Comparison and Applicability of New Generation Synchronous Condenser and STATCOM Based on Characteristic Analysis in Frequency and Time Domains

doi:10.12096/j.2096-4528.pgt.20128

Abstract

Abstract:

The dynamic characteristics of new generation synchronous condenser and static synchronous compensator (STATCOM) were compared in both frequency and time domains in this paper, based on which their applicability under different scenes was analyzed. Firstly, an effective reactive current gain index was proposed to realize the dynamic response evaluation, via which the characteristics of two devices were studied in the frequency domain. The analyses include their effectiveness and comparison of phase and amplitude frequency characteristics under voltage fluctuation of different frequencies. Based on the current and planning power systems, their dynamic characteristics were compared in the time domain, considering the application demands for frequency and steady-state overvoltage restraining in sending-end power systems, the decreasing the possibility of simultaneous commutation failure in multiple DC lines, and the increasing transient voltage stability of receiving-end power systems. Their technical advantages and applicability under different scenes were finally analyzed and compared, to provide technical support of dynamic reactive power compensator selection in planning power systems.

Key words: synchronous condenser, static synchronous compensator (STATCOM), dynamic characteristics in frequency domain, dynamic characteristics in time domain

CLC Number:

TK01
TM727

Yichi ZHANG, Zhiqiang LI, Zhe WANG, Qinyong ZHOU, Jincheng GUO, Shan JIANG, Baoxin LI, Gang ZHAO. Comparison and Applicability of New Generation Synchronous Condenser and STATCOM Based on Characteristic Analysis in Frequency and Time Domains[J]. Power Generation Technology, 2021, 42(1): 69-77.

Figures/Tables 11

References 22

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项目	调相机	STATCOM
设备类型	旋转设备，向系统提供转动惯量	静止设备
短路电流	提供	不提供
出力特性	无功输出受系统电压影响小	基本与系统电压成正比
无功类型	容性/感性	容性/感性

项目	调相机	STATCOM
设备类型	旋转设备，向系统提供转动惯量	静止设备
短路电流	提供	不提供
出力特性	无功输出受系统电压影响小	基本与系统电压成正比
无功类型	容性/感性	容性/感性

直流名称	电压等级/kV	额定容量/MW
复龙—奉贤	±800	6 400
团林—枫泾	±500	3 000
宜都—华新	±500	3 000
葛洲坝—南桥	±500	1 200
锡盟—泰州	±800	10 000
晋北—南京	±800	8 000
锦屏—苏州	±800	7 200
龙泉—政平	±500	3 000
宜宾—金华	±800	8 000
宁东—绍兴	±800	8 000
准东—皖南	±1 100	12 000
馈入总容量		69 800

直流名称	电压等级/kV	额定容量/MW
复龙—奉贤	±800	6 400
团林—枫泾	±500	3 000
宜都—华新	±500	3 000
葛洲坝—南桥	±500	1 200
锡盟—泰州	±800	10 000
晋北—南京	±800	8 000
锦屏—苏州	±800	7 200
龙泉—政平	±500	3 000
宜宾—金华	±800	8 000
宁东—绍兴	±800	8 000
准东—皖南	±1 100	12 000
馈入总容量		69 800

故障线路名称	动态无功补偿方案
故障线路名称	无措施	调相机	STATCOM
石牌—昆南	11	8	9
龙王山—三汊湾	11	4	8
车坊—玉山	10	7	7
石牌—玉山	10	7	9
东善—龙王山	9	4	8
茅山—谏厂	9	7	9
溧阳—天目	9	6	9
岷珠—宜抽	9	4	8
江都—扬二	8	4	7
江都—仪征	4	2	3
武南—茅山	4	2	3