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首页> 外文期刊>International Journal of Electrical Power & Energy Systems >An improved load flow technique based on load current injection for modern distribution system
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An improved load flow technique based on load current injection for modern distribution system

机译：现代潮流配电网中基于潮流注入的改进潮流技术

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This paper presents load current injection based improved load flow (LF) technique for modern distribution system. The proposed LF technique is derived by promulgating the concept of conventional backward forward sweep technique. This proposed technique uses a single load current to bus voltage (LCBV) matrix to perform both the backward and the forward sweeps of power flow calculation in a single step: Utilizing the concept LCBV, the bus voltages can be determined, directly, from the load current injections. Due to the distinctive solution technique of the proposed approach, the time-consuming lower-upper factorization and forward-backward substitution or any derivative operation required in the traditional LF technique are no longer necessary. These unique features make the proposed technique faster in operation. The proposed approach is flexible enough to accommodate any sort of change in network structure due to reconfiguration. Along with the modeling of various equipments of distribution system (viz. distribution transformer, voltage regulator, voltage dependent loads, distributed generations, etc.), special treatments for weakly meshed system are also presented in this work. It is experimented on several test systems of varying complexities (viz. 28-, 69- and 30-bus balanced radial distribution system (RDS), 10-bus and IEEE 34-bus unbalanced RDS and 33- and 69-bus weakly meshed system). and the obtained results demonstrate the effectiveness of the proposed approach while comparing to the existing methodologies. Furthermore, it is revealed that the proposed algorithm is, computationally, faster, robust and more suitable for modern distribution network than the contemporary techniques available in the state-of-the-art literature. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文提出了基于负载电流注入的现代配电系统改进的潮流（LF）技术。所提出的低频技术是通过传播传统的后向前向扫描技术的概念而得出的。这项提议的技术使用单个负载电流到总线电压（LCBV）矩阵在一个步骤中执行潮流计算的反向和正向扫描：利用概念LCBV，可以直接从负载中确定总线电压当前注射。由于所提出方法的独特解决方案技术，不再需要费时的上下分解和前向后替换或传统LF技术所需的任何派生运算。这些独特的功能使所提出的技术可以更快地运行。所提出的方法足够灵活，以适应由于重新配置而引起的网络结构的任何变化。除了对配电系统的各种设备（即配电变压器，调压器，与电压有关的负荷，分布式发电等）进行建模外，还对弱网格系统进行了特殊处理。它在各种复杂程度不同的测试系统上进行了试验（即28总线，69总线和30总线平衡径向分配系统（RDS），10总线和IEEE 34总线不平衡RDS以及33总线和69总线弱网格系统）。与现有方法相比，所获得的结果证明了该方法的有效性。此外，揭示了与现有技术文献中可用的现代技术相比，所提出的算法在计算上更快，更健壮并且更适合于现代配电网络。 （C）2016 Elsevier Ltd.保留所有权利。

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