摘要
将充裕控制问题按事件序列、相继事件、非预防性控制决策、预防性调度决策逐步解耦。基于防御代价及剩余风险之和最小的原则,从下到上逐层扩大优化范围,搜索代价性能比值最低的措施组合来满足运行充裕性,并迭代求取准优解。对各事件序列,按其概率与功率缺额之卷积值从大到小的顺序处理;同一个事件序列内的不同事件则按发生的顺序处理。若某级备用不够(或太多),则在较低级别(或较高级别)中按代价性能比从小到大(或从大到小)选择升级(或降级)对象,并指定其调度执行时刻。若充裕性事件发生时的瞬时备用不足,就需要实施紧急控制或校正控制来避免不受控的大停电。
An operation adequacy control task is decoupled stepwise in terms of event sequences,cascading events,non-preventive control, and preventive dispatch. Based on the minimum cost-performance-ratio principle, the searches are performed from the bottom up to provide suitable operation adequacy of the minimum defense costs and remaining risks. Iterations may be needed to obtain a global quasi-optimum result.The convolution value of power shortage with respect to the probability is used for ranking the different sequences;the optimization is conducted for each sequence in the descending order of the convolution value.Inside a sequence,the individual events are dealt with in the chronological order.If there is a lack of (or an excess of)reserve capacity within a certain grade,the objects for reserve capacity dispatch are selected for upgrading(or downgrading) from the lower (or the higher) grade,and the optimal executing time is also decided.In case of insufficient instantaneous reserve capacity, emergency control and/or corrective control will be compulsorily executed to avoid uncontrollable blackouts.
出处
《电力系统自动化》
EI
CSCD
北大核心
2014年第12期1-5,共5页
Automation of Electric Power Systems
基金
国家高技术研究发展计划(863计划)资助项目(2011AA05A105)
中英合作研究项目(513111025-2013,EP/L001063/1)
国家电网公司科技项目~~
关键词
充裕控制
供需协调
备用级别
备用优化
动态优化
风险管理
多道防线
adequacy control
coordination between supply and demand sides
reserve grades
reserve optimization
dynamic optimization
risk management
multiple-defense-lines
