District electric energy four-adjustable system

Abstract

The utility model relates to the technical field of electric power systems, in particular to a district electric energy four-adjustable control system, which comprises a district power transmission line, a district meter, a district concentrator, a distributed energy supply device, a user side load device and a plurality of four-adjustable integrated terminals. The transformer area meter and the transformer area concentrator are respectively and electrically connected with the transformer area power transmission line, the distributed energy supply device and the user side load device are respectively and electrically connected with the transformer area power transmission line through the four-fusion integrated terminals, and the transformer area concentrator is connected with the four-fusion integrated terminals through carrier communication. And the transformer area concentrator is in communication connection with the transformer area meter through an RS485 interface. According to the utility model, monitoring regulation and control of the transformer area energy supply / consumption side are carried out through the transformer area concentrator and the four-fusion integrated terminals, unified access control is realized through the four-fusion integrated terminals, high-efficiency data acquisition and remote control are realized, and the power supply electric energy quality and the power supply reliability of the power distribution transformer area are improved.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, specifically to a four-way controllable power supply system for a distribution transformer area. Background Technology

[0002] With the integration of photovoltaic and energy storage devices into distribution substations, and the increasing number of residential loads and charging piles, the power supply structure of distribution substations has become more complex. The power quality and reliability of low-voltage distribution substations directly affect users' production and daily lives.

[0003] To ensure the stability of power quality in distribution transformer substations, power companies require the operation and maintenance management of all connected equipment within these substations. However, distribution transformer substations have a wide range of equipment locations, and the manufacturers, models, interfaces, and communication protocols of the connected equipment and corresponding monitoring devices are numerous, making unified management difficult due to the lack of a unified interface. Furthermore, different devices within a distribution transformer substation require coordination with related measuring switches and circuit breaker protection devices for power regulation, resulting in complex wiring patterns, increased regulation steps, and greater difficulty in regulation within the actual substation. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a four-way controllable power distribution system, comprising a distribution area transmission line, a distribution area meter, a distribution area concentrator, a distributed energy supply device, a user-side load device, and several four-way integrated terminals.

[0005] The distribution area meter and distribution area concentrator are electrically connected to the distribution area transmission line, the distributed energy supply device and the user-side load device are electrically connected to the distribution area transmission line through a four-in-one terminal, the distribution area concentrator is connected to each four-in-one terminal through carrier communication, and the distribution area concentrator is connected to the distribution area meter through an RS485 interface.

[0006] The four-in-one integrated terminal includes a protocol conversion module, a microprocessor, a metering and sampling module, a circuit breaker protection module, and a carrier communication module; the microprocessor is electrically connected to the protocol conversion module, the metering and sampling module, the circuit breaker protection module, and the carrier communication module, respectively.

[0007] In a specific implementation, one end of the distribution area transmission line is electrically connected to the distribution area transformer, and the distribution area meter and the distribution area concentrator are electrically connected to the distribution area transmission line on the output side of the distribution area transformer.

[0008] The outer surface of the four-in-one terminal is provided with input terminals, output terminals and communication interfaces.

[0009] The input terminal of the four-integrated terminal is connected to the output terminal of the distributed energy supply device, and the output terminal is connected to the power transmission line of the distribution area.

[0010] The input terminal of the four-in-one integrated terminal is connected to the power transmission line of the distribution area, and the output terminal is connected to the input terminal of the user-side load device.

[0011] In a specific implementation, the distribution area concentrator adopts a type I concentrator, which can be interconnected with the remote master station network to uniformly upload the centrally collected power data to the remote master station. The operation and maintenance personnel can then perform remote control based on the uploaded power data.

[0012] The distributed energy supply device includes distributed photovoltaic equipment and energy storage equipment.

[0013] The user-side load device includes residential electricity load and charging pile equipment.

[0014] The distributed energy supply device and the user-side load device are respectively connected to the communication interface of the four-in-one integrated terminal via a USB-RJ45 converter cable.

[0015] To ensure effective communication between the distribution area concentrator and the four-in-one integrated terminal, the distribution area concentrator and the four-in-one integrated terminal are also connected via RS485 communication.

[0016] Beneficial effects: This utility model is a four-way controllable power distribution system. It relies on the distribution area concentrator and each four-way integrated terminal to monitor and control the energy supply / consumption side of the distribution area. The four-way integrated terminal realizes unified access control, simplifies the equipment installation and maintenance process, reduces construction and maintenance costs, realizes efficient data acquisition and remote control, improves the power quality and reliability of the power supply in the distribution area, simplifies and reduces the difficulty of control, is easy to use, and ensures the stable operation of the distribution area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the four-controllable power supply system in the power distribution area. Detailed Implementation

[0018] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0019] See Figure 1This embodiment provides a four-way controllable power distribution system, including a distribution area transmission line, a distribution area meter, a distribution area concentrator, a distributed energy supply device, a user-side load device, and several four-way integrated terminals. One end of the distribution area transmission line is electrically connected to the distribution area transformer; the distribution area meter and the distribution area concentrator are electrically connected to the distribution area transmission line; the distributed energy supply device and the user-side load device are respectively electrically connected to the distribution area transmission line through the four-way integrated terminals; the distribution area concentrator is connected to each of the four-way integrated terminals via carrier communication; and the distribution area concentrator and the distribution area meter are connected via an RS485 interface.

[0020] To regulate power supply in the distribution area, the distribution area meters and concentrators are electrically connected to the distribution area transmission lines on the output side of the distribution area transformers. The meters are used to measure and collect voltage and current data from the transformer output to the distribution area transmission lines, determining the transmitted power data. The concentrators receive the transmitted power data collected by the meters via RS485 and acquire equipment data from each integrated terminal via power line carrier communication, including power, voltage, and current parameters, achieving centralized data collection for the distribution area. Simultaneously, the concentrators are Type I concentrators, capable of interconnecting with a remote master station network. The centrally collected power data is uploaded to the remote master station, allowing maintenance personnel to determine the power data of the distribution area transformers, distributed energy supply devices, and user-side load devices based on the uploaded data, enabling remote control. The data is then distributed from the concentrators to each integrated terminal.

[0021] In this embodiment, the distributed energy supply device includes distributed photovoltaic equipment and energy storage equipment; the user-side load device includes residential electricity load and charging pile equipment. The distributed energy supply device is used for distributed grid-connected power generation from the power transmission lines in the distribution area, and to supplement the power supply to the user-side load device when the power supply to the load is insufficient.

[0022] To enable data acquisition and communication between distributed energy supply devices and user-side load devices, the integrated four-in-one terminal is externally equipped with input terminals, output terminals, and a communication interface. The integrated four-in-one terminal connects to the output of the distributed energy supply device via the external input terminals and to the power transmission line of the distribution area via the external output terminals, providing grid-connected input when the distributed energy supply device generates electricity. Furthermore, the integrated four-in-one terminal connects to the power transmission line of the distribution area via the input terminals and to the input of the user-side load device via the output terminals, used for recording power load consumption. The distributed energy supply device and the user-side load device are connected to the communication interface of the integrated four-in-one terminal via a USB-RJ45 adapter cable, allowing for direct data communication without the need for an external interface converter.

[0023] Meanwhile, to enable the four-in-one integrated terminal to identify different communication protocols and upload data, the terminal also includes a protocol conversion module, a microprocessor, a metering sampling module, a circuit breaker protection module, and a carrier communication module. The microprocessor is electrically connected to each of these modules. The four-in-one integrated terminal can collect voltage and current signals from the input terminals in real time through the metering sampling module for energy metering. The protocol conversion module is connected to the communication interface and can receive communication data transmitted via the conversion line and convert the data according to the stored communication protocol. The microprocessor receives signal data transmitted from the metering sampling module and the protocol conversion module, and can transmit the collected signal data to the distribution area concentrator via the carrier communication module, thereby enabling the distribution area concentrator to centrally collect data from multiple four-in-one integrated terminals.

[0024] Furthermore, to regulate the power supply in the distribution area, the distribution area concentrator receives control signals from the remote master station and transmits these signals to the corresponding integrated four-in-one terminal via carrier communication. To ensure effective communication between the distribution area concentrator and the integrated four-in-one terminal, they are also connected via RS485 communication. Upon receiving the control signal, the microprocessor of the integrated four-in-one terminal triggers a circuit breaker module to switch the power supply on and off of the distribution area's transmission lines and the distributed energy supply devices or user-side load devices.

Claims

1. A four-way adjustable power supply system for a transformer substation, characterized in that, It includes the distribution area transmission line, distribution area meter, distribution area concentrator, distributed energy supply device, user-side load device and several four-in-one integrated terminal; The distribution area meter and distribution area concentrator are electrically connected to the distribution area transmission line, the distributed energy supply device and the user-side load device are electrically connected to the distribution area transmission line through a four-in-one terminal, the distribution area concentrator is connected to each four-in-one terminal through carrier communication, and the distribution area concentrator is connected to the distribution area meter through an RS485 interface. The four-in-one integrated terminal includes a protocol conversion module, a microprocessor, a metering and sampling module, a circuit breaker protection module, and a carrier communication module; the microprocessor is electrically connected to the protocol conversion module, the metering and sampling module, the circuit breaker protection module, and the carrier communication module, respectively.

2. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, One end of the distribution area transmission line is electrically connected to the distribution area transformer, and the distribution area meter and the distribution area concentrator are electrically connected to the distribution area transmission line on the output side of the distribution area transformer.

3. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, The outer surface of the four-in-one terminal is provided with input terminals, output terminals and communication interfaces.

4. The four-way adjustable power supply system for transformer substations according to claim 3, characterized in that, The input terminal of the four-in-one integrated terminal is connected to the output terminal of the distributed energy supply device, and the output terminal is connected to the power transmission line of the distribution area.

5. The four-way adjustable power supply system for transformer substations according to claim 3, characterized in that, The input terminal of the four-in-one integrated terminal is connected to the power transmission line of the distribution area, and the output terminal is connected to the input terminal of the user-side load device.

6. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, The concentrator in the distribution area is a Type I concentrator, which can be interconnected with the remote master station network.

7. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, The distributed energy supply device includes distributed photovoltaic equipment and energy storage equipment.

8. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, The user-side load device includes residential electricity load and charging pile equipment.

9. The four-way adjustable power supply system for transformer substations according to claim 3, characterized in that, The distributed energy supply device and the user-side load device are respectively connected to the communication interface of the four-in-one integrated terminal via a USB-RJ45 converter cable.

10. The four-way adjustable power supply system for transformer substations according to claim 1, characterized in that, The area concentrator and the four-in-one integrated terminal are also connected via RS485 communication.

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