A method for determining the energy storage demand and energy storage duration of a high-proportion new energy system
A system energy storage and determination method technology, which is applied in the fields of energy storage demand and energy storage duration determination of high-proportion new energy systems
Active Publication Date: 2022-04-01
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 present invention proposes a method for determining the energy storage demand and energy storage duration of a high-proportion new energy system, including: 1) performing production simulation without energy storage power stations, and counting thermal power coal consumption and thermal power installed capacity requirements; 2) specifying energy storage capacity series, energy storage duration series; 3) Calculate the energy storage scenario {P ESS,i , T j} The net benefit F i j ; 4) Calculate the energy storage scenario {P ESS,i , T j+1} The net benefit F i j+1 ; 5) If F i j+1 >F i j , indicating that the net income of the system increases after the energy storage time increases; otherwise, the energy storage capacity P ESS,i The optimal energy storage time under is T j ; 6) Repeat the above steps to calculate a series of energy storage capacities {P ESS,i} The optimal energy storage duration T j and its net benefits {F i j}, {F i j} The energy storage capacity and energy storage duration corresponding to the maximum value in} are the optimal energy storage configuration scheme. Using this method, the maximum benefit of energy storage can be used as the goal, and the energy storage capacity requirements and energy storage time of high-proportion new energy systems can be determined, and the benefits and costs of energy storage power stations 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