Intelligent interface equipment for accessing distributed power supply to low-voltage power distribution network

Abstract

The utility model relates to the technical field of low-voltage power distribution network access equipment, and discloses intelligent interface equipment for accessing a distributed power supply to a low-voltage power distribution network, which comprises an interface equipment body, and a metering chamber II, an observation chamber and a circuit breaker chamber which are arranged at the rear part of the interface equipment body from top to bottom, a safety protection plate is arranged on the side, facing a worker, of the observation chamber, an observation window is formed in the safety protection plate, a bus chamber, an instrument chamber, a main circuit breaker chamber, a first metering chamber and an intelligent terminal chamber are arranged on the front portion of the interface equipment body from top to bottom, and the intelligent terminal chamber is provided with a communication device, an acquisition device and an intelligent control device. The communication device is in communication connection with the upper computer through the communication module, the acquisition device is used for monitoring electrical equipment and a meter in the interface equipment body and uploading monitored data to the upper computer through the communication module, and the intelligent control device performs local / remote adjustment and control on the electrical equipment in the interface equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of low - voltage distribution network access equipment, and particularly relates to an intelligent interface device for connecting distributed power sources to a low - voltage distribution network. Background Art

[0002] In the field of power systems, traditional low - voltage distribution network access equipment, as a key device connecting distributed power sources and the power grid, undertakes important responsibilities such as measurement, metering, control, protection, and safe operation.

[0003] However, the existing low - voltage distribution network access equipment often neglects the safety of staff in its structural design, and there are the following problems:

[0004] 1. To meet the needs of users' independent metering, existing low - voltage distribution network access equipment usually adds user metering meters at the rear. However, due to the compact internal space layout and complex wiring of low - voltage distribution network access equipment, the metering meters and the distributed power grid grid - connected circuit breakers are forced to be installed adjacent to the exposed live copper bars. Although this layout reduces the production cost of existing low - voltage distribution access equipment, it also increases the difficulty of electrical operations. More seriously, when staff perform maintenance or operations, they are extremely likely to cause electric shock accidents due to accidental contact with live parts, endangering personal safety. In addition, the narrow operation space limits the efficiency of fault troubleshooting and daily maintenance, increasing the operation cost and risk of the power system.

[0005] 2. When the communication devices in existing low - voltage distribution network access equipment are installed and arranged, they are usually mixed and installed in the same area as the high - voltage part, resulting in electromagnetic interference from the primary electricity to the communication devices.

[0006] To sum up, the internal structure design of existing low - voltage distribution network access equipment has defects such as few functional areas and low space resource utilization rate, and there are problems of electric shock risk and electromagnetic interference from primary electricity to communication devices.

[0007] Therefore, there is an urgent need for an intelligent interface device for connecting distributed power sources to a low - voltage distribution network, which can optimize the internal structure of the low - voltage distribution network access equipment, realize the functions of safety isolation and efficient operation, thereby completely avoiding the electric shock risk and preventing electromagnetic interference from primary electricity to communication devices. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide an intelligent interface device for connecting distributed power sources to a low - voltage distribution network, which can optimize the internal structure of the low - voltage distribution network access equipment through spatial methods, realize the functions of safety isolation and efficient operation, thereby completely avoiding the electric shock risk and preventing electromagnetic interference from primary electricity to communication devices.

[0009] The basic solution provided by the present utility model: An intelligent interface device for a distributed power source to access a low-voltage distribution network, including an interface device body. The rear part of the interface device body is successively provided with a metering chamber two for installing a user meter, an observation chamber, and a circuit breaker installation chamber from top to bottom.

[0010] A safety guard plate is provided on the side of the observation chamber facing the staff, and a transparent observation window is opened on the safety guard plate.

[0011] The front part of the interface device body is successively provided with a bus chamber, an instrument chamber, a main circuit breaker chamber, a metering chamber one, and an intelligent terminal chamber from top to bottom. A communication device, a collection device, and an intelligent control device are arranged in the intelligent terminal chamber. Among them, the communication device is communicatively connected to a host computer through a communication module. The collection device is used to monitor the electrical equipment and meters in the interface device and upload the monitored data to the host computer through the communication module. The intelligent control device performs local / remote adjustment and control on the electrical equipment in the interface device.

[0012] The principle and advantages of the present utility model are as follows: In this solution, first, the metering chamber two, the observation chamber, and the circuit breaker installation chamber are divided to achieve mutual isolation between each chamber. Then, the staff can directly view the user meter in the metering chamber two above the rear part of the interface device body, thus realizing the meter reading work of the user meter. For existing low-voltage distribution network access devices, users need to set the user meter on the back of the interface device body, and at the same time, the grid-connected circuit breaker of the distributed power source is also installed in the space on the back, resulting in a safety hazard that the staff may touch the exposed live copper bus when maintaining and operating the meter and the circuit breaker. This application isolates the user meter from the main circuit breaker by setting the metering chamber two, thus avoiding the danger of electric shock when the staff operates the user meter inside the interface device body.

[0013] At the same time, through the setting of the observation chamber and the safety guard plate provided on the side of the observation chamber facing the staff, the possibility of physically contacting the exposed live metal is isolated, avoiding the possibility of electric shock to the staff. Through the setting of the observation window, it is convenient for the staff to directly observe the operation state of the equipment without disassembling the safety guard plate, thus further avoiding the possibility of directly contacting the exposed live metal.

[0014] Compared with the existing technology, the communication device and the strong electric part are mixed at the rear of the interface device body, without spacing control and shielding means. This solution sets the communication device, collection device, and intelligent control device in the front intelligent terminal room, thereby isolating the communication device, collection device, and intelligent control device from other devices. Since the intelligent terminal room is set at the bottom of the front, the communication device, collection device, and intelligent control device maintain the maximum distance from other devices, so that the communication device, collection device, and intelligent control device are not subject to electromagnetic interference. The intelligent control device performs local / remote adjustment and control of the electrical equipment in the interface device, realizing the "five remote" functions of telemetry, remote control, remote adjustment, remote signaling, and remote pulse.

[0015] In the process of new electric energy production, transmission and distribution, the safety, reliability and advancement of the interface equipment itself are comprehensively considered, the resources of the equipment space are sorted and reallocated, the internal structure is optimized, and more functional areas are added to maximize the utilization of resources in the limited space of the equipment.

[0016] Furthermore, the safety protection range of the safety guard plate is 680 mm to 1350 mm above the ground.

[0017] Beneficial effect: In this solution, the safety protection range corresponding to the safety guard plate is 680mm to 1350mm above the ground, which exceeds the height at which electric shock may occur for an average human body.

[0018] Furthermore, the back of the intelligent terminal room is a grounded steel plate.

[0019] Beneficial effect: In this solution, the back of the intelligent terminal room is a grounded steel plate, which isolates the intelligent terminal room from the rear of the interface device body, thereby further shielding electromagnetic interference.

[0020] Furthermore, a dedicated cable channel is provided on the side of the interface device body.

[0021] Beneficial effect: by setting up the cable dedicated channel, the interface device body has two access modes: top-in and top-out, and bottom-in and top-out.

[0022] Furthermore, the intelligent control device includes an I / O module.

[0023] Beneficial effects: local / remote adjustment and control of electrical equipment in the interface device can be achieved through the I / O module.

[0024] Furthermore, the communication module is a wireless communication module.

[0025] Beneficial effects: Wireless communication does not require wiring and is easy and convenient to deploy.

[0026] Further, the wireless communication module includes one or more of a WIFI module, a Bluetooth module, a Zigbee module, a 4G network communication module, and a 5G network communication module.

[0027] Beneficial effects: Multiple networking methods, stronger versatility. Description of the drawings

[0028] Figure 1 It is a structural diagram of the inner side of the intelligent interface device for a distributed power source to access a low-voltage distribution network in Embodiment 1 of the present utility model.

[0029] Figure 2 It is a structural schematic diagram of the rear part of the interface device body in Embodiment 1 of the present utility model.

[0030] Figure 3 It is a partial structural schematic diagram of the interface device body at a certain angle in Embodiment 1 of the present utility model.

[0031] Figure 4 It is a structural schematic diagram of the front part of the interface device body in Embodiment 1 of the present utility model. Specific implementation manners

[0032] The following is further detailed through specific implementation manners:

[0033] The marks in the attached drawings of the specification include: metering chamber II 1, cabinet door 2, user metering meter 3, safety guard plate 4, observation chamber 5, circuit breaker installation chamber 6, State Grid metering mutual inductor 7, busbar chamber 8, instrument chamber 9, main circuit breaker chamber 10, metering chamber I 11, intelligent terminal chamber 12, and special cable channel 13.

[0034] The embodiment is basically as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 : An intelligent interface device for a distributed power source to access a low-voltage distribution network, including an interface device body. The rear part of the interface device body is sequentially provided with a metering chamber II 1 for installing a user metering meter 3, an observation chamber 5, a circuit breaker installation chamber 6, and a special cable channel 13 from top to bottom;

[0035] The front part of the interface device body is sequentially provided with a busbar chamber 8, an instrument chamber 9, a main circuit breaker chamber 10, a metering chamber I 11, and an intelligent terminal chamber 12 from top to bottom;

[0036] Among them, a cabinet door 2 is provided at the positions of the observation chamber 5 and the circuit breaker installation chamber 6 at the rear part of the interface device body.

[0037] A safety guard plate 4 is provided on the side of the observation room 5 facing the staff, and a transparent observation window is provided on the safety guard plate 4. In this embodiment, the safety protection range of the safety guard plate 4 is 680 mm to 1350 mm above the ground. In this embodiment, a corresponding national grid metering transformer 7 is provided in the observation room 5.

[0038] The intelligent terminal room 12 is provided with a communication device, a collection device, a transmission device, a transfer storage device, and an intelligent control device. Among them, the communication device is connected to the host computer through a communication module, and the collection device is used to monitor the electrical equipment and the meter 3 in the interface device body, and upload the monitored data to the host computer through the communication module. The intelligent control device performs local / remote adjustment and control on the electrical equipment in the interface device body, and realizes the "five remote" functions of telemetry, remote control, remote adjustment, remote signaling, and remote pulse. The collection device mainly monitors the parameters and status of the electrical equipment in the interface device body, and also monitors the meter 3. The intelligent control device includes an I / O module.

[0039] The metering room 11 is provided with a meter of the power supply bureau. The communication module is a wireless communication module. The wireless communication module includes one or more of a WIFI module, a Bluetooth module, a Zigbee module, a 4G network communication module, and a 5G network communication module. In this embodiment, the wireless communication module adopts a 4G network communication module. The upper computer can be a host, a cloud server, etc. The back of the intelligent terminal room 12 is a grounded steel plate. In this embodiment, the corresponding acquisition device can realize the monitoring of the electrical parameters of each power generation branch circuit and the total electrical parameters, and the corresponding parameter monitoring is realized specifically through a multi-function meter.

[0040] Taking into account the different scenarios of the original distribution room or distribution site when the user uses the corresponding interface device body, a dedicated cable channel 13 is provided on the side of the interface device body, so that the interface device body has two access modes: top-in and top-out, and bottom-in and top-out.

[0041] The metering room 2, observation room and circuit breaker installation room are divided to achieve mutual isolation between the rooms. Then the staff can directly check the user meter in the metering room 2 above the rear of the interface device body to realize the meter reading of the user meter. When the staff opens the cabinet door to observe the operating status of the equipment, they can directly observe through the observation window. The staff is isolated from the exposed live metal by setting the safety guard plate to avoid the possibility of direct contact with the exposed live metal. The communication device is set in the front intelligent terminal room to achieve isolation of the communication device from other devices. Since the intelligent terminal room is set at the bottom of the front, the communication device is kept at the maximum distance from other devices, so that the communication equipment is not affected by electromagnetic interference.

[0042] The above are only the embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the filing date or the priority date, are able to obtain all the prior art in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. An intelligent interface device for connecting a distributed power source to a low-voltage distribution network, characterized in that: It comprises an interface device body, and the rear part of the interface device body is provided with a second metering room for installing a user meter, an observation room and a circuit breaker installation room in sequence from top to bottom; A safety guard plate is provided on the side of the observation room facing the staff, and a transparent observation window is provided on the safety guard plate; The front part of the interface device body is provided with a busbar room, an instrument room, a main circuit breaker room, a metering room 1 and an intelligent terminal room in order from top to bottom; The smart terminal room is provided with a communication device, a collection device and an intelligent control device, wherein the communication device is connected to the host computer through a communication module, the collection device is used to monitor the electrical equipment and meters in the interface device body, and upload the monitored data to the host computer through the communication module, and the intelligent control device performs local / remote adjustment and control on the electrical equipment in the interface device body.

2. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 1, characterized in that: The safety protection range of the safety guard plate is 680 mm to 1350 mm above the ground.

3. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 2, characterized in that: The back of the intelligent terminal room is a grounded steel plate.

4. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 3, characterized in that: A dedicated cable channel is arranged on the side of the interface device body.

5. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 4, characterized in that: The intelligent control device includes an I / O module.

6. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 5, characterized in that: The communication module is a wireless communication module.

7. The intelligent interface device for connecting a distributed power source to a low-voltage distribution network according to claim 6, characterized in that: The wireless communication module includes one or more of a WIFI module, a Bluetooth module, a Zigbee module, a 4G network communication module, and a 5G network communication module.

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