摘要
我国"三北"地区存在源荷供需矛盾凸出、电网灵活性差的问题。风电场弃风现象严重问题的一个重要原因是热电机组在冬季以"以热定电"的方式运行,导致其调峰能力下降。利用蓄热式电锅炉供热,将电能转化为热能,能够提高风电就地消纳的能力。但采用电极加热的蓄热式电锅炉,其功率调节受电极机械部件限制,频繁调节将严重影响蓄热式电锅炉的使用寿命。将具有快速、灵活功率调节能力的电化学储能引入蓄热式电锅炉消纳风电的系统中,以风电消纳最大和蓄热式电锅炉电极调节次数最小为目标,提出了一种基于储能融合蓄热式电锅炉的风电消纳多目标优化控制方法。仿真结果表明:所提方法能够兼顾蓄热式电锅炉系统的弃风消纳与锅炉电极的调节次数,有效地解决了蓄热式电锅炉功率调节能力与风功率变化不匹配的问题。
There are problems that the contradiction between source supply and load demand is prominent and the flexibility of power grid is poor in ＂three-north area＂ of China. And the wind power curtailment of wind farms is serious, one of the important causes is that the thermoelectric units operate in the mode of ＂determining power generation by heat＂ in winter, resulting in the reduction of their peak load regulation capacity. Applying regenerative electric boilers for heating and transferring the electric energy into heat energy can improve the local accommodation ability of wind power. However, the power regulation of electrode heating-based regenerative electric boiler is limited by its mecha-nical components and the frequent adjustment of electrode will seriously affect the service life of rege- nerative electric boilers. A multi-objective optimization control method of wind power consumption based on regene- rative electric boi-ler system integrated with large-scale energy storage is proposed with the maximum wind power consumption and the minimum regulating times of electrode as its objectives, by introducing the electrochemical energy storage with fast and flexible power adjustment ability into the regenerative electric boiler system to consume wind power. Simulative results show that the proposed method can take both the wind power consumption of regenerative electric boiler system and the regulating times of electrode into account, solving the mismatching problem between the power regulation capacity of regenerative electric boiler and the variation of wind power effectively.
作者
李国庆
庄冠群
田春光
王鹤
LI Guoqing;ZHUANG Guanqun;TIAN Chunguang;WANG He(School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China;Electric Power Research Institute,State Grid Jilin Electric Power Co.,Ltd.,Changchun 130021,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2018年第10期46-52,59,共8页
Electric Power Automation Equipment
基金
国家电网公司科技发展计划项目(KY-SG-2016-204-JLDKY)
吉林省优秀青年人才基金项目(20170520100JH)~~
关键词
风电消纳
大规模储能
蓄热式电锅炉
优化控制
多目标优化
调节次数
模型
wind power consumption
large-scale energy storage
regenerative electric boiler
optimization control
multi-objective optimization
regulating times
models
