Method and system for measuring and calculating reasonable energy storage scale matched with new energy power station of power system

A power system and new energy technology, which is applied in the field of reasonable scale calculation of energy storage supporting new energy power stations in the power system, can solve the problems of lack of reasonable energy storage ratio, difficulty in maximizing the benefits of the power station, etc., and achieve the effect of realizing the benefits of the power station.

Pending Publication Date: 2022-03-04
ECONOMIC RES INST OF STATE GRID GANSU ELECTRIC POWER +1
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Problems solved by technology

However, new energy power stations usually think that the configuration of energy storage will only increase the construction cost, so they will directly configure energy storage according to the minimum level suggested by the plan. Without the calculation of a reasonable energy storage ratio, it is difficult to maximize the self-interest of the power station

Method used

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  • Method and system for measuring and calculating reasonable energy storage scale matched with new energy power station of power system
  • Method and system for measuring and calculating reasonable energy storage scale matched with new energy power station of power system
  • Method and system for measuring and calculating reasonable energy storage scale matched with new energy power station of power system

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Embodiment approach

[0043] A method for measuring and calculating a reasonable scale of supporting energy storage for a new energy power station in a power system according to the present invention comprises the following steps:

[0044] S1, collect the forecast data of the target power system within the design level year, conduct hour-level production simulation of the target power system with the lowest operating cost as the objective function, and measure the total annual power generation of new energy and energy storage consumption of the target power system;

[0045]S2, collect the data of incremental new energy power supply, and conduct production simulation on the target power system including incremental new energy power station, measure and calculate the total new energy annual power generation and energy storage consumption of the target power system, and calculate the incremental new energy power station The real cost of electricity;

[0046] S3, given the energy storage scale of the u...

Embodiment

[0060] In a certain province, by the end of 2020, the planned installed capacity of new energy is 23.39 million kilowatts, and the planned new installed capacity of new energy is 44.29 million kilowatts (including 23.16 million kilowatts of wind power and 21.13 million kilowatts of photovoltaic power). Less than 10% of the installed capacity of new energy, the reasonable scale of supporting energy storage for the incremental 44.29 million kilowatts of new energy power stations is calculated by this method.

[0061] The specific operation steps of this method are as follows:

[0062] (1) Collect data such as the annual load of the province's power system in 2025 for 8760 hours, the annual 8760-hour area transmission and reception curve, the annual 8760-hour stock new energy power station output characteristics, and the output characteristics of hydropower, thermal power and other power sources. The province's power system conducts an hour-level production simulation with the lo...

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Abstract

The invention discloses a power system new energy power station matched energy storage reasonable scale calculation method and system, and the method comprises the steps: carrying out the hour-level production simulation with the lowest operation cost as an objective function for a target power system, and calculating the total new energy annual energy output and energy storage power consumption of the target power system; carrying out production simulation on the target power system comprising the incremental new energy power station, measuring and calculating the total new energy annual energy output and the energy storage loss power consumption of the target power system, and calculating the true cost per kilowatt-hour of the incremental new energy power station; a unit energy storage scale is given, annual cost converted by total investment and operation maintenance cost is calculated, and different energy storage scale sequences are obtained through sorting from small to large; and performing production simulation on the power systems under different energy storage scales contained in the energy storage scale sequence, calculating the energy storage cost per kilowatt-hour of the increment new energy power station one by one, and comparing to obtain the optimal matched energy storage scale. The method can help the increment new energy power station to measure the reasonable scale of matched energy storage, and achieves the maximization of the income of the power station.

Description

technical field [0001] The invention relates to the field of power system planning, in particular to a method and system for measuring and calculating a reasonable scale of supporting energy storage for a new energy power station in a power system. Background technique [0002] The current power system planning will suggest that incremental new energy power stations be bundled with a certain scale of energy storage power. However, new energy power plants generally believe that the configuration of energy storage will only increase the construction cost, so they will directly configure energy storage according to the minimum level suggested by the plan. Without the calculation of a reasonable energy storage ratio, it is difficult to maximize the self-interest of the power station. Proposing a method to determine a reasonable scale of supporting energy storage for new energy power stations is of great significance for improving the profitability of new energy power stations, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28H02J3/38
CPCH02J3/004H02J3/28H02J3/38H02J2203/20H02J2300/20
Inventor 徐敏张雨津范雪峰李万伟尹立夫张中丹余志刚李丁陆军吕金历冯智慧田云飞张军杨昌海白望望孙沛傅旭王昭李富春许美朋
Owner ECONOMIC RES INST OF STATE GRID GANSU ELECTRIC POWER
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