针对结合高渗透性可再生能源配电网的实时模糊电压控制
Real-Time Fuzzy Voltage Regulation for Distribution Networks Incorporating High Penetration of Renewable Sources针对结合高渗透性可再生能源配电网的实时模糊电压控制
This paper proposes a coordinated voltage regulation scheme for on-load tap changer (OLTC) and renewable distributed generation (DG) units to provide a proper voltage regulation for active distribution systems. The main motivation of applying fuzzy logic is that it can deal with environments of imperfect information, and thus, it can reduce communication requirements. The proposed regulation scheme consists of three fuzzy-based control algorithms. The first control algorithm is proposed for the OLTC such that it can mitigate the effect of DG units on the voltage profile. The second control algorithm is proposed to provide a DG reactive power sharing, in order to relax the OLTC tap operation. The third control algorithm aims to partially curtail DG active powers to restore a feasible solution from the OLTC prospective. The proposed fuzzy algorithms have the advantage of providing proper voltage regulation with relaxed tap operation, utilizing only the estimated system minimum and maximum voltages. Moreover, it avoids numerical instability and convergence problems associated with centralized approaches, as it does not require to run an optimization algorithm. Real-time simulations are developed to show the effectiveness of the proposed fuzzy algorithms on a typical distribution network, using OPAL-RT real-time simulator.
这篇论文提出了一种针对有载分接开关（on-load tap changer：OLTC）和可再生能源分布式发电（distributed generation：DG）的协调电压调节方案，以便为主动配电系统提供合适的电压。使用模糊逻辑的主要动机是它可以在信息不完整的情况下工作，从而减少通讯需要。文中设想的调节方案包括三个模糊控制算法。第一种算法针对OLTC，它可以缓解分布式发电组队电压分布的影响。第二个控制算法可提供一种分布发电无功功率分享，以减轻OLTC的分接操作。第三种控制算法目的是部分缩减DG无功功率，从OLTC角度回复可行解决方案。文中提出的模糊算法的优势在于，它只利用估计系统的最小和最大电压即可以及少的分接操作提供合适的电压调节。而且，它避免了数字不稳定性和集中化方法带来的收敛现象。利用OPAL-RT实时仿真器进行的实时仿真测试证明了文中提出的用于典型配电网的模糊算法的有效性。
文章地址：
http://opal-rt.com/technical-document/real-time-fuzzy-voltage-regulation-distribution-networks-incorporating-high-penet
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