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
20期
75-80
,共6页
分布式电源%微电网%电压控制%有功功率%分布式算法
分佈式電源%微電網%電壓控製%有功功率%分佈式算法
분포식전원%미전망%전압공제%유공공솔%분포식산법
distributed generators%microgrid%voltage control%active power%distributed algorithm
为了实现电压调节和提高供电能力，提出了一种在低压微电网中利用分布式电源(Distributed Generators，DGs)发出的有功来进行电压控制的分布式电压算法。针对低压微电网的线路阻抗特性，分析了电压和有功的关系。由系统线路结构建立通信链路，并对电压超出上下限的母线初始化，计算出所需补偿的有功功率。基于本地信息，利用参数化状态转移矩阵对电压进行修正，并考虑了分布式电源的有功容量限制。通过该算法协调和分配各分布式电源所需承担的功率，共同作用实现电压控制。仿真结果表明该算法能够有效实现电压调节和减小电压偏差，提高电压质量。
為瞭實現電壓調節和提高供電能力，提齣瞭一種在低壓微電網中利用分佈式電源(Distributed Generators，DGs)髮齣的有功來進行電壓控製的分佈式電壓算法。針對低壓微電網的線路阻抗特性，分析瞭電壓和有功的關繫。由繫統線路結構建立通信鏈路，併對電壓超齣上下限的母線初始化，計算齣所需補償的有功功率。基于本地信息，利用參數化狀態轉移矩陣對電壓進行脩正，併攷慮瞭分佈式電源的有功容量限製。通過該算法協調和分配各分佈式電源所需承擔的功率，共同作用實現電壓控製。倣真結果錶明該算法能夠有效實現電壓調節和減小電壓偏差，提高電壓質量。
위료실현전압조절화제고공전능력，제출료일충재저압미전망중이용분포식전원(Distributed Generators，DGs)발출적유공래진행전압공제적분포식전압산법。침대저압미전망적선로조항특성，분석료전압화유공적관계。유계통선로결구건립통신련로，병대전압초출상하한적모선초시화，계산출소수보상적유공공솔。기우본지신식，이용삼수화상태전이구진대전압진행수정，병고필료분포식전원적유공용량한제。통과해산법협조화분배각분포식전원소수승담적공솔，공동작용실현전압공제。방진결과표명해산법능구유효실현전압조절화감소전압편차，제고전압질량。
To achieve voltage control and improve the power supply capacity, a distributed algorithm for voltage control in the microgrid is proposed with active power injections provided by DGs. First, for the property of line impedance in the low voltage microgrid, the relationship between voltage and active power is analyzed. Then, a communication link is established according to the system structure, and the bus voltage that exceeds the upper and lower limit is initiated by computing the active power needed. Based on the local information, the bus voltage is corrected by a parametric state transition matrix with the consideration of active power capacity limits. Eventually, the active power of DGs is coordinated and distributed through the algorithm to achieve voltage control collectively. Simulation results show that the proposed algorithm can effectively achieve voltage control and decrease voltage deviation, so as to improve the voltage quality.
