电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
15期
21-26
,共6页
分布式电源%无功优化%区间潮流%粒子群算法
分佈式電源%無功優化%區間潮流%粒子群算法
분포식전원%무공우화%구간조류%입자군산법
distributed power%reactive power optimization%interval power flow%PSO
为了解决分布式电源出力不确定性以及负荷波动性所带来的影响，提出一种基于区间数的含分布式电源电网无功优化方法。介绍区间数和区间算术的概念并建立区间潮流模型；建立含分布式电源电网区间无功优化模型的目标函数和约束条件，并给出采用粒子群算法求解区间无功优化模型的步骤；最后通过Matlab对一个修改后的IEEE14节点系统进行区间无功优化仿真计算，并采用粒子群算法对单一潮流断面进行无功优化验证了所提算法的正确性。仿真结果表明，基于区间算术的无功优化方法能够在计及电网不确定性因素情况下，使得电网趋优运行。
為瞭解決分佈式電源齣力不確定性以及負荷波動性所帶來的影響，提齣一種基于區間數的含分佈式電源電網無功優化方法。介紹區間數和區間算術的概唸併建立區間潮流模型；建立含分佈式電源電網區間無功優化模型的目標函數和約束條件，併給齣採用粒子群算法求解區間無功優化模型的步驟；最後通過Matlab對一箇脩改後的IEEE14節點繫統進行區間無功優化倣真計算，併採用粒子群算法對單一潮流斷麵進行無功優化驗證瞭所提算法的正確性。倣真結果錶明，基于區間算術的無功優化方法能夠在計及電網不確定性因素情況下，使得電網趨優運行。
위료해결분포식전원출력불학정성이급부하파동성소대래적영향，제출일충기우구간수적함분포식전원전망무공우화방법。개소구간수화구간산술적개념병건립구간조류모형；건립함분포식전원전망구간무공우화모형적목표함수화약속조건，병급출채용입자군산법구해구간무공우화모형적보취；최후통과Matlab대일개수개후적IEEE14절점계통진행구간무공우화방진계산，병채용입자군산법대단일조류단면진행무공우화험증료소제산법적정학성。방진결과표명，기우구간산술적무공우화방법능구재계급전망불학정성인소정황하，사득전망추우운행。
In order to solve the uncertainty of the output of distributed power and the effects of load fluctuation, this paper presents a reactive power optimization method based on interval for the grid with distributed power. First, the concepts of interval number and interval arithmetic are introduced and the interval power flow is established. Then, objective function and constraint conditions of interval reactive power optimization model with distributed power are established, and the steps of solving the model with PSO are given. Finally, a modified IEEE 14 node system is simulated through Matlab and a certain power flow for reactive power optimization proves the correctness of the proposed algorithm. Simulation results shows that it can make the grid work in near-optimal state with taking into account the uncertainty of the grid.
