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首页> 外文期刊>Renewable Power Generation, IET >Effect of ECS low-pass filter timing on grid frequency dynamics of a power network considering wind energy penetration
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Effect of ECS low-pass filter timing on grid frequency dynamics of a power network considering wind energy penetration

机译：考虑风能渗透的ECS低通滤波器时序对电网电网频率动态的影响

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摘要

This study investigates the effect of wind energy penetration on the frequency response of a multi-machine power network considering different time constants of a low-pass filter (LPF) in the DC chopper of an energy capacitor system (ECS). The power network is made up of wind farm composed of fixed speed induction generator interconnected to a steam and hydro synchronous power plants. Heavy and light loads were connected in the system. The ECS is connected at the terminal of the wind turbine. The LPF time constant parameter was varied for different cases considering the same wind speed for the wind turbine. Scenarios with and without considering the synergy of a series dynamic braking resistor (SDBR) connected to the stator of the wind turbine and the ECS were investigated. The results obtained were compared to a case where no frequency control was employed in the power network. Simulations were carried out in power system computer aided design and electromagnetic transient including DC. The results show that a higher time constant of the LPF effectively damp the oscillations of the grid variables and restores quickly the system during network disturbance. The SDBR was used to further enhance the performance of the ECS.
机译：这项研究考虑了能量电容器系统（ECS）的直流斩波器中低通滤波器（LPF）的不同时间常数，研究了风能渗透对多机电网频率响应的影响。电网由风力发电场组成，风力发电场由与蒸汽和水力发电站互连的定速感应发电机组成。系统连接了重负载和轻负载。 ECS连接在风力涡轮机的端子处。考虑到风力涡轮机的相同风速，LPF时间常数参数针对不同情况而变化。研究了在不考虑将串联动态制动电阻器（SDBR）连接到风力发电机定子和ECS的协同作用的情况下的情况。将获得的结果与未在电网中使用频率控制的情况进行比较。在电力系统计算机辅助设计和包括DC在内的电磁瞬变中进行了仿真。结果表明，较高的LPF时间常数可以有效地抑制电网变量的振荡，并在电网扰动期间快速恢复系统。 SDBR用于进一步增强ECS的性能。

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