Design and Application of State Estimation Research Mode

doi:10.11930/j.issn.1004-9649.201809119

Abstract

Abstract: Because of the complexity of actual operation conditions of power systems, non-convergence is hard to be avoided in state estimation and section results are difficult to be reproduced in inversion, and the adjustment of measurement and parameters will lead to the fluctuation of the eligibility rate and affect the stable operation of the real-time network analysis application system. Based on an analysis of the existing problems and application requirements in operation of state estimation, a research mode analysis platform for state estimation is designed and implemented. Firstly, all the information needed for state estimation is saved through section management and reading function; secondly, section reading, analysis and debugging calculation are realized through researching mode inversion; finally, the indicator reference is provided for parameters and measurement adjustment through comparison function. The results of state estimation are completely reproduced, and the analysis process is independent of the real-time state estimation and thus does not affect the real-time eligibility rate. The automation professionals can analyze the measurement and parameter problems purposefully according to the indicators provided by the comparison function. Through the actual application in North China Branch Center of SGCC, it is proved that the platform's functions can meet the needs of professionals for analysis and debugging of state estimation. The analysis basis is provided through index comparison. Through the actual use of North China Branch Center, it is proved that the platform function can meet the needs of professional personnel for analysis and debugging of state estimation.

Key words: dispatching and control system, state estimation, measurement error, diverge, research mode

PENG Long, NING Jian, WANG Yi, LU Juanjuan, ZHANG Yong, LUO Yuchun. Design and Application of State Estimation Research Mode[J]. Electric Power, 2020, 53(7): 169-175.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201809119

https://www.electricpower.com.cn/EN/Y2020/V53/I7/169

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