The Study of the Frequency Adjustment Characteristics of Wind Power Uniting Thermal Power Outgoing System

doi:10.11930/j.issn.1004-9649.2014.3.6.7

Abstract

Abstract: Wind power uniting thermal power outgoing is an important characteristic of China's western wind power development. In this paper, taking a typical significance wind power uniting fire power simplified system as an example, the interaction between wind power and thermal power is analyzed profoundly. Taking into account speed droop, feed-forward coefficient and servomechanism constant, the primary frequency regulation of thermal power units is analyzed under wind power fluctuation. The power system frequency control strategy of thermal power dealt with mass wind turbine off-grid is proposed to enhance mechanical power emergently. By monitoring the amount of off-grid wind turbines and thermal power spinning reserve capacity, the mechanical power of thermal power units enhanced emergently is calculated. Thus the CCS of thermal units from normal AGC control is switched to emergency power control. The frequency fluctuations are reduced and the stability of the system frequency is improved. The response characteristics of different types of wind turbines are compared in consideration of interruption and short-circuit fault of export power grid. The theory of solid-speed wind turbine removed by over-speed protection because of its speed instability is analyzed deeply under short-circuit fault.

CLC Number:

TM614

WANG Qing, YANG Yue, MA Shi-ying, XU Yong-hai. The Study of the Frequency Adjustment Characteristics of Wind Power Uniting Thermal Power Outgoing System[J]. Electric Power, 2014, 47(3): 6-13.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.3.6.7

https://www.electricpower.com.cn/EN/Y2014/V47/I3/6

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