Journal of Modern Power Systems and Clean Energy

ISSN 2196-5625 CN 32-1884/TK

Frequency-constrained Co-planning of Generation and Energy Storage with High-penetration Renewable Energy
Author:
Affiliation:

1.Key Laboratory of Control of Power Transmission and Conversion, Shanghai Jiao Tong University, Shanghai, China;2.East China Branch of State Grid Corporation, Shanghai, China

Fund Project:

This work was supported by the National Key R&D Program of China (No. 2016YFB0900100) and the National Natural Science Foundation of China (No. 51807116).

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
    Abstract:

    Large-scale renewable energy integration decreases the system inertia and restricts frequency regulation. To maintain the frequency stability, allocating adequate frequency-support sources poses a critical challenge to planners. In this context, we propose a frequency-constrained coordination planning model of thermal units, wind farms, and battery energy storage systems (BESSs) to provide satisfactory frequency supports. Firstly, a modified multi-machine system frequency response (MSFR) model that accounts for the dynamic responses from both synchronous generators and grid-connected inverters is constructed with preset power-headroom. Secondly, the rate-of-change-of-frequency (ROCOF) and frequency response power are deduced to construct frequency constraints. A data-driven piecewise linearization (DDPWL) method based on hyperplane fitting and data classification is applied to linearize the highly nonlinear frequency response power. Thirdly, frequency constraints are inserted into our planning model, while the unit commitment based on the coordinated operation of the thermal-hydro-wind-BESS hybrid system is implemented. At last, the proposed model is applied to the IEEE RTS-79 test system. The results demonstrate the effectiveness of our co-planning model to keep the frequency stability.

    表 6 Table 6
    表 4 Table 4
    表 1 Table 1
    表 5 Table 5
    表 2 Table 2
    图1 Schematic diagram of PFR from BESS.Fig.1
    图2 Schematic diagram of MSFR model.Fig.2
    图3 Schematic diagram of AMSFR model.Fig.3
    图4 Schematic diagram of IEEE RTS-79 bus test system.Fig.4
    图5 Power proportion on four typical days.Fig.5
    图6 Power profiles in all time intervals in WFC and WOFC cases. (a) WFC. (b) WOFC.Fig.6
    图7 System frequency response power in WFC and WOFC cases.Fig.7
    图8 Frequency trajectories of two cases in case of demand increase.Fig.8
    图9 Total cost and curtailment rate with different power penetration rates.Fig.9
    图10 Total cost and curtailment rate with different unbalanced power.Fig.10
    图11 Frequency response power with different unbalanced power.Fig.11
    表 3 Table 3
    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:November 09,2020
  • Revised:
  • Adopted:
  • Online: August 04,2021
  • Published: