Fading-Kalman-filter-based on-line voltage stability monitoring method
A Kalman filter, voltage stabilization technology, applied in the direction of AC network voltage adjustment, circuit devices, AC network circuits, etc., can solve the problems of erroneous monitoring results, drift, etc., to improve practicability, avoid load blackouts and economic losses.
Inactive Publication Date: 2018-05-29
XIANGTAN UNIV
1 Cites 2 Cited by
AI-Extracted Technical Summary
Problems solved by technology
View more
Abstract
The invention discloses a fading-Kalman-filter-based on-line voltage stability monitoring method. The method comprises: a parameter of a simplified Thevenin equivalent model of a power system is identified by using local information of a power grid; with consideration of a measurement error and a noise of real-time data, parameter calculation results of adjacent two times as input data of on-lineequivalent model parameters are processed and parameters of an uncertain model are estimated by using a fading Kalman filter algorithm; and with the parameters of the uncertain model, an impedance modulus margin index is calculated, accurate and stable on-line margin monitoring is carried out on the system by monitoring a stability index of a local voltage in real time, and the monitored margin value is compared with a safety margin threshold to determine a weak point and a safety and stability level of the system. According to the method provided by the invention, the method has the high capability for suppressing the local measurement information error and noises and has the excellent robust and tracking performances; the interference on the filtering by the accumulated error is reduced;accurate on-line voltage stable level monitoring is realized; and the support is provided for the safe operation of the power system.
Application Domain
Ac network voltage adjustment
Technology Topic
Power gridVoltage +14
Image
Examples
- Effect test(1)
Test Example
PUM


Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
Similar technology patents
Environmentally-friendly textile machine with functions of shock absorption and cotton flock absorption
Owner:长兴宝诺纺织科技有限公司
Processing method and equipment of electronic health service
Owner:CHINA MOBILE COMM GRP CO LTD
Video information indication method and set-top box
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Preparation method of composite metal alloy coating layer and spraying equipment
Owner:深圳市金中瑞通讯技术有限公司
Classification and recommendation of technical efficacy words
- Improve practicality
Device and method for constructing self-adaptive graphic user interface (GUI)
ActiveCN102193786ASolve control intersection and information truncation problemsImprove practicality
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Adaptive air conditioner on basis of wearable equipment
Owner:SHANGHAI NORMAL UNIVERSITY
Photographing method and terminal
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD