基于宽负荷调峰技术的电网频率弹性提升方法研究  

Study on Frequency Resiliency Enhancement Method of Power Grid Based on Wide Load Regulation Technology

作　　者：李云鹏[1] 杨秦敏[1] 张志祥 徐石 LI Yunpeng;YANG Qinmin;ZHANG Zhixiang;XU Shi(College of Control Science and Engineering,Zhejiang University,Hangzhou 310027,China;State Grid Hangzhou Power Supply Company,Hangzhou 311300,China;Hangzhou Power Equipment Manufacturing Company,Hangzhou 311300,China)

机构地区：[1]浙江大学控制科学与工程学院,杭州310027 [2]国网浙江省电力有限公司杭州供电有限公司,杭州311300 [3]杭州电力设备制造有限公司,杭州311300

出　　处：《浙江电力》2020年第12期5-11,共7页Zhejiang Electric Power

基　　金：国家自然科学基金项目(61673347,U1609214,61751205);浙江省重点研发计划项目(2019C01050)。

摘　　要：伴随着风能、潮汐能、太阳能、地热能等可再生能源发电技术的显著提升,可再生能源发电在电网中的渗透比例逐步提高。然而,由于可再生能源固有的随机特性和间歇特性在加剧电网频率波动的同时增加了电网的脆弱性,因此其大规模并网受到限制。为改善电网频率弹性,针对超超临界燃煤机组协同控制系统提出了一种预设收敛时间的自适应控制算法,实现了机组宽负荷快速调峰。仿真对比结果验证了机组输出功率在有干扰的情况下能够快速响应调峰指令,电网频率弹性得到有效提升。With the enhancement of generation technologies of renewables such as wind energy,tidal energy,solar energy and geothermal energy,the penetration ratio of renewable energy power generation in the power grid is increasing.However,the large-scale integration of renewables not only increases grid frequency fluctuation but makes the grid more vulnerable,constraining its large-scale grid integration.To improve the frequency resiliency of the power grid,an adaptive control algorithm with preset convergence time is proposed for the cooperative control system of the ultra-supercritical coal-fired unit to achieve fast wide load regulation of units.The simulation and comparison results show that the output power of the unit can respond to the peak regulation command quickly under interference,and the frequency resiliency of the power grid can be improved effectively.

关 键 词：电网频率弹性提升 超超临界燃煤机组 快速宽负荷调峰 自适应控制 

分 类 号：TM712[电气工程—电力系统及自动化]