Wind energy （WE） has become immensely popular for distributed generation （DG）. This case presents the monitoring, modeling, control, and analysis of the two-level three-phase WE based DG system where the electric ...Wind energy （WE） has become immensely popular for distributed generation （DG）. This case presents the monitoring, modeling, control, and analysis of the two-level three-phase WE based DG system where the electric grid interfacing custom power device （CPD） is controlled to perform the smart exchanging of electric power as per the Indian grid code. WE is connected to DC link of CPD for the grid integration purpose. The CPD based distributed static compensator, i.e. the distributed static synchronous compensator （DSTATCOM）, is utilized for injecting the wind power to the point of common coupling （PCC） and also acts against the reactive power demand. The novel indirect current control scheme of DSTATCOM regulates the power import and export between the WE and the electric grid system. It also acts as a compensator and performs both the key features simultaneously. Hence, the penetration of additional generated WE power to the grid is increased by 20% to 25%. The burden of reactive power compensation from grid is reduced by DSTATCOM. The modeling and simulation are done in MATLAB. The results are validated and verified.展开更多
为提高提高多机电力系统的暂态稳定性,该文首先建立了静止无功补偿器(static var compensator,SVC)系统的一个含有时变参数不确定性的二阶非线性动态模型,然后在SVC动态模型的基础上,利用自适应控制技术和鲁棒控制技术设计了SVC系统的...为提高提高多机电力系统的暂态稳定性,该文首先建立了静止无功补偿器(static var compensator,SVC)系统的一个含有时变参数不确定性的二阶非线性动态模型,然后在SVC动态模型的基础上,利用自适应控制技术和鲁棒控制技术设计了SVC系统的控制器。为了验证所设计的控制器的有效性,以一个经典的三机九母线电力系统作为测试系统,对鲁棒自适应SVC控制器与PID SVC控制器和反馈线性化SVC控制器分别进行了比较研究。仿真结果表明,与PID SVC控制器和反馈线性化SVC控制器相比,所提出的鲁棒自适应SVC控制器具有良好的性能。展开更多
分析了静止同步发生器(static synchronous compensator,STATCOM)与静止无功补偿装置(static var compensation,SVC)的工作特性与基本原理;对STATCOM与SVC的性能从多角度进行了比较。得出STATCOM具有响应速度快、控制方法先进、谐波含...分析了静止同步发生器(static synchronous compensator,STATCOM)与静止无功补偿装置(static var compensation,SVC)的工作特性与基本原理;对STATCOM与SVC的性能从多角度进行了比较。得出STATCOM具有响应速度快、控制方法先进、谐波含量少等优点,并对实际应用做了分析和介绍。指出了STATCOM是无功补偿与谐波抑制综合技术的发展方向,也是电能质量研究的重点内容。展开更多
随着煤矿机电设备自动化程度的不断提升,输送机、破碎机、工矿电机车等大功率电动机和大型综采设备、变频器等大量非线性负载不断投入,引起较大的无功功率消耗,导致煤矿电网功率因数、供电质量与稳定性下降,给煤矿安全生产及经济效益带...随着煤矿机电设备自动化程度的不断提升,输送机、破碎机、工矿电机车等大功率电动机和大型综采设备、变频器等大量非线性负载不断投入,引起较大的无功功率消耗,导致煤矿电网功率因数、供电质量与稳定性下降,给煤矿安全生产及经济效益带来较大影响。静止无功发生器SVG(Static Var Generator)作为新一代高压动态无功补偿装置,响应速度快,配合滤波电容器FC(Filter Capacitor)兼具补偿无功、谐波和不平衡功能,对于提高煤矿电能质量具有良好的作用。对煤矿用SVG无功补偿装置系统参数进行了设计,并介绍了装置应用情况。展开更多
文摘Wind energy （WE） has become immensely popular for distributed generation （DG）. This case presents the monitoring, modeling, control, and analysis of the two-level three-phase WE based DG system where the electric grid interfacing custom power device （CPD） is controlled to perform the smart exchanging of electric power as per the Indian grid code. WE is connected to DC link of CPD for the grid integration purpose. The CPD based distributed static compensator, i.e. the distributed static synchronous compensator （DSTATCOM）, is utilized for injecting the wind power to the point of common coupling （PCC） and also acts against the reactive power demand. The novel indirect current control scheme of DSTATCOM regulates the power import and export between the WE and the electric grid system. It also acts as a compensator and performs both the key features simultaneously. Hence, the penetration of additional generated WE power to the grid is increased by 20% to 25%. The burden of reactive power compensation from grid is reduced by DSTATCOM. The modeling and simulation are done in MATLAB. The results are validated and verified.
文摘为提高提高多机电力系统的暂态稳定性,该文首先建立了静止无功补偿器(static var compensator,SVC)系统的一个含有时变参数不确定性的二阶非线性动态模型,然后在SVC动态模型的基础上,利用自适应控制技术和鲁棒控制技术设计了SVC系统的控制器。为了验证所设计的控制器的有效性,以一个经典的三机九母线电力系统作为测试系统,对鲁棒自适应SVC控制器与PID SVC控制器和反馈线性化SVC控制器分别进行了比较研究。仿真结果表明,与PID SVC控制器和反馈线性化SVC控制器相比,所提出的鲁棒自适应SVC控制器具有良好的性能。
文摘分析了静止同步发生器(static synchronous compensator,STATCOM)与静止无功补偿装置(static var compensation,SVC)的工作特性与基本原理;对STATCOM与SVC的性能从多角度进行了比较。得出STATCOM具有响应速度快、控制方法先进、谐波含量少等优点,并对实际应用做了分析和介绍。指出了STATCOM是无功补偿与谐波抑制综合技术的发展方向,也是电能质量研究的重点内容。
文摘随着煤矿机电设备自动化程度的不断提升,输送机、破碎机、工矿电机车等大功率电动机和大型综采设备、变频器等大量非线性负载不断投入,引起较大的无功功率消耗,导致煤矿电网功率因数、供电质量与稳定性下降,给煤矿安全生产及经济效益带来较大影响。静止无功发生器SVG(Static Var Generator)作为新一代高压动态无功补偿装置,响应速度快,配合滤波电容器FC(Filter Capacitor)兼具补偿无功、谐波和不平衡功能,对于提高煤矿电能质量具有良好的作用。对煤矿用SVG无功补偿装置系统参数进行了设计,并介绍了装置应用情况。
