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第 45 卷 第 2 期
                                                         电力与能源
                  164                                                                          2024 年 4 月

                                                                                       DOI:10.11973/dlyny202402005
                  电网技术


                    柔性直流配电网暂态电压稳定性控制方法研究




                                                          赵     凯
                                                (大港油田绿电公司,天津 300280)


                    摘   要:由于引起柔性直流配电网暂态电压波动的因素较为复杂,导致对其进行控制时难以达到对电压波动
                    的快速收敛,为此,提出了一种柔性直流配电网暂态电压稳定性控制方法。在考虑电压源换流器、直流母线、
                    分布式电源以及负荷特点的基础上,构建了柔性直流配电网模型,并结合发电机—母线轨迹灵敏度反映发电
                    机出力变化对母线电压波动的影响程度,引入了发电机—母线轨迹灵敏度参数。在具体的控制阶段,结合不
                    同线路对应的发电机-母线轨迹灵敏度情况,对换流器的触发角和导通角进行调节,并利用并联电容器组对柔
                    性直流配电网进行无功补偿,实现暂态电压稳定性控制。在测试结果中,不论是在稳定的电网工作状态还是
                    在电压突变暂态事件状态下,所提出的控制方法均能够实现配电网整体输出电压波动的快速收敛,在短时间
                    内保证电压维持在稳定状态,说明其能够有效保障配电网的稳定运行。
                    关键词:柔性直流配电网;暂态电压;稳定性控制;无功补偿
                    作者简介:赵      凯(1985—),男,工程师,主要研究方向为电力技术。
                    中图分类号:TM89    文献标志码:A    文章编号:2095-1256(2024)02-0164-05
                    Transient Voltage Stability Control Method for Flexible DC Distribution Network



                                                         ZHAO Kai
                                     (Dagang Oilfield Green Power Company,Tianjin 300280,China)



                    Abstract:Due to the complexity of factors causing transient voltage fluctuations in flexible DC distribution net⁃
                    works,it is difficult to achieve rapid convergence of voltage fluctuations when controlling them. Therefore,a tran⁃


                    sient voltage stability control method for flexible DC distribution networks is proposed. Based on the characteris⁃



                    tics of voltage source converter,DC bus,distributed power supply and load,a flexible DC distribution network

                    model is constructed,and the alternator-bus track sensitivity is introduced to reflect the influence of generator out⁃

                    put variation on bus voltage fluctuation. In the specific control stage,the trigger angle and on-angle of the con⁃
                    verter are adjusted according to the alternator-bus track sensitivity corresponding to different lines,and the shunt

                    capacitor bank is used to compensate the reactive power of the flexible DC distribution network to realize the tran⁃
                    sient voltage stability control. In the test results,the control method presented can realize the rapid convergence of

                    the overall output voltage fluctuation of the distribution network,and ensure that the voltage is maintained in a

                    stable state in a short period of time,regardless of the stable working state of the power network or the state of

                    voltage abrupt transient events,indicating that it can effectively guarantee the stable operation of the distribution

                    network.

                    Key words:flexible DC distribution network,transient voltage,stability control,reactive power compensation



                    随着可再生能源和分布式电源的快速发展,                          配电网的暂态电压稳定性控制方法具有重要意
                柔性直流配电网作为一种新型电力系统架构逐渐                            义。该研究可以帮助优化柔性直流配电网的电压
                引起了关注。由于其多变的特性和复杂的运行条                            响应性能,提高电网的可靠性和稳定性,进而推动
                件,暂态电压稳定性成为影响柔性直流配电网稳                            可再生能源的大规模应用和智能电力系统的发
                                     [1]
                定运行的一个重要问题 。因此,研究柔性直流                            展,为实现清洁能源转型和能源可持续发展作出
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