基于UPFC的柔性倒闸控制器

doi:10.16180/j.cnki.issn1007-7820.2021.11.009

Abstract

Abstract:

The busbar switch directly performs rigid closing during the power system switching operation, and a large inrush current will be generated in the ring network, which seriously threatens the safe operation of the power system. Thus, a flexible switching controller based on UPFC is designed. By analyzing the topology structure and working principle of the unified power flow controller, the topology structure of the controller suitable for the busbar switch tripping is proposed. The parallel structure of the tripping controller is designed to adjust the voltage amplitude during closing, and the controller series structure is designed to adjust the voltage phase. The simulation verification results show that the flexible switching controller can make the terminal voltage vectors of the two busbars quickly reach the same, and realize the non-circulating current switching operation without circulating current.

Key words: FACTS, flexible switch, UPFC, circulating current, voltage adjustment, phase adjustment, transformer maintenance, converter

CLC Number:

TP273

WANG Yumei,LI Yaowei. Research on Flexible Switching Controller Based on UPFC[J].Electronic Science and Technology, 2021, 34(11): 55-61.

Figures/Tables 13

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Table 1

Voltage phase change"

周期	U₂电压相/(°)	$Δ$ φ=φ₂-φ $1$
T=0	10.00	10.00
0.5T	9.27	9.27
1.0T	10.18	10.18
1.5T	7.39	7.39
2.0T	9.39	9.39
2.5T	5.05	5.05
3.0T	1.87	1.87
3.5T	-0.21	0.21
4.0T	-0.26	0.26
4.5T	-0.41	0.41
5.0T	-0.11	0.11

Table 1

Table 2

Voltage amplitude change"

周期	U₂电压幅值/V	$Δ$ U=U₂- $U 1$
T=0	5 850.0	350.0
0.5T	5 837.0	347.0
1.0T	5 840.1	320.1
1.5T	5 803.9	303.9
2.0T	5 828.3	328.3
2.5T	5 770.8	270.8
3.0T	5 692.5	192.5
3.5T	5 571.2	71.2
4.0T	5 534.5	34.5
4.5T	5 506.1	6.1
5.0T	5 502.6	2.6

Table 2

Figure 9.

Figure 10.

Figure 11.

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Research on Flexible Switching Controller Based on UPFC

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