针对单相牵引负荷波动性大,随机性强,造成大量谐波、无功及负序分量的特点,提出一种应用于电气化铁路的单相无功动态补偿与谐波治理混合系统(hybrid var and harmonic dynamic compensator,HVHC)。系统由混合型有源电力滤波器(hybrid ac...针对单相牵引负荷波动性大,随机性强,造成大量谐波、无功及负序分量的特点,提出一种应用于电气化铁路的单相无功动态补偿与谐波治理混合系统(hybrid var and harmonic dynamic compensator,HVHC)。系统由混合型有源电力滤波器(hybrid active power filter,HAPF)及静止无功补偿器(static var compensator,SVC)组成,其中SVC包括晶闸管投切电容器(thyristor switched capacitor,TSC)和晶闸管控制电抗器(thyristor controlled reactor,TCR),用来动态连续补偿无功功率,HAPF用来动态抑制电网及无功补偿装置产生的谐波,电力机车产生的负序分量可通过在平衡变压器接线方式下控制2个牵引供电臂的负载来消除。提出HAPF和SVC复合控制策略及分频控制方法,可有效地消除两者之间的耦合,提高单相系统谐波及无功电流的跟踪精度,克服电网电压畸变对系统的影响。仿真及实验结果证明该系统响应速度快,抗干扰能力强,治理效果满足要求。展开更多
为提高6 k V级联STATCOM变流器中功率器件的等效开关频率,将载波层叠调制技术应用于STATCOM中。通过在Matlab/Simulink中进行仿真实验和在山东能源枣庄矿业集团有限责任公司付村煤矿地面6 k V变电所投入运行表明,采用载波层叠调制技术...为提高6 k V级联STATCOM变流器中功率器件的等效开关频率,将载波层叠调制技术应用于STATCOM中。通过在Matlab/Simulink中进行仿真实验和在山东能源枣庄矿业集团有限责任公司付村煤矿地面6 k V变电所投入运行表明,采用载波层叠调制技术可以有效地实现无功补偿与谐波治理的双赢效果。展开更多
How to speed up the establishment of marine ecological compensation and the ecological compensation system is inevitable choice from ocean country to marine power.Therefore,construction of marine ecological compensati...How to speed up the establishment of marine ecological compensation and the ecological compensation system is inevitable choice from ocean country to marine power.Therefore,construction of marine ecological compensation mechanism is the effective means which incentives marine ecosystem services supply,improves the quality of marine ecology,and promotes the ocean to the green transformation.Combined with Dalian maritime case study in Liaoning Province,three dimensional interactive marine ecological compensation mechanism,the compensation frame work,path and operation mechanism were built up.Suggestions on accelerating the legislation process;perfecting the management system;establishing proper system for both incentive constraint and reward-punishment;increasing the source of Ocean Ecological Compensation funds;accelerating On the study of the Ocean Ecological Compensation Mechanism in Liaoning Area from the Angl-e of Ecological Civilization Based on Case Analysis of Dalian.展开更多
文摘针对单相牵引负荷波动性大,随机性强,造成大量谐波、无功及负序分量的特点,提出一种应用于电气化铁路的单相无功动态补偿与谐波治理混合系统(hybrid var and harmonic dynamic compensator,HVHC)。系统由混合型有源电力滤波器(hybrid active power filter,HAPF)及静止无功补偿器(static var compensator,SVC)组成,其中SVC包括晶闸管投切电容器(thyristor switched capacitor,TSC)和晶闸管控制电抗器(thyristor controlled reactor,TCR),用来动态连续补偿无功功率,HAPF用来动态抑制电网及无功补偿装置产生的谐波,电力机车产生的负序分量可通过在平衡变压器接线方式下控制2个牵引供电臂的负载来消除。提出HAPF和SVC复合控制策略及分频控制方法,可有效地消除两者之间的耦合,提高单相系统谐波及无功电流的跟踪精度,克服电网电压畸变对系统的影响。仿真及实验结果证明该系统响应速度快,抗干扰能力强,治理效果满足要求。
文摘为提高6 k V级联STATCOM变流器中功率器件的等效开关频率,将载波层叠调制技术应用于STATCOM中。通过在Matlab/Simulink中进行仿真实验和在山东能源枣庄矿业集团有限责任公司付村煤矿地面6 k V变电所投入运行表明,采用载波层叠调制技术可以有效地实现无功补偿与谐波治理的双赢效果。
基金supported by the National Social Science Foundation: Research on Fiscal and Tax Policy Innovation and Mechanism of Coordinated Development of Regional Economy (14BJY003)Liaoning Social Science Foundation: Study on Ecological Compensation Mechanism of Liaoning Province (L13djy057)the Second Batch School of Marxism Major Research Direction Foundation Items of Liaoning Province: Study on Liaoning Province Ocean Strengthening Strategic Issues with Five Concepts Leading
文摘How to speed up the establishment of marine ecological compensation and the ecological compensation system is inevitable choice from ocean country to marine power.Therefore,construction of marine ecological compensation mechanism is the effective means which incentives marine ecosystem services supply,improves the quality of marine ecology,and promotes the ocean to the green transformation.Combined with Dalian maritime case study in Liaoning Province,three dimensional interactive marine ecological compensation mechanism,the compensation frame work,path and operation mechanism were built up.Suggestions on accelerating the legislation process;perfecting the management system;establishing proper system for both incentive constraint and reward-punishment;increasing the source of Ocean Ecological Compensation funds;accelerating On the study of the Ocean Ecological Compensation Mechanism in Liaoning Area from the Angl-e of Ecological Civilization Based on Case Analysis of Dalian.