直流功率调制对黑龙江电网功角稳定性的作用分析

doi:10.11985/2018.04.006

摘要/Abstract

摘要：

以黑龙江电网为研究对象,当南送吉林、辽宁电网的交流通道发生故障时,将导致原来流向吉林、辽宁的潮流沿哈南–华民方向汇入扎鲁特,增加了潮流通道的等效阻抗,给黑龙江电网带来功角稳定性问题。本文利用扎青直流的功率调制来改善黑龙江电网的功角稳定性,提出利用Prony分析法对直流调制器进行参数整定,讨论了调制增益的变化对系统稳定性的影响。研究结果对实际电网运行中功角稳定性的改善具有一定的参考价值。

关键词: 高压直流输电, 黑龙江电网, 直流功率调制, Prony分析, 功角稳定

Abstract:

When fault occurs in AC channel which sent electric power from Heilongjiang to Jilin and Liaoning, the unbalance of power and the increase of transfer impedance will bring a great challenge to the rotor angle stability of the Heilongjiang grid. HVDC modulation has been considered to improve the rotor angle transient stability. The Prony method is used to tune the DC power modulator, and the influence of the variation of modulation gain on the stability of the system is also discussed. The study results are expected to be helpful for the operation of Heilongjiang power grid.

Key words: HVDC, Heilongjiang power grid, DC power modulation, Prony analysis, angle transient stability

中图分类号:

TM712

张帆,韩民晓,刘晋,徐洪涛,边二曼. 直流功率调制对黑龙江电网功角稳定性的作用分析[J]. 电气工程学报, 2018, 13(4): 38-45.

Zhang Fan,Han Minxiao,Liu Jin,Xu Hongtao,Bian Erman. Study of Rotor Angle Stability of Heilongjiang Power Grid by HVDC Power Modulation[J]. Journal of Electrical Engineering, 2018, 13(4): 38-45.

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幅值	衰减	频率/Hz	阻尼比	实部	虚部
12.817 4	-28.040 6	24.103 13	0.736 148	-28.040 6	151.780 7
9.653 58	-27.324 2	21.798 85	0.487 019	-27.324 2	136.901 6
3.019 32	-22.902 7	18.586 1	0.192 453	-22.902 7	116.78
3.925 24	-22.036 3	29.272	0.155 553	-22.036 3	183.939
3.017 62	-22.350 7	11.384 8	0.298 234	-22.350 7	71.532 8
2.219 2	-20.156 1	4.257 52	0.601 776	-20.156 1	26.750 8
2.576 18	-21.698	14.564 6	0.230 709	-21.698	91.511 9
2.302	-20.539 2	20.781 5	0.136 176	-20.539 2	130.424
1.598 03	-18.000 2	16.552 3	0.170 541	-18.000 2	104.001
1.284 01	-17.437 7	20.592 6	0.133 564	-17.437 7	129.387
1.200 34	-11.889 4	5.820 65	0.309 167	-11.889 4	36.572 2
1.190 84	-14.756 7	12.891 7	0.179 229	-14.756 7	81.000 9
0.411 814	-12.900 2	9.288 73	0.215 826	-12.900 2	58.362 8
0.036 72	-4.349 09	2.721 55	0.246 486	-4.349 09	17.1
0.000 62	-5.402 94	4.246 59	0.035 442	-5.402 94	26.668 6

K值	100	500	1 000	2 000	4 000	8 000
新华机组/(°)	2.1	3.3	5.7	9.0	15.7	-8.2
鹤岗机组/(°)	2.9	4.5	7.1	10.2	18.5	-6.1

K值	100	500	1 000	2 000	4 000	8 000
新华机组/s	0.23	0.23	0.23	0.24	0.26	0.21
鹤岗机组/s	0.23	0.23	0.24	0.24	0.27	0.22