Analysis on the Operating Characteristic of UHVDC New Hierarchical Connection Mode to AC System

Huang Xiaojuan, Sun Jun, Fu Rong, Sun Wanqian

Abstract


The UHVDC system plays an important role in smart grids. In this paper, a new topology structure of UHVDC hierarchical
connection mode to different AC systems is analyzed with a view to improving system transmission abilities. Then a new
mathematical model is proposed to calculate the MIIF under different UHVDC hierarchical connection modes. The effect
of coupling impedance, equivalent impedance and different DC control mode adopted by two group inverters are illustrated
to analyze the MIIF. The method to calculate the MISCR of the multi-infeed HVDC system is also applied to HISCR of
UHVDC hierarchical connection mode with the MIIF value. In UHVDC hierarchical connection mode, total power to different
hierarchical active current layer can be allocated reasonably to change parameter of the received power grid. Thus, the
commutation failure can be analyzed according the MIIF change values of UHVDC hierarchical connection mode to the AC
system. Therefore, it may increase the risk of commutation failure in the other converter when one converter is in a state of
commutation failure. The correctness of the proposed method is verified by PSCAD simulation. The simulation results are
illustrated to verify the operating characteristics of the system.

Keywords


UHVDC, Hierarchical Connection Mode, MIIF, HISCR, Commutation failure

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References


Y. Han, H. Chen, Y. Lu, L. Li, Research on DC transient overvoltage

and insulation coordination of 800kv converter station, in: Power and

Energy Engineering Conference (APPEEC), 2011 Asia-Pacific, IEEE,

, pp. 1–4.

F. Wang, H. Li, J. Liu, W. Lu, W. Chen, Q. Long, Analysis of UHVDC

transient overvoltage based on the actual control and protection strategy,

in: 2014 IEEE PES Asia-Pacific Power and Energy Engineering

Conference (APPEEC), IEEE, 2014, pp. 1–4.

M. Saeedifard, R. Iravani, Dynamic performance of a modular multilevel

back-to-back HVDC system, IEEE Transactions on Power Delivery

(4) (2010) 2903–2912.

G.-h. Ye, Y. Zhang, System static safety analysis under multi-UHVDC

hierarchically infeed mode, in: AC and DC Power Transmission, 11th

IET International Conference on, IET, 2015, pp. 1–8.

X.-h. Li, F. Long, Z.-x. Cai, L. Zhu, Modeling and analysis of large

scale power system with multi-infeed HVDC by EMTDC, in: 2010 Asia-

Pacific Power and Energy Engineering Conference, IEEE, 2010, pp.

–4.

Y. Liu, Z. Chen, Short circuit ratio analysis of multi-infeed HVDC system

with a VSC-HVDC link, in: IECON 2011-37th Annual Conference

on IEEE Industrial Electronics Society, IEEE, 2011, pp. 949–954.

H. Dai, Y. Wang, X. Li, Z. Ming, H. Deng, Characteristic analysis of

reactive power compensation device at HVDC converter station, in:

Asia-Pacific Power and Energy Engineering Conference, IEEE,

, pp. 1–5.

L. Weifang, T. Yong, B. Guangquan, S. Yao, Voltage stability analysis

of multi-infeed AC/DC power system based on multi-infeed short circuit

ratio, in: Power System Technology (POWERCON), 2010 International

Conference on, IEEE, 2010, pp. 1–6.

X. Jin, B. Zhou, L. Guan, X. CHENG, Y. ZHANG, HVDC-interactionstrength

index for the multi-infeed-HVDC power system, Automation of

Electric Power System 33 (2009) 98–102.

X. Chen, A. Gole, M. Han, C. Liu, Influence of the miif index on operation

of multi-infeed HVDC systems, in: Electrical Power and Energy

Conference (EPEC), 2011 IEEE, IEEE, 2011, pp. 216–221.

Y. Wang, X. Li, C. Wen, Y. He, Impact of AC system strength on commutation

failure at HVDC inverter station, in: 2012 Asia-Pacific Power

and Energy Engineering Conference, IEEE, 2012, pp. 1–4.

P. Wang, Y. Zhang, H. Chen, X. Li, S. Song, J. Bai, Analysis on the

interaction of AC/DC systems based on multi-infeed Q effective short

circuit ratio, in: 2012 Asia-Pacific Power and Energy Engineering Conference,

IEEE, 2012, pp. 1–4.

Y. Xiaoyu, W. Yuanyuan, G. Weimin, W. Qiang, T. Yaohua, A generator

control strategy for reducing the load shedding amount after the

UHVDC commutation failure, in: Power System Technology (POWERCON),

International Conference on, IEEE, 2014, pp. 1001–1007.

E. Rahimi, A. Gole, J. Davies, I. Fernando, K. Kent, Commutation failure

in single-and multi-infeed HVDC systems, in: AC and DC Power

Transmission, 2006. ACDC 2006. The 8th IEE International Conference

on, IET, 2006, pp. 182–186.

L. Xin-Nian, L. Yao, L. Tao, C. Shu-Yong, L. Xiao, L. Shao-Bo, Study

on the impact of commutation failure on AC voltage of rectifier-side in

UHVDC, in: Power System Technology (POWERCON), 2014 International

Conference on, IEEE, 2014, pp. 2154–2161.

R. Zhang, C. Zhao, Prony analysis of electrical transient characteristics

of AC system during HVDC commutation failure, in: IPEC, 2010

Conference Proceedings, IEEE, 2010, pp. 807–812.


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