Application and Prospect of Two-Part Tariff Mechanism in Context of Transmission and Distribution Price Reform

doi:10.16183/j.cnki.jsjtu.2023.102

Abstract

Abstract:

In the context of the reform of transmission and distribution tariff mechanism, the drawbacks of the existing two-part tariff system which cannot reasonably reflect the real cost of electricity consumption by power users have gradually emerged. The two-part tariff mechanism is responsible for allocating the space for electricity generation, transmission, distribution and sale tariffs, and regulating the resources of the power system. Therefore, it is urgent to improve the existing two-part tariff mechanism. This paper, focusing on the two-part tariff mechanism, first, introduces the basic theory and billing ratio of the two-part tariff, and studies the method of apportioning transmission and distribution costs based on different load rates and voltage levels. Then, it summarizes the electricity tariff mechanisms such as load rate packages and time-of-use tariffs and the basic tariff mechanisms such as tariff, load adjustments, and improved billing ratios respectively for the collection methods of two-part tariffs. Afterwards, it analyzes the implementation mode of two-part tariff mechanism theory by combining the practical experience of two-part system in the United States, France, Japan, and other foreign countries. Finally, it proposes the future development direction and suggestions of China’s two-part tariff mechanism.

Key words: two-part tariff, transmission and distribution tariff reform, electricity tariff, basic tariff, billing ratio

CLC Number:

TM727
U491

REN Xijun, SONG Zhumeng, WANG Bao, YE Yutong, PAN Sijia, WANG Mengyuan, XU Xiaoyuan. Application and Prospect of Two-Part Tariff Mechanism in Context of Transmission and Distribution Price Reform[J]. Journal of Shanghai Jiao Tong University, 2024, 58(10): 1479-1488.

Figures/Tables 4

Fig.1

Tab.1

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Fig.2

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用电类别	每月每kV·A 用电	容/需量电价		电度电价/[元·(kW·h)^-1]
用电类别	每月每kV·A 用电	最大需量/ (元·kW^-1·月^-1)	变压器容量/[元· (kV·A)^-1·月^-1]	10 kV 高供低计	10 kV 高供高计	110 kV
普通工商业及其他用电 (100 kV·A及以下和公变接入用电)				0.2385
大量工商业及其他用电 (101~3000 kV·A)	250 kW·h及以下	54	22	0.205 4	0.180 4	0.155 4
大量工商业及其他用电 (101~3000 kV·A)	250 kW·h以上			0.185 4	0.160 4	0.135 4
高需求工商业及其他用电 (101~3000 kV·A)	400 kW·h及以下	42	32	0.155 4	0.130 4	0.105 4
高需求工商业及其他用电 (101~3000 kV·A)	400 kW·h以上			0.135 4	0.110 4	0.085 4

国家	用户类型	电价制度	电压等级	辅助制度
美国	居民用户	两部制	三类等级	峰谷分时、季节性分时、负荷率套餐
	工商业用户	三部制	三部等级
法国	居民用户	两部制蓝色电价	低压	季节性分时、峰谷分时、利用小时数
	农民用户	两部制黄色电价	低压
	工商业用户	两部制绿色电价	中高压
日本	商业用户	两部制	不分等级	季节性电价、分段电价、电费与负荷调整
	中高压各类用户	两部制	中压三类等级、高压五类等级