Method for determining energy storage demand and energy storage duration of high-proportion new energy system
A technology for system energy storage and determination method, which is applied in the field of energy storage demand and energy storage duration determination of high-proportion new energy systems
Active Publication Date: 2020-07-14
NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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[0003] In order to solve the problem of comprehensive evaluation of energy storage in the prior art, the present invention proposes a method for determining the energy storage demand and energy storage duration of a high-proportion new energy system
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[0091] The method for determining the energy storage demand and energy storage duration of the high-proportion new energy system of the present invention, the specific steps are as follows:
[0092] (1) Read in information such as power supply planning, load forecasting, new energy power generation, daily load characteristic curve, annual load characteristic curve, energy storage cost and technical parameters of each province. Considering the change of energy storage construction cost, analyze two scenarios, as shown in Table 1 and Table 2.
[0093] Table 1 Economic measurement indicators (case 1)
[0094]
[0095] Table 2 Economic measurement indicators (case 2)
[0096]
[0097]
[0098] (2) Carry out 8760 hours of production simulation throughout the year, and calculate the energy storage revenue under different energy storage capacities and durations. The calculation results are shown in Table 3.
[0099]It can be seen that the installation of 300-1200MW battery...
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The invention provides a method for determining the energy storage demand and the energy storage duration of a high-proportion new energy system. The method comprises the steps that: 1) production simulation without an energy storage power station is carried out, and thermal power coal consumption and thermal power installation demands is put into statistics; 2) an energy storage capacity series and an energy storage duration series are given; 3) the net benefits Fij of energy storage scenes {PESS, i, Tj} are calculated; 4) the net benefits Fij+1 of energy storage scenes {PESS, i, Tj+1} are calculated; 5) if Fij+1>Fij, it is indicated that the net incomes of the system are increased after an energy storage duration is increased, otherwise, an optimal energy storage duration under an energystorage capacity PESS,i is Tj; and 6) the above steps are repeated, and an optimal energy storage duration Tj under a series of energy storage capacities {PESS, i} and the net benefits {Fij} thereofare calculated, wherein an energy storage capacity and an energy storage duration corresponding to the maximum value in the {Fij} are an optimal energy storage configuration scheme. With the method adopted, with maximum energy storage benefits taken as a target, the energy storage capacity demand and the energy storage duration of the high-proportion new energy system are determined, and the benefits and the cost of an energy storage power station can be comprehensively evaluated.
Description
technical field [0001] The invention relates to the field of power system planning and operation scheduling, in particular to a method for determining the energy storage demand and energy storage duration of a high-proportion new energy system. Background technique [0002] With the large-scale grid-connection of wind power, photovoltaic and other new energy power generation, the problem of new energy curtailment has increasingly become a problem for new energy grid-connection, and the use of energy storage to improve the new energy acceptance capacity of the grid has become a research hotspot. How to evaluate the role of energy storage in the system, and make reasonable economic evaluation and compensation for energy storage are the key factors for the large-scale development and survival of energy storage. With the goal of maximizing energy storage benefits, an optimization method for energy storage capacity requirements and energy storage duration of high-proportion new e...
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IPC IPC(8): H02J3/38H02J3/46H02J3/28
CPCH02J3/46H02J3/28
Inventor 傅旭李富春张雨津孙沛杨欣许美朋
Owner NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP