Available Transfer Capability Decision-Making Based on Security Risk Assessment and Insurance Mechanism

doi:10.12204/j.issn.1000-7229.2021.08.014

Abstract

Abstract:

Current available transfer capability (ATC) decision-making methods fail to combine security and economy, and the power grid companies also lack effective risk-management mechanism for compensation losses. Therefore, an ATC decision-making method based on security risk assessment and insurance mechanism is proposed. Firstly, a comprehensive risk-assessment index is introduced as a reference and an ATC decision-making method taking the security risk of N-1 contingencies into consideration is proposed. Then, to calculate power grid companies’ risk and benefit after each ATC decision-making, evaluation indexes of risk and benefit of ATC which consider the influence of uncertain factors in power system is established. Finally, the insurance theory is introduced into the risk management of power grid companies, and the insurance mechanism is used to appropriately transfer and avoid the risk of compensation losses caused by inevitable load interruption. The results show that the presented method is able to improve the economic benefit for power grid companies when certain security constrains are met; that insurance mechanism can effectively helps to reduce the risk and improve the stability of economic benefit. The proposed method can provide a reference for power grid companies’ ATC decision-makings.

Key words: available transfer capability (ATC), security risk assessment, economic benefit, risk transfer, insurance mechanism

CLC Number:

TM732

LIU Kaiqi, LI Huaqiang, LU Yang, LI Xuxiang. Available Transfer Capability Decision-Making Based on Security Risk Assessment and Insurance Mechanism[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(8): 118-126.

Figures/Tables 11

Fig.1 Loss severity curve of power grid companies

Fig.2 The risk transfer mechanism for economic loss

Fig.3 Framework of the decision-making method

Fig.4 Connection diagram of IEEE 30-node system

Table 1

Fig.5 Comparison of results in three cases

Table 2 Top 10 security risk value of N-1 contingency

Fig.6 Scatter for income before and after insurance mechanism

Table 3 Comparison of results before and after insurance mechanism

Table 4 Income of insurance institutions

Fig.7 Results under different franchises

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