Modelling and Simulation of No-load Transformer during Power Plant Charging and Mitigation Strategy of Power Fluctuation Based on RTDS

doi:10.11930/j.issn.1004-9649.201707084

Abstract

Abstract: Normally, putting on-load transformer of nearby generators into operation will lead to power fluctuations of on-line generators. To restage the accident, the paper proposes a simulation model, which includes the UMEC model of transformer in RTDS environment, the equivalent model of external network, and the model of power generation system (including generator, excitation control and speed control). These three parts constitute the no-load transformer energizing simulation system, which can be used to restage the accident where no-load energizing induces low voltage of bus and power fluctuation of nearby generators. Moreover, a method of phase-splitting is proposed to mitigate low voltage of bus and power fluctuation of nearby generators. The correctness and effectiveness of the proposed method is demonstrated and validated via case study.

Key words: main transformer, no-load charging, RTDS, modelling and simulation, power fluctuation, phase-splitting

CLC Number:

TM407

XIA Xiaojun, MA Hongxing, GU Qiubin, TANG Shuo, LIN Jikeng, JIANG Wei. Modelling and Simulation of No-load Transformer during Power Plant Charging and Mitigation Strategy of Power Fluctuation Based on RTDS[J]. Electric Power, 2018, 51(9): 101-109.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201707084

https://www.electricpower.com.cn/EN/Y2018/V51/I9/101

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