采用广域反馈信号的电力系统稳定器投运条件

发布时间：2018-08-06 08:13

【摘要】：电力系统低频振荡阻尼控制是目前广域闭环控制的研究热点,其中采用广域反馈信号的电力系统稳定器(PSS)是主要控制方式之一。广域PSS的投运条件是运行人员主要关注的问题之一,但目前鲜有相关研究。文中以实际工程应用为背景,提出了广域PSS的"退出""投入"和"激活"3种运行状态及相互转换关系;同时提出了广域PSS的3个激活条件,包括本地功率、爬坡和频率条件,分别对应本地控制机组出力改变、非本地机组出力改变和非低频振荡频率的系统振荡3种特殊系统运行状态,以针对这些特殊状态确定广域PSS是否投运。随后的RTDS硬件在环测试结果表明,激活条件与运行状态切换相结合的广域PSS投运条件可有效保证其不起坏作用。广域PSS投运条件的研究及测试结果将为今后采用广域反馈信号的PSS在实际工程中的应用提供参考价值。
[Abstract]:Low frequency damping control of power system is a hot topic in the field of wide area closed-loop control. Power system stabilizer (PSS) with wide area feedback signal is one of the main control methods. The operation condition of wide area PSS is one of the main problems that operators pay attention to, but there are few related researches at present. On the background of practical engineering application, this paper puts forward three kinds of "exit", "input" and "activation" of wide-area PSS and their interconversion relations, at the same time, three activation conditions of wide-area PSS, including local power, slope climbing and frequency, are put forward. In order to determine whether wide area PSS can be put into operation or not, three special operating states of local control unit, non-local unit output force change and system oscillation with non-low frequency oscillation frequency are respectively corresponding to these special conditions. The test results of RTDS hardware in the loop show that the wide-area PSS operation condition which combines the activation condition with the operation state switching can effectively ensure that it does not play a bad role. The research and test results of wide area PSS operation conditions will provide reference value for the application of PSS with wide area feedback signal in practical engineering in the future.
【作者单位】：电力系统及发电设备控制和仿真国家重点实验室清华大学;武汉大学电气工程学院;贵州电网公司电力调度控制中心;中国高速传动设备集团有限公司;
【分类号】：TM712

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