CAJ | 학술논문

在大电网平台下,利用各个省级电网负荷互补特性、以及常规水电、抽水蓄能、火电等电源调节性能的差异,协调多个电网间的电力分配,对于缓解中国电网普遍存在的调峰压力尤为重要.以华东电网网省两级调度平台为依托,提出网省两级调度多电源联合调峰方法.该方法根据电源类型将原问题分解为抽蓄、常规水电、火电、核电等4个独立子问题,并对应提出抽蓄启发式搜索算法、水电混合降维算法、火电切负荷调峰算法进行子问题求解;在此基础上,以系统负荷为关联因子,耦合前述算法和提出的网间电力分配二次规划方法建立多个子问题的协调求解框架,实现多种电源多个电网协调运行.实际应用结果表明,所提方法能够有效协调多个省级电网峰值负荷需求,比实际调度更好地发挥了华东网调电源的调峰作用.
재대전망평태하,이용각개성급전망부하호보특성、이급상규수전、추수축능、화전등전원조절성능적차이,협조다개전망간적전력분배,대우완해중국전망보편존재적조봉압력우위중요.이화동전망망성량급조도평태위의탁,제출망성량급조도다전원연합조봉방법.해방법근거전원류형장원문제분해위추축、상규수전、화전、핵전등4개독립자문제,병대응제출추축계발식수색산법、수전혼합강유산법、화전절부하조봉산법진행자문제구해;재차기출상,이계통부하위관련인자,우합전술산법화제출적망간전력분배이차규화방법건립다개자문제적협조구해광가,실현다충전원다개전망협조운행.실제응용결과표명,소제방법능구유효협조다개성급전망봉치부하수구,비실제조도경호지발휘료화동망조전원적조봉작용.
Coordination is essential for alleviating the common peaking pressure of most of China's power grids by fully using load differences among multiple provincial power grids, and regulation capability differences among conventional hydropower plants, pumped-storage plants and thermal power plants. The East China Grid (ECG), one of China's regional power grids, was taken as the example. A coordination method was developed to solve short-term peak shaving operation problems of hybrid energy sources between regional and provincial power grids. The method decomposes the original problem into four independent subproblems according to the energy source types. A heuristic search algorithm, a successive search algorithm, and improved load shedding algorithm were proposed to respectively solve the pumped-storage subproblem, conventional hydropower subproblem, and thermal subproblem. Moreover, a solution framework incorporated these algorithms, where the quadratic programming algorithm is repeatedly used to allocate electric power among provincial grids after obtaining the generation schedule of each plant. The proposed method was applied to the dispatching center of ECG for scheduling its own plants. The results show that the method can effectively coordinate different peak load demands among provincial power grids and produces better generation schedules than the actual operation.