A kind of energy storage type public auxiliary energy station

Abstract

The utility model discloses an energy storage type public auxiliary energy station, including a power supply module of a power grid, an energy storage box, an electric control module, an automatic control module, and more than two energy station systems; the electric control module includes a main energy storage supply circuit and a main power grid supply circuit and a branch power supply branch arranged in parallel, the output ends of the main energy storage supply circuit and the main power grid supply circuit are electrically connected to the input end of the branch power supply branch; the output end of the branch power supply branch is electrically connected to the energy station system; the main energy storage supply circuit and the main power grid supply circuit are both electrically connected to the power supply module of the power grid, and the main energy storage supply circuit and the main power grid supply circuit are both provided with switches, and the switches are used to control the conduction and disconnection of the main energy storage supply circuit, the main power grid supply circuit and the power supply module of the power grid, and the conduction and disconnection between the main energy storage supply circuit, the main power grid supply circuit and the branch power supply branch. This scheme effectively improves the power supply continuity and safety of the public auxiliary energy station.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial control, and specifically refers to an energy storage type public auxiliary energy station. Background Art

[0002] Public auxiliary energy station, full name is public auxiliary energy station, is the core link in providing comprehensive energy support for various production facilities and buildings in industries or parks. Such energy stations usually integrate multiple energy supply functions, including but not limited to the production and distribution of multiple energy media such as electricity, steam, hot water, cold water, compressed air, natural gas, etc., aiming to efficiently and stably meet the diverse energy needs of different users in the region.

[0003] The air compressor station is mainly responsible for providing compressed air, which is an indispensable power source in industrial processes; the oxygen-rich gas station and the nitrogen-rich gas station provide high-concentration oxygen and nitrogen respectively, which are widely used in cement, steel, glass and other enterprises; the refrigeration station is mainly responsible for providing refrigeration services for enterprises; the circulating water pump station is responsible for the water circulation of the entire enterprise, cooling the process and equipment for each production link. Therefore, as the energy supply center within the enterprise, the public auxiliary energy station is of great significance to ensure the normal production of the enterprise and improve the efficiency of energy utilization.

[0004] In traditional energy management systems, the common practice is to directly connect a specific type of energy station to an energy storage device to supply power. However, this configuration has obvious limitations, as the efficiency of energy stations is often restricted by multiple factors such as seasonal temperature and actual demand fluctuations. When an energy station is temporarily shut down due to a fault or maintenance need, the traditional practice is to feed the remaining power in the energy storage device back to the grid, but this grid connection process is very likely to cause surge currents, which may not only cause fluctuations in grid voltage, but also pose a threat to equipment stability and even bring potential safety risks. At the same time, due to internal efficiency limitations, energy storage devices cannot achieve complete conversion of electrical energy during the charge and discharge cycle, so there is inevitable energy loss. Summary of the invention

[0005] In order to solve at least one of the above technical problems, the utility model provides an energy storage type public auxiliary energy station, which improves the energy utilization efficiency and the safety of the energy station system operation by optimizing the design of the electrical part of the energy station. The energy storage type public auxiliary energy station includes a power supply module of the power grid, an energy storage box, a public auxiliary energy station, an electric control module and an automatic control module. The public auxiliary energy station includes more than two energy station systems; the power input end of the energy station system is electrically connected to the electric control module respectively;

[0006] The electric control module includes a main energy storage supply circuit and a main power grid supply circuit arranged in parallel, and a sub-power supply branch, and the output ends of the main energy storage supply circuit and the main power grid supply circuit are electrically connected to the input end of the sub-power supply branch;

[0007] The output end of the sub-power supply branch is electrically connected to the power receiving input end of the energy station system; the energy storage main supply circuit and the power grid main supply circuit are both electrically connected to the power grid power supply module, and the energy storage main supply circuit and the power grid main supply circuit are both provided with switches, and the switches are used to control the conduction and disconnection of the energy storage main supply circuit, the power grid main supply circuit and the power grid power supply module, as well as the conduction and disconnection between the energy storage main supply circuit, the power grid main supply circuit and the sub-power supply branch.

[0008] As an improved solution, the energy station system includes an air compression system, an oxygen enrichment system, a nitrogen enrichment system, a water pump system and a refrigeration system.

[0009] As an improved solution, the air compression system includes an air compression station A, the water pump system includes a circulating water pump station, and the refrigeration system includes a refrigeration station.

[0010] As an improved solution, the oxygen-enriched system includes an air compression station B and an oxygen-enriched gas station connected by pipelines.

[0011] As an improved solution, the nitrogen-enriched system includes an air compression station C and a nitrogen-enriched gas station connected by pipelines.

[0012] As an improved solution, the energy storage main supply circuit includes: a first main power supply line and an energy storage box, and a first electric control switch and a second electric control switch disposed on the first main power supply line and located at both ends of the energy storage box;

[0013] The main power supply circuit of the power grid includes a second main power supply line and a third electronically controlled switch arranged on the second main power supply line.

[0014] As an improved solution, the branch power supply branch includes a transfer wire and multiple branch power lines. The electrical output ends of the first main power line and the second main power line are electrically connected to the transfer wire respectively, and the electrical output end of the transfer wire is electrically connected to the multiple branch power lines; the multiple branch power lines are arranged in parallel, and each branch power line is provided with a fourth electronically controlled switch.

[0015] As an improved solution, each end of the plurality of branch power lines is electrically connected to a power receiving input end of an energy station system, and the number of the plurality of branch power lines is the same as the number of energy station systems.

[0016] As an improved solution, the automatic control module is implemented as a PLC controller or a DDC controller, and the signal output end of the automatic control module is connected to the electric control module by wire.

[0017] As an improved solution, the energy storage box, the electric control module and the automatic control module are implemented as an integrated cabinet, a split cabinet or an overall skid-mounted structure.

[0018] The utility model has the beneficial effects: the solution effectively improves the continuity and safety of power supply of the public auxiliary energy station, specifically including the use of the energy storage box's stored electricity when the energy station system is operating normally through the above structure, and when the stored electricity of the energy storage box is almost consumed, the switch in the electric control module is controlled by the automatic control module to switch to the mains power of the power grid power supply module. At the same time, when the power grid occasionally loses power, the energy storage box serves as a backup power supply for the energy station to prevent power supply accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model energy storage type public auxiliary energy station;

[0020] Figure 2 It is a schematic diagram of the control module structure of the utility model energy storage type public auxiliary energy station.

[0021] The accompanying drawings are marked as follows: 1. grid power supply module; 201. first main power supply line; 202. second main power supply line; 203. transfer wire; 204. branch power supply line; 3. energy storage box; 401. first electric control switch; 402. second electric control switch; 403. third electric control switch; 404. fourth electric control switch; 5. air compressor station A; 6. air compressor station B; 7. air compressor station C; 8. circulating water pump station; 9. refrigeration station; 10. oxygen-enriched gas station; 11. nitrogen-enriched gas station; 100. public auxiliary energy station; 200. electric control module; 300. automatic control module. DETAILED DESCRIPTION

[0022] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. The "first" and "second" involved in the present invention do not represent specific quantities and sequences, but are merely used to distinguish names.

[0024] Part I. Description of the Structural Layout of the Device

[0025] The specific structure of the energy storage air compressor station is as follows: Figure 1As shown, the system includes a power supply module 1, an energy storage box 3, a public auxiliary energy station, an electric control module 200 and an automatic control module 300. The public auxiliary energy station includes more than two energy station systems; the power input terminals of the energy station systems are electrically connected to the electric control modules 200 respectively;

[0026] The electric control module 200 includes a main energy storage supply circuit and a main power grid supply circuit arranged in parallel, and a sub-power supply branch, and the output ends of the main energy storage supply circuit and the main power grid supply circuit are electrically connected to the input end of the sub-power supply branch;

[0027] The output end of the sub-power supply branch is electrically connected to the power receiving input end of the energy station system; the energy storage main supply circuit and the power grid main supply circuit are both electrically connected to the power grid power supply module 1, and the energy storage main supply circuit and the power grid main supply circuit are both provided with switches, and the switches are used to control the conduction and disconnection of the energy storage main supply circuit, the power grid main supply circuit and the power grid power supply module 1, as well as the conduction and disconnection between the energy storage main supply circuit, the power grid main supply circuit and the sub-power supply branch.

[0028] Through the above structure, the energy storage box 3 is preferably used for the normal operation of the energy station system. When the energy storage box 3 is almost exhausted, the switch in the electric control module 200 is controlled by the automatic control module 300 to switch to the mains power of the power grid power supply module 200. At the same time, when the power grid occasionally fails, the energy storage box can also be used as a backup power supply for the energy station.

[0029] Optionally, the energy storage box 3, the electric control module 200 and the automatic control module 300 are integrated, split or skid-mounted structures.

[0030] The public auxiliary energy station 100 includes more than two energy station systems. Exemplarily, five energy station systems are provided in this embodiment, including an air compression system, an oxygen-enriched system, a nitrogen-enriched system, a water pump system and a refrigeration system, wherein the air compression system is an air compression station A5, which is used to supply compressed air; the oxygen-enriched system is an air compression station B6 and an oxygen-enriched gas station 10 connected by pipelines, which are used to supply oxygen-enriched gas; the nitrogen-enriched system is an air compression station C7 and a nitrogen-enriched gas station 11 connected by pipelines, which are used to supply nitrogen-enriched gas; the water pump system is a circulating water pump station 8, which is used to realize functions such as process cooling and equipment cooling in industrial production, and the refrigeration system is a refrigeration station 9, which is used to provide an industrial air-conditioning system; the power input ends of each energy station system are electrically connected to the electronic control module 200 respectively.

[0031] The energy storage main supply circuit includes: a first main power supply line 201 and an energy storage box 3, and a first electric control switch 401 and a second electric control switch 402 arranged on the first main power supply line 201 and located at both ends of the energy storage box 3;

[0032] The main power supply circuit of the power grid includes a second main power supply line 202 and a third electronically controlled switch 403 arranged on the second main power supply line 202 .

[0033] The branch power supply branch includes a switching wire 203 and multiple branch power supply lines 204. The electrical output ends of the first main power supply line 201 and the second main power supply line 202 are electrically connected to the switching wire 203 respectively, and the electrical output end of the switching wire 203 is electrically connected to multiple branch power supply lines 204; multiple branch power supply lines 204 are arranged in parallel, and each branch power supply line 204 is provided with a fourth electric control switch 404.

[0034] The end of each of the plurality of branch power lines 204 is electrically connected to a power receiving input terminal of an energy station system, and the number of the plurality of branch power lines 204 is the same as the number of energy station systems. For example, in this embodiment, five branch power lines 204 are provided, each branch power line 204 is provided with a fourth electric control switch 404 and the ends are electrically connected to the energy station system, and the plurality of branch power lines 204 are arranged in parallel.

[0035] The automatic control module 300 may adopt a PLC controller or a DDC controller, and the signal output end of the automatic control module 300 is connected to the electric control module 200 by wired means for controlling the electric control switches 401 - 404 .

[0036] PLC, the full name of which is Programmable Logic Controller, is a digital operation electronic system designed specifically for use in industrial environments. It uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of mechanical equipment or production processes through digital or analog input and output.

[0037] DDC, the full name is Direct Digital Controller, and its Chinese name is direct digital controller. It is a new type of direct digital controller that integrates computer technology, automatic control technology, and communication technology. Due to its flexible structure, the controller can form various independent control systems and realize various combinations. It is the main equipment for realizing industrial automation.

[0038] Part 2. Device Operation Method Description

[0039] The power demand of each energy station system in the public auxiliary energy station is supplied by the power supply module 1 and the electric control module 200. During the valley power period, the second main power supply line 202 is connected to the power supply module 1. At this time, the first electric control switch 401, the third electric control switch 403, and the fourth electric control switch 404 are all in a closed conduction state, and the second electric control switch 402 is disconnected; after the first main power supply line 201 is connected to the power supply, the energy storage box 3 starts to charge and store energy. At the same time, the transfer line 203 is connected to the power supply, and multiple branch power supply lines 204 are used to provide power to each energy station system to ensure their normal operation. This not only makes full use of the valley power, but also realizes the effective storage and distribution of energy, thereby improving the operating efficiency of the system.

[0040] During the mains period, the first electric switch 401 and the third electric switch 403 are in the disconnected state, while the second electric switch 402 and the fourth electric switch 404 remain closed and on. At this time, the system will give priority to using the energy storage box 9 for power supply; when the energy storage box 9 encounters an emergency safety situation, in order to ensure the normal operation of each energy station system and facilitate the maintenance of the energy storage box 9, the first electric switch 401 and the second electric switch 402 will be automatically disconnected, while the third electric switch 403 remains closed and on. Through precise management and efficient use of electric energy, the energy station system can give priority to using the valley power with lower cost during the mains supply period, thereby reducing the mains power consumption and improving production efficiency.

[0041] The self-control module 300 can flexibly and remotely control the fourth electrically controlled switch 404 corresponding to the power receiving end of each energy station system according to the actual working conditions. For example, since the water pump station 9 is frequently used in summer and has a low demand in winter and is in a shutdown state for a long time, the fourth electrically controlled switch 404 of the corresponding water pump station 9 will be disconnected at this time to ensure energy saving and avoid unnecessary energy consumption. At the same time, this operation will not affect the normal operation of other energy stations. Compared with the connection mode of a single energy station system and an energy storage box in traditional technology, this public auxiliary energy station ensures that the electricity in the energy storage box 3 can be continuously and effectively utilized, and there is no need to return the surplus electricity to the grid power supply module 1, thereby avoiding the potential safety hazards and energy loss in the process of returning electricity, significantly improving the overall energy efficiency and the safety of the operation of the energy station system, and improving the utilization rate of valley electricity by the energy station system.

Claims

1. A storage-type public auxiliary energy station, characterized in that: It includes a power supply module, an energy storage box, a public auxiliary energy station, an electric control module and an automatic control module. The public auxiliary energy station includes more than two energy station systems. The power input terminals of the energy station system are electrically connected to the electric control modules respectively. The electric control module includes a main energy storage supply circuit and a main power grid supply circuit arranged in parallel, and a sub-power supply branch, and the output ends of the main energy storage supply circuit and the main power grid supply circuit are electrically connected to the input end of the sub-power supply branch; The output end of the sub-supply branch is electrically connected to the power receiving input end of the energy station system; the energy storage main supply circuit and the grid main supply circuit are both electrically connected to the grid power supply module, and the energy storage main supply circuit and the grid main supply circuit are both provided with switches, which are used to control the conduction and disconnection of the energy storage main supply circuit, the grid main supply circuit and the grid power supply module, as well as the conduction and disconnection between the energy storage main supply circuit, the grid main supply circuit and the sub-supply branch.

2. The energy storage type public auxiliary energy station according to claim 1, characterized in that: The energy station system includes an air compression system, an oxygen enrichment system, a nitrogen enrichment system, a water pump system and a refrigeration system.

3. The energy storage type public auxiliary energy station according to claim 2, characterized in that: The air compression system includes an air compression station A, the water pump system includes a circulating water pump station, and the refrigeration system includes a refrigeration station.

4. The energy storage type public auxiliary energy station according to claim 2, characterized in that: The oxygen-enriched system comprises an air compression station B and an oxygen-enriched gas station connected by pipelines.

5. The energy storage type public auxiliary energy station according to claim 2, characterized in that: The nitrogen-enriched system comprises an air compression station C and a nitrogen-enriched gas station connected by pipelines.

6. The energy storage type public auxiliary energy station according to any one of claims 1 to 5, characterized in that: The energy storage main supply circuit comprises: a first main power supply line and an energy storage electric box, and a first electric control switch and a second electric control switch arranged on the first main power supply line and located at both ends of the energy storage electric box; The main power supply circuit of the power grid includes a second main power supply line and a third electronically controlled switch arranged on the second main power supply line.

7. The energy storage type public auxiliary energy station according to claim 6, characterized in that: The branch power supply branch includes a transfer wire and multiple branch power lines. The electrical output ends of the first main power line and the second main power line are electrically connected to the transfer wire respectively, and the electrical output end of the transfer wire is electrically connected to multiple branch power lines; the multiple branch power lines are arranged in parallel, and each branch power line is provided with a fourth electronically controlled switch.

8. The energy storage type public auxiliary energy station according to claim 7, characterized in that: The end of each of the plurality of branch power lines is electrically connected to a power receiving input end of an energy station system, and the number of the plurality of branch power lines is the same as the number of energy station systems.

9. The energy storage type public auxiliary energy station according to claim 1, characterized in that: The automatic control module is implemented as a PLC controller or a DDC controller, and the signal output end of the automatic control module is connected to the electric control module by wire.

10. The energy storage type public auxiliary energy station according to claim 1, characterized in that: The energy storage box, electric control module and automatic control module are implemented as an integrated cabinet, a split cabinet or an overall skid-mounted structure.

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