谐波影响下的高压直流输电系统运行特性分析

Guo Ziyu; Lin Tao; Jia Gengtao; Wang Liyong

doi:10.16383/j.aas.2017.e160020

Influence of Converter Bus Serious Harmonic Distortion on HVDC Transmission System

Guo Ziyu^{1
, ,},
Lin Tao^1
,,
Jia Gengtao^2
,,
Wang Liyong^3
,

1.
Solar Energy Efficient Use Collaborative Innovation Center, School of Electrical Engineering, Wuhan University, Wuhan 430072, China
2.
State Grid Shanghai Information and Telecommunication Company, Shanghai 200010, China
3.
State Grid Beijing Electric Power Company, Beijing 100031, China

Funds:

the National Natural Science Foundation of China 51177111

More Information

Author Bio:
Tao Lin received the B.S.E.E., M.E., and Ph.D.degrees from Huazhong University of Science and Technology, Wuhan, China, in 1991, 1994, and 1997, respectively.He joined Central China Power Group Co, Wuhan, China, as an R&D Engineer in 1997.From May 2000 to July 2005, he was with Nagasaki University, Japan, University of Bath, U.K., and University of Florida, USA.From 2007, he has been a full Professor at the School of Electrical Engineering, Wuhan University, Wuhan, China.His research interests include power quality, power system operation and control, power system relaying, distributed generation and micro-grid.E-mail:00008267@whu.edu.cn

Gengtao Jia graduated from Shanghai Jiao Tong University (SJTU), China, in 2012, he received the Ms.c.degree from University of Florida (UFL), US, in 2014.He is currently a stufi at State Grid Shanghai Information and Telecommunication Company.His research interests include communications in electrical power networks and flber communication networks.E-mail:gengtao jia@163.com

Liyong Wang received the Ms.c and Ph.D.degrees from Xi'an Jiaotong University (XJTU), China in 2003 and 2007.He is currently a stufi at State Grid Beijing Electric Power Company.His research interests include optimization of dispatching electricity market, power grid development plan and comprehensive plan.E-mail:13810007912@163.com

Corresponding author: Ziyu Guo received the B.Eng degree of electrical engineering from Wuhan University in 2013.He has been work for Ph.D.at Wuhan University ever since.His research interests include HVDC system and its controller.Corresponding author of this paper.E-mail:15071113736@163.com

谐波影响下的高压直流输电系统运行特性分析

doi: 10.16383/j.aas.2017.e160020

郭紫昱^1, ,,
林涛^1,,
贾耕涛^2,,
王立永^3,

1.
武汉大学电气工程学院太阳能高效利用湖北省协同创新中心武汉 430072
2.
国家电网上海市电力公司信息通信公司上海 200010
3.
国家电网北京市电力公司北京 100031

基金项目:

the National Natural Science Foundation of China 51177111

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- 被引次数: 7
出版历程
- 收稿日期: 2016-01-25
- 录用日期: 2016-04-09
- 刊出日期: 2017-08-20

摘要

Abstract: Possibility of serious harmonic distortion (SHD) increases as multi-infeed direct current (MIDC) transmission develops rapidly in recent years. In this paper, the mechanism of high voltage direct current (HVDC) controller working against SHD is proposed for theoretical derivation of phase locked loop (PLL) output and valve commutation process. To reduce static error of constant extinction angle (CEA) controller and enhance active power transmission, the insertion of current error (CE) controller into CEA is minified. A calculation of inverter operating point is proposed in the end. The correctness of mechanism and algorithm is verified through power systems computer aided design (PSCAD) simulation.
- High voltage direct current (HVDC) /
- converter /
- harmonics /
- serious harmonic distortion (SHD) /
- phase locked loop (PLL) /
- constant extinction angle (CEA)
Recommended by Associate Editor Chengdong Li
摘要: 随着多馈入直流工程的不断发展，换流站发生谐波扰动的概率大大增加.通过分析换流母线谐波对锁相环和换相过程的影响，研究了高压直流输电系统的控制器在谐波扰动下的运行特性.通过减少电流偏差控制器的输出量以减少定熄弧角控制器在谐波扰动中的稳态误差，提高了直流系统传输容量.最后提出了谐波扰动中系统运行点的计算方法.PSCAD软件的仿真结果证明了分析和计算方法的准确性.
- 高压直流输电 /
- 换流器 /
- 谐波 /
- 谐波扰动 /
- 锁相环 /
- 定熄弧角控制器
注释:

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Fig. 1 HVDC CIGRE-benchmark model.

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Fig. 2 Voltage wave when distortion occur.

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Fig. 3 PLL control block.

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Fig. 4 The output of $\theta$ by PLL.

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Fig. 5 Tracking frequency of PLL in SHD.

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Fig. 6 2-3 mode circuit in commutation process.

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Fig. 7 CEA control block.

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Fig. 8 Calculation flowchart of HVDC operating point in SHD.

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Fig. 9 The simulation result of extinction angles per cycle.

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Fig. 10 Min $r$ in one cycle.

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Fig. 11 Firing angle order in inverter.

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Fig. 12 Power of DC transmission.

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Fig. 13 Line-to-ground RMS voltage of PCC.

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Table Ⅰ Simulation and Calculation Result of $\gamma$ Per Cycle ( $^\circ$ )

Com-valve	Sim-result without harm	Cal-result without harm	Sim-result with harm	Cal-result with harm
3−1	15.12	15.07	19.58	18.36
4−2	15.12	15.07	16.45	16.36
5−3	15.12	15.07	9.98	10.69
6−4	15.12	15.07	19.58	18.36
1−5	15.12	15.07	16.45	16.36
2−6	15.12	15.07	9.98	10.69

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Table Ⅱ Simulation and Calculation Result of Operating Point in SHD

	M = 1	M = 0.2	Cal-results of m = 0.2
Voltage (l-g)	125.1	127.4	127.2
Active power (pu)	0.8959	0.9290	0.9298
min γ (°)	16.38	15.25	15.09
Firing order (°)	135.5−139	139−139.4	139.6

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参考文献(13)

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