摘要
风电功率不确定间歇波动给电力调度带来了困难。如何合理考虑风电备用风险,一体化制定经济发电与旋转备用计划,并使节能减排等指标满足期望水平,是亟待解决的问题。定义了一种以风电功率间歇波动引起系统备用紧张程度为指标的规范化风电备用风险,建立了一种同时计及风电功率间歇波动对系统上调和下调备用的风险影响、一体化制定经济发电与旋转备用计划、具有最优值与期望值混合形式的多目标优化调度模型。其中,电网公司购电总费用取最小值形式,系统发电总燃煤耗量、总污染物排放量、上调和下调备用风险取期望值形式。针对多目标混合优化调度模型,采用分解交替迭代求解策略:将原问题分解为经济发电和旋转备用2个混合优化子问题,并利用发电出力与旋转备用的特定关系交替迭代求解。算例验证了所提出方法的有效性。
The volatility of wind power has brought new problems for the power system optimal dispatch.How to formulate the generation schedule and spinning reserve schedule,considering the risk reserve due to wind power and demand of policy on energy-saving and emission-reduction,has become a problem to be solved.To evaluate the tension of the spinning reserve caused by the volatility of wind power,a normalized reserve risk is defined in a model of multi-objective hybrid optimal dispatch,which can both consider the reserve risk and formulate a generation schedule and spinning reserve schedule at the same time.In this model,the target of grid corporation＇s purchasing cost reaches the minimum value,and the targets of the energy consumption,emission of pollutants and the reserve risk reach the desired values.The model is solved by disintegrating the problem into two sub-problems,i.e.,an economic load optimal dispatching problem and a spinning reserve optimization problem.And an alternating iterative method is used according to the specific relationship between the two sub-problems.Examples validate the proposed model.
出处
《电力系统自动化》
EI
CSCD
北大核心
2011年第22期118-124,共7页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50877014)
高等学校博士学科点专项科研基金资助项目(20102302110021)
国家高技术研究发展计划(863计划)资助项目(2011AA05A105)~~
关键词
调度
多目标混合优化
风电
风险
节能减排
备用
dispatch
multi-objective hybrid optimization
wind power
risk
energy-saving and emission-reduction
reserve
