Journal of Shandong University(Engineering Science) ›› 2020, Vol. 50 ›› Issue (3): 104-110.doi: 10.6040/j.issn.1672-3961.0.2019.138

• Electrical Engineering • Previous Articles     Next Articles

Voltage control method of urban distribution network considering street light charging pile access

Shizhan SONG1(),Haoyu CHEN1,Jian ZHANG1,Kun WANG1,Qingshui HAO2,*()   

  1. 1. State Grid Zaozhuang Power Supply Company, Zaozhuang 277800, Shandong, China
    2. Shandong Greenthink Power Technology Co., Ltd., Jinan 250002, Shandong, China
  • Received:2019-04-19 Online:2020-06-20 Published:2020-06-16
  • Contact: Qingshui HAO E-mail:15266172927@163.com;15066685266@163.com
  • Supported by:
    国网山东省电力公司科技项目(2018A-062)

Abstract:

Aiming at the problem of voltage over-limit in urban distribution network, this paper proposed a voltage control method for electric vehicles participating in charging and discharging of street charging piles. The method utilized the transformer capacity released by the traditional high-pressure sodium light replaced by using the LED street light, and built a street light charging pile to participate in the voltage control of the urban distribution network as a controllable resource for the electric vehicle charged and discharged by the street light charging pile. Based on the analysis of the load characteristics of electric vehicle charging and discharging of street light charging pile, according to the characteristics of various voltage regulating resources in the distribution network, the multi-level voltage control strategy of urban distribution network was studied, and the optimal control cost of each voltage regulating measure was taken as the objective function. The voltage regulation model was established and the model was solved by particle swarm optimization. According to the characteristics of urban street lighting load, the daytime and nighttime scenarios were simulated. The simulation results verified the effectiveness of electric vehicle′s use of streetlight pile charging and discharging in urban distribution network voltage control. The control effect was verified by comparative analysis. It was better than traditional voltage control methods.

Key words: street light charging pile, electric vehicle, distributed generation, distribution network, voltage control

CLC Number: 

  • TM732

Fig.1

Power expectation of charging load in each time period of a day for electric vehicles"

Fig.2

Multi-level voltage control flow chart of urban distribution network considering street light charging pile access"

Fig.3

Particle swarm algorithm solution flow chart"

Fig.4

Improved IEEE 33-node distribution network structure"

Fig.5

Node voltage changes under different voltage regulation schemes during the day"

Fig.6

Node voltage changes under different voltage regulation schemes at night"

Table 1

Voltage index results under different control schemes"

控制方案Umax/puUmin/pu电压波动/%
无控制1.1410.91921.56
DG、OLTC与C控制1.0550.92313.35
DG、OLTC、C与EV控制1.0470.9549.30
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