CAJ | 학술논문

针对大规模电力系统二次调频控制的动态仿真问题，采用混杂系统的建模方法，提出一种适于机电暂态及中长期动态全过程仿真的自动发电控制模型。模型主要由属于连续动态系统的区域控制偏差计算、属于离散动态系统的控制策略和机组调节指令计算3个模块组成。通过与电力系统全过程动态仿真程序中已有模型的接口，该模型可以模拟大规模电网中基于A标准和CPS控制性能评价标准的控制策略，以及定频率控制、定交换功率控制和联络线功率频率偏差控制等多种方式。与我国特高压交流联络线相关的2个算例仿真表明，该模型可为大规模电网联络线功率波动限制、多区域AGC控制策略的协调配合和二次调频的优化控制等实际电网问题提供有效的仿真手段。
침대대규모전력계통이차조빈공제적동태방진문제，채용혼잡계통적건모방법，제출일충괄우궤전잠태급중장기동태전과정방진적자동발전공제모형。모형주요유속우련속동태계통적구역공제편차계산、속우리산동태계통적공제책략화궤조조절지령계산3개모괴조성。통과여전력계통전과정동태방진정서중이유모형적접구，해모형가이모의대규모전망중기우A표준화CPS공제성능평개표준적공제책략，이급정빈솔공제、정교환공솔공제화련락선공솔빈솔편차공제등다충방식。여아국특고압교류련락선상관적2개산례방진표명，해모형가위대규모전망련락선공솔파동한제、다구역AGC공제책략적협조배합화이차조빈적우화공제등실제전망문제제공유효적방진수단。
In order to dynamically simulate secondary power frequency control in large power systems, a new automatic generation control (AGC) model, which can be applied for power system electro-mechanical transient, medium-term and long-term dynamics simulation, is proposed based on the modeling method of hybrid system. It mainly consists of three parts:calculation of area control error (ACE), simulation of control strategy, and calculation of generating power regulation. The first module is modeled by the method of continuous dynamic systems, and the last two modules are modeled by the method of discrete event dynamic systems. By interfacing to the existing models in the power system unified dynamic simulation program, it is capable of simulating not only the three main control modes of AGC for large power systems, i.e., flat frequency control (FFC), constant net interchange control (CIC), and tie line bias frequency control (TBC), but also the widely-used control strategies based on CPS and A standard. Two simulation cases, which are related to the active power control for the tie-line in China UHVAC interconnected power grid, show that the proposed model can be used for analysis of such problems in large power system operation as smoothing of active power fluctuation on tie-line, coordination of AGC for multi-area control, optimal control of secondary power frequency control, etc..