CAJ | 학술논문

特高压交流试验示范工程投运后显著地增强了华中、华北两大电网之间的电力交换能力,但特高压系统的大功率传输也对华中、华北电网联网安全稳定运行提出了更高的要求.利用直流输电系统传输功率的快速可控性,可以为暂态过程中的交流互联系统提供紧急调控手段,起到功率支援和阻尼振荡的作用.为此,对利用华中电网的直流输电系统进行紧急功率支援以提高交流互联系统暂态稳定性以及采用直流调制阻尼特高压线路功率振荡进行了研究.仿真结果表明,利用直流输电系统的紧急调控手段可以减少华中电网的切机切负荷量,增强特高压互联系统的暂态稳定性,并可提高交流系统阻尼,有效地抑制电网区域间的功率振荡.
특고압교류시험시범공정투운후현저지증강료화중、화북량대전망지간적전력교환능력,단특고압계통적대공솔전수야대화중、화북전망련망안전은정운행제출료경고적요구.이용직류수전계통전수공솔적쾌속가공성,가이위잠태과정중적교류호련계통제공긴급조공수단,기도공솔지원화조니진탕적작용.위차,대이용화중전망적직류수전계통진행긴급공솔지원이제고교류호련계통잠태은정성이급채용직류조제조니특고압선로공솔진탕진행료연구.방진결과표명,이용직류수전계통적긴급조공수단가이감소화중전망적절궤절부하량,증강특고압호련계통적잠태은정성,병가제고교류계통조니,유효지억제전망구역간적공솔진탕.
The capacity of power exchange between North China and Central China Grid is greatly strengthened after UHV is put into operation,and the great power transmitted by the UHV requires the higher level of security and stability in the Central China and North China interconnected power system.The rapid control of HVDC systems in the Central China Grid can be used as an emergency control measure in the transient process of AC power system for emergency power support and damping the oscillation.The feasibility of emergency power support of HVDC system in Central China Grid for improving the stability of interconnected power system and the effect of damping the UHV line power oscillation by DC Additional Control are studied and analyzed.Simulation results show that the use of DC emergency control can reduce cutting capacity,enhance the UHV interconnected system transient stability,improve the damping effectively,and suppress inter-regional power grid oscillation.