability evaluation of distribution network, low efficiency, etc., and achieve comprehensive improvement. The ability of operation monitoring and analysis, the improvement of stability, the effect of improving efficiency and effect

Active Publication Date: 2019-04-12
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

However, most of the modeling and algorithm theories are based on fixed operating modes, constant component reliability models and parameters, ignoring the influence of changes in real-time operating conditions on the probability of component outages, and ignoring the real-time changes in unit operating modes and loads The impact of real-time operating conditions such as network structure changes on the consequences of failures
Due to its weak online real-time performance, the traditional static stability analysis cannot satisfy the distribution network stability evaluation in operation, and the efficiency is low

Method used

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Embodiment Construction

[0013] In order to better understand the present invention, the method of the present invention will be further described below with reference to the description of the embodiments in conjunction with the accompanying drawings.

[0014] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In the embodiments, well-known methods, procedures, components have not been described in detail so as not to unnecessarily obscure the embodiments.

[0015] see figure 1 As shown, a distribution network stability analysis method in a power system of the present invention comprises the following steps:

[0016] Step 1. Simplify the topology of the network structure of the large-scale actual distribution network to obtain the simplified distribution network struct...

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Abstract

The invention provides a power distribution network stability analysis method in an electric power system; the topological structure of the network structure of a large-scale actual power distributionnetwork is simplified, and the simplified power distribution network structure is obtained, so that accurate analysis and calculation are facilitated; the stability initial parameters of the power distribution network after simplification are counted, and the stability initial parameters of the power distribution automation system are counted; the power failure information of the load point of the power distribution network is counted; the stability initial parameters and the power failure information are combined for carrying out fault influence analysis on the power distribution network elements by adopting a traversing method, and a load point outage information base is established; and the load point outage information base is combined, and power distribution network stability analysis and prediction are carried out, so that the comprehensive operation monitoring analysis capability of the power distribution network is remarkably improved.

Description

technical field [0001] The invention belongs to the field of power system safety, and in particular relates to a method for analyzing the stability of a distribution network in a power system. Background technique [0002] The distribution network is located at the end of the power system and is directly connected to users. It has the distinctive characteristics of wide geographical distribution, large-scale power grid, various types of equipment, diverse network connections, and variable operation modes. The current distribution network planning, construction and operation and maintenance The work requires a high level of stability, and the partial load reliability rate even reaches a level above 99.9999%. Therefore, it is necessary to improve the stability level of the distribution network through targeted construction and transformation, operation and maintenance, equipment investment and optimized operation mode. [0003] In order to improve the stability of the distribu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 盛万兴王宏刚刁赢龙刘杨涛田洪迅刘科研谈军黄仁乐王存平邹均胡丽娟叶学顺董伟杰
Owner CHINA ELECTRIC POWER RES INST
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