Optimal Risk Reserve Dispatch Model Incorporating Photovoltaic Power Based on Inverse-time Line Protection

doi:10.12096/j.2096-4528.pgt.19006

Abstract

Abstract:

Aiming at the insecurity of photovoltaic (PV) grid-connected system and the high cost of traditional reserve configuration, a reserve optimization model in different scenes of the system was established to improve security and economy. The risks of loss load and solar power curtailment were introduced in the model. The objective function of the model was to minimize the generation and reserve costs within the constraints of power balance, generation unit characteristics and interruptible load. The inverse-time characteristic of line protection was utilized to transform the power flow constraints into the thermal stability limit. The optimal reserve dispatch model with different responding speed of PV grid-connected system was obtained. The rationality of the model and the effectiveness of the method were verified by an IEEE 30 test system with PV.

Key words: PV grid-connected, inverse-time characteristic, reserve configuration, risk indicator, thermal stability limit

CLC Number:

TM615

Yanyong YANG,Qiang XU,Zhu LI,Chenghao HOU,Xiuju YANG,Bikai YU,Xia LEI. Optimal Risk Reserve Dispatch Model Incorporating Photovoltaic Power Based on Inverse-time Line Protection[J]. Power Generation Technology, 2020, 41(4): 437-446.

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