【作者】 李慧聪；

【导师】 王成山；

【作者基本信息】 天津大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 互联电力系统区域间的输电能力是电力系统安全性与可靠性的重要测度，输电能力的大小直接反映了互联电网的联结强度与结构优劣。电压稳定是约束电力系统最大输电能力的重要因素之一，为了充分利用现有的输配电系统，提高系统稳定裕度，计算输电能力的算法应该尽可能地模拟系统的运行情况以求得最大的系统输电能力。连续性潮流方法（简称CPFflow法）和原－对偶内点法（简称PDIP法）是两种有效的计算电力系统输电能力的方法。本文在分析这两种方法计算系统输电能力各自的优缺点的基础上, 将二者结合，提出了一种系统输电能力的综合计算方法。用原－对偶内点法优化得到的发电机出力值为连续性潮流法提供最优的发电机出力方向，即获得以输电能力最大为目标的发电机调度方式，并用连续性潮流追踪系统从初始运行点到电压崩溃点的过程中各离散事件的变化过程，控制其向最优值靠近，从而使系统得到更大的输电能力。本文对IEEE14，30，118系统做了测试，取得了令人满意的效果，测试结果表明该算法既能得到更大的输电能力，又能模拟实际系统运行，是对常规连续性潮流方法的完善。更多还原

【Abstract】 Power transfer capability provides valuable measurement to the security andreliability of interconnected power systems. The magnitude of available transfercapability reflects the interconnection intensity and structural quality of a powertransmission network. Voltage stability is an important factor restricting themaximum transfer capability. To take full use of the existing transmission anddistribution systems, enhance the stability margin, the algorithm calculating transfercapability should simulate the actual operating process of a power system as soon aspossible so as to obtain the maximum transfer capability. This paper analyzed the advantages and disadvantages of the primal-dualinterior point method and the continuation power flow method used for thecomputation of power system transfer capability respectively, then proposed anintegrative computation method. It uses the primal-dual interior point method to getthe optimal generation dispatching direction, then uses the continuation power flowmethod to trace the changing course of every discrete events, controls them to closeto the optimal values, so that more transfer capability is achieved. The results of IEEE-14,30,118 buses system test cases are provided. It is shownthat the proposed algorithm can not only attain larger power transfer capability, butalso simulate the actual operating process of a power system. It is an effectiveimprovement of the general continuation power flow algorithm.更多还原