Energy storage configuration method based on remote area power supply reliability improvement

Abstract

The invention discloses an energy storage configuration method based on remote area power supply reliability improvement, and belongs to the technical field of power supply and energy storage. The method comprises the following steps: firstly, selecting a typical line, and analyzing line geographic position, line length, carried user and load data; listing problems existing in the selected typical line; respectively constructing a conventional solution and an energy storage solution aiming at the problems existing in the typical line; performing technical economic simulation calculation on the conventional solution and the energy storage solution; both conventional solutions and energy storage solutions are qualitatively and quantitatively analyzed in technical and economic aspects. According to the invention, a relatively mature energy storage technology is utilized, the power supply reliability is effectively improved, the cost is reduced, and power failure of a user is reduced; meanwhile, a basic farmland is not occupied, and sustainability and environment friendliness of a project are ensured; the problems of difficulty in project implementation and large investment of a conventional solution at the present stage are solved.

Description

Technical Field

[0001] The present invention relates to the field of power supply and energy storage, and in particular to an energy storage configuration method based on improving power supply reliability in remote areas. Background Art

[0002] Currently, with the increasing demand for electricity, improving power supply reliability has become an urgent issue in remote areas due to harsh geographical conditions and weak medium-voltage grid structures. Traditional solutions are difficult to implement, have poor economic viability, and face regulatory compliance restrictions.

[0003] The existing technical solutions have the following defects:

[0004] 1. The complex geographical conditions in remote areas, such as mountainous areas and deserts, make infrastructure construction difficult and significantly increase transportation and construction costs. It is too expensive to solve the problem of low power supply reliability for users in remote areas by building new lines.

[0005] 2. Due to inconvenient transportation in remote areas, it is difficult for maintenance personnel to reach the site in time to inspect and maintain equipment, which increases operating costs.

[0006] 3. The requirements for farmland protection are becoming increasingly stringent. Under normal circumstances, the occupation of farmland is not allowed. However, a large amount of farmland will be occupied during the line laying process. Summary of the Invention

[0007] Remote areas face harsh geographical conditions, making the construction and upgrading of distribution network infrastructure challenging. Distribution branches are long, and upgrading these branches requires significant investment. In light of this, this paper discloses an energy storage configuration method for improving power supply reliability in remote areas. By selecting typical problem lines and addressing them with both conventional solutions and energy storage solutions, the paper demonstrates the advantages of the energy storage method in improving power supply reliability in remote areas by comparing the energy storage solution with the conventional solution.

[0008] The embodiment of the present invention discloses a method for energy storage configuration based on improving power supply reliability in remote areas, which is characterized by comprising:

[0009] S1. Analyze the current status of power supply: Select typical lines and analyze their geographical location, length, users and load data;

[0010] S2. Problem analysis: List the problems existing in the typical lines and analyze each listed problem independently;

[0011] S3. Solutions: Develop conventional solutions and energy storage solutions for the problems of the typical lines to facilitate technical and economic analysis and comparison.

[0012] S4. Technical and economic simulation analysis and verification of the solution: Perform technical and economic simulation calculations on conventional solutions and energy storage solutions;

[0013] S5. Technical and economic comparison: conducting qualitative and quantitative technical and economic analyses of the conventional solution and the energy storage solution;

[0014] S6. Conclusion: Summarize the advantages of the energy storage solution over the conventional solution and determine the boundary conditions for the application of the energy storage solution.

[0015] Energy storage is a crucial component and key supporting technology for smart grids and the Energy Internet. Distributed energy storage offers plug-and-play functionality and is relatively easy to deploy. Energy storage can improve distribution network reliability by delaying investment in upgrades and renovations, thereby enhancing both the reliability and cost-effectiveness of distribution network operations.

[0016] In a preferred embodiment of the present invention, the geographical location of the typical line includes mountainous areas, deserts, highways, railways and rivers, and the line length is not less than 11 km; a 10kVA line trunk line is used to form two connecting structures with 10kVB line and 10kVC line.

[0017] In a preferred embodiment of the present invention, the conventional solution is to build interconnection lines along conventional feasible paths, adopt two 10kVA line grid optimization projects, and select feasible interconnection points.

[0018] In a preferred embodiment of the present invention, in the conventional solution, a 10kVA line and a 10kVD line are used to establish a connection between the large branch ends; wherein, a cable line solution is used across the highway section and the township road section, and an overhead line solution is used for the remaining channels.

[0019] In a preferred embodiment of the present invention, the energy storage solution is to build an energy storage power station, using lithium iron phosphate batteries; the maximum load is selected as the energy storage power.

[0020] In a preferred embodiment of the present invention, the energy storage capacity is selected based on the comprehensive optimization of reliability and economy as the energy storage capacity calculation.

[0021] In a preferred embodiment of the present invention, in the energy storage solution, the energy storage layout points are selected to design three different configuration points: the beginning, middle and end of the branch line, to form three independent solutions for comparison.

[0022] In a preferred embodiment of the present invention, in the energy storage solution, the energy storage operation control is constructed according to the independent energy storage standard, and the grid-connected and off-grid operation strategy is implemented to absorb photovoltaic power, peak-valley arbitrage, and power auxiliary services.

[0023] In a preferred embodiment of the present invention, in S5, the qualitative analysis includes three aspects: implementation difficulty, line loss, and voltage level; the quantitative analysis includes power supply reliability; and the investment is mainly a static one-time investment.

[0024] In a preferred embodiment of the present invention, in S5, the conclusion includes technical, management and economic aspects.

[0025] Beneficial effects: This invention utilizes relatively mature energy storage technology, effectively improving power supply reliability, reducing costs, and reducing power outages for users; at the same time, it does not occupy basic farmland, ensuring the sustainability and environmental friendliness of the project; and solves the problems of difficult project implementation and large investment in conventional solutions at this stage.

[0026] 1. In emergency situations, such as natural disasters or power grid failures, energy storage systems can serve as a backup power source to provide users with continuous power support;

[0027] 2. The cost of establishing new power lines in remote areas is too high. Improving power supply reliability through energy storage can save investment costs compared with conventional solutions from an economic perspective.

[0028] 3. The energy storage system can stabilize voltage and frequency, reduce the impact of power fluctuations, and increase the life of electrical equipment;

[0029] 4. Through the intervention of the energy storage system, the number and duration of power outages caused by grid failures or maintenance can be effectively reduced, which can improve user satisfaction with electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 Schematic diagram of the implementation process of the energy storage configuration method based on improving power supply reliability in remote areas provided by the embodiment of the present invention;

[0032] Figure 2 A single line diagram of line A provided in an embodiment of the present invention;

[0033] Figure 3 A geographical wiring diagram, a traditional construction plan diagram, and an energy storage plan diagram provided for an embodiment of the present invention;

[0034] Figure 4 A simulation diagram before energy storage connection provided by an embodiment of the present invention;

[0035] Figure 5 This is a simulation diagram after energy storage is connected to the energy storage system according to an embodiment of the present invention;

[0036] Figure 6 A simulation diagram of a traditional solution provided for an embodiment of the present invention;

[0037] Figure 7 A real-life image of the first position of a 10kVA line end provided in an embodiment of the present invention;

[0038] Figure 8 This is a real-life diagram of the second position of the 10kVA line end provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] The technical solutions in the embodiments of the present invention are clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0042] Example

[0043] See also Figures 1-8 , attached Figure 1 This is a schematic diagram of an implementation flow of an energy storage configuration method for improving power supply reliability in remote areas disclosed in an embodiment of the present invention; specifically, the following steps are included:

[0044] Step 1: First, select a typical line and analyze the line's geographical location, line length, users and load data.

[0045] Step 2: List the existing problems of the selected typical lines and analyze each problem independently.

[0046] Step 3: Develop conventional solutions and energy storage solutions for the problems of the typical lines to facilitate technical and economic analysis and comparison.

[0047] Step 4: Perform technical and economic simulation calculations for conventional solutions and energy storage solutions.

[0048] Step 5: Conduct qualitative and quantitative technical and economic analysis of both conventional solutions and energy storage solutions.

[0049] Step 6: Summarize the advantages of the energy storage configuration scheme over the conventional scheme and determine the boundary conditions for the application of the energy storage scheme.

[0050] The invention of this method includes the current status of power supply, problem analysis, solution, technical and economic simulation analysis and verification of the solution, and technical and economic comparison. Its effectiveness and feasibility are verified through detailed technical and economic simulation analysis. This method can not only significantly reduce construction difficulties, but also effectively improve power supply reliability. It provides a new idea and method for improving power supply reliability in remote areas, which has important theoretical significance and practical application value.

[0051] Remote areas face harsh geographical conditions, making the construction and upgrading of distribution network infrastructure challenging. Distribution branches are long, and upgrading these branches requires significant investment. Energy storage is a crucial component and key supporting technology for smart grids and the energy internet. Distributed energy storage offers plug-and-play functionality and is relatively easy to implement. Energy storage can improve distribution network reliability while delaying investment in upgrades, thereby enhancing both the reliability and economic efficiency of distribution network operations. By selecting typical problem lines and addressing them with both conventional and energy storage solutions, and comparing energy storage solutions with conventional solutions, we demonstrate the advantages of energy storage in improving power supply reliability in remote areas.

[0052] Power supply status:

[0053] The 110kV 10kVA line, located in a remote area, has a total length of 30.76 km and a power supply radius of 16.14 km. It is equipped with 55 distribution transformers with a total capacity of 12,640 kVA. The 10kVA main line forms a two-way interconnection with the 10kVB and 10kVC lines. The maximum load factor of the line in 2024 was 22.1%.

[0054] Table 1 Line parameters

[0055]

[0056] Problem Analysis:

[0057] (1) There is no connection at the end of the 10kVA line with a large overhead branch

[0058] like Figure 7 and Figure 8 The 10kVA line's terminal is located between a highway, a railway, and a river. The highway is to the north, the river is to the west, and the railway is to the south. There is no connection after the 264# section switch on the 10kVA line. There are 41 distribution transformers behind the 264# section switch, with a total installed capacity of 4860kVA.

[0059] (2) More than 12 branch line distribution transformers

[0060] Among them, there are 14 10kVA line 296# branch line distribution transformers and 12 298# switch branch line distribution transformers;

[0061] like Figure 2 If the 264# section switch fails, the repair time will be long because the line is located in a remote area. Considering the average fault recovery time of 6 hours, the number of households when the branch line is out of power is 246 (far exceeding the control standard of 150 households during power outage).

[0062] Solution:

[0063] For the convenience of comparison, two different schemes are considered: constructing a conventional feasible path to build an interconnecting line and building an energy storage power station. By analyzing the technical and economic simulation and comprehensive evaluation of the new energy storage scheme for this scenario, the feasibility and feasible boundary conditions are determined, providing a scientific analysis method for subsequent solutions to similar problems.

[0064] Based on the problem of no connection in the large branches of the 10kVA line, the conventional solution is to create a new connection at the end of the large branch and adjust the operation mode. The energy storage solution configures energy storage equipment to connect to the large branch of the line, which serves as the power supply point in the event of a large branch failure, ensuring safe and reliable power supply for the large branch.

[0065] (1) Conventional solutions

[0066] 10kVA line and other 2 line grid optimization projects

[0067] 1) Selection of feasible contact points:

[0068] The lines surrounding the 10kVA line include the 10kVD line, 10kVC line, and 10kVB line.

[0069] The 10kVA line and the 10kVC line are installed on the same pole, the 10kVB line is connected to too many distribution transformers, the power supply reliability is poor, and the 10kVB line 249# branch line is connected to the 10kVA line at the front end. Taking all the above factors into consideration, the surrounding area can only be connected through the 10kVD line and the end below the 10kVA line 264# section.

[0070] 2) Construction scheme design:

[0071] like Figure 3 The 10kVA line and the 10kVD line are connected at the end of a large branch. The cable line solution is used for the section across the highway and the township road section, and the overhead line solution is used for the remaining channels.

[0072] 3) Construction scale and investment

[0073] 6.34km of JKLYJ-10 / 240 overhead lines, 1.1km of YJV22-3*400 cable lines, 3 pole-mounted switches, and approximately 1.1km of civil engineering were newly built, with a total project investment of approximately RMB 7.662 million.

[0074] Table 2 Traditional Investment Table

[0075]

[0076] (2) Energy storage solutions

[0077] 1) Energy storage technology route selection

[0078] Based on the applicable scenarios of the main energy storage technology routes and the technical characteristics of energy storage itself, combined with domestic and international practices, this project selects lithium iron phosphate batteries, container layout, and single cell capacity selection according to Table 4.

[0079] 2) The main operating parameters and construction costs shall be designed according to Table 3.

[0080] 3) Construction plan design

[0081] ①Energy storage power design

[0082] There are generally two methods for selecting energy storage power: one is calculated based on the maximum load, and the other is calculated based on the average load. Considering the replacement line N-1 in this analysis, with safety and supply as the primary condition, the maximum load is selected as the energy storage power.

[0083] In 2023, the maximum load of the 264# pole switch of the 10kVA line is 779.05kW, the maximum load of the 298# pole switch is 244.56kW, and the maximum load of the 296# pole switch is 534.49kW.

[0084] According to the branch switch failure situation, the branch load needs to be transferred and measured. The 10kVA line 298# pole switch branch needs to be configured with an energy storage power of 250kW, and the 10kVA line 296# branch switch branch needs to be configured with an energy storage power of 600kW.

[0085] ②Energy storage capacity calculation

[0086] Energy storage capacity is generally calculated using two methods: one that optimizes reliability by multiplying the maximum load by the mean duration of a fault; and the other that optimizes both reliability and economics by calculating the energy storage capacity based on the average load. This time, we chose to optimize both reliability and economics for energy storage capacity.

[0087] According to the distribution network automation system, the average load on the 264# switch on the 10kVA line in 2023 was 692.6kW, the average load on the 298# switch was 212.1kW, and the average load on the 296# switch was 480.5kW. Considering a fault in the upstream section of the 264# switch on the 10kVA line, the 264# branch lost its power supply. Based on the distribution network's six-hour emergency repair time, which includes one hour for fault location and isolation, four hours for emergency repair, and one hour for fault line restoration, priority was given to restoring power to non-faulty sections during the emergency repair period. In this case, energy storage at the end of the large branch was configured for four hours, representing long-term energy storage.

[0088] The energy storage capacity requirements for the 10kVA line 298# pole switch branch and 296# branch switch are 848.4kWh and 1922kWh, respectively. This time, 900kWh and 2000kWh are selected as the final energy storage capacity requirements.

[0089] ③Layout point selection

[0090] Design three different configuration points for the branch line: the beginning, middle and end, to form three independent schemes for comparison.

[0091] ④Operation control strategy

[0092] This plan supports on-grid and off-grid operation strategies. In the later stage, it will consider profits from off-peak photovoltaic consumption, peak-valley arbitrage, and power auxiliary services. It is recommended to build it according to independent energy storage standards.

[0093] 4) Energy storage specifications and investment

[0094] In this solution, a 250kW / 900kWh energy storage unit is configured at the branch end of the 298# pole switch of the 10kVA line, and a 600kW / 2000kWh energy storage unit is configured at the branch end of the 296# pole switch.

[0095] The 298# pole switch branch is equipped with a 20-foot container, covering an area of ​​approximately 15m2. The 296# pole switch branch is equipped with a 40-foot container, covering an area of ​​approximately 30m2.

[0096] Based on the current average cost of electrochemical energy storage (lithium iron phosphate) of 1.1 yuan / kWh, the one-time investment in energy storage is 3.19 million yuan.

[0097] Table 3 Energy storage solutions

[0098]

[0099] Technical and economic simulation analysis of the scheme:

[0100] (1) Using the "Time-Sequential Active Distribution Network Intelligent Decision-Making Platform" to complete traditional solutions and energy storage solutions:

[0101] 1) Time series power flow analysis to verify whether the technical indicators of the solution meet the requirements of the guidelines;

[0102] 2) Reliability analysis: calculate reliability indicators, verify the reliability improvement of the two solutions, and provide indicators for evaluation;

[0103] (2) The calculation parameters and boundaries are in accordance with the main boundary conditions below.

[0104] Simulation results show that after energy storage is connected, the voltage at each node meets the requirements under different connection methods. The following patterns indicate that, first, the power supply voltage and reliability are higher after energy storage is connected than before; second, the power supply reliability at the end of the energy storage connection is higher than in the middle and front sections, but the corresponding line losses are also higher.

[0105] Table 4 Simulation results of each node

[0106]

[0107] Technical and economic comparison:

[0108] The technical and economic comparison between traditional methods and energy storage construction solutions is divided into qualitative and quantitative parts.

[0109] (1) Qualitative evaluation

[0110] The qualitative evaluation is based on three aspects: implementation difficulty, line loss, and voltage level. The results of the qualitative evaluation show that the energy storage solution is superior to the traditional solution.

[0111]

[0112] (2) Quantitative evaluation

[0113] The technical indicators mainly focus on power supply reliability, and the investment mainly focuses on static primary investment indicators.

[0114] Table 5 Economic and technical comparison table

[0115]

[0116] (3) Sensitivity analysis

[0117] 1) Sensitivity analysis of newly built overhead lines

[0118] Boundary conditions: 1. The energy storage device uses lithium-ion equipment. 2. The required length of the overhead line is calculated based on a cost of 300,000 yuan / km.

[0119] Based on the different capacity specifications and price ranges of energy storage, the analysis in the table below shows that, under the same energy storage capacity, the length and price of newly built overhead lines in the conventional plan maintain an upward trend. Based on the 1.1 yuan / kWh price and 2900kWh capacity of this energy storage system, the feasibility of constructing energy storage requires a new purely overhead line length exceeding 10.63 kilometers. If some sections of the road cross the highway and the overhead line needs to be buried underground, energy storage with a length shorter than the above is more feasible.

[0120] Table 6 Sensitivity analysis of energy storage capacity, energy storage unit price and length of new overhead lines

[0121]

[0122] 2) Full life cycle analysis

[0123] Boundary conditions: 1. Electrical equipment is considered old after 30 years; 2. Energy storage batteries are considered to have decayed and need to be replaced every 10 years; 3. Changes in bank lending rates are not considered;

[0124] Assuming this energy storage solution costs 7.662 million yuan, with an investment of approximately 2.554 million yuan every 10 years, and a unit price of less than 0.8807 yuan / kWh, the energy storage solution offers a more economical advantage compared to the full lifecycle cost of conventional solutions. The economic indicators are compared below.

[0125] Table 7 Energy storage economic budget

[0126]

[0127]

[0128] in conclusion:

[0129] (1) Comparison between this energy storage configuration plan and conventional plans

[0130] 1) Technically, if a fault occurs at the front end of the 264# branch of the 10kVA line, the energy storage solution, compared to establishing a connection at the end, can reduce the overall number of households from 246 to 82, effectively reducing the number of households during a line outage by 80%. However, conventional solutions generally only have one connection point at the end. This energy storage solution can deploy two energy storage devices at the end of the 264# branch, at the end of poles 296# and 298#. This not only improves power supply reliability compared to conventional solutions, but also solves the problem of power outages with more than 12 households.

[0131] 2) In terms of management, the conventional solution is difficult to implement due to the problem of building new channels for the lines. The new cross-highway connecting channel solution is difficult to realize. In addition, the conventional solution project approval cycle and the design plan adjustment in the project approval process have a long overall construction cycle for the conventional solution, and it is impossible to quickly achieve safe and reliable power supply for the power grid.

[0132] 3) In terms of economy, considering the entire life cycle of the conventional solution and the energy storage solution, the conventional solution is more economical when compared with the energy storage solution during the same period. However, as the price of energy storage systems continues to decrease, it is expected that the energy storage price will be lower than 0.8807 yuan / kWh. Compared with the full life cycle cost of the conventional solution, the energy storage solution will have more economic advantages.

[0133] This energy storage solution is superior to conventional solutions in terms of technology and management methods, and its economic efficiency is better than that of conventional solutions in terms of the last investment. However, considering the entire life cycle, the current energy storage solution is not economically efficient. However, if the price of energy storage continues to fall in the future, its economic efficiency will be better than that of conventional solutions.

[0134] (2) It is recommended that for similar scenarios in remote areas where there is no connection between lines, when the newly built overhead line exceeds 11 kilometers and the energy storage capacity is 3000kWh, the energy storage solution should adopt the following method:

[0135] 1) Lithium-ion battery technology route;

[0136] 2) Energy storage should be arranged at the end of the line branch;

[0137] 3) Energy storage power should be calculated based on the maximum load of the branch, taking into account power supply security. Energy storage capacity should be calculated based on the average load, taking into account the economy and safety.

[0138] 4) The energy storage cabinet adopts prefabricated cabin layout to save construction space.

[0139] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

Claims

1. A method for energy storage configuration based on improving power supply reliability in remote areas, characterized in that: include: S1. Analyze the current status of power supply: Select typical lines and analyze their geographical location, length, users and load data; S2. Problem analysis: List the problems existing in the typical lines and analyze each listed problem independently; S3. Solutions: Develop conventional solutions and energy storage solutions for the problems of the typical lines to facilitate technical and economic analysis and comparison. S4. Technical and economic simulation analysis and verification of the solution: Perform technical and economic simulation calculations on conventional solutions and energy storage solutions; S5. Technical and economic comparison: conducting qualitative and quantitative technical and economic analyses of the conventional solution and the energy storage solution; S6. Conclusion: Summarize the advantages of the energy storage solution over the conventional solution and determine the boundary conditions for the application of the energy storage solution.

2. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1 is characterized in that: The geographical location of the typical line includes mountainous areas, deserts, highways, railways and rivers, and the line length is not less than 11 km; a 10kVA line trunk line is used to form two interconnected structures with 10kVB lines and 10kVC lines.

3. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1, characterized in that: The conventional solution is to build interconnection lines along conventional feasible paths, adopt two 10kVA line grid optimization projects, and select feasible interconnection points.

4. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1 is characterized in that: In the conventional solution, 10kVA lines and 10kVD lines are used to establish connections at the ends of large branches; among them, cable lines are used across highway sections and township road sections, and overhead lines are used for the remaining channels.

5. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1 is characterized in that: The energy storage solution is to build an energy storage power station and use lithium iron phosphate batteries; the maximum load is selected as the energy storage power.

6. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1, characterized in that: The energy storage capacity is selected based on the optimal combination of reliability and economy.

7. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1, characterized in that: In the energy storage solution, the energy storage layout points are selected to design three different configuration points: the beginning, middle and end of the branch line, forming three independent solutions for comparison.

8. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1 is characterized in that: In the energy storage solution, energy storage operation control is constructed according to independent energy storage standards, implementing on-grid and off-grid operation strategies, accommodating photovoltaic power generation, peak-valley arbitrage, and power auxiliary services.

9. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1, characterized in that: In S5, the qualitative analysis includes three aspects: implementation difficulty, line loss, and voltage level. The quantitative analysis includes power supply reliability. The investment is mainly static one-time investment.

10. The energy storage configuration method based on improving power supply reliability in remote areas according to claim 1, characterized in that: In S5, the conclusion includes technical aspects, management aspects and economic aspects.

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