CN213876382U - Non-invasive cell electric energy substitution demand estimation device - Google Patents

Abstract

The utility model discloses a demand estimation device is replaced to non-invasive district electric energy, including current acquisition module, microcontroller module to and wireless transmission module. The current acquisition module is used for measuring and recording current changes on a household electric power main line and transmitting data to the microcontroller module through a serial port; the microcontroller module comprises an electronic touch screen and a main control chip, wherein the electronic touch screen is used for sending a data reading or processing instruction to the main control chip, the main control chip carries out corresponding operation according to a local instruction or a remote instruction of the electronic touch screen, and the result is transmitted to a cloud server or terminal equipment of a power company through the wireless transmission module. The wireless transmission module can also receive the remote instruction and transmit the remote instruction to the microcontroller module. By adopting the technical scheme, the power company can remotely measure and analyze the power utilization data of the user in a non-invasive mode, and the power company is used for conveniently and efficiently estimating the requirement for replacing electric energy in the cell.

Description

Non-invasive cell electric energy substitution demand estimation device

Technical Field

The utility model relates to an electric equipment discernment and electric energy substitution field specifically are a demand estimation device is replaced to non-invasive district electric energy.

Background

In recent years, the nation places pollution control on an important strategic position. The important measures for preventing and treating pollution are to improve the energy structure, increase the proportion of clean energy and reduce the use of fossil energy by residents.

Electric power companies have been putting forward electric energy substitution at energy consumption ends, that is, clean electric energy is used for substituting traditional fossil energy such as coal and oil. The fossil energy that present city user mainly adopted is the natural gas, and it is little to change the leeway after the gas transmission pipeline installation, and daily use is higher to user's standard operating requirement, and influences indoor air quality easily under the use of irregularity, therefore "gas changes the electricity" policy and is being actively promoted in many cities. The electric energy replacement not only improves the electrification level of household energy utilization equipment of residents, but also reduces the environmental pollution, and meets the requirement of social sustainable development on energy consumption.

The existing research related to electric energy substitution does not fully consider the influence of electric energy substitution on a power grid. Specifically, the "gas to electricity change" performed by users in a cell inevitably increases the total power consumption in the cell, which may cause overload of a transformer in a distribution room, and even cause a power failure accident in a severe case.

In the existing method, the load of a user can be decomposed to obtain an electric energy substitution demand model, but a non-invasive electric energy substitution demand estimation device which simultaneously supports local touch operation, remote wireless communication and remote control functions is not available, so that a power company cannot efficiently and conveniently estimate the cell electric energy substitution demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, adapts to the real needs of power company, provides a convenient non-invasive district electric energy and replaces demand estimation device, can be so that power company carries out user's power consumption data measurement and analysis at remote server or terminal through non-invasive mode for the demand that electric energy was replaced in convenient high-efficient estimation district.

In order to realize the above purpose, the utility model discloses the technical scheme who adopts is:

a non-intrusive cell power replacement requirement estimation apparatus, comprising:

the device comprises a current acquisition module, a microcontroller module and a wireless transmission module; the current acquisition module is connected with a user-to-home power main line, measures and records current changes on the user-to-home power main line, and transmits recorded data to the main control chip of the microcontroller module in a serial port communication mode; the main control chip is respectively connected with the electronic touch screen and the wireless transmission module through serial ports, processes received data according to a control instruction of the electronic touch screen or a remote control instruction received by the wireless transmission module, and transmits a result to the wireless transmission module; the wireless transmission module sends the received data to the electric power company cloud server or the remote terminal device in a wireless mode, and receives a remote control instruction sent by the remote terminal device or the server.

In the above technical solution, the current collecting module includes a current mutual inductance circuit, an analog/digital conversion unit, an optical coupling circuit, and a DSP processor; the current mutual inductance circuit is connected with a user service electric power main line and then sequentially connected with the analog/digital conversion unit, the optical coupling circuit and the DSP, and the output end of the DSP is connected with the input end of a main control chip of the wireless transmission module.

Furthermore, the DSP processor is TMS320F 2812.

Further, the main control chip can adopt a model STM32F103ZET 6.

Further, the wireless transmission module comprises a WiFi transmission chip USR-WIFI232-B2 of the person Internet of things and a 4G transmission chip USR-LTE-7S 4.

Furthermore, the current acquisition module is communicated with the microcontroller through a serial port, and the microcontroller is communicated with the wireless transmission module through the serial port.

The beneficial effects of the utility model reside in that:

the utility model provides a demand estimation device is replaced to non-invasive district electric energy is to the district at power supply company, especially when old district carries out full electric transformation, if unable while acquires district user's natural gas, coal gas quantity, only need select a small amount of user installation current collector, through utilizing the utility model provides a demand estimation device is replaced to non-invasive district electric energy, power supply company just can this non-invasive device of remote control read user's electric energy data and calculate the electric energy and replace the demand estimated value to through the long-range calculation result that reads of wireless mode, realize high-efficiently, low-cost and estimate the electric energy consumption increment that full electric transformation probably caused accurately, this has important guide meaning to power supply company's implementation relevant policy.

Drawings

Fig. 1 is a schematic view of the overall structure of the device.

Fig. 2 is a packaging diagram of a current collection module in the device.

Detailed Description

The invention will be further described with reference to the following figures and examples:

example 1: a non-intrusive cell power replacement requirement estimation apparatus, see fig. 1; it includes:

the current acquisition module is connected with a user household electric power main line, measures and records current change on the user household electric power main line, and transmits recorded data to the microcontroller module in a serial port communication mode;

the microcontroller module comprises an electronic touch screen and a main control chip, the main control chip is respectively connected with the electronic touch screen and the wireless transmission module, and the main control chip processes received data according to an instruction of the electronic touch screen or a remote control instruction received by the wireless transmission module;

and the wireless transmission module receives a remote instruction sent by the remote server in a wireless mode or sends a calculation result of the main control chip to the remote server.

The current acquisition module comprises a current mutual inductance circuit, an AD7894-10 analog/digital conversion unit, an optical coupling circuit and a DSP processor with the model of TMS320F2812 which are connected in sequence. The mutual inductance ring of the current transformer is connected with a user household electric power main line, and the current change on the user household electric power main line is measured and recorded; the selected analog/digital conversion unit AD7894-10 is a low-power-consumption, low-cost and high-performance fast 14-bit analog/digital converter, is powered by a 5V single power supply, is internally provided with 1 successive approximation type analog/digital converter, 1 on-chip sampling and holding amplifier, 1 on-chip clock and 1 high-speed serial interface, and the selected DSP TMS320F2812 is a novel high-performance 32-bit fixed-point digital processor based on a code-compatible C28x kernel, has the highest operating frequency of 150Mhz, can support 45 peripheral interrupt expansion blocks of peripheral interrupts, comprises multiple serial ports such as SPI, SCI and eCAN, has sufficient operational capability and expansibility, and can meet the requirements of real-time property, reliability and accuracy for processing current acquisition data. The current acquisition modules can be packaged as shown in fig. 2 to obtain a current mutual inductance acquisition module, the sampling frequency of the current acquisition module is 1/60Hz, 9 channels are formed in total, and the total current change of 9 users can be detected at most simultaneously;

the microcontroller module may include an STM32F103ZET6 master control chip and an XPT2046 electronic touch screen. STM32F103ZET6 is a MCU based on ARM V7 series Cortex-M3 kernel, easy development, has good compatibility. The STM32F103ZET6 integrates a plurality of interfaces such as 512KB FLASH, 64KB SRAM, 3 ADCs, 2 DACs, 3 SPIs, 2I 2C and the like in the chip, and the CPU master frequency 72MH has the advantages of real-time performance, low cost, low power consumption, comprehensive excellent development tools and the like, and can well meet the requirements of processing and calculating a large amount of data; XPT2046 is a 4-wire resistive touch screen controller, contains 12-bit resolution 125Khz conversion rate successive approximation type A/D converter, can measure pressure applied on a touch screen, and has low power consumption and good compatibility. The chip is suitable for terminal equipment such as a touch display, a portable instrument and the like; STM32F103ZET6 main control chip reads electronic touch screen XPT2046 control instruction through the serial ports, under the control of electronic touch screen, reads user's total current sample data and reads the total power consumption data of user of power company's input through the serial ports from the electric current collection module, estimates out user's electric energy and replaces the demand, sends wireless transmission module to the serial ports mode, receives remote server's control instruction simultaneously through wireless transmission module.

The wireless transmission module can comprise a USR-WIFI232-B2 chip of the Internet of things and a 4G chip of USR-LTE-7S4, the USR-WIFI232-B2 chip supports 802.11B/G/n wireless standard, supports WiFi protocol and TCP/IP network protocol stack, supports UART/GPIO/Ethernet data communication interface, has overtime restart and timing restart functions, and meets the data transmission and communication requirements of the utility model; the selected 4G transmission chip USR-LTE-7S4 supports mobile, Unicom and telecom 4G high-speed access, supports TCP and UDP network communication protocols, supports 10KB serial data cache in each path of connection, ensures that the cache data is not lost when the connection is abnormal, and has higher connection reliability; the electric energy substitution demand model can be sent to a power company remote server in a WIFI or 4G mode by using the wireless transmission module, the electric energy substitution demand model is used for estimating electric quantity substitution demands of all users in a cell, receiving a remote control instruction sent by the remote server, and transmitting the remote control instruction to the microcontroller module.

When the device is used, a certain number of users are selected in a cell with the electric energy substitution requirement to be estimated, and the device is installed for the users. Then, the staff sends a control instruction at a remote server end in a wireless mode, or locally controls the device to collect and record current data on the power main line of the power home through the current mutual inductance collection module by operating the electronic touch screen. After data acquisition for a period of time, the power company staff sends out relevant data reading and processing instructions by using an electronic touch screen or a wireless remote control mode in the micro control module after inputting the total power consumption data of the users in the community into the device in a wireless mode or a serial port such as 4G or WiFi. The main control chip STM32F103ZET6 automatically carries out data processing on total power consumption data and low-frequency current sampling data of cell users according to received control instructions to identify the replaceable electric quantity in the total electric quantity, obtains a cell electric energy replacement demand estimation value, and transmits the cell electric energy replacement demand estimation value to a power company remote server or terminal equipment of staff through WiFi or 4G of a wireless transmission module.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims (6)

1. A non-intrusive cell power replacement requirement estimation apparatus, comprising: the device comprises a current acquisition module, a microcontroller module and a wireless transmission module; the current acquisition module is connected with a user-to-home power main line, measures and records current changes on the user-to-home power main line, and transmits recorded data to the main control chip of the microcontroller module in a serial port communication mode; the electronic touch screen is connected with the main control chip, the main control chip processes received data according to a local instruction or a remote instruction of the electronic touch screen, the main control chip is connected with the wireless transmission module, the wireless transmission module is used for sending an output result of the main control chip to the cloud server or the terminal device of the power company in a WiFi or 4G wireless communication mode, and meanwhile, the wireless transmission module is used for receiving the remote instruction and transmitting the remote instruction to the main control chip.

2. The non-invasive cell electric energy substitution requirement estimation device according to claim 1, wherein the current collection module comprises a current mutual inductance circuit, an analog/digital conversion unit, a light coupling circuit and a DSP processor; the current mutual inductance circuit is connected with a user service electric power main line and then sequentially connected with the analog/digital conversion unit, the optical coupling circuit and the DSP, and the output end of the DSP is connected with the input end of a main control chip of the microcontroller module.

3. The apparatus of claim 2, wherein the DSP processor is of the type TMS320F 2812.

4. The apparatus according to claim 1, wherein the main control chip is of a type STM32F103ZET 6.

5. The device for estimating the electric energy substitution requirement of the non-invasive cell as claimed in claim 1, wherein the wireless transmission module comprises a WiFi transmission chip USR-WiFi232-B2 of the manned internet of things and a 4G transmission chip USR-LTE-7S 4.

6. The non-invasive cell electrical energy replacement requirement estimation apparatus as claimed in claim 1, wherein the current collection module communicates with the microcontroller via a serial port, and the microcontroller communicates with the wireless transmission module via a serial port.

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