CAJ | 학술논문

针对含分布式电源(distributed generation,DG)的配电网快速潮流分析和实时调度计算的工程需要,提出了一种基于回路分析的实用简化潮流计算方法.该方法以回路分析法作为潮流计算的理论基础,并利用配电网各节点电压的相角相差不大等特点对回路电压方程进行化简,使其直接转化为线性代数方程;又利用PV节点类型的简化回路电压方程组获得PV型DG的发电无功功率;最后只需通过一次公式代入计算即可得到电压分布结果.IEEE 33节点算例表明,实用简化潮流计算方法用于含 DG 的配电网潮流计算与牛顿法相比,计算时间显著缩短,计算精度和计算时间符合快速潮流分析和实时调度计算的工程要求.
침대함분포식전원(distributed generation,DG)적배전망쾌속조류분석화실시조도계산적공정수요,제출료일충기우회로분석적실용간화조류계산방법.해방법이회로분석법작위조류계산적이론기출,병이용배전망각절점전압적상각상차불대등특점대회로전압방정진행화간,사기직접전화위선성대수방정;우이용PV절점류형적간화회로전압방정조획득PV형DG적발전무공공솔;최후지수통과일차공식대입계산즉가득도전압분포결과.IEEE 33절점산례표명,실용간화조류계산방법용우함 DG 적배전망조류계산여우돈법상비,계산시간현저축단,계산정도화계산시간부합쾌속조류분석화실시조도계산적공정요구.
@@@@To meet the engineering demand of distribution network containing distributed generation (DG) for fast power flow analysis and real-time scheduling, a loop analysis-based practical simplified power flow calculation method is proposed. The loop analysis method is the theoretical basis for power flow calculation and in view of small differences among phase angles of nodal voltages in the distribution network the loop-voltage equations are simplified to make them turned into linear algebraic equations directly; utilizing the simplified loop-voltage equations of PV-type nodes, the reactive power generated of PV-type DG can be obtained;finally through only once of substitution calculation the voltage distribution can be attained. Calculation results of IEEE 33-bus system show that applying the proposed simplified algorithm to the power flow calculation of distribution network containing DG, the computing time is obviously shortened than that by Newton-Raphson method, and the accuracy and calculation speed can meet the engineering demand fast power flow analysis and real-time scheduling.