摘要
微网综合能源系统是提高能源利用率和可再生能源消纳能力的一种有效手段.针对传统微电网中电池储能系统成本高、灵活性差的问题,建立了基于电热氢能量转换方程的微网混合储能系统模型.在此之上,为解决微网源荷匹配度低与弃风严重问题,提出一种考虑电热多种负荷需求响应的园区微网综合能源系统优化模型.以系统综合运行成本最小为目标函数,综合考虑各单元约束,采用Matlab/Cplex对模型进行求解,通过算例对比分析,验证了采用电热氢混合储能的微网系统可有效降低系统运行成本,提高风电消纳能力;同时,考虑电热的综合需求响应提高了微网热电生产的灵活性,相较单一型需求响应可有效地减少弃风,提高能源利用效率,实现系统的经济运行.
Microgrid integrated energy system is an effective means to improve energy utilization and renewable energy consumption.Aiming at the problems of high cost and poor flexibility of battery energy storage system in traditional microgrid,a hybrid energy storage system model based on electrothermal hydrogen energy conversion equation was established.On this basis,in order to solve the problems of low source load matching and severe wind abandonment in microgrid,an optimization model of microgrid integrated energy system in the park is proposed,which takes into account the demand response of various electric heating loads.Taking the minimum comprehensive operation cost of the system as the objective function and considering the constraints of each unit,Matlab/Cplex is used to solve the model.Through comparative analysis of examples,it is verified that the microgrid system with hybrid electric thermal hydrogen energy storage can effectively reduce the system operation cost and improve the wind power consumption capacity;meanwhile,considering the comprehensive demand response of electric heating,the flexibility of microgrid thermal power production is improved,Compared with single demand response,it can effectively reduce wind abandonment,improve energy efficiency and realize economic operation of the system.
作者
王义军
陈美霖
牟雪峰
李妍妍
张哲
Wang Yijun;Chen Meilin;Mou Xuefeng;Li Yanyan;Zhang Zhe(Electrical Engineering College,Northeast Electric Power University,Jilin Jilin 132012;Jilin Machinery Industry School,Jilin Jilin 132013;Hangzhou Kaida Electric Power Construction Co.Ltd,Hangzhou Zhejiang 311100;Changchun Power Supply Company,State Grid Jilin Electric Power Co.Ltd,Changchun Jilin 130000)
出处
《东北电力大学学报》
2021年第2期108-118,共11页
Journal of Northeast Electric Power University
关键词
混合储能
风电消纳
微网
综合需求响应
Hybrid energy storage
Wind power accommodation
Microgrid
Comprehensive demand response
