Optimized Study of Energy Storage Systems Capacity for Power Smoothing of Distribution Containing DG
[1]DUAN Jundong,FU Ziheng,ZHANG Pusheng,et al.Optimized Study of Energy Storage Systems Capacity for Power Smoothing of Distribution Containing DG[J].Journal of Zhengzhou University (Engineering Science),2020,41(05):50-54.[doi:10.13705/j.issn.1671-6833.2020.03.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41卷
Number of periods:
2020 05
Page number:
50-54
Column:
Public date:
2020-10-01
- Title:
- Optimized Study of Energy Storage Systems Capacity for Power Smoothing of Distribution Containing DG
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2020.03.011
- Abstract:
- In DG, such as wind power generation or photovoltaic power generation being connected to the grid, the intermittence and instability of power generation and the periodicity and seasonality of the electric load would aggravate the power fluctuation of the distribution network, which could consequently destroy the power stability of the main power grid. In order to reduce DG power fluctuations on the distribution network, a capacity determination method of ESS was examined. The EMD method was used to decompose the distribution network which contained the DG power output samples. Based on the results, considering the ESS charge-discharge efficiency and the state of charge (SOC) constraints, the minimum ESS energy capacity was determined. Numerical outcomes proved that the capacity determination method of ESS could reduce the power volatility of the distribution network containing DG significantly. The example showed that the ESS which was configured as curve 3 could reduce the power volatility from 53.46% to 24.67% in 30 minutes, while keeping the system stable. Moreover, it had some peak load shifting effect which could lower the pressure of peak shaving of the electric power system.
- References:
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Last Update:
2020-10-23