一种新型混合直接潮流控制器  

Hybrid direct power flow controller

作　　者：张友军[1] 马超 胡传雷 姚崇 冯奕欣 ZHANG Youjun;MA Chao;HU Chuanlei;YAO Chong;FENG Yixin(School of Mechanical&Electrical Engineering,Soochow University,Suzhou 215021,China)

机构地区：[1]苏州大学机电工程学院,江苏苏州215021

出　　处：《电机与控制学报》2025年第3期166-176,共11页Electric Machines and Control

基　　金：国家自然科学基金(51477107);中国博士后基金(2015M571805);江苏省博士后基金(1402107C);江苏省光谱成像与智能感知重点实验室2018年开放基金(3091801410402/8);中央高校基本科研业务费专项资金(30918014106)。

摘　　要：针对电网输电,提出一种新型混合直接潮流控制器(HDPC),该控制器由三相电压合成型360°直接潮流控制器(DPFC)和Sen变压器(ST)输出级联组成。通过将潮流控制器输出端的补偿电压串联接入原电网,能够独立调节电网节点电压的幅值和相位,从而控制电力传输系统中的有功和无功潮流。传统的统一潮流控制器(UPFC)价格昂贵,故障率高,运行维护成本高。虽然Sen变压器容量大、成本低,但其响应速度慢且调节方式是离散的点控制。故相较于UPFC和ST,HDPC输出补偿电压相位可在360°范围内调节,且具有不含直流储能元件、成本低、调节范围广、效率高、损耗小等优点。详细分析电路原理,给出一种幅值和相位的双闭环控制策略以及一种新型的ST选取最优离散点的控制方式,并研制原理样机,给出实验结果,验证理论分析的正确性和可行性。For power transmission in grid,a new hybrid direct power flow controller(HDPC)was proposed.Its structure is comprised of a three-phase voltage synthesis 360°direct power flow controller(DPFC)and a Sen transformer(ST),whose output are cascaded.By connecting its regulated output compensation voltage with grid in series.HDPC is able to regulate the amplitude and phase angle of the grid nodes voltage respectively,and then the active and reactive power flow in the power transmission system can be controlled.Traditional unified power flow controllers(UPFC)are expensive,with short life cycle and high operation and maintenance costs.Although Sen transformer has large capacity and low cost,its response is slow and the adjustment method is discrete point control.Therefore,compared with UPFC and ST,the output compensation voltage phase adjustment of HDPC can be adjusted within 360°,and it has the advantages of no DC energy storage element,low cost,wide regulation range,high efficiency and low loss.The circuit operational principle was analyzed in detail,and a double closed-loop control strategy of amplitude and phase and a novel ST to select the optimal discrete point were given.A principle prototype was developed,and the experimental results were given to verify correctness and feasibility of the theoretical analysis.

关 键 词：混合直接潮流控制器 三相电压合成型360°直接潮流控制器 Sen变压器 潮流控制 电压补偿 统一潮流控制器 

分 类 号：TM46[电气工程—电器]