基于蓄电池充放电特性约束的虚拟同步机控制参数边界研究  

Research on the boundary of VSG control parameters based on the power characteristic of battery charging and discharging

作　　者：叶新[1] 杨欢[1] 董宁波 韩俊飞 YE Xin;YANG Huan;DONG Ning-bo(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027 [2]内蒙古电力〈集团〉有限责任公司,内蒙古呼和浩特010020

出　　处：《能源工程》2019年第4期48-57,共10页Energy Engineering

基　　金：内蒙古电力(集团)有限责任公司科技项目资助(内电科信[2017]46号)

摘　　要：虚拟同步机能够模拟传统同步发电机的机电暂态特性,是解决电网在分布式电源高渗透率下系统惯量和阻尼缺失问题的有效途径。由于储能单元是实现虚拟同步机惯量与阻尼特性的重要物理基础,故重点分析了储能单元物理特性对系统控制参数边界的影响,以铅酸蓄电池为例得到了蓄电池荷电状态、功率、功率变化率等充放电特性约束下的控制参数运行边界,为系统参数整定提供了分析依据。最后通过Matlab/Simulink仿真实例分析,验证了所提方案的正确性。Virtual synchronous generator(VSG) is an effective way to solve the problem of the lack of system inertia and damping under the condition of high permeability of distributed energy in power system for that it can simulate the electromechanical transient characteristic of the traditional synchronous generator. The energy storage unit is an important physical foundation to realize the inertia and damping of the virtual synchronous generator. The influence of energy storage characteristics on system control parameters boundaries was analyzed and the restriction of the operation border considering the state of charge, charging/discharging power and power ramp/dip was calculated, providing a certain theoretical basis for the VSG system parameter. Finally, Matlab/Simulink was used to simulate the system performance and verify the correctness of the proposed scheme.

关 键 词：虚拟同步机 分布式发电 蓄电池 充放电特性 参数边界 

分 类 号：TM721[电气工程—电力系统及自动化]