CN204359838U - Electric power specially becomes large user's electricity anti-theft system - Google Patents

Abstract

The utility model discloses an anti-stealing system for electric power special variable large users, which comprises a high-voltage electric energy measurement integrated device, a micro-power wireless collector, a special variable user electric energy collection terminal, a low-voltage electric energy measurement device, and a master station of an electric information collection system ;The high-voltage electric energy measurement integrated device measures the active power, reactive power, apparent power and electric energy of the high-voltage side in real time, and transmits the electric energy data to the micro-power wireless collector through the built-in micro-power wireless module; The power data on the special transformer side is transmitted to the power collection terminal of the special transformer user; at the same time, the power data of the low-voltage electric energy metering device is also transmitted to the electric energy collection terminal of the special transformer user; the power data collection terminal of the special transformer user uploads the power data of the high voltage side and the low voltage side To the master station of the electricity consumption information collection system. The utility model has no redundant exposed terminals except the high-voltage voltage and high-voltage current lead wires, and it is difficult to implement the conventional power stealing means on the low-voltage side on the high-voltage side.

Description

Anti-stealing system for large power users

technical field

The utility model relates to an anti-stealing power system for large electric power users.

Background technique

A large part of power transformer users are small and medium-sized smelting enterprises, which have the characteristics of large power consumption and off-peak power consumption. Since the power metering equipment of this kind of power users is generally installed on the low-voltage side of 220V or 57.7V, it is easy to suffer from strong Magnetic interference, short-circuit current acquisition channels, and power factor changes, etc., slow down or reduce the readings of meters; It means a large loss of electric energy, coupled with the difficulty of obtaining evidence or lack of evidence for power replenishment, it has caused relatively large economic losses to the power supply department. There is an urgent need for new technical means to curb the stealing behavior of power users.

Utility model content

The purpose of the utility model is to provide an anti-stealing system for large power users which is not easy to be damaged.

The anti-stealing system for large power users provided by the utility model includes an integrated device for measuring high-voltage electric energy, a micro-power wireless collector, an electric energy collection terminal for special-purpose users, a low-voltage electric energy metering device, and a master station of the power information collection system ;The high-voltage electric energy metering integrated device installed on the high-voltage side measures the active power, reactive power, apparent power and electric energy on the high-voltage side in real time, and transmits the electric energy data to the micro-power wireless collector through the built-in micro-power wireless module; The micro-power wireless collector on the high-voltage side transmits the electric energy data of the high-voltage side to the electric energy collection terminal of the special transformer user through RS-485; at the same time, the electric energy data of the low-voltage electric energy metering device is also transmitted to the electric energy collection terminal of the special transformer user through RS-485; The power collection terminal uploads the power data of the high-voltage side and the low-voltage side to the main station of the power consumption information collection system according to the specified protocol.

The high-voltage electric energy metering integrated device includes a high-voltage sensing unit, a real-time metering unit and a wireless transmission unit; the high-voltage sensing unit transmits the detected voltage and current data to the real-time metering unit, and the real-time metering unit transmits the result data to the wireless transmission unit , the wireless transmission unit transmits the result data to the micro-power wireless collector.

The high-voltage sensing unit includes a high-voltage voltage sensor, a No. 1 voltage conditioning circuit, a high-voltage current sensor, and a No. 1 current conditioning circuit; the high-voltage voltage sensor collects voltage data on the high-voltage side, and its output terminal communicates with the real-time measurement via the No. 1 voltage conditioning circuit. Unit connection; the high-voltage current sensor collects current data on the high-voltage side, and its output terminal is connected to the real-time metering unit via the No. 1 current conditioning circuit.

The real-time metering unit includes No. 1 metering chip; the output terminals of the No. 1 voltage conditioning circuit and the No. 1 current regulating circuit are respectively connected to the No. 1 metering chip, and the chip is also connected to the wireless transmission unit.

The wireless transmission unit includes a No. 1 MCU main control chip, a micro-power wireless module and an antenna; the No. 1 MCU main control chip is connected to the No. 1 metering chip, and the main control chip is also connected to the micro-power wireless module. The module is connected to the antenna.

The high-voltage electric energy metering integrated device is a device that is directly connected to a high-voltage line for metering, and has no exposed terminals except for high-voltage current access terminals and high-voltage voltage access terminals.

The micro-power wireless collector includes an MCU, a memory, a communication interface, a wireless module and an antenna; the wireless module communicates wirelessly with the micro-power wireless module in the high-voltage electric energy metering integrated device on the high-voltage side through the antenna, and the wireless module is also connected to the MCU , the MCU is connected with the communication interface and the memory respectively.

The special variable user power collection terminal includes an AC sampling circuit, an MCU+UNIX processor, a GPRS unit, an input and output interface, and a communication interface; the AC sampling circuit collects voltage and current signals and transmits them to the MCU+UNIX processor; MCU+ The UNIX processor receives pulse input signals and switch input signals through the input and output interfaces, and performs control output. The MCU+UNIX processor communicates with the peripherals through the communication interface; the MCU+UNIX processor is connected to the GPRS unit, and through the unit Conduct wireless communication with the master station of the electricity consumption information collection system.

The low-voltage electric energy metering device includes a voltage sensor, a current sensor, a No. 2 voltage conditioning circuit, a No. 2 current conditioning circuit, a No. 2 metering chip, a No. 2 MCU main control chip, and an LCD; the voltage sensor collects voltage data on the low-voltage side, and its output terminal The No. 2 metering chip is connected to the No. 2 metering chip through the No. 2 voltage conditioning circuit; the current sensor collects the current data on the low-voltage side, and its output terminal is connected to the No. 2 metering chip through the No. 2 current regulating circuit; the No. 2 metering chip is connected to the No. 2 MCU main control chip Connection; the No. 2 MCU main control chip is connected with the LCD, and the chip is also connected with the communication interface and the memory respectively.

The communication interface includes an infrared interface, an RS-232 interface and an RS-485 interface; the communication interface of the specific transformation user electric energy collection terminal includes at least 2 or more RS-485 interfaces.

The integrated high-voltage electric energy metering device of the utility model is directly connected to the high-voltage line, and there are no redundant exposed terminals except the high-voltage voltage and high-voltage current leads. The utility model has the characteristics of good real-time performance, high accuracy, not easy to be damaged by human beings, and the like.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the integrated high-pressure metering device of the present invention.

Fig. 3 is a schematic diagram of the structure of each device on the low-voltage side of the utility model.

Fig. 4 is a schematic diagram of the structure of the electric energy collection terminal of the special variable user of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the utility model includes a high-voltage electric energy metering integrated device, a micro-power wireless collector, a dedicated variable user electric energy collection terminal, a low-voltage electric energy metering device, and a master station of the electricity information collection system. The high-voltage electric energy metering integrated device installed on the high-voltage side measures the active power, reactive power, apparent power and electric energy on the high-voltage side in real time, and transmits these data to the micro-power wireless collector through the built-in micro-power wireless module; on the low-voltage side The micro-power wireless collector of the high-voltage side transmits the power data of the high-voltage side to the power collection terminal of the special transformer user through RS-485; at the same time, the power data of the low-voltage electric energy metering device is also transmitted to the power collection terminal of the special transformer user through RS-485; The collection terminal can upload the power data of the high-voltage side and the low-voltage side to the main station of the power consumption information collection system according to the specified protocol; Carry out comparative analysis of real-time electric energy metering data on the high-voltage side and low-voltage side, and timely detect and alarm electricity theft.

As shown in Figure 2, the high-voltage electric energy metering integrated device has a built-in micro-power wireless transmission module, which can transmit real-time active power, reactive power, apparent power, and electric energy on the high-voltage side to the micro-power wireless collection on the low-voltage side. device.

The high-voltage electric energy metering integrated device includes a high-voltage sensing unit, a real-time metering unit, a wireless transmission unit, a memory and a communication interface. The high-voltage electric energy metering integrated device obtains the high-voltage side signal through the high-voltage sensing unit, analyzes and processes it through the real-time metering unit, and obtains real-time active power, reactive power, apparent electric energy and other data. The wireless transmission unit will be used as the key to judge electricity theft Real-time data transmission to the micro-power wireless collector located on the low-voltage side.

The high-voltage sensing unit includes a high-voltage voltage sensor, a No. 1 voltage conditioning circuit, a high-voltage current sensor, and a No. 1 current conditioning circuit; the high-voltage voltage sensor collects voltage data on the high-voltage side, and its output terminal is connected to the real-time metering unit through the No. 1 voltage conditioning circuit; The current sensor collects current data on the high-voltage side, and its output terminal is connected to the real-time metering unit via the No. 1 current conditioning circuit.

The real-time metering unit includes No. 1 metering chip; the output ends of the No. 1 voltage conditioning circuit and the No. 1 current regulating circuit are respectively connected with the No. 1 metering chip, and the chip is also connected with the wireless transmission unit.

The wireless transmission unit includes No. 1 MCU main control chip, micro-power wireless module and antenna; No. 1 MCU main control chip is connected with No. 1 metering chip. The power wireless module is connected with the antenna.

The integrated high-voltage electric energy metering device of the utility model is a device directly connected to a high-voltage line for metering. Except for the high-voltage current access terminal and the high-voltage voltage access terminal, there are no other exposed terminals, and the means of stealing electricity is not easy to implement.

As shown in Figure 3, the micro-power wireless collector located on the low-voltage side uses micro-power wireless to receive power and energy data on the high-voltage side, and transmits the received data to the power transformer user's power collection terminal through the RS-485 interface. The micro-power wireless collector includes MCU, memory, communication interface, wireless module and antenna; the wireless module communicates wirelessly with the micro-power wireless module in the high-voltage electric energy metering integrated device on the high-voltage side through the antenna, and the wireless module is also connected to the MCU. Connect with the communication interface and the memory respectively.

As shown in Figure 3, the user's power collection terminal uploads data to the main station of the power consumption information collection system through the GPRS communication module. The user's power collection terminal includes AC sampling circuit, MCU+UNIX processor, GPRS unit, input and output interface and communication interface; AC sampling circuit collects voltage and current signals and transmits them to MCU+UNIX processor; MCU+UNIX processing The device receives pulse input signals and switch input signals through the input and output interfaces, and performs control output. The MCU+UNIX processor communicates with the peripherals through the communication interface; the MCU+UNIX processor is connected with the GPRS unit, and through this unit and the user The master station of the electrical information collection system performs wireless communication.

As shown in Fig. 4, the specific user electric energy collection terminal mainly includes a remote communication module, a display unit and at least two or more RS-485 local interfaces. Through the RS-485 interface, the terminal can respectively receive electric energy measurement data and electric parameter measurement data from the high and low voltage sides, and display them in real time and intuitively through the display unit; it can also transmit the high and low voltage side data remotely through the remote communication module according to certain communication protocols to the master station of the power consumption information collection system, and can store historical data for a specified period of time.

As shown in Figure 3, the low-voltage electric energy metering device collects power and electric energy data on the low-voltage side, and transmits the collected data to the electric energy collection terminal of the electric power transformer user through the RS-485 interface. The low-voltage electric energy metering device includes a voltage sensor, a current sensor, a No. 2 voltage regulation circuit, a No. 2 current regulation circuit, a No. 2 metering chip, a No. 2 MCU main control chip and an LCD. The voltage sensor collects voltage data on the low-voltage side, and its output terminal is connected to the No. 2 metering chip through the No. 2 voltage conditioning circuit; The metering chip is connected to the No. 2 MCU main control chip; the No. 2 MCU main control chip is connected to the LCD, and the chip is also connected to the communication interface and the memory respectively.

The communication interfaces of high-voltage electric energy metering integrated device, micro-power wireless collector, special transformer user electric energy collection terminal and low-voltage electric energy metering device include infrared interface, RS-232 interface and RS-485 interface. The communication interface of the specific user electric energy collection terminal includes at least 2 or more RS-485 interfaces.

The main station of the power consumption information collection system is the main station of the existing system, and it only needs to configure the corresponding interface of the special user electric energy collection terminal to be connected to the original database, without the need to build another database.

The embodiments of the utility model further illustrate the principles of the utility model, but are not intended to limit the utility model. All other implementations obtained by those skilled in the art according to the technical solution of the utility model all belong to the protection scope of the utility model.

Claims (10)

1. electric power specially becomes large user's electricity anti-theft system, it is characterized in that, comprises high-voltage electric energy measurement integrated apparatus, micropower wireless collection device, specially becomes user's energy collection terminal, low voltage electric energy measure device and power information acquisition system main website; Be arranged on high-tension side high-voltage electric energy measurement integrated apparatus real time measure high-pressure side active power, reactive power, applied power and electric energy, and by built-in micro power radio module, energy data transferred to micropower wireless collection device; High-pressure side energy data is transferred to by RS-485 and specially becomes user's energy collection terminal by the micropower wireless collection device being positioned at low-pressure side; The energy data of low voltage electric energy measure device is also transferred to by RS-485 and specially becomes user's energy collection terminal simultaneously; The energy data of high-pressure side and low-pressure side is uploaded to power information acquisition system main website according to the stipulations of specifying by special change user energy collection terminal.

2. electric power according to claim 1 specially becomes large user's electricity anti-theft system, it is characterized in that, described high-voltage electric energy measurement integrated apparatus comprises high pressure sensing unit, real time measure unit and wireless transmission unit; The voltage and current data of detection are reached real time measure unit by high pressure sensing unit, and result data is reached wireless transmission unit by real time measure unit, and result data is reached described micropower wireless collection device by wireless transmission unit.

3. electric power according to claim 2 specially becomes large user's electricity anti-theft system, it is characterized in that, described high pressure sensing unit comprises high-voltage voltage sensors, voltage modulate circuit, high-voltage current sensor and a current regulating circuit; High-voltage voltage sensors gathers high side voltage data, and its output terminal is connected with described real time measure unit via a voltage modulate circuit; High-voltage current sensor gathers high voltage side current data, and its output terminal is connected with described real time measure unit via a current regulating circuit.

4. electric power according to claim 3 specially becomes large user's electricity anti-theft system, it is characterized in that, described real time measure unit comprises a computation chip; A described voltage modulate circuit is connected with a computation chip respectively with the output terminal of a described current regulating circuit, and this chip is also connected with described wireless transmission unit.

5. electric power according to claim 4 specially becomes large user's electricity anti-theft system, it is characterized in that, described wireless transmission unit comprises MCU main control chip, micro power radio module and an antenna; A MCU main control chip is connected with a described computation chip, and this main control chip is also connected with micro power radio module, and micro power radio module is connected with antenna.

6. electric power according to claim 1 specially becomes large user's electricity anti-theft system, it is characterized in that, described high-voltage electric energy measurement integrated apparatus, is directly access the device that high-tension line carries out measuring, except high-tension current access terminal, high tension voltage access terminal, expose terminal without other.

7. electric power according to claim 1 specially becomes large user's electricity anti-theft system, it is characterized in that, described micropower wireless collection device comprises MCU, storer, communication interface, wireless module and antenna; Wireless module is by the micro power radio module wireless communication in antenna and on high-tension side high-voltage electric energy measurement integrated apparatus, and wireless module is also connected with MCU, and MCU is connected with communication interface and storer respectively.

8. electric power according to claim 1 specially becomes large user's electricity anti-theft system, it is characterized in that, described special change user energy collection terminal comprises alternating current sampling circuit, MCU+UNIX processor, GPRS unit, IO interface and communication interface; Alternating current sampling circuit gathers voltage and current signal and is reached MCU+UNIX processor; MCU+UNIX processor by IO interface received pulse input signal, On-off signal signal, and carries out controls output, and MCU+UNIX processor to be connected with peripheral hardware by communication interface and to communicate; MCU+UNIX processor is connected with GPRS unit, and carries out radio communication by this unit and power information acquisition system main website.

9. electric power according to claim 1 specially becomes large user's electricity anti-theft system, it is characterized in that, described low voltage electric energy measure device comprises voltage sensor, current sensor, No. two voltage modulate circuits, No. two current regulating circuit, No. two computation chips, No. two MCU main control chips and LCD; Voltage sensor gathers low-pressure side voltage data, and its output terminal is connected with described No. two computation chips via No. two voltage modulate circuits; Current sensor gathers low-pressure side current data, and its output terminal is connected with No. two computation chips via No. two current regulating circuit; No. two computation chips are connected with No. two MCU main control chips; No. two MCU main control chips are connected with LCD, and this chip is also connected with communication interface and storer respectively.

10. the electric power according to claim 7,8 or 9 specially becomes large user's electricity anti-theft system, and described communication interface comprises infrared interface, RS-232 interface and RS-485 interface; The communication interface of described special change user energy collection terminal at least comprises 2 tunnels and above RS-485 interface.