采用同步电压反转(synchronous voltage reversal,SVR)触发控制的可控串联补偿电容(thristor controlled series compensator,TCSC)本身不会诱发系统的次同步谐振(sub-synchronous resonance SSR),而且因为其在次同步频率范围内固有的...采用同步电压反转(synchronous voltage reversal,SVR)触发控制的可控串联补偿电容(thristor controlled series compensator,TCSC)本身不会诱发系统的次同步谐振(sub-synchronous resonance SSR),而且因为其在次同步频率范围内固有的感性阻抗特性,一直以来工程中都把TCSC作为一种缓解SSR的有效措施。虽然采用SVR触发的TCSC可缓解系统SSR的压力,但其本身却无法主动抑制SSR,该文提出一种TCSC的附加控制——主动阻尼控制,通过调节TCSC的触发,可使系统在危险振荡模式下向机组提供正值的电气阻尼,从而更好地抑制SSR。时域及频域的仿真也验证了该主动阻尼控制的有效性。展开更多
In order to facilitate the electricity market operation and trade in the restructured environment, ample transmission capability should be provided to satisfy the demand of increasing power transactions. The conflict ...In order to facilitate the electricity market operation and trade in the restructured environment, ample transmission capability should be provided to satisfy the demand of increasing power transactions. The conflict of this requirement and the restrictions on the transmission expansion in the restructured electrical market has motivated the development of methodologies to enhance the Available Transfer Capability (ATC) of the existing transmission grids. The insertion of FACTS devices in electrical systems seems to be a promising strategy to enhance ATC. In this paper, the viability and technical merits of boosting ATC using Thyristor Controlled Series Compensator (TCSC) is being analyzed. The work has been carried out on IEEE 30 bus and IEEE 118 bus systems. Bilateral and multilateral transactions are considered. Particle Swarm Optimization (PSO) algorithm and Genetic Algorithm (GA) are employed to obtain the optimal settings of TCSC.展开更多
可控串补(thyristor controlled series compensator,TCSC)对次同步振荡(subsynchronous oscillation,SSO)的阻尼作用受到多种因素的影响,其相关研究也结论不一。因此仅依靠TCSC自身特性来抑制SSO,其效果有待以后更进一步的研究。目前...可控串补(thyristor controlled series compensator,TCSC)对次同步振荡(subsynchronous oscillation,SSO)的阻尼作用受到多种因素的影响,其相关研究也结论不一。因此仅依靠TCSC自身特性来抑制SSO,其效果有待以后更进一步的研究。目前有必要从主动抑制的方向出发,研究TCSC的次同步振荡附加阻尼控制,为SSO的抑制提供更可靠的保障。基于机电扭振互作用的机制,对抑制SSO的原理进行分析,提出一种基于相位补偿原理的TCSC次同步振荡附加阻尼控制方法。针对某一实际串补系统,基于动态相量法对其建模,通过小干扰稳定分析,比较TCSC附加阻尼控制加入前后的模态阻尼比。分析结果表明:在该控制下,系统阻尼增强,并在各模态扭振频率下均呈现正阻尼,时域仿真也验证了控制的有效性。展开更多
文摘采用同步电压反转(synchronous voltage reversal,SVR)触发控制的可控串联补偿电容(thristor controlled series compensator,TCSC)本身不会诱发系统的次同步谐振(sub-synchronous resonance SSR),而且因为其在次同步频率范围内固有的感性阻抗特性,一直以来工程中都把TCSC作为一种缓解SSR的有效措施。虽然采用SVR触发的TCSC可缓解系统SSR的压力,但其本身却无法主动抑制SSR,该文提出一种TCSC的附加控制——主动阻尼控制,通过调节TCSC的触发,可使系统在危险振荡模式下向机组提供正值的电气阻尼,从而更好地抑制SSR。时域及频域的仿真也验证了该主动阻尼控制的有效性。
文摘In order to facilitate the electricity market operation and trade in the restructured environment, ample transmission capability should be provided to satisfy the demand of increasing power transactions. The conflict of this requirement and the restrictions on the transmission expansion in the restructured electrical market has motivated the development of methodologies to enhance the Available Transfer Capability (ATC) of the existing transmission grids. The insertion of FACTS devices in electrical systems seems to be a promising strategy to enhance ATC. In this paper, the viability and technical merits of boosting ATC using Thyristor Controlled Series Compensator (TCSC) is being analyzed. The work has been carried out on IEEE 30 bus and IEEE 118 bus systems. Bilateral and multilateral transactions are considered. Particle Swarm Optimization (PSO) algorithm and Genetic Algorithm (GA) are employed to obtain the optimal settings of TCSC.
文摘可控串补(thyristor controlled series compensator,TCSC)对次同步振荡(subsynchronous oscillation,SSO)的阻尼作用受到多种因素的影响,其相关研究也结论不一。因此仅依靠TCSC自身特性来抑制SSO,其效果有待以后更进一步的研究。目前有必要从主动抑制的方向出发,研究TCSC的次同步振荡附加阻尼控制,为SSO的抑制提供更可靠的保障。基于机电扭振互作用的机制,对抑制SSO的原理进行分析,提出一种基于相位补偿原理的TCSC次同步振荡附加阻尼控制方法。针对某一实际串补系统,基于动态相量法对其建模,通过小干扰稳定分析,比较TCSC附加阻尼控制加入前后的模态阻尼比。分析结果表明:在该控制下,系统阻尼增强,并在各模态扭振频率下均呈现正阻尼,时域仿真也验证了控制的有效性。
