黄颖峰,田巧红.基于广域协同优化的电力系统多机暂态稳定无功控制方法[J].电测与仪表,2025,62(8):170-177. Huangyingfeng,TIAN Qiaohong.Multi-machine transient stable reactive power control method for power system based on wide-area collaborative optimization[J].Electrical Measurement & Instrumentation,2025,62(8):170-177.
基于广域协同优化的电力系统多机暂态稳定无功控制方法
Multi-machine transient stable reactive power control method for power system based on wide-area collaborative optimization
为提升含高比例电力电子设备的电力系统暂态稳定性，提出一种基于广域测量系统(wide area measurement system, WAMS)的静止无功补偿器(static var compensator, SVC)优化控制策略。通过同步相量测量单元实时获取发电机母线电压相量，构建以发电机电功率与机械功率偏差最小为目标函数的粒子群优化模型，并结合电压幅值与相角灵敏度系数动态计算SVC最优无功功率注入量。创新性引入灵敏度系数刻画发电机有功功率对SVC无功功率的依赖关系，实现多发电机转子角振荡协同阻尼。在DIgSILENT PowerFactory 平台搭建IEEE 14节点系统，仿真结果表明，所提策略可有效降低转子角振荡幅度及斜率，使临界清除时间延长40 ms。与传统本地控制方法相比，所提方法突破了单一振荡阻尼限制，利用WAMS信息实现多机协调控制，为提升复杂电力系统暂态稳定性提供了新思路。
英文摘要:
To enhance the transient stability of power system with a high proportion of power electronic devices, an optimized control strategy for static var compensators (SVC) based on the wide area measurement system (WAMS) is proposed. The system obtains real-time generator bus voltage phasors via synchronized phasor measurement unit (PMU) and constructs a particle swarm optimization model with the objective function of minimizing the generator active power and mechanical power deviations. By dynamically calculating the optimal reactive power injection of the SVC using voltage amplitude and phase angle sensitivity coefficients, the method introduces the sensitivity coefficients to characterize the dependency of generator active power on SVC reactive power, which enables coordinated damping of multi-generator rotor angle oscillations. The IEEE 14-bus system is simulated on the DIgSILENT PowerFactory platform, and the simulation results show that the proposed strategy can effectively reduce rotor angle oscillation magnitude and slope, extending the critical clearing time by 40 ms. Compared with traditional local control methods, this approach overcomes the limitation of single-mode oscillation damping and utilizes WAMS information to achieve multi-machine coordinated control, providing a new perspective for improving the transient stability of complex power system.
