CAJ | 학술논문

针对抑制由HVDC引起的次同步振荡问题,阐述了附加次同步振荡阻尼控制器(SSDC)抑制次同步振荡(SSO)的原理.对SSDC设计中的控制器结构、输入信号的选取、相位补偿和增益调整等方面进行了重点论述,分析了不同方案的优缺点.从工程应用的角度,提出了一种便于工程实现的SSDC设计方案.在此基础上,针对东北-华北联网的高岭背靠背换流站附近绥中发电机组的次同步振荡问题,设计了相应的SSDC.实时数字仿真(RTDS)和实际控制器的闭环试验验证了所设计的SSDC能有效地抑制SSO,并对HVDC的动态特性影响较小.
침대억제유HVDC인기적차동보진탕문제,천술료부가차동보진탕조니공제기(SSDC)억제차동보진탕(SSO)적원리.대SSDC설계중적공제기결구、수입신호적선취、상위보상화증익조정등방면진행료중점논술,분석료불동방안적우결점.종공정응용적각도,제출료일충편우공정실현적SSDC설계방안.재차기출상,침대동북-화북련망적고령배고배환류참부근수중발전궤조적차동보진탕문제,설계료상응적SSDC.실시수자방진(RTDS)화실제공제기적폐배시험험증료소설계적SSDC능유효지억제SSO,병대HVDC적동태특성영향교소.
Aiming at the SSR problem caused by HVDC, we analyzed the mechanism of mitigating SSO with SSDC, such as controller structure, signal selection, phase compensation and gain adjustment etc., in the process of SSDC design, and discussed the advantages and disadvantages of each option.From the view of engineering, we also pro-posed a scheme of SSDC which was easily realized.Based on the proposed scheme, the SSDC for mitigating Suizhong generation SSO, which was close to Gaoling Back-to-Back Converter Station, was designed.The closed-loop tests, Ion, ned by RTDS and physical controller, indicate that SSDC can effectively mitigate SSO and has little impact on the dynamic perforrnance of HVDC system.