Uninterruptible power supply optimization and regulation and control device for overhauling low-voltage distribution area

Abstract

The utility model discloses an uninterruptible power supply optimization and regulation and control device for overhauling a low-voltage distribution area, which comprises a generator car, and when the mains supply is cut off, the generator car is used for supplying power; when the commercial power is cut off, the circuit breaker QF3 is closed, and the generator car automatically supplies power to the load LOAD1; when the load LOAD2 and the load LOAD3 need to be supplied with power, the circuit breaker QF2 is closed, and then the circuit breaker QFg2, the circuit breaker QFb2, the circuit breaker QFg3 and the circuit breaker QFb3 are closed to supply power to the load LOAD2 and the load LOAD3; through the power supply quality regulation and control and seamless grid-connected and off-grid device of the low-voltage generator car, the three-phase unbalanced load of the system is dynamically regulated and controlled, and the loading capacity of the generator is improved, so that seamless access and exit of the low-voltage generator are realized, and the electric energy quality, the reliability and the user experience can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the electric power industry, and in particular to an uninterruptible power supply optimization and control device for repairing a low-voltage distribution station area. Background Art

[0002] With the rapid economic development, the urban electricity load is growing rapidly, the pressure on the power grid to provide stable power is increasing, and users' requirements for power supply reliability and power quality are also increasing. During the operation of power equipment, especially during peak power consumption and severe weather such as typhoons and thunderstorms, accidents that cannot be repaired in a short time are inevitable. At this time, it is urgent to use the emergency power supply of emergency generators to quickly restore the power supply of important users such as residents, which can not only ensure the reliability of power supply, but also is a good reflection of the high-quality service provided by power supply companies. The ability to quickly restore power supply is of great significance to people's normal production and life.

[0003] During the grid-connected operation of conventional low-voltage generators, users generally experience two power outages, resulting in a poor electricity experience and low power supply reliability.

[0004] Therefore, it is necessary to design an uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas. Utility Model Content

[0005] The utility model aims to provide an uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas to solve the problems raised in the background technology.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] An uninterruptible power supply optimization and control device for repairing a low-voltage distribution station area comprises a power generation vehicle, which is used to supply electricity when the city power is cut off.

[0008] The above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station area, wherein the power generation vehicle is electrically connected to the load LOAD1 through the circuit breaker QF3.

[0009] The above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas, wherein the power generation vehicle is electrically connected to the low-voltage power generation vehicle power supply quality control and seamless grid-connected and off-grid device through a wire, and the low-voltage power generation vehicle power supply quality control and seamless grid-connected and off-grid device is electrically connected to the circuit breaker QF3.

[0010] The above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station area, wherein the load LOAD1 is connected in series with circuit breaker QFb1 and circuit breaker QFg1, the circuit breaker QFg1 is connected in series with circuit breaker QF1, and the circuit breaker QF1 is electrically connected to the high-voltage line through the transformer and circuit breaker QFG1.

[0011] The above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station area, wherein the low-voltage power generation vehicle power supply quality control and seamless grid-connection and disconnection device is electrically connected to a circuit breaker QF2, and the circuit breaker QF2 is connected in parallel with the circuit breaker QF1.

[0012] In the above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas, the circuit breaker QF2 is electrically connected to the load LOAD2 through the circuit breaker QFg2 and the circuit breaker QFb2.

[0013] In the above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station area, the circuit breaker QF2 is electrically connected to the load LOAD3 through the circuit breaker QFg3 and the circuit breaker QFb3.

[0014] The above-mentioned uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas, wherein the power generation vehicle is a 250KW power generation vehicle.

[0015] The utility model has at least the following beneficial effects:

[0016] When the city power fails, the circuit breaker QF3 closes and the generator car automatically supplies power to the load LOAD1;

[0017] When it is necessary to supply power to load LOAD2 and load LOAD3, the circuit breaker QF2 is closed, and then the circuit breakers QFg2, QFb2, QFg3 and QFb3 are closed to supply power to load LOAD2 and load LOAD3.

[0018] Through the power supply quality control and seamless grid-connection and off-grid device of the low-voltage generator vehicle, the three-phase unbalanced load of the system is dynamically controlled and the load capacity of the generator is improved, the seamless connection and exit of the low-voltage generator can be achieved, which can effectively improve the power quality, reliability and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 The utility model is a circuit schematic diagram of an uninterruptible power supply optimization and control device for repairing low-voltage distribution station areas. DETAILED DESCRIPTION

[0021] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Please refer to Figure 1 As shown, an embodiment of the utility model provides an uninterruptible power supply optimization and control device for repairing a low-voltage distribution station area, including a power generation vehicle, which is used to supply electricity when the city power is cut off.

[0023] The power generation vehicle is electrically connected to the load LOAD1 via the circuit breaker QF3.

[0024] Among them, the power generation vehicle is electrically connected to the low-voltage power generation vehicle power supply quality control and seamless grid-connection and disconnection device through a wire, and the low-voltage power generation vehicle power supply quality control and seamless grid-connection and disconnection device is electrically connected to the circuit breaker QF3.

[0025] The load LOAD1 is connected in series with a circuit breaker QFb1 and a circuit breaker QFg1, the circuit breaker QFg1 is connected in series with a circuit breaker QF1, and the circuit breaker QF1 is electrically connected to the high-voltage line through a transformer and a circuit breaker QFG1.

[0026] The low-voltage power generation vehicle power supply quality control and seamless grid-connection and off-grid device is electrically connected to a circuit breaker QF2, and the circuit breaker QF2 is connected in parallel with the circuit breaker QF1.

[0027] The circuit breaker QF2 is electrically connected to the load LOAD2 through the circuit breakers QFg2 and QFb2.

[0028] The circuit breaker QF2 is electrically connected to the load LOAD3 through the circuit breakers QFg3 and QFb3.

[0029] Wherein, the power generation vehicle is a 250KW power generation vehicle.

[0030] Working principle: When the city power is cut off, the circuit breaker QF3 is closed and the generator car automatically supplies power to the load LOAD1;

[0031] When it is necessary to supply power to load LOAD2 and load LOAD3, the circuit breaker QF2 is closed, and then the circuit breakers QFg2, QFb2, QFg3 and QFb3 are closed to supply power to load LOAD2 and load LOAD3.

[0032] Through the power supply quality control and seamless grid-connection and off-grid device of the low-voltage generator vehicle, the three-phase unbalanced load of the system is dynamically controlled and the load capacity of the generator is improved, the seamless connection and exit of the low-voltage generator can be achieved, which can effectively improve the power quality, reliability and user experience.

[0033] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An uninterruptible power supply optimization and control device for repairing low-voltage distribution station area, characterized in that: It includes a generator car, which is used to supply electricity when the city power is cut off; The power generation vehicle is electrically connected to the load LOAD1 through the circuit breaker QF3, and the power generation vehicle is electrically connected to the low-voltage power generation vehicle power supply quality control and seamless grid-connection and off-grid device through a wire, and the low-voltage power generation vehicle power supply quality control and seamless grid-connection and off-grid device is electrically connected to the circuit breaker QF3; The load LOAD1 is connected in series with a circuit breaker QFb1 and a circuit breaker QFg1, the circuit breaker QFg1 is connected in series with a circuit breaker QF1, and the circuit breaker QF1 is electrically connected to the high-voltage line through a transformer and a circuit breaker QFG1; The low-voltage generator vehicle power supply quality control and seamless grid-connection and off-grid device is electrically connected to a circuit breaker QF2, the circuit breaker QF2 is connected in parallel with the circuit breaker QF1, and the circuit breaker QF2 is electrically connected to a load LOAD2 through circuit breakers QFg2 and QFb2.

2. The uninterruptible power supply optimization and control device for repairing low-voltage distribution station area according to claim 1 is characterized in that: The circuit breaker QF2 is electrically connected to the load LOAD3 through the circuit breakers QFg3 and QFb3.

3. The uninterruptible power supply optimization and control device for repairing low-voltage distribution station area according to claim 1 is characterized in that: The power generation vehicle is a 250KW power generation vehicle.

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