Method for evaluating non-linear dynamic state with loading voltage characteristics

A technology of nonlinear dynamic and voltage characteristics, applied in the direction of calculation, measurement of current/voltage, electrical components, etc., can solve problems such as no consideration
CN101075741AInactive Publication Date: 2007-11-21ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2007-11-21
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

This is a nonlinear dynamic state estimation method based combined measurement by PMU and SCADA. A static module is established on the history data of SCADA. In case of non-measurement for part of nodes, conduct an accurate measure on adjacent nodes by PMU. An estimation on the non-measured nodes is made by Gauss-Seidel method.
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Description

technical field

[0001] The invention belongs to the technical field of power system safety defense, and in particular relates to a nonlinear dynamic state estimation algorithm considering load voltage characteristics. Background technique

[0002] In recent years, many large-scale power outages have occurred around the world, which has aroused people's attention on the prevention and control of large-scale catastrophes in large-scale power systems. The wide-area measurement system (WAMS) based on the global positioning system (global positioning system, GPS) is a new technology developed in recent years. Accurately measure the bus voltage generator power angle in the network and monitor the whole network in real time.

[0003] In actual engineering, the change of power network topology and PMU failure may lead to the loss of observability in some areas of the power grid, which in turn affects the normal work of other monitoring systems based on WAMS information. At present...

Claims

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