CN114069671A - High-proportion new energy power grid energy storage demand analysis method considering consumption level - Google Patents
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Abstract
The invention belongs to the technical field of new energy planning, and relates to a high-proportion new energy power grid energy storage demand analysis method considering new energy consumption capacity improvement, which is applied to planning and designing of a multi-side energy storage power station by a power department. The method comprises the following steps: determining the power grid energy storage capacity P after the energy storage is increased, analyzing power grid planning, power supply planning boundary and maximum load prediction and determining the AC/DC delivery capacity according to the power grid operation, and solving the new energy consumption capacity f of the power grid based on time sequence production simulation; and finally obtaining the new energy consumption capability f. According to the method, the consumption capacity of the high-proportion new energy power grid is analyzed by a time sequence production simulation method, the energy storage demand analysis of the high-proportion new energy power grid considering the consumption level is realized, and an energy storage demand planning suggestion is provided from the new energy consumption perspective.
Description
Technical Field
The invention belongs to the technical field of new energy planning, and relates to a high-proportion new energy power grid energy storage demand analysis method considering new energy consumption capacity improvement, which is applied to planning and designing of a multi-side energy storage power station by a power department.
Background
The power is a complex system which needs to maintain real-time balance, and source network loads need to be matched with each other to maintain the stability of a power grid together. The new energy power supply has strong fluctuation and randomness, large-scale new energy grid connection and installation occupation ratio are improved, and the safety and stability of the power system are seriously threatened. Energy storage is an important component for building a novel power system as an effective means for solving the problem of new energy. The energy storage industry and the energy storage technology cover various aspects such as a power supply side, a power grid side, a user side, a social functional energy storage facility and the like, and are core supports for constructing a novel power system with new energy as a main body and realizing high-quality development of energy.
The new energy installation machine is rapidly increased under the construction background of a novel power system, so that large-scale energy storage application is developed, the problem of safety and stability caused by ultrahigh-proportion new energy grid connection is solved, and large-scale new energy grid connection and efficient consumption are facilitated.
At present, the new energy planning scale is large, the consumption capacity is restricted, the energy storage needs to be vigorously developed, the energy storage at the load side of the power assisting source network is integrally developed, and the consumption capacity of a high-proportion new energy power network is improved.
Disclosure of Invention
The invention aims to provide a high-proportion new energy power grid energy storage demand calculation method considering a consumption level, aiming at the problem of low consumption capacity of a large-scale new energy power station after grid connection, energy storage demand analysis considering consumption capacity improvement is developed, and the high-proportion new energy power grid energy storage demand analysis considering the consumption level is realized by analyzing the consumption capacity of the high-proportion new energy power grid by a time sequence production simulation method based on information such as energy storage capacity, power supply power grid planning boundary, maximum load prediction and load characteristics.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-proportion new energy power grid energy storage demand calculation method considering a consumption level comprises the following steps:
s1, determining the energy storage capacity P of the power grid after the energy storage is increased;
s2, analyzing power grid planning, power supply planning boundary and maximum load prediction according to power grid operation and determining alternating current/direct current delivery capacity;
s3, obtaining related data according to the step S2, and solving the new energy consumption capability f of the power grid based on time sequence production simulation;
and S4, judging to obtain the new energy consumption capability f of the S3.
Further, in step S1, it is first determined that the energy storage capacity P0 currently owned by the grid is present, and if the energy storage capacity increased each time when the absorption capacity is less than 95% is determined to be Δ P, the grid energy storage capacity after the energy storage increase is P0+ Δ P.
Further, in step S2, a new energy output curve is predicted according to analysis of new energy output characteristics and resource characteristics in the power grid region; determining conventional power supply constraints of a power grid according to power supply planning boundary conditions; and determining the power grid energy storage output constraint according to the existing power grid energy storage capacity.
Further, in step S2, the maximum load characteristic prediction is analyzed, and the grid load curve prediction is determined according to the maximum load prediction and the load characteristic.
Further, in step S2, the power grid partition, the tie line quota curve, and the delivery curve are determined according to the power grid planning boundary, the delivery plan, and the power grid operating characteristics.
Further, the relevant data in step S3 includes power supply planning boundary, power grid energy storage output constraint, power grid load curve and tie line quota curve data.
Further, in step S4, the method for determining the new energy absorption capacity f includes: firstly, judging whether the new energy consumption capability f is greater than 95%, if so, determining that the current power grid configuration capacity is the minimum energy storage capacity requirement that the high-proportion new energy power grid consumption capability reaches 95%; if not, returning to the first step, and urgently carrying out circular calculation until the high-proportion new energy power grid absorption capacity reaches 95%.
In summary, due to the adoption of the technical scheme, the beneficial technical effects of the invention are as follows:
aiming at the problem of low consumption capability of a large-scale new energy power station after grid connection, the invention develops energy storage demand analysis considering consumption capability improvement, analyzes the consumption capability of a high-proportion new energy power grid by a time sequence production simulation method based on information such as energy storage capacity, power supply and power grid planning boundary, maximum load prediction and load characteristic, realizes energy storage demand analysis of the high-proportion new energy power grid considering the consumption level, and provides an energy storage demand planning suggestion from the new energy consumption perspective.
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Fig. 1 is a flow chart of a high-proportion new energy grid energy storage demand analysis considering a consumption level.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A high-proportion new energy power grid energy storage demand calculation method considering a consumption level comprises the following steps:
s1, determining the energy storage capacity P of the power grid after the energy storage is increased; firstly, determining the energy storage capacity P0 currently owned by the power grid, and determining that the energy storage capacity increased every time is delta P when the absorption capacity is less than 95%, wherein the energy storage capacity of the power grid after energy storage increase is P0+ delta P;
s2, analyzing power grid planning, power supply planning boundary and maximum load prediction according to power grid operation and determining alternating current/direct current delivery capacity; in step S2, new energy output curve prediction is performed according to analysis of new energy output characteristics and resource characteristics in the power grid region; determining conventional power supply constraints of a power grid according to power supply planning boundary conditions; determining power grid energy storage output constraints according to the existing power grid energy storage capacity; in step S2, analyzing the prediction of the maximum load characteristic, and determining a prediction of a power grid load curve according to the maximum load prediction and the load characteristic; in the step S2, according to the power grid planning boundary, the outgoing plan and the power grid operating characteristics, determining a power grid partition, a tie line quota curve and an outgoing curve;
s3, obtaining related data according to the step S2, and solving the new energy consumption capability f of the power grid based on time sequence production simulation; the related data in the step S3 includes power supply planning boundary, power grid energy storage output constraint, power grid load curve and tie line quota curve data;
s4, judging to obtain the new energy consumption capability f of S3; the method for judging the new energy consumption capacity f comprises the following steps: firstly, judging whether the new energy consumption capability f is greater than 95%, if so, determining that the current power grid configuration capacity is the minimum energy storage capacity requirement that the high-proportion new energy power grid consumption capability reaches 95%; if not, returning to the first step, and urgently carrying out circular calculation until the high-proportion new energy power grid absorption capacity reaches 95%.
Selecting a fourteen-five power planning boundary of a certain province in China, and analyzing the energy storage demand of the high-proportion new energy power grid considering the improvement of the new energy consumption capacity by using the analysis method for analyzing the energy storage decentralized configuration condition in different regions based on the analysis of the power supply, the power grid planning boundary and the maximum load prediction condition in 2022 years.
When the energy storage capacity of the power grid is 6 kilowatt/24 kilowatt hour, the energy storage capacity delta P increased every time when the absorption capacity is less than 95% is 10 kilowatt/20 kilowatt hour, and analysis shows that the new energy absorption capacity of the power grid 2022 is lower than 95% and is only 86.3% when the energy storage is not configured under the current energy storage configuration; through the energy storage configuration under the method, when 800 kilowatts/1600 kilowatt-hours of energy storage is configured in the power grid 2022, the new energy consumption capacity of the power grid 2022 reaches 95%.
The above description is not intended to limit the present invention, but rather, the present invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.
Claims (7)
1. A high-proportion new energy power grid energy storage demand calculation method considering a consumption level is characterized by comprising the following steps of: the method comprises the following steps:
s1, determining the energy storage capacity P of the power grid after the energy storage is increased;
s2, analyzing power grid planning, power supply planning boundary and maximum load prediction according to power grid operation and determining alternating current/direct current delivery capacity;
s3, obtaining related data according to the step S2, and solving the new energy consumption capability f of the power grid based on time sequence production simulation;
and S4, judging to obtain the new energy consumption capability f of the S3.
2. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: in step S1, it is first determined that the energy storage capacity P0 currently owned by the power grid is present, and if the energy storage capacity increased each time when the absorption capacity is less than 95% is determined to be Δ P, the energy storage capacity of the power grid after energy storage increase is P0+ Δ P.
3. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: in step S2, new energy output curve prediction is performed according to analysis of new energy output characteristics and resource characteristics in the power grid region; determining conventional power supply constraints of a power grid according to power supply planning boundary conditions; and determining the power grid energy storage output constraint according to the existing power grid energy storage capacity.
4. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: in step S2, the maximum load characteristic prediction is analyzed, and a power grid load curve prediction is determined based on the maximum load prediction and the load characteristic.
5. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: in step S2, the power grid partition, the tie line quota curve, and the delivery curve are determined according to the power grid planning boundary, the delivery plan, and the power grid operating characteristics.
6. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: the related data in the step S3 includes power supply planning boundary, power grid energy storage output constraint, power grid load curve, and tie line quota curve data.
7. The method for calculating the energy storage demand of the high-proportion new energy power grid considering the consumption level according to claim 1, wherein the method comprises the following steps: the method for judging the new energy consumption capacity f comprises the following steps: firstly, judging whether the new energy consumption capability f is greater than 95%, if so, determining that the current power grid configuration capacity is the minimum energy storage capacity requirement that the high-proportion new energy power grid consumption capability reaches 95%; if not, returning to the first step, and urgently carrying out circular calculation until the high-proportion new energy power grid absorption capacity reaches 95%.
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Application publication date: 20220218 |