Optimal reactive power management is one of the key operational aspects for efficient planning of distribution system. This study has become more challenging with renewable energy sources integration into the system. Objective of this paper is to address optimal reactive power planning in distribution system using hybrid optimization. This paper presents a comprehensive model for solving capacitor allocation, PV penetration and feeder reconfiguration simultaneously. The objective function considered in this paper includes cost of capacitor, PV and energy loss. The proposed work includes: (i) capacitor allocation using ant lion optimization, (ii) capacitor rating determination using general algebraic modeling system, (iii) reconfiguration of distribution system using genetic algorithm, (iv) investigated different case studies to realize the impact of various load models and load growth factors on reactive power compensation and network reconfiguration, (v) real-time procedure to determine rating of capacitor banks for practical distribution systems, (vi) reactive power dispatch for realistic time-varying load model considering coordination among capacitors, on-load tap changer and photo-voltaic (PV) penetration. The analysis is carried out considering uncertainty of load demand and PV power generation. The proposed methodology is implemented on IEEE 33-bus distribution system and real-time existing Indian distribution network to demonstrate effectiveness of the proposed methodology. It is observed that voltage-dependent load models have a significant impact on system performance and rating of capacitor banks. The proposed strategy ensures optimal solution compared to other existing techniques.

中文翻译：

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在 PV 渗透的情况下，具有电容器和 OLTC 的重新配置配电系统的电压调节和损耗最小化

优化无功功率管理是配电系统高效规划的关键操作方面之一。随着可再生能源整合到系统中，这项研究变得更具挑战性。本文的目的是使用混合优化来解决配电系统中的最佳无功功率规划问题。本文提出了一个综合模型，用于同时解决电容器分配、光伏渗透和馈线重构问题。本文考虑的目标函数包括电容器成本、PV 和能量损耗。拟议的工作包括：（i）使用蚂蚁狮子优化的电容器分配，（ii）使用通用代数建模系统确定电容器额定值，（iii）使用遗传算法重新配置配电系统，(iv) 调查不同的案例研究，以了解各种负载模型和负载增长因素对无功补偿和网络重构的影响，(v) 确定实际配电系统电容器组额定值的实时程序，(vi) 无功功率考虑电容器、有载分接开关和光伏 (PV) 渗透之间协调的现实时变负载模型调度。分析考虑了负荷​​需求和光伏发电的不确定性。所提出的方法在 IEEE 33 总线配电系统和实时现有的印度配电网络上实施，以证明所提出方法的有效性。据观察，电压相关负载模型对电容器组的系统性能和额定值有重大影响。