Two-part tariff for pumped storage power plants in an integrated intelligent energy system

doi:10.3969/j.issn.2097-0706.2022.07.002

Abstract

Abstract:

As the most mature form of energy storage, pumped storage will be an important supportive technique for integrated intelligent energy systems to achieve carbon peaking and carbon neutrality. But the development of the technique is hampered by the lack of a proper pricing strategy. In response to this problem, the two-part tariff strategy for pumped storage power plants which operate in corporation with an integrated intelligent energy system is proposed. According to the operation pricing strategy, the tariff is determined by the capacity of a pumped storage power plant. In view of the economic advantages of "pumped storage + renewable energy", an optimal dispatch model for the combination of pumped storage and wind power is established. Taking the reduction of total cost and pumped storage cost of the combined system as the objective functions, a rational pumping strategy for the installed pumped storage power plant is carried out. And the tariffs in water pumping stage and in power generation stage of the power plant are figured out according to the relationship of demand and price and variable cost compensation principle, respectively. The effect of integrating a pumped storage power plant in an integrated intelligent system on the low-carbon operation and electric price of the combined system is verified by a case, which proves the effectiveness of the two-part tariff strategy of pumped storage power plants.

Key words: carbon neutrality, pumped storage power plant, integrated intelligent energy, renewable energy, two-part tariffs, wind power consumption, low -carbon operation

CLC Number:

TK019：TK02

LI Hua, ZHENG Hongwei, ZHOU Bowen, LI Guangdi, YANG Bo. Two-part tariff for pumped storage power plants in an integrated intelligent energy system[J]. Integrated Intelligent Energy, 2022, 44(7): 10-18.

Figures/Tables 8

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Table 1

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时段	抽水成本/万元	电价/[元·(MW·h)^-1]
时段	抽水成本/万元	电量电价	容量电价
00:00—01:00	5.74	462.81	146.83
01:00—02:00	12.39	445.94
02:00—03:00	11.91	428.73
03:00—04:00	11.54	415.36
04:00—05:00	11.95	430.12
05:00—06:00	11.87	427.33
06:00—07:00	12.22	439.97
07:00—08:00	—	466.75
08:00—09:00	12.49	631.88
09:00—10:00	—	649.14
10:00—11:00	—	605.40
11:00—12:00	—	487.90
12:00—13:00	—	491.37
13:00—14:00	7.96	540.79
14:00—15:00	11.18	624.76
15:00—16:00	—	650.30
16:00—17:00	—	644.39
17:00—18:00	—	713.29
18:00—19:00	—	783.35
19:00—20:00	—	769.25
20:00—21:00	—	706.03
21:00—22:00	—	653.93
22:00—23:00	—	617.25
23:00—24:00	—	508.82

算例场景	抽水蓄能机组	风电机组	火电机组（负荷率）	两部制电价来源
1	×	√	√（100%）	—
2	√	×	√（100%）	抽水蓄能
3	√	√	√（100%）	抽水蓄能+风电
4	√	√	√（80%）	抽水蓄能+风电