Zhejiang Electric Power

2024, v.43;No.343(11) 74-89

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Partitioning of high-penetration renewable energy power systems for parallel restoration

ZHOU Wenjun;LI Ze;DING Bo;HAO Lili;DAI Xin;LAI Yening;

Abstract:

To expedite the restoration of high-penetration new energy power systems following outages, a partitioning method for parallel restoration is proposed. This method takes into account the characteristics of new energy output. Multi-time-step series scenarios are generated by comprehensively considering spatiotemporal correlation of the output of new energy power supply. An expected multi-time-step series scenario of new energy power supply, considering occurrence probability of each series scenario, is constructed. Based on the expected multi-time-step series scenario of the new energy power supply, the available power of each charged domain is determined, and each charged domain is partitioned accordingly. In cases where there is overlap in partitioning, adjustments are made for objects to be restored in the overlapping areas. Factors considered include time inertia constants, ramp rate, adjustment rate, expected additional generation capacity, and the restoration value of the de-energized branches. Finally, using the IEEE118-bus system as a basis, it is demonstrated that the proposed partitioning method for parallel restoration can accelerate the grid restoration and reduce the power outage losses.

Key Words: new energy power supply;spatiotemporal correlation;partition adjustment;net restoration benefit

Abstract:

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Foundation: 国家自然科学基金(61933005);; 国网江苏省电力有限公司科技项目(J2023080)

Authors: ZHOU Wenjun;LI Ze;DING Bo;HAO Lili;DAI Xin;LAI Yening;

DOI: 10.19585/j.zjdl.202411009

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