大规模风电接入火电系统的最优旋转备用容量研究  

Study on the optimal spinning reserve in thermal power system with significant wind power penetration

作　　者：李智[1] 张新松[1] 郭晓丽[1] 

机构地区：[1]南通大学电气工程学院,江苏南通226019

出　　处：《电力系统保护与控制》2012年第13期110-114,120,共6页Power System Protection and Control

基　　金：南通市科技局应用研究项目(k2010068);南通市科技局重点实验室建设项目(DC2010002)

摘　　要：为研究大规模风电接入火电系统后的旋转备用(Spinning Reserve,SR)问题,对单时段机组组合(Unit Commitment,UC)模型进行了改进。目标函数由单纯的燃料费用最低改为燃料费用与停电损失之和最低,并设定系统因SR容量不足导致的切负荷和切风功率的均概率小于预先设定的置信度。利用蒙特卡洛模拟法(Monte Carlo Simulation,MCS)模拟导致系统有功缺额的各种随机因素,计算失负荷概率、停电损失和风功率切除概率。利用优先列表法(Priority List,PL)和基于最小边际成本法的经济调度(Economic Dispatch,ED)算法求解所提的模型。对算例系统进行了计算、分析,验证了模型和算法的有效性,并得出了一些有意义的结论。In order to obtain optimal spinning reserve （SR） of thermal system with significant wind power penetration, a signal period unit commitment （UC） model has been modified. In the modified UC model, objective function is changed from minimization of fuel cost to minimization of the sum of fuel cost and loss of load not supplied, and probability of cutting load and wind power is set to less than a predetermined confidence level. Monte Carlo simulation （MCS） is utilized to simulate all random factors which result in unbalance of active power and calculate the probability of loss of load, the outage cost and the wind power cutting probability. Priority list （PL） and economic dispatch （ED） algorithm based on minimum marginal cost are used to solve this modified UC model. Simulation on case system demonstrates the feasibility of proposed model and algorithm, and some meaningful conclusions are given.

关 键 词：风电 机组组合 停电损失 旋转备用 蒙特卡洛模拟 

分 类 号：TM614[电气工程—电力系统及自动化]