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Energies 2017, 10(11), 1797; doi:10.3390/en10111797

An Extended System Frequency Response Model Considering Wind Power Participation in Frequency Regulation

1
Jiangsu Provincial Key Laboratory of Smart Grid Technology & Equipment, Southeast University, Nanjing 210096, China
2
Technology Center of Central China Grid, Wuhan 430077, China
3
State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems, China Electric Power Research Institute, Beijing 100192, China
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Mussetta
Received: 22 September 2017 / Revised: 16 October 2017 / Accepted: 1 November 2017 / Published: 8 November 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Abstract

With increasing penetration of wind power into the power system, wind power participation in frequency regulation is regarded as a beneficial strategy to improve the dynamic frequency response characteristics of power systems. The traditional power system frequency response (SFR) model, which only includes synchronous generators, is no longer suitable for power systems with high penetrated wind power. An extended SFR model, based on the reduced-order model of wind turbine generator (WTG) and the traditional SFR model, is presented in this paper. In the extended SFR model, the reduced-order model of WTG with combined frequency control is deduced by employing small signal analysis theory. Afterwards, the stability analysis of a closed-loop control system for the extended SFR model is carried out. Time-domain simulations using a test system are performed to validate the effectiveness of the extended SFR model; this model can provide a simpler, clearer and faster way to analyze the dynamic frequency response characteristic for a high-wind integrated power systems. The impact of additional frequency control parameters and wind speed disturbances on the system dynamic frequency response characteristics are investigated. View Full-Text
Keywords: dynamic frequency response; combined frequency control; small signal analysis; reduced-order model; extended SFR dynamic frequency response; combined frequency control; small signal analysis; reduced-order model; extended SFR
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Tang, Y.; Dai, J.; Ning, J.; Dang, J.; Li, Y.; Tian, X. An Extended System Frequency Response Model Considering Wind Power Participation in Frequency Regulation. Energies 2017, 10, 1797.

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