The proposed system uses an algorithm that works on the admittance of the system,for estimating the reference values of generated currents for an off-grid wind power harnessing unit(WPHU).The controller controls the v...The proposed system uses an algorithm that works on the admittance of the system,for estimating the reference values of generated currents for an off-grid wind power harnessing unit(WPHU).The controller controls the voltage and maintains the frequency within the limits while working with both linear and nonlinear loads for varying wind speeds.The admittance algorithm is simple and easy to implement and works very efficiently to generate the triggering signals for the controller of the WPHU.The wind power harnessing unit comprising of a squirrel cage induction generator,a star-delta transformer,a battery storage system and the control unit are modeled using Matlab/Simulink R2019.An isolated transformer with a star-delta configuration connects the load and the generator circuit with the controller to reduce the dc bus voltage and mitigate current in the neutral line.The response of the system during the dynamic loading depends on the best possible compensator proportional-integral(PI)gains.The antlion optimization algorithm is compared with particle swarm optimization and grey wolf optimization and is found to have the advantages of good convergence,high efficiency and fast calculating speed.It is therefore used to extract the optimal values of frequency and voltage PI gains.The simulation results of the control algorithm for the WPHU are validated in a real-time environment in a dSpace1104 laboratory set up.This algorithm is proven to have a quick response,maintain the required frequency,suppress the current harmonics,regulate voltage,help in balancing the load and compensating for the neutral current.展开更多
为有效提高风电场的并网运行能力,将电池储能系统(battery energy storage system,BESS)-静止同步补偿器(static compensator,STATCOM)串联集成单元与风力发电单元相结合,建立基于Park变换的BESS-STATCOM集成单元和基于异步发电机风力...为有效提高风电场的并网运行能力,将电池储能系统(battery energy storage system,BESS)-静止同步补偿器(static compensator,STATCOM)串联集成单元与风力发电单元相结合,建立基于Park变换的BESS-STATCOM集成单元和基于异步发电机风力发电系统的整体动态数学模型,通过理论推导和基于仿真平台PSCAD对不同风速时风电场的出力及并网点的电压进行计算,结果表明,BESS-STATCOM集成单元具有快速功率调节能力,使风力发电单元可作为调度机组单元运行;在求解包含风电场的电力系统潮流时,可以将其视为PV节点,而且能够显著提高电网的运行稳定性和供电可靠性。展开更多
文摘The proposed system uses an algorithm that works on the admittance of the system,for estimating the reference values of generated currents for an off-grid wind power harnessing unit(WPHU).The controller controls the voltage and maintains the frequency within the limits while working with both linear and nonlinear loads for varying wind speeds.The admittance algorithm is simple and easy to implement and works very efficiently to generate the triggering signals for the controller of the WPHU.The wind power harnessing unit comprising of a squirrel cage induction generator,a star-delta transformer,a battery storage system and the control unit are modeled using Matlab/Simulink R2019.An isolated transformer with a star-delta configuration connects the load and the generator circuit with the controller to reduce the dc bus voltage and mitigate current in the neutral line.The response of the system during the dynamic loading depends on the best possible compensator proportional-integral(PI)gains.The antlion optimization algorithm is compared with particle swarm optimization and grey wolf optimization and is found to have the advantages of good convergence,high efficiency and fast calculating speed.It is therefore used to extract the optimal values of frequency and voltage PI gains.The simulation results of the control algorithm for the WPHU are validated in a real-time environment in a dSpace1104 laboratory set up.This algorithm is proven to have a quick response,maintain the required frequency,suppress the current harmonics,regulate voltage,help in balancing the load and compensating for the neutral current.
文摘为有效提高风电场的并网运行能力,将电池储能系统(battery energy storage system,BESS)-静止同步补偿器(static compensator,STATCOM)串联集成单元与风力发电单元相结合,建立基于Park变换的BESS-STATCOM集成单元和基于异步发电机风力发电系统的整体动态数学模型,通过理论推导和基于仿真平台PSCAD对不同风速时风电场的出力及并网点的电压进行计算,结果表明,BESS-STATCOM集成单元具有快速功率调节能力,使风力发电单元可作为调度机组单元运行;在求解包含风电场的电力系统潮流时,可以将其视为PV节点,而且能够显著提高电网的运行稳定性和供电可靠性。
