Primary Frequency Control Contribution From Smart Loads Using Reactive Compensation
Primary Frequency Control Contribution From Smart Loads Using Reactive Compensation
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DOI：
10.1109/tsg.2015.2402637
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发表时间：
2015-02
影响因子：
9.6
通讯作者：
Zohaib Akhtar;B. Chaudhuri;R. Hui
中科院分区：
文献类型：
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作者：
Zohaib Akhtar;B. Chaudhuri;R. Hui
频率相关负载固有地影响主频率响应。本文描述了基于电压相关的非关键（NC）负载对初级频率控制的额外贡献，这些负载可以承受电源电压的广泛变化。通过使用一系列无功补偿器将NC负载与市电解耦，形成智能负载（SL），可以控制电压，从而控制NC负载的有功功率，以调节市电频率。本文的范围主要集中在无功补偿器，只有注入电压的大小可以控制，同时保持电流和电压之间的正交关系。提出了新的控制准则。在IEEE 37总线测试配电网的案例研究中，证明了SLs在不考虑频率相关负载的情况下改善市电频率调节的有效性，并且市电电压容限几乎没有放松。灵敏度分析显示了SLs在不同负载功率因数、SLs比例和系统强度下的有效性和局限性。
Frequency-dependent loads inherently contribute to primary frequency response. This paper describes additional contribution to primary frequency control based on voltage-dependent noncritical (NC) loads that can tolerate a wide variation of supply voltage. By using a series of reactive compensators to decouple the NC load from the mains to form a smart load (SL), the voltage, and hence the active power of the NC load, can be controlled to regulate the mains frequency. The scope of this paper focuses primarily on reactive compensators for which only the magnitude of the injected voltage could be controlled while maintaining the quadrature relationship between the current and voltage. New control guidelines are suggested. The effectiveness of the SLs in improving mains frequency regulation without considering frequency-dependent loads and with little relaxation in mains voltage tolerance is demonstrated in a case study on the IEEE 37 bus test distribution network. Sensitivity analysis is included to show the effectiveness and limitations of SLs for varying load power factors, proportion of SLs, and system strengths.