计及输电通道容量约束的中长期发电计划  

Medium and Long Term Generation Scheduling Considering the Capacity Constraint of Transmission Channels

作　　者：张水平 付聪 左剑 王一鸣 郭瑞鹏[2] ZHANG Shuiping;FU Cong;ZUO Jian;WANG Yiming;GUO Ruipeng(Electric Power Dispatching Control Center of Guangdong Power Grid Co.Ltd.,Guangzhou 510030,China;College of Electrical Engineerng,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]广东电网有限责任公司电力调度控制中心,广州510030 [2]浙江大学电气工程学院,杭州310027

出　　处：《南方电网技术》2022年第12期60-67,共8页Southern Power System Technology

基　　金：国家自然科学基金资助项目(52077196);中国南方电网公司科技项目(GDKJXM20190037)。

摘　　要：调整机组出力是保证电网安全运行的常用手段之一,但在实际调度中其调节能力常受到多方因素的制约,可能出现调节困难的情况。讨论了输电通道容量约束导致的机组出力限制(即“窝电”)问题,将此类约束引入确定运行方式下的发电优化模型中,以关键输电通道传输效率最大化和机组出力调整量最小为目标获得相应的最优发电计划,并指出实际电网中可能存在的影响问题求解的特殊情况。针对中长期检修计划,扩展对所述发电优化模型的应用,获得相应的中长期发电调度方案。对某省级电网的实际算例验证了所述方法的有效性,有助于提升电网运行的安全性和经济性,并大幅减轻计算过程中的人力投入、消除人工干预环节可能出现的错误。Generation adjustment is one of the frequently used measures to guarantee the safety of the power grid,however,it may encounter difficulties during practical dispatching since the adjusting ability is restricted by various aspects.The issue of generator output limitations(i.e.power congestion)caused by the capacity constraints of transmission channels is discussed.Such constraints are fit into the generation scheduling optimization under certain power grid operation mode,with power transmission maximization of the critical channels and the minimization of generator output adjustments as the objectives.Then the optimization model is supplemented with the statement of the possible special cases which may lead to the failure of searching the limitations.Following with the introduction of medium and long term maintenance plan,the updated optimization model is created and solved to obtain the adapted generation dispatching solution.The example of a provincial power grid verifies the effectiveness of the proposed method,indicated that it can improve the security and economic benefit effectively,relieve the man-power during the calculation,and eliminate the potential faults in manual intervention.

关 键 词：输电通道 机组出力优化 窝电 发电计划 检修计划 

分 类 号：TM73[电气工程—电力系统及自动化]