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首页> 外文期刊>Generation, Transmission & Distribution, IET >Optimal reactive power dispatch: a review, and a new stochastic voltage stability constrained multi-objective model at the presence of uncertain wind power generation
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Optimal reactive power dispatch: a review, and a new stochastic voltage stability constrained multi-objective model at the presence of uncertain wind power generation

机译：最优无功功率分配：存在不确定性风力发电时的回顾和新的随机电压稳定约束多目标模型

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摘要

In this paper, a comprehensive review of recent researches carried out in the area of optimal reactive power dispatch (ORPD) is presented. The literature review consists of a classification of ORPD problem, along with a survey on the strengths and weaknesses of different models proposed previously. Also, a stochastic multi-objective ORPD (SMO-ORPD) model is studied under load and wind power generation uncertainties. A two-stage stochastic model is employed for dealing with the uncertainties. The considered objective functions are real power losses (PLs) and operation & maintenance (O&M) cost of wind farms (WFs). The proposed SMO-ORPD problem is solved by considering voltage stability index (i.e. Lmax index). Besides, ε-constraint technique and fuzzy satisfying approach are employed to pick up the best compromise solution. Two cases are considered as follows: (i) voltage stability relaxed SMO-ORPD, and (ii) voltage stability constrained (VSC) SMO-ORPD. In this study, reactive power compensation devices are modelled as discrete control variables. Hence, the proposed SMO-ORPD problem is modelled as a mixed-integer non-linear programming optimisation problem. The SMO-ORPD problem is implemented in GAMS environment, and it is examined on the IEEE 30 and 118-bus test systems. The numerical results substantiate that in the case of VSC-SMO-ORPD, active PLs are higher than the other case, whereas O&M cost of WFs is not different considerably.
机译：本文对在无功优化分配（ORPD）领域进行的最新研究进行了全面综述。文献综述包括ORPD问题的分类，以及对先前提出的不同模型的优缺点的调查。此外，研究了负荷和风力发电不确定性情况下的随机多目标ORPD（SMO-ORPD）模型。采用两阶段随机模型来处理不确定性。考虑的目标函数是风电场的实际功率损耗（PLs）和运行与维护（O＆M）成本（WFs）。建议的SMO-ORPD问题是通过考虑电压稳定性指标（即Lmax指标）解决的。此外，采用ε约束技术和模糊满意方法来获得最佳折衷方案。考虑以下两种情况：（i）电压稳定性松弛的SMO-ORPD，和（ii）电压稳定性受约束的（VSC）SMO-ORPD。在这项研究中，无功补偿装置被建模为离散控制变量。因此，将提出的SMO-ORPD问题建模为混合整数非线性规划优化问题。 SMO-ORPD问题在GAMS环境中实现，并在IEEE 30和118总线测试系统上进行了检查。数值结果证实，在VSC-SMO-ORPD情况下，活动PL高于其他情况，而WF的O＆M成本相差不大。

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