A Gini Coefficient-Based Impartial and Open Dispatching Model

Liang Sun,Zhuo-Ran Song,Ning Li,Na Zhang,Wei-Dong Li

doi:10.3390/en13123146

Liang Sun, Zhuo-Ran Song + Show 3 more

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https://doi.org/10.3390/en13123146

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Abstract

According to the existing widely applied impartial and open dispatching models, operation fairness was mainly emphasized, which severely restricted the optimization space of the economy of the overall system operation and affected the economic benefits. To solve the above problems, a scheduling model based on Gini coefficient under impartial and open dispatching principle is proposed in this paper, which can consider the balance between the fairness and economy of system operation. In the proposed model, the Gini coefficient is introduced to describe the fairness of electric energy completion rate among different generation units in the form of constraint conditions. Because the electricity production schedule can reflect the economic income of the electric power enterprise, and the Gini coefficient is used as an economic statistical indicator to evaluate the fairness in the overall distribution of income in social statistics, it is more appropriate to be used to measure the fairness of the power generation dispatching. The objective of the proposed model is to minimize the total operation costs. In the model, the balance between the system operation economy and fairness can be realized by adjusting the Gini coefficient value. The simulation results show that the proposed model is an extension of the traditional model. Compared with the traditional economic dispatching model and normal “impartial and open dispatching” model, the proposed model can better coordinate the relationship between fairness and economy. It could provide more choices for power generation dispatchers. It could also provide a reference for regulatory departments to formulate relevant policies by adjusting the threshold value of the Gini coefficient. Case studies show that the power dispatching decisions according to the proposed model can provide a scientific and fair reference basis for dispatching schemes, and could reduce the generation costs and also achieve optimal allocation of resources on the basis of ensuring fair dispatching.

Highlights

In the past several decades, impartial and open dispatching has generally been implemented in some countries like China, power dispatching must be guaranteed for it to be open and fair.The assessed object of the impartial and open dispatching is the completion progress of the annual power generation plan issued by the government department, which requires the annual electric energy production completion rate of all the power plants to be approximately equal [1,2]
It is simulated with the Gini coefficient set to 0.3
In order to achieve the balance between the fairness and economy of power system operation, operation, an impartial impartial and andopen opendispatching dispatchingmodel model based

Summary

Introduction

In the past several decades, impartial and open dispatching has generally been implemented in some countries like China, power dispatching must be guaranteed for it to be open and fair.The assessed object of the impartial and open dispatching is the completion progress of the annual power generation plan issued by the government department, which requires the annual electric energy production completion rate of all the power plants to be approximately equal [1,2]. The impartial and open principle should be felicitously considered in the power system scheduling process. The unit’s operation adjustment space would be limited strictly if the impartial and open dispatching principle is excessive emphasized, resulting in higher power generation costs of the power system. The excessive emphasis on operational economy will result in a serious imbalance among the units’ power generation progresses, leading to conflicts and disputes among various power generation producers, which may disrupt the generation order, and reduce market efficiency. In the dispatching, the reliability, economy, and fairness of the system operation should be comprehensively considered to reasonably arrange the unit commitment and load distribution schedule of the power units [3,4,5,6]

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Conclusion