CN206364577U - A kind of distributed electricity system of looped network case - Google Patents

Abstract

The utility model discloses a distributed power consumption system of a ring net box, which comprises a dual power switching device installed in the ring net box, one end of the dual power switching device is connected with a PT power supply device, and the other end is connected with a solar power supply System connection; also includes an electric measuring device, which is used to detect whether the busbar is de-energized or whether the PT power supply device is de-energized, and controls the dual power supply switching device when the bus-bar de-energizes or the PT power supply device is de-energized The switch in the switch is switched to the end connected with the solar power supply system. The distributed power consumption system of the ring net box provided by the utility model realizes the automatic switching of the dual power supply switching device through the real-time monitoring of the electric measuring device, and improves the safe and reliable operation of the ring net box, and the system Easy to operate, easy to maintain, environmentally friendly and energy-saving, suitable for large-scale promotion and application, and can effectively guarantee the safety of power grid operation.

Description

A ring net box distributed power system

technical field

The utility model relates to the field of power supply equipment of a ring net box, in particular to a distributed power consumption system of a ring net box.

Background technique

At present, there are three main ways for the power supply system of the ring net box in operation: (1) The ring net box has a PT cabinet (voltage transformer cabinet), without DTU (distribution automation terminal), and the PT secondary side of the PT cabinet is 220V Power supply, shunt switch for ring cage lighting, environmental monitoring system (including environmental temperature and humidity monitoring, ozone concentration monitoring, smoke detection, illegal intrusion monitoring, water intrusion monitoring, contact temperature monitoring in the cabinet, video monitoring, intelligent dehumidification in the cabinet control, ventilation control, lighting control), switch control operating power supply; (2) ring net box with PT+DTU box, powered by PT secondary side 220V power supply of PT cabinet, shunt switch for ring net box lighting, environmental control system, Distribution automation terminal power supply, DTU DC power supply for switch control operation power supply; (3) There is no PT cabinet and DTU in the ring net box, and there is no station power supply in the ring net box.

However, when the busbar of the ring net box loses power or the PT cabinet fails, the power supply system will be cut off, and normal power supply for lighting, environmental monitoring and switch control cannot be guaranteed. energy saving.

In addition, at present, some ring cages are not equipped with a power supply, which cannot provide normal power supply for lighting, environmental monitoring and switch control, and cannot guarantee the safe and reliable operation of the ring cage.

Therefore, how to improve the reliability of the power consumption of the ring net box is a technical problem that those skilled in the art need to solve at present.

Utility model content

The purpose of this utility model is to provide a distributed power consumption system of the ring net box. The distributed power consumption system of the ring net box can effectively prevent the reverse transmission of electric energy by setting a single pole double throw switching device, and can realize automatic switching and ensure environmental protection. The safe and reliable operation of the cage.

In order to achieve the above object, the utility model provides the following technical solutions:

A distributed power consumption system of a ring net box, including a dual power supply switching device installed in the ring net box, one end of the dual power supply switching device is connected to a PT power supply device, and the other end is connected to a solar power supply system; it also includes The electric measuring device is used to detect whether the bus bar is de-energized or whether the PT power supply device is de-energized, and controls the switch in the dual-power switching device to switch to One end connected with the solar power supply system.

Preferably, the solar power supply system includes a solar module, a battery module and a solar power supply management device. The solar power supply management device is provided with a solar module input port and a battery module interface. The component supplies power or the storage battery component supplies power, and the solar power supply management device can deliver the electric energy of the solar component to the storage battery component for charging; the electric measuring device is connected to the output terminal of the solar power supply management device.

Preferably, the solar power supply management device is specifically a UPS uninterruptible power supply.

Preferably, an inverter power supply device is connected to the output end of the solar power supply management device, and the inverter power supply device is connected to one end of the dual power supply switching device.

Preferably, the output terminal of the solar power supply management device is also connected to a switch-controlled operating power supply, and the switch-controlled operating power supply is used to switch the power supply of the solar module or the battery module.

Preferably, the solar module includes at least 8 solar photovoltaic panels, and at least 4 of the solar photovoltaic panels are folding photovoltaic panels that can be raised and lowered to supplement power supply.

Preferably, the storage battery assembly includes at least 8 sets of batteries with a voltage of 12V and a capacity of 250Ah.

Preferably, the electrical measuring device includes a current sensor, a voltage sensor and a detection device, the current sensor is used to detect the load current, the voltage sensor is used to detect the voltage of the PT power supply device, and the detection device is used to detect the load current in real time Detecting the detection results of the current sensor and the voltage sensor, and judging whether the bus bar is powered off or the PT power supply device is powered off, and when the bus bar is powered off or the PT power supply device is powered off, the dual power supply The switching device sends a switching signal.

Preferably, the dual power supply switching device includes a switching component and a control component, the control component can send an action instruction to the switching component after receiving the switching signal, and the switching component receives the action After the command, switch the switch to the end connected to the solar power supply system.

Preferably, the output end of the dual power supply switching device is connected to the lighting components, the environment monitoring system and the DTU in the ring net box.

The distributed power system of the ring net box provided by the utility model includes a dual power switching device installed in the ring net box, one end of the dual power switching device is connected to the PT power supply device, and the other end is connected to the solar power supply system connection; also includes an electric measuring device, which is used to detect whether the busbar is de-energized or whether the PT power supply device is de-energized, and controls the dual power switching device when the bus-bar de-energizes or the PT power supply device is de-energized The switch is switched to the end connected with the solar power supply system. In the ring net box distributed power system, by setting the dual power switching device and the electrical measuring device in the ring net box, under normal conditions, the dual power switching device communicates with the PT power supply device , when the electric measuring device detects that the PT power supply device fails, or when the bus is powered off, it can send a switching signal to the dual power switching device, and the dual power switching device switches the power supply to The solar power supply system, through the real-time monitoring of the electric measuring device, realizes the automatic switching of the dual power supply switching device, improves the safe and reliable operation of the ring cage, and the system is easy to operate, easy to maintain, and environmentally friendly Energy-saving, suitable for large-scale promotion and application, and can effectively guarantee the safety of power grid operation.

In a preferred embodiment, the electric measuring device includes a current sensor, a voltage sensor and a detection device, the current sensor is used to detect the load current, the voltage sensor is used to detect the voltage of the PT power supply device, the The detection device is used to detect the detection results of the current sensor and the voltage sensor in real time, and judge whether the bus bar is powered off or whether the PT power supply device is powered off. When the bus bar is powered off or the PT power supply device is powered off Send a switching signal to the dual power switching device. The above configuration, by setting the current sensor and the voltage sensor, can realize the automatic detection of the electrical measuring device, and at the same time, the electrical measuring device can send the switching signal to the dual power switching device to realize the The automatic switching of the dual power supply switching device is described, with a high degree of automation and high control precision, ensuring the safe and reliable operation of the ring cage.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a specific embodiment of the ring cage distributed power system provided by the utility model.

detailed description

The core of the utility model is to provide a distributed power consumption system of the ring net box. The distributed power consumption system of the ring net box can realize automatic switching by setting a single-pole double-throw switching device to ensure the safe and reliable operation of the ring net box , At the same time, solar energy is used as the energy source, which is environmentally friendly and energy-saving.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, Fig. 1 is a structural schematic diagram of a specific embodiment of the ring cage distributed power system provided by the present invention.

In this embodiment, the ring net box distributed power system includes a dual power switching device installed in the ring net box, one end of the dual power switching device is connected to a PT power supply device, and the PT power supply device is specifically connected to the busbar The 220V power supply on the secondary side of the PT, and the other end of the dual power switching device is connected to the solar power supply system; When any of the two situations of bus power failure or PT power supply device power failure occurs or occurs simultaneously, the electrical measuring device controls the switch in the dual power switching device to switch to the end connected to the solar power supply system, that is, the power is supplied by the bus. Switch to being powered by a solar powered system.

Specifically, in the distributed power consumption system of the ring net box, a dual power switching device and an electrical measuring device are installed in the ring net box. Under normal conditions, the dual power switching device is connected with the PT power supply device. When the electrical measuring device When a failure of the PT power supply device is detected, or when the busbar is powered off, a switching signal can be sent to the dual power switching device, and the dual power switching device will switch the power to the solar power supply system, which is monitored in real time by the electrical measuring device , realize the automatic switching of the dual power switching device, improve the safe and reliable operation of the ring net box, and the system is easy to operate, easy to maintain, environmentally friendly and energy-saving, suitable for large-scale promotion and application, and can effectively ensure the safety of power grid operation.

Further, the solar power supply system includes a solar component, a storage battery component and a solar power supply management device. The solar power supply management device is provided with a solar component input port and a storage battery component interface. The solar power supply management device can be switched to be powered by the solar component or the storage battery component, and the solar The power supply management device can transmit the electric energy of the solar module to the storage battery component for charging; the electric measuring device is connected to the output end of the solar power supply management device, that is, the electric measuring device is connected to the DC output end of the solar power supply management device.

In the above solar power supply system, the solar power supply management device can switch whether to supply power from the solar module or the battery module. Specifically, the solar power supply management device judges according to the power generation of the solar module. Under the following conditions, that is, when the solar energy has enough energy, it will be directly powered by the solar module. When there is not enough solar energy, the solar power supply management device will automatically switch to the battery module for power supply. The electrical energy of the solar module is sent to the battery module.

Further, the solar power supply management device is specifically a UPS uninterruptible power supply. The UPS uninterruptible power supply can provide uninterrupted power supply to the electrical devices in the ring net box, and the power supply is stable, so that the load can maintain normal operation and protect the load software and hardware from damage.

Furthermore, the solar power supply management device has multiple output interfaces, and one of the output structures is connected with an inverter power supply device, which can convert the direct current of the solar power supply management device into alternating current for use by the load. The inverter power supply device is connected to one end of the dual power supply switching device, and the inverter power supply device is a connecting bridge between the solar power supply system and the dual power supply switching device.

More specifically, the output terminal of the solar power supply management device is a DC output terminal, and the output voltage is a DC voltage of 48V, and the output terminal of the inverter power supply device is an AC output terminal, and the output voltage is an AC voltage of 220V.

Preferably, the inverter power supply device uses a 48V/4000W inverter component.

In addition, the output interface of the solar power supply management device is also connected with a switch control operation power supply, which is used to switch the power supply of solar modules or battery components. Specifically, the switch control operation power supply can be set in the solar power supply management device by controlling The double-throw switch in the adjustment.

In the solar system, the power supply switching between the solar module and the storage battery module can be realized through the switch control operation power supply. In addition, the dual power switching device can also realize the PT power supply device through the detection results of the electric measuring device. Switching between the solar power supply system, a variety of cooperation methods, strong applicability, can meet the different power consumption needs of the ring net box, ensure safe and reliable power consumption, and be environmentally friendly.

On the basis of the above-mentioned embodiments, the solar module includes at least 8 solar photovoltaic panels, and at least 4 solar photovoltaic panels are folding photovoltaic panels, and the remaining solar photovoltaic panels are fixed photovoltaic panels, and the folding photovoltaic panels can be raised and lowered to match the fixed photovoltaic panels. boards on the same plane to supplement the power supply. Specifically, the solar module is preferably composed of 8 pieces of 250W polysilicon solar photovoltaic panels, symmetrically designed as a "herringbone" structure, each side is composed of 4 solar photovoltaic panels, one side has an automatic lifting function, and when the power load is small, the photovoltaic panels are fixed It forms a "herringbone" shape with the folded photovoltaic panel. When the power load is large, the folded photovoltaic panel rises to form a plane with the fixed photovoltaic panel to ensure the power supply requirements. With the above settings, when the power required by the electrical device is low, it is not necessary to rely on the folding photovoltaic panel, but only by fixing the photovoltaic panel to generate electricity. When the power required by the electrical device is high, the folding photovoltaic panel can be raised , form an overall plane with the fixed photovoltaic panels to increase power generation, ensure the power consumption of the ring cage, improve applicability, and meet different usage needs.

Further, the storage battery assembly includes at least 8 sets of batteries with a voltage of 12V and a capacity of 250Ah to ensure the power supply demand of 1KW load.

The distributed energy storage device for the ring net box includes solar components, storage battery components, solar power supply management devices, and inverter power supply devices, wherein the solar components and storage battery components are connected to solar power management components, such as UPS, and solar power management components UPS Output direct current DC48V, and input the direct current into the inverter power supply device, and the inverter power supply device will invert the input DC48V and output AC220V power supply.

Specifically, the solar power management device (UPS) outputs DC48V, provides power for the switch control operation power supply and the power supply for the electric measuring device, and inputs it into the inverter power supply device. The inverter power supply device inverts the input DC48V and then outputs AC220V power to the dual power automatic switching device. The dual power automatic switching device has 2 input interfaces, and the PT side power supply is connected to the other input interface of the dual power automatic switching device. Dual power supply The output port of the automatic switching device provides AC220V power supply to the environmental intelligent comprehensive monitoring system, DTU, lighting and other power consumption.

On the basis of the above-mentioned embodiments, the electrical measuring device includes a current sensor, a voltage sensor and a detection device, the current sensor is used to detect the load current, the voltage sensor is used to detect the voltage of the PT power supply device, and the detection device is used to detect the current sensor in real time and The detection result of the voltage sensor, and judges whether the bus is powered off or the PT power supply device is powered off, and sends a switching signal to the dual power supply switching device when the bus is powered off or the PT power supply is powered off.

The above settings, by setting the current sensor and the voltage sensor, can realize the automatic detection of the electrical measuring device, and at the same time, the electrical measuring device can send the switching signal to the dual power switching device to realize the automatic switching of the dual power switching device. High, high control precision, to ensure the safe and reliable operation of the ring cage.

Further, the dual power supply switching device includes a switching part and a control part. The control part can send an action command to the switching part after receiving the switching signal, and the switching part switches the switch to the solar power supply system after receiving the action command. one end.

Furthermore, the output end of the dual power switching device is connected to the lighting components, environmental monitoring system and DTU in the ring net box, and of course, it can also be connected to other loads to provide power for the power-consuming components.

The ring cage distributed power system includes solar modules, solar power management devices, such as UPS, storage battery components, dual power automatic switching devices, inverter power devices, and electrical measurement (voltage, current) devices. The system can effectively Solve the problem of station power supply for ring net box PT cabinets after power failure or without PT cabinets; use distributed clean energy (solar energy) to supply power, effectively save grid energy and reduce line loss; use UPS energy storage technology to improve ring network The safe operation life of the box adopts the single-pole double-throw intelligent switching technology, which effectively prevents the problem of power reverse transmission and ensures the safety of the power grid operation; realizes real-time and online monitoring of state parameters such as line voltage, current, and faults for the ring net box, and monitors the environment through the environmental monitoring system. The monitoring of parameters such as temperature and humidity, odor concentration, illegal intrusion, water intrusion, fire, and contact temperature in the cabinet, the data obtained by the environmental monitoring system and the relevant parameters received by the dual power automatic switching device are summarized by DTU (the environment without DTU Cages are uploaded to the distribution network automation unified platform after being summarized by the environmental monitoring host) and uploaded to the dispatching center, and connected to the distribution network automation unified platform. The system can also remotely perform switch control, ventilation control, lighting control, intelligent dehumidification control in the cabinet and other operations on the unified platform of distribution network automation; it is equipped with video monitoring, and when a fault occurs, it can grasp the scene situation at the first time and make emergency treatment.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above is a detailed introduction to the distributed power system of the ring net box provided by the utility model. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (10)

1. A ring net box distributed electricity system, is characterized in that, comprises the dual power switching device installed in the ring net box, one end of the dual power switching device is connected with the PT power supply device, and the other end is connected with the solar energy Power supply system connection; also includes an electric measuring device, which is used to detect whether the busbar is powered off or whether the PT power supply unit is powered off, and controls the switching of the dual power supply when the busbar is powered off or the PT power supply unit is powered off A switch in the device is switched to the end connected to the solar power supply system. 2. The ring cage distributed power system according to claim 1, wherein the solar power supply system includes a solar module, a storage battery module and a solar power supply management device, and the solar power supply management device is provided with a solar module The input port and the storage battery component interface, the solar power supply management device can be switched to be powered by the solar component or the storage battery component, and the solar power supply management device can deliver the electric energy of the solar component to the storage battery component for charging ; The electrical measuring device is connected to the output end of the solar power supply management device. 3. The ring net box distributed power system according to claim 2, characterized in that, the solar power supply management device is specifically a UPS uninterruptible power supply. 4. The ring net box distributed power system according to claim 2, wherein the output terminal of the solar power supply management device is connected with an inverter power supply device, and the inverter power supply device is connected to the dual power supply One end of the cutting device is connected. 5. The ring net box distributed electricity system according to claim 2, characterized in that, the output terminal of the solar power supply management device is also connected with a switch control operation power supply, and the switch control operation power supply is used to switch the The solar module supplies power or the storage battery module supplies power. 6. The ring net box distributed power system according to claim 2, wherein the solar module includes at least 8 solar photovoltaic panels, and at least 4 of the solar photovoltaic panels can be lifted to supplement power supply Fold photovoltaic panels. 7. The distributed power consumption system of the ring net box according to claim 6, wherein the storage battery assembly includes at least 8 groups of batteries with a voltage of 12V and a capacity of 250Ah. 8. The ring net box distributed power system according to any one of claims 1 to 7, wherein the electrical measuring device includes a current sensor, a voltage sensor and a detection device, and the current sensor is used to detect load current, the voltage sensor is used to detect the voltage of the PT power supply device, and the detection device is used to detect the detection results of the current sensor and the voltage sensor in real time, and determine whether the bus is out of power or the PT power supply device Whether the power is cut off or not, when the bus bar is powered off or the PT power supply device is powered off, a switching signal is sent to the dual power supply switching device. 9. The ring net box distributed power system according to claim 8, characterized in that, the dual power supply switching device includes a switching component and a control component, and the control component can switch after receiving the switching signal An action instruction is sent to the switching component, and the switching component switches the switch to the end connected to the solar power supply system after receiving the action instruction. 10. The distributed power consumption system of the ring net box according to claim 9, wherein the output end of the dual power switching device is connected to the lighting components, the environment monitoring system and the DTU in the ring net box.