Metering box and electricity utilization acquisition system

Abstract

The utility model relates to a metering box and an electricity utilization acquisition system, and belongs to the field of electric energy metering. At least two conventional electric energy meters used for realizing electric energy metering are arranged in the metering box, an environmental parameter acquisition sensor and a guide rail type electric energy meter are further arranged in the metering box, and an electric energy input port of the guide rail type electric energy meter is connected with a power inlet wire in the metering box in a mutual inductor access mode. An electric energy output port of the guide rail type electric energy meter is connected with a power supply interface of the environmental parameter acquisition sensor, and a communication port of the guide rail type electric energy meter is connected with a data output interface of the environmental parameter acquisition sensor. The system comprises a concentrator and at least two metering boxes, wherein the guide rail type electric energy meter in each metering box is in communication connection with the concentrator. According to the utility model, the electricity utilization reliability of acquisition equipment can be ensured; moreover, during the installation, the traditional wiring operation is not needed, the power supply incoming line is not needed to be cut off, the installation process is simpler and faster, and the installation efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric energy measurement, concretely relates to a metering box and electricity collection system. BACKGROUND

[0002] In recent years, the frequency and intensity of global extreme weather events have increased significantly, and high temperature and heavy rain weather have caused many adverse effects on society and economy. For example, the damage to the measurement equipment inside the metering box caused by water entering the metering box or internal line fire is huge. In addition, as an important part of the power system, communication system and industrial equipment, the temperature and humidity environment is an important external factor affecting the performance and service life of the internal equipment of the metering box. Its influence is specifically reflected in the following aspects: 1) change of measurement equipment precision, the measurement precision of precision equipment such as electric energy meter, voltage transformer and current transformer contained in the metering box is significantly affected by temperature and humidity change. 2) insulation performance of the insulation material used in the shell and internal equipment of the metering box decreases with the increase of environmental humidity, which may cause arc fault and increase the risk of electric leakage. 3) stability of mechanical structure, metal parts (such as wiring terminals, bolts, etc.) in the metering box are easy to be oxidized and electrochemically corroded in high humidity environment, thereby reducing the mechanical strength and electrical connection reliability. 4) condensation phenomenon and mold growth, when there is a large temperature difference between the inside and outside of the metering box (for example, low temperature in winter and heat generated in the box when the equipment is running), condensate may appear in the box, causing equipment short circuit or corrosion. Under high temperature and high humidity environment, mold is easy to breed, which can damage the insulation material and sealing performance of the metering box.

[0003] Therefore, it is necessary to set sensor equipment for collecting environmental parameters in the metering box, such as temperature and humidity sensor, water immersion sensor, smoke sensor, etc., to timely perceive the environmental condition and transmit the collected environmental parameters to the background in time to make abnormal early warning when the environmental condition is relatively bad, so as to inform the maintenance personnel to maintain and overhaul in time.

[0004] However, when the old metering box is modified, due to the lack of equipment for transmitting the information collected by the sensor to the background in the old metering box, the equipment with the data information transmission function needs to be installed at the same time when the environmental parameter collection device is installed. However, in the prior art, a special collection terminal is usually connected with each sensor to upload the collected information, but the environmental parameter collection device composed of the special collection terminal and each sensor is either powered by a battery, such as the Chinese utility model patent with the publication number CN216209370U, or uses the power on the electrical line in the meter box, such as the Chinese utility model patent with the publication number CN213181697U which uses an UPS uninterrupted power supply system. If the battery is used for power supply, the battery needs to be replaced frequently, which is not only troublesome but also unreliable in power supply. If the power on the incoming line of the meter box is used for power supply, the power supply line needs to be connected during installation, which increases the difficulty of modification of the old metering box and reduces the modification efficiency. Utility model content

[0005] The utility model discloses a metering box and electricity collection system, to solve the problem of low modification efficiency and unreliable power supply of the metering box after modification when the old metering box is modified.

[0006] The utility model discloses a metering box and electricity collection system, to solve the problem of low modification efficiency and unreliable power supply of the metering box after modification when the old metering box is modified.

[0007] Further, the environmental parameter collection sensor includes a temperature and humidity sensor and a water immersion sensor, and the environmental parameter collection sensor is installed in the metering box by wall mounting.

[0008] Further, the environmental parameter collection sensor is installed on the guide rail in the metering box.

[0009] Further, the metering box is also provided with a smoke sensor, and the smoke sensor is installed on the top of the metering box.

[0010] The utility model discloses a metering box and electricity collection system, to solve the problem of low modification efficiency and unreliable power supply of the metering box after modification when the old metering box is modified. The utility model discloses a metering box and electricity collection system, to solve the problem of low modification efficiency and unreliable power supply of the metering box after modification when the old metering box is modified.

[0011] The utility model discloses a power consumption collection system that solves the above technical problem includes concentrator and at least two metering boxes, and at least two conventional electric energy meters for realizing electric energy measurement are arranged in each metering box;Environment parameter acquisition sensor and guide rail type electric energy meter are also provided in each metering box, and the electric energy input port of guide rail type electric energy meter is connected metering box incoming line through mutual inductor access mode, and the electric energy output port of guide rail type electric energy meter is connected with the power supply interface of environment parameter acquisition sensor, and the communication port of guide rail type electric energy meter is connected with the data output interface of environment parameter acquisition sensor;The guide rail type electric energy meter in each metering box is communicated with the concentrator.

[0012] Further, the environment parameter acquisition sensor includes temperature and humidity sensor and water immersion sensor, and the environment parameter acquisition sensor is installed in the metering box through wall hanging.

[0013] Further, the environment parameter acquisition sensor is installed on the guide rail in the metering box.

[0014] Further, the metering box also is provided with smoke sensor, and the smoke sensor is installed at the top of the metering box.

[0015] The utility model discloses a guide rail type electric energy meter is arranged in the metering box, and the guide rail type electric energy meter is connected power incoming line through mutual inductor access mode, on one hand, it utilizes power line voltage power supply, guarantees that electric reliability can be used, on the other hand, when installing, need not carry out traditional wiring operation, also need not to the power incoming line power off, and installation process is more simple and fast, thereby greatly improve the installation efficiency, and also can not affect normal power utilization of user. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the internal composition schematic diagram of metering box based on guide rail type electric energy meter of the utility model embodiment;

[0017] Figure 2 It is the bottom port schematic diagram of some model guide rail type electric energy meter of the utility model embodiment;

[0018] Figure 3 It is the appearance schematic diagram of some model guide rail type electric energy meter of the utility model embodiment;

[0019] Figure 4 It is the power consumption collection system schematic diagram of the utility model embodiment;

[0020] Figure 5 It is the internal composition schematic diagram of metering box based on measurement switch of the utility model embodiment;

[0021] Figure 6It is a measurement switch terminal schematic diagram of the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The specific embodiment of the utility model is further explained below in combination with the drawings.

[0023] The basic idea of the utility model is: for some old metering boxes, the electric energy meter in the metering box is ordinary and conventional, and does not have the function of collecting data information of the transmission sensor. Therefore, when the existing inventory metering box is modified, the environmental parameter acquisition sensor is added, and the guide rail type electric energy meter is used as the information collection and transmission equipment, so that the collected environmental condition information is sent to the background for processing.

[0024] The guide rail type electric energy meter is an intelligent electric energy meter installed by using a guide rail, supports a communication interface such as RS485, and supports current primary access and secondary access. The electric energy meter is powered by a power line voltage, and does not need an auxiliary power supply. The current secondary access is that the guide rail type electric energy meter is connected to the power line by a mutual inductor connection mode. Specifically, the guide rail type electric energy meter is connected to the mutual inductor, and when installed, the power supply line is inserted through the center through hole of the mutual inductor, or the center through hole of the mutual inductor is sleeved on the power supply line. In this way, the guide rail type electric energy meter does not need to be connected by traditional wiring during installation, and the power supply line does not need to be powered off, so that the installation process is more simple and fast, thereby greatly improving the installation efficiency, and without affecting the normal power consumption of the user.

[0025] Metering box embodiment

[0026] Based on the above basic idea, as shown in the figure, Figure 1 The utility model discloses a metering box, which comprises at least two conventional electric energy meters for realizing electric energy metering, and the conventional electric energy meters are connected to corresponding load power supply lines respectively. The metering box further comprises an environmental parameter acquisition sensor and a guide rail type electric energy meter. The electric energy input port of the guide rail type electric energy meter is connected to the power supply line in the metering box by current secondary access. The electric energy output port of the guide rail type electric energy meter is connected to the power supply interface of the environmental parameter acquisition sensor. The communication port of the guide rail type electric energy meter is connected to the data output interface of the environmental parameter acquisition sensor.

[0027] Figure 2 、 3 The figure shows a guide rail type electric energy meter of a certain model, wherein, Figure 2 The bottom interface of the guide rail type electric energy meter has a communication interface, an RS485 interface and a CAN port. The electric energy output port is a 12V voltage output terminal. The terminals for connecting the mutual inductor are A phase, B phase, C phase and N (neutral) four voltage terminals. Figure 2The 5V output terminal on the lower right is used to power the Rogowski coil. Terminal S1 is used for Rogowski coil integration type identification, terminal S2 is the correction coefficient reading communication line, la+, lb+, and lc+ are the current input terminals for phases a, b, and c, respectively, and la-, lb-, and lc- are the current output terminals for phases a, b, and c, respectively. When this DIN rail type energy meter is installed in a metering box, it is connected to the power supply line via a mutual inductance connection. The mutual inductor is a Rogowski coil current transformer, which is connected to the power supply via a phoenix terminal. Figure 2 Connect the four voltage terminals (A-phase, B-phase, C-phase, and N (neutral) as shown. Connect the 12V voltage output terminal to the power supply interface of the environmental parameter acquisition sensor via a cable. Connect the RS485 interface to the data output interface of the environmental parameter acquisition sensor via a communication cable. The Rogowski coil of the Rogowski coil current transformer can be made into an openable structure. When the power input line is connected, it is opened, and the Rogowski coil is closed by wrapping around the power input line, realizing power extraction through the Rogowski coil.

[0028] Preferably, the environmental parameter acquisition sensor includes a temperature and humidity sensor and a water immersion sensor. The power supply interfaces of the temperature and humidity sensor and the water immersion sensor are connected to the power output port of the DIN rail-mounted energy meter, using the 12V voltage output from the DIN rail-mounted energy meter for power supply. The data transmission interfaces of the temperature and humidity sensor and the water immersion sensor are connected to the two 485 interfaces of the DIN rail-mounted energy meter. The environmental parameter acquisition sensor is wall-mounted in an unused space within the metering box.

[0029] Preferably, for ease of installation, the temperature and humidity sensor and the water immersion sensor can be installed on a guide rail inside the metering box. This guide rail is the same one used for mounting a rail-mounted energy meter, allowing the environmental parameter acquisition sensor to be installed close to the rail-mounted energy meter, saving space and connecting cables, and reducing the installation cost of the environmental parameter acquisition sensor.

[0030] Preferably, a smoke sensor is also installed inside the metering box, mounted on the top of the metering box. The smoke sensor can be powered and transmit data using a rail-mounted energy meter. However, since smoke sensors are typically mounted on the top of the metering box, and rail-mounted energy meters are usually mounted on the rail along with temperature and humidity sensors and water immersion sensors, the distance between the smoke sensor and the rail-mounted energy meter is relatively large, leading to inconvenient wiring. As a preferred embodiment, the smoke sensor is a sensor with built-in Bluetooth functionality, communicating with the rail-mounted energy meter via Bluetooth. Preferably, the smoke sensor is a sensor with its own battery.

[0031] Example of an electricity consumption data acquisition system

[0032] like Figure 4As shown, the power consumption collection system of the embodiment includes a concentrator and at least two meter boxes, at least two conventional electric energy meters for realizing electric energy metering are arranged in each meter box; an environmental parameter collection sensor and a rail-mounted electric energy meter are further arranged in each meter box, an electric energy input port of the rail-mounted electric energy meter is connected to a meter box incoming line through a current secondary access mode, an electric energy output port of the rail-mounted electric energy meter is connected to a power supply interface of the environmental parameter collection sensor, and a communication port of the rail-mounted electric energy meter is connected to a data output interface of the environmental parameter collection sensor; the rail-mounted meter in each meter box is in communication connection with the concentrator.

[0033] Preferably, the environmental parameter collection sensor includes one or both of a temperature and humidity sensor and a water immersion sensor. The power supply interface of the temperature and humidity sensor and the water immersion sensor is connected to the electric energy output port of the rail-mounted electric energy meter, and the temperature and humidity sensor and the water immersion sensor are powered by the 12V voltage output by the rail-mounted electric energy meter; the data transmission interface of the temperature and humidity sensor and the water immersion sensor is connected to the two-way 485 interface of the rail-mounted electric energy meter. The environmental parameter collection sensor is wall-mounted in a spare position in the meter box.

[0034] Preferably, in order to facilitate installation, the temperature and humidity sensor and the water immersion sensor can be installed on a rail in the meter box. The rail is a rail provided for installing the rail-mounted electric energy meter, so that the environmental parameter collection sensor and the rail-mounted electric energy meter can be installed close to each other, saving space and connection cables and reducing the installation cost of the environmental parameter collection sensor.

[0035] Preferably, a smoke sensor is further arranged in the meter box, and the smoke sensor is installed on the top of the meter box. The smoke sensor can be powered and transmit data by the rail-mounted electric energy meter, but the smoke sensor is usually installed on the top of the meter box, while the rail-mounted electric energy meter is usually installed on the rail together with the temperature and humidity sensor and the water immersion sensor, which results in a long distance between the smoke sensor and the rail-mounted electric energy meter, causing inconvenience in wiring. As a preferred embodiment, the smoke sensor is a sensor with Bluetooth function, which communicates with the rail-mounted electric energy meter by Bluetooth. Preferably, the smoke sensor is a sensor with a built-in battery.

[0036] Preferably, the communication mode between the concentrator and the rail-mounted electric energy meter is to exchange data through HPLC in hardware and 698 protocol in software. The concentrator can communicate with the power consumption collection system master station through a 4G module, and inform the State Grid staff of the real-time collected information and abnormal conditions.

[0037] When incrementally modifying the meter box, the ordinary circuit breaker arranged at the power supply incoming line of the meter box can be replaced by a measurement switch. Figure 5The schematic diagram of the metering switch terminal is shown, the voltage output port of the metering switch is connected with the temperature and humidity sensor and the water immersion sensor for power supply, the temperature and humidity sensor and the water immersion sensor are powered by the 12V output voltage of the metering switch, the two-way RS485 interface of the metering switch is respectively connected with the temperature and humidity sensor and the water immersion sensor in communication, so that the information collected by the temperature and humidity sensor and the water immersion sensor is uploaded through the metering switch, as shown in Figure 6 When the metering switch is in communication connection with the concentrator, the HPLC chip is arranged in the two in hardware to realize the communication connection, and the data interaction is realized through the 698 protocol in software.

[0038] In summary, the beneficial effects of the utility model are: 1) Real-time collection of temperature and humidity data in the meter box is realized, and the functions of temperature and humidity, water immersion and smoke anomaly alarm are realized. It is of great significance to cope with extreme weather, and can reduce property loss. The ideal working environment for the equipment in the meter box is provided to the greatest extent, and the metering accuracy and the service life of the equipment are improved. The installation mode of the utility model is simple, and there are two schemes of stock transformation and incremental transformation. In addition, the expansibility of the design is very strong, and the subsequent box alarm, intelligent lock and the like can be developed.

[0039] 2) Subsequent upgrade and maintenance are convenient, when the function needs to be expanded, for the stock transformation meter box, the guide rail type electric energy meter can be upgraded through Bluetooth, and the guide rail type electric energy meter can also be replaced when it fails, and power supply is not required during replacement. For the incremental transformation meter box, the metering switch can be upgraded through the RS485 communication mode, and power supply is not required. When the secondary side of the metering switch fails, the plug-in metering unit of the metering switch can be replaced, and power supply is not required, and the entire switch does not need to be replaced. Therefore, in the process of upgrading and maintenance, power supply is avoided to bring inconvenience to the life of residents.

Claims

1. A metering box in which at least two conventional electric energy meters for implementing electric energy metering are provided, characterized in that, The environmental parameter acquisition sensor comprises a temperature and humidity sensor and a water immersion sensor, and the environmental parameter acquisition sensor is installed in the metering box in a wall-mounted manner.

2. The metering box of claim 1, wherein, The environmental parameter acquisition sensor is installed on a guide rail in the metering box.

3. The metering box of claim 2, wherein, The metering box is further provided with a smoke sensor, and the smoke sensor is installed on the top of the metering box.

4. The metering box of claim 1, wherein, Each metering box is further provided with an environmental parameter acquisition sensor and a guide rail type electric energy meter, an electric energy input port of the guide rail type electric energy meter is connected to a power line in the metering box in a mutual inductor access mode, an electric energy output port of the guide rail type electric energy meter is connected to a power supply interface of the environmental parameter acquisition sensor, and a communication port of the guide rail type electric energy meter is connected to a data output interface of the environmental parameter acquisition sensor; the guide rail type electric energy meters in the metering boxes are in communication connection with the concentrator.

5. An electricity collection system comprising a concentrator and at least two metering boxes, each of which is provided with at least two conventional electric energy meters for implementing electric energy metering; characterized in that, The environmental parameter acquisition sensor comprises a temperature and humidity sensor and a water immersion sensor, and the environmental parameter acquisition sensor is installed in the metering box in a wall-mounted manner.

6. The power consumption collection system of claim 5, wherein, The environmental parameter acquisition sensor is installed on a guide rail in the metering box.

7. The power consumption collection system of claim 6, wherein, The metering box is further provided with a smoke sensor, and the smoke sensor is installed on the top of the metering box.

8. The power consumption collection system of claim 5, wherein, ​

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