Wind-light-storage integrated energy-saving environment-friendly new energy power generation, current transformation and voltage boosting integrated box-type substation

Abstract

The utility model discloses a wind-light storage integrated energy-saving environment-friendly new energy power generation, current transformation and voltage boosting integrated box transformer substation, which comprises a wind-light storage power supply loop, a transformer low-voltage side power supply loop, a control system and an auxiliary equipment load, the wind and light storage and power supply loop comprises a photovoltaic power generation assembly, a first direct-current power distribution unit, a first DC / DC bidirectional power converter, a small wind turbine assembly, a second direct-current power distribution unit, a second DC / DC bidirectional power converter, a battery energy storage system, a wind and light energy storage converter, a direct-current switch and a first alternating-current low-voltage switch. The wind and light energy storage converter is connected to the ATS automatic change-over switch through the first alternating current low-voltage switch, and the ATS automatic change-over switch is connected to a transformer low-voltage side power supply loop through the second alternating current low-voltage switch. The problems that a traditional uninterruptible power supply scheme is large in occupied space, low in energy conversion efficiency, high in operation and maintenance cost and the like are fully solved.

Description

Technical Field

[0001] The utility model relates to the technical field of current conversion and voltage boosting integrated box transformers, and in particular to a wind, light and storage integrated energy-saving and environment-friendly new energy power generation current conversion and voltage boosting integrated box transformer. Background Art

[0002] The traditional integrated converter and boost box-type transformer adopts an outdoor prefabricated cabin-type energy storage boost unit, integrating the wind and solar energy storage converter, dry-type transformer, and high-voltage chamber. The lead-acid battery UPS uninterruptible power supply system configured in the product is mainly used to provide emergency power supply for the box-type transformer intelligent management system, lighting system, temperature and humidity control system, maintenance power socket, video surveillance background, fire monitoring background and other equipment.

[0003] The lead-acid battery energy storage system configured in the traditional UPS uninterruptible power supply system takes up a lot of space, has low energy conversion efficiency, and the battery life is usually between 2 and 5 years. The capacity and performance of the battery will decrease over time, and it needs to be replaced or maintained regularly, which increases the cost of use and management complexity, resulting in high operation and maintenance costs.

[0004] Therefore, it is necessary to propose an integrated wind, solar and storage energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to address the shortcomings of the prior art and provide an integrated wind, solar and storage energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer to solve the problems of the existing conversion and boosting integrated box transformer uninterruptible power supply solution occupying a large space, low energy conversion efficiency, and high operation and maintenance costs.

[0006] The utility model provides a wind-solar-storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box transformer, comprising: a wind-solar-storage power supply circuit, a transformer low-voltage side power supply circuit, a control system and auxiliary equipment loads; the wind-solar-storage power supply circuit comprises: a photovoltaic power generation component, a first DC distribution unit, a first DC / DC bidirectional power converter, a small wind turbine generator component, a second DC distribution unit, a second DC / DC bidirectional power converter, a battery energy storage system, a wind-solar energy storage converter, a DC switch and a first AC low-voltage switch; the photovoltaic power generation component is laid in the idle space on the top of the boosting integrated box transformer, the photovoltaic power generation component is connected to the first DC distribution unit after convergence, and the first DC The output of the distribution unit is connected to the first DC / DC bidirectional power converter; the small wind turbine generator assembly is laid in the idle space on the top of the step-up integrated box transformer, and the output of the small wind turbine generator assembly is connected to the second DC distribution unit, and the output of the second DC distribution unit is connected to the second DC / DC bidirectional power converter; the outputs of the first DC / DC bidirectional power converter and the second DC / DC bidirectional power converter are connected to the wind-solar energy storage converter, and the battery energy storage system is connected to the wind-solar energy storage converter via a DC switch; the wind-solar energy storage converter is connected to the ATS automatic switching switch via the first AC low-voltage switch, and the ATS automatic switching switch is connected to the low-voltage side power supply circuit of the transformer via the second AC low-voltage switch.

[0007] Furthermore, the battery energy storage system adopts a ternary lithium, lithium iron phosphate or lithium titanate battery energy storage system.

[0008] Furthermore, the first DC distribution unit, the first DC / DC bidirectional power converter, the second DC distribution unit, and the second DC / DC bidirectional power converter are integrated in the first distribution cabinet, and the wind-solar energy storage converter, the battery energy storage system, and the DC switch are integrated in the second distribution cabinet.

[0009] Furthermore, the ATS automatic transfer switch is connected to the control system and the auxiliary equipment load via a third AC low-voltage switch and a miniature circuit breaker in sequence.

[0010] Furthermore, the battery energy storage system, the first DC / DC bidirectional power converter, the second DC / DC bidirectional power converter, the wind-solar energy storage converter, and the ATS automatic switching switch are respectively connected to the box-type transformer intelligent control and management system.

[0011] The utility model has the following beneficial effects: the utility model provides a wind, light and storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer, the photovoltaic power generation component generates electricity during sunshine time to power the control system and auxiliary equipment in the box transformer, and the excess electricity is used to charge the energy storage battery system, which is used to power the control system and auxiliary equipment in the boosting integrated box transformer during the night without light, and when the photovoltaic power generation component cannot generate electricity due to insufficient light or abnormal weather, the control transformer power supply and the energy storage battery system are used to power the box transformer control system and auxiliary equipment with wind power generation, and the excess electricity is used to charge the energy storage battery system, which is used for the boosting integrated box transformer control system and Auxiliary equipment power supply: when special climatic reasons make it impossible for small wind turbine components to generate electricity, the control transformer power supply and energy storage battery system are used to provide power supply. The two auxiliary power supply schemes run simultaneously to replace the traditional UPS uninterruptible power supply system; make full use of solar energy and wind clean energy, through the configuration of distributed photovoltaic power generation and small wind turbine power generation system, and use the lithium iron phosphate battery energy storage system with higher energy density to replace the lead-acid battery UPS system, improve equipment use efficiency and safety, reduce the workload of operation and maintenance, save space with the same capacity, and reduce operation and maintenance costs, which fully solves the problems of traditional uninterruptible power supply solutions such as large space occupation, low energy conversion efficiency, and high operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is the electrical scheme diagram of the utility model of wind, solar and storage integrated energy-saving and environmentally friendly new energy power generation, current conversion and voltage boosting integrated box transformer;

[0014] Figure 2 This is the main view of the structural layout of the utility model of the wind, solar and storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box-type transformer;

[0015] Figure 3 It is a side view of the structural arrangement of the utility model of the wind-solar-storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box-type transformer;

[0016] Figure 4 It is a top view of the structural layout of the wind-solar-storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box-type transformer of the utility model.

[0017] Illustration: 1-First communication power cabinet; 2-Second communication power cabinet; 5-Intelligent fire extinguishing system; 6-First power distribution cabinet; 7-Second power distribution cabinet; 10-Patrol robot; 12-PCS outdoor energy storage converter; 13-Industrial air conditioner; 17-Video surveillance probe; 101-Electric indicator; 102-35KV voltage transformer; 103-35KV lightning arrester; 104-High-voltage disconnector; 105-High-voltage circuit breaker; 106-35KV current transformer; 107-Earthing switch; 108-35kV dry-type transformer; 109-Intelligent circuit breaker; 110-Low-voltage current transformer; 111-Low-voltage Transformer; 112-low voltage surge protector; 113-second AC low voltage switch; 114-first AC low voltage switch; 115-ATS automatic switching switch; 116-third AC low voltage switch; 118-wind and solar energy storage converter; 119-second DC / DC bidirectional power converter; 120-second DC distribution unit; 121-small wind turbine generator assembly; 122-first DC / DC bidirectional power converter; 123-first DC distribution unit; 124-photovoltaic power generation assembly; 125-DC switch; 126-battery energy storage system; 127-box transformer intelligent control and management system; 129-BMS battery system. DETAILED DESCRIPTION

[0018] See also Figures 1 to 4 The embodiment of the utility model provides an integrated wind, solar and storage energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer, including: a wind, solar and storage power supply circuit, a transformer low-voltage side power supply circuit, a control system and auxiliary equipment loads.

[0019] Among them, the wind, solar and energy storage power supply circuit includes: a photovoltaic power generation component 124, a first DC distribution unit 123, a first DC / DC bidirectional power converter 122, a small wind turbine generator component 121, a second DC distribution unit 120, a second DC / DC bidirectional power converter 119, a battery energy storage system 126, a wind, solar and energy storage converter 118, a DC switch 125 and a first AC low-voltage switch 114.

[0020] The photovoltaic power generation component 124 is laid in the idle space on the top of the step-up integrated box transformer, and the photovoltaic power generation component 124 is used to convert solar energy into electrical energy. The photovoltaic power generation component 124 is connected to the first DC power distribution unit 123 after convergence, and the output of the first DC power distribution unit 123 is connected to the first DC / DC bidirectional power converter 122; the first DC / DC bidirectional power converter 122 can convert the DC voltage output by the photovoltaic power generation component into a DC voltage suitable for charging the battery energy storage system 126, thereby charging the battery energy storage system 126. The battery energy storage system 126 can be selected from ternary lithium, lithium iron phosphate, lithium titanate, etc.

[0021] The small wind turbine generator assembly 121 is laid in the idle space on the top of the step-up integrated box transformer, and the small wind turbine generator assembly 121 is used to convert wind energy into electrical energy. The output of the small wind turbine generator assembly 121 is connected to the second DC power distribution unit 120, and the second DC power distribution unit 120 is used to distribute, monitor and protect DC power. The second DC / DC bidirectional power converter 119 can convert the DC voltage output by the small wind turbine generator assembly into a DC voltage suitable for charging the battery energy storage system 126, thereby charging the battery energy storage system 126.

[0022] The output of the second DC power distribution unit 120 is connected to the second DC / DC bidirectional power converter 119; the outputs of the first DC / DC bidirectional power converter 122 and the second DC / DC bidirectional power converter 119 are connected to the wind-solar energy storage converter 118, which is used to convert the DC voltage generated by the small wind turbine and the photovoltaic module or the DC voltage output by the battery energy storage system 126 into an industrial frequency low-voltage AC voltage. The battery energy storage system 126 is connected to the wind-solar energy storage converter 118 via the DC switch 125; the wind-solar energy storage converter 118 is connected to the ATS automatic switching switch 115 via the first AC low-voltage switch 114, and the ATS automatic switching switch 115 is connected to the transformer low-voltage side power supply circuit via the second AC low-voltage switch 113.

[0023] The first DC power distribution unit 123, the first DC / DC bidirectional power converter 122, the second DC power distribution unit 120, and the second DC / DC bidirectional power converter 119 are integrated in the first power distribution cabinet 6, and the wind-solar energy storage converter 118, the battery energy storage system 126, and the DC switch 125 are integrated in the second power distribution cabinet 7. The ATS automatic switching switch 115 is connected to the control system and the auxiliary equipment load through the third AC low-voltage switch 116 and the miniature circuit breaker 117 in sequence. The battery energy storage system 126, the first DC / DC bidirectional power converter 122, the second DC / DC bidirectional power converter 119, the wind-solar energy storage converter 118, and the ATS automatic switching switch 115 are respectively connected to the box-type transformer intelligent control management system 127.

[0024] The low-voltage side power supply circuit of the transformer can adopt the existing technology. In this embodiment, the incoming and outgoing lines of the box-type substation are cables, and the incoming and outgoing lines are located at the bottom of the box-type transformer. The cable-passing part of the box-type transformer should be sealed with a sealing system to prevent internal moisture from entering the box-type transformer. A live indicator 101 is provided in the high-voltage room to indicate whether the high-voltage room is energized, and to control the electromagnetic lock on the door of the high-voltage room to ensure that the inner door cannot be opened when the high-voltage room is energized. A 35KV voltage transformer 102 is configured to realize the output of the 35KV side voltage signal. A 35KV lightning arrester (with a discharge counter and a leakage current detector) 103, the pollution level is selected as the enhanced type of level IV, which is suitable for use on-site with severe pollution and frequent lightning. The high-voltage disconnector 104 is located between the circuit breaker and the cable inlet and is arranged in the high-voltage cabinet. The 35kV disconnector is placed in an independent compartment, with safe isolation from the circuit breaker, and is equipped with an electric operating mechanism. High-voltage circuit breaker 105, the high-voltage vacuum arc chamber adopts a sealed pole and epoxy resin solid insulation. The structure adopts an integrated operating mechanism and the main body. The high-voltage side protection must be linked to the low-voltage side circuit breaker, and the protection outlet pressure plate (plug-in type) is added. A 35KV current transformer 106 is configured to realize the output of 35KV side current signal and protection signal. The grounding switch 107 is equipped with an electric operating mechanism, and there is a mechanical interlock between the circuit breaker and the disconnector to prevent misoperation. The 35kV dry-type transformer 108 uses a three-phase, double-split, no-load voltage regulation, air-cooled, low-loss 35kV dry-type transformer. The core uses high-quality, low-loss, grain-oriented cold-rolled silicon steel sheets, and multi-step oblique lap joints are used on the core column and the iron yoke. During assembly, the entire core is pressed tightly with uniform pressure, and the core will not loosen due to vibration during transportation and operation.

[0025] The winding is made of high-quality copper, and the low-voltage coil is made of copper foil. The coil adopts the overall set process and constant pressure drying process. The reactance value of all coils is consistent, and the ampere-turn distribution is uniform. The winding has a good impulse voltage wave distribution, and the transformer does not use the method of adding nonlinear resistors to limit overvoltage; the field strength is strictly controlled, and heat-resistant, high-density, low-ash insulating paper is used as inter-turn insulation to ensure that no local discharge and insulation breakdown occur in the winding. The winding leakage flux is controlled to avoid local overheating in the winding, lead wire, tank wall and other metal components. The pads on the transformer coil are made of high-density cardboard and chamfered.

[0026] The winding is properly reinforced, the lead wire is fully tightened, and the body of the device forms a solid whole, so that it has sufficient strength to withstand short circuits. No relative displacement occurs during transportation and operation. The winding, assembly, and compression should have strict tightening process measures, and the lead wire has sufficient support to make the body of the device form a tight whole with sufficient short-circuit resistance. The transformer is equipped with a thermostat to display the temperature value of the transformer winding, output the corresponding control signal, control the start and stop of the fan, and output normal, alarm and trip signals according to the current status. At the same time, various data are transmitted to the intelligent control management system of the box transformer through RS-485 for centralized monitoring.

[0027] The low-voltage side is equipped with intelligent circuit breaker 109 to realize the protection and control function of the PSC energy storage converter, adopting a zero arcing structure and a low-temperature resistant product. The trip unit has long-delay protection, short-delay protection, instantaneous tripping protection and grounding protection functions, and is equipped with a communication module and an electric operating mechanism.

[0028] A low-voltage current transformer 110 is configured to realize the output of low-voltage side current signal and protection signal. Three low-voltage voltage transformers 111 are configured, 0.5 level, which can realize the output of low-voltage side voltage AC100V. The low-voltage surge protector 112 adopts B+C level lightning protection and surge protection device, has the function of uploading fault signals, and the opening and closing of its front-end protection element also has the function of sending signals.

[0029] The BMS battery system 129 is configured to realize intelligent management and maintenance of each battery unit in the battery energy storage system 126, monitor the status of the battery, prevent the battery from being overcharged and over-discharged, and extend the service life of the battery. The PCS outdoor energy storage inverter 12 is an outdoor type with a protection level of IP65, and is composed of a DC / AC bidirectional inverter, a control unit, etc. The PCS controller receives background control instructions through communication, and controls the inverter to charge or discharge the battery according to the sign and size of the power instruction, thereby realizing the regulation of the active power and reactive power of the power grid. The PCS controller communicates with the BMS through the CAN interface to obtain the battery pack status information in the battery energy storage container, and can realize protective charging and discharging of the battery in the battery energy storage container to ensure the safe operation of the battery.

[0030] Communications, distribution transformer measurement and control, EMU, BMS, switches, etc. are placed in the second communication power cabinet 2. Video monitoring host, inspection robot control host, switches, etc. are placed in the first communication power cabinet 1.

[0031] The intelligent control and management system 127 of the box-type transformer is used for monitoring, protection and control of the integrated box-type transformer, which can realize the remote management and automatic monitoring of all information in the integrated photovoltaic storage plateau energy-saving and environmentally friendly new energy power generation dedicated step-up integrated box-type transformer, and realize its own four remote functions of "telemetry, remote signaling, remote control and remote adjustment" through remote control. As shown in Table 1.

[0032] Table 1 Telecontrol information volume

[0033]

[0034]

[0035] The above four remote functions are used to realize the measurement and calculation of three-phase current, voltage, frequency, power factor, active power, reactive power and other AC power frequency electrical quantities at each power point of the integrated wind, solar and storage energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer, realize three-stage current protection, zero-sequence current protection, low voltage protection, high voltage protection and transformer oil over-temperature alarm protection, etc., realize remote control operation of each main switch, realize the control of the power generation power of the photovoltaic power generation component 124, the small wind turbine component 121 and the charging and discharging power of the battery energy storage system 126, and upload all important signals to the monitoring background.

[0036] The integrated box transformer is equipped with a video surveillance probe 17. It can monitor the surrounding area and the opening of the door by personnel. A video surveillance pole is erected outside the box transformer, and the information is sent to the switch through the monitoring host, and then the box transformer information is uploaded to the background through this switch.

[0037] The integrated box-type transformer is equipped with an intelligent fire extinguishing system 5. The system consists of the following components: Automatic fire alarm system: It is mainly composed of a fire alarm controller, smoke detectors, temperature detectors, linkage control modules and a fire power supply. It is responsible for fire detection and alarm tasks in the fire extinguishing zone, and issues fire extinguishing commands to the fire extinguishing control panels in each zone. At the same time, it receives pre-start and started release signals from the fire extinguishing control panel.

[0038] Fire extinguishing system: mainly composed of fire extinguishing control panel, gas discharge indicator light, sound and light alarm (two different sound and light signals for fire alarm and start), HFC-227ea fire extinguishing device, and manual start-stop switch. It is responsible for receiving the fire extinguishing command issued by the fire alarm system, automatically starting HFC-227ea to extinguish the fire, and feeding back the pre-start and started fire extinguishing signals to the fire alarm system, while linking the air conditioner and smoke exhaust fan to automatically shut down when extinguishing the fire.

[0039] The integrated box transformer is equipped with an industrial air conditioner 13, which is equipped with an intelligent control system. It can adjust the cooling effect in real time according to actual needs and improve energy efficiency. It uses high-strength materials and special designs, can adapt to complex and harsh environmental conditions, and ensure long-term reliable operation. It can quickly adjust the temperature to the appropriate range to ensure the normal operation of the equipment.

[0040] The integrated box-type transformer is equipped with a patrol robot 10. The system can achieve horizontal and linear movement in the box by mounting a camera; adjustable speed, S-curve acceleration and deceleration control; preset position, automatic cruise and alarm, intelligent control and other functions; realize the function of digital monitoring system. At the same time, the system can be equipped with infrared detection, temperature and humidity sensors, gas noise sensors, radar detectors, and background image analysis software to achieve real-time control of the detection site environment. The integrated box-type transformer shell uses a prefabricated cabin type, which has high strength and rigidity, can withstand large loads and resist natural disasters, and has excellent sealing and corrosion resistance.

[0041] The working principle of the wind, solar and storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer of the utility model is as follows:

[0042] When the power generation conditions of the photovoltaic power generation component 124 and the small wind turbine generator component 121 at the project operation site meet the power consumption of the control system and auxiliary equipment loads in the step-up integrated box transformer, the ATS automatic switching switch 115 switches to the wind-solar-storage power supply circuit, and the electric energy generated by the photovoltaic power generation component 124 passes through the first DC distribution unit 123 and the first DC / DC bidirectional power converter 122; the electric energy generated by the small wind turbine generator component 121 passes through the second DC distribution unit 120 and the second DC / DC bidirectional power converter 119; to the wind-photovoltaic energy storage inverter 118, the first AC low-voltage switch 114 and the ATS automatic switching switch 115 to supply power to the control system and auxiliary equipment loads in the step-up integrated box transformer.

[0043] When the wind and solar power generation conditions at the project operation site are weak, the photovoltaic power generation component 124 and the small wind turbine generator component 121 generate electricity to charge the battery energy storage system 126, and the low-voltage side power supply circuit of the transformer supplies power to the control system and auxiliary equipment loads. At this time, the ATS automatic switching switch 115 switches to the low-voltage side power supply circuit of the transformer.

[0044] When the conditions for wind and solar power generation are sufficient at the project operation site, the photovoltaic power generation component 124 and the small wind turbine generator component 121 generate electricity to supply power to the control system and auxiliary equipment loads. If the power generation is greater than the load power consumption, the excess electricity is stored in the battery energy storage system 126.

[0045] When the project operation site does not have the conditions for wind and solar power generation, the control system and auxiliary equipment loads are powered by the low-voltage side power supply circuit of the transformer.

[0046] It can be seen from the above embodiments that the utility model utilizes the wind and light resources of the project site to upgrade and design a wind, light and storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer, integrates the box transformer intelligent control and management system, and lays photovoltaic power generation components and small wind turbine power generation components in the idle space on the top of the boosting integrated box transformer: the photovoltaic power generation components generate electricity to power the control system and auxiliary equipment in the box transformer during sunshine time, and the excess electricity is used to charge the energy storage battery system, which is used to power the control system and auxiliary equipment in the boosting integrated box transformer during the night without light. When the photovoltaic power generation components cannot generate electricity due to insufficient light or abnormal weather, the control transformer power supply and the energy storage battery system are used to power the control system and auxiliary equipment in the boosting integrated box transformer dedicated for new energy photovoltaic power generation during windless periods. When the small wind turbine components cannot generate electricity due to special climatic reasons, the control transformer power supply and the energy storage battery system are used to power the two auxiliary power supply schemes simultaneously to replace the traditional UPS uninterruptible power supply system.

[0047] Make full use of the distributed new energy power supply system, cooperate with the use of lithium iron phosphate battery energy storage system with higher energy density and distributed photovoltaic power generation to replace the lead-acid battery UPS system, improve equipment efficiency and safety, reduce operation and maintenance workload, save space with small volume of the same capacity, reduce operation and maintenance costs, and fully solve the problems of traditional uninterruptible power supply solutions such as large space occupation, low energy conversion efficiency, and high operation and maintenance costs.

[0048] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wind, solar and storage integrated energy-saving and environmentally friendly new energy power generation conversion and boosting integrated box transformer, characterized in that: include: Wind, solar and energy storage power supply circuit, transformer low-voltage side power supply circuit, control system and auxiliary equipment load; The wind-solar-energy storage power supply circuit comprises: a photovoltaic power generation component (124), a first direct current distribution unit (123), a first DC / DC bidirectional power converter (122), a small wind turbine generator component (121), a second direct current distribution unit (120), a second DC / DC bidirectional power converter (119), a battery energy storage system (126), a wind-solar-energy storage converter (118), a direct current switch (125) and a first alternating current low-voltage switch (114); The photovoltaic power generation component (124) is laid in the idle space on the top of the boost integrated box transformer, and the photovoltaic power generation component (124) is connected to the first DC power distribution unit (123) after convergence, and the output of the first DC power distribution unit (123) is connected to the first DC / DC bidirectional power converter (122); the small wind turbine generator component (121) is laid in the idle space on the top of the boost integrated box transformer, and the output of the small wind turbine generator component (121) is connected to the second DC power distribution unit (120), and the output of the second DC power distribution unit (120) is connected to the second DC / DC bidirectional power converter (122). C bidirectional power converter (119); the outputs of the first DC / DC bidirectional power converter (122) and the second DC / DC bidirectional power converter (119) are connected to the wind-solar energy storage converter (118); the battery energy storage system (126) is connected to the wind-solar energy storage converter (118) via the DC switch (125); the wind-solar energy storage converter (118) is connected to the ATS automatic switching switch (115) via the first AC low-voltage switch (114); the ATS automatic switching switch (115) is connected to the transformer low-voltage side power supply circuit via the second AC low-voltage switch (113).

2. The wind, solar and storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box transformer as claimed in claim 1 is characterized in that: The battery energy storage system (126) adopts a ternary lithium, lithium iron phosphate or lithium titanate battery energy storage system.

3. The wind, solar and storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box-type transformer as claimed in claim 1 is characterized in that: The first DC power distribution unit (123), the first DC / DC bidirectional power converter (122), the second DC power distribution unit (120), and the second DC / DC bidirectional power converter (119) are integrated in the first power distribution cabinet (6), and the wind-solar energy storage converter (118), the battery energy storage system (126), and the DC switch (125) are integrated in the second power distribution cabinet (7).

4. The wind, photovoltaic and storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box-type transformer as claimed in claim 1 is characterized in that: The ATS automatic transfer switch (115) is connected to the control system and the auxiliary equipment load via the third AC low-voltage switch (116) and the miniature circuit breaker (117) in sequence.

5. The wind, solar and storage integrated energy-saving and environment-friendly new energy power generation conversion and boosting integrated box-type transformer as claimed in claim 1 is characterized in that: The battery energy storage system (126), the first DC / DC bidirectional power converter (122), the second DC / DC bidirectional power converter (119), the wind-solar energy storage converter (118), and the ATS automatic switching switch (115) are respectively connected to the box-type transformer intelligent control management system (127).

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