CN203632355U - Remote, real-time and intelligent power load management system - Google Patents

Abstract

The utility model discloses a remote electric load real-time intelligent management system, which is mainly composed of a data acquisition circuit, a power carrier communication device, a central CPU, a data memory, a liquid crystal display, a wireless communication device, a clock circuit and a power supply. The data acquisition circuit collects power The load information is sent to the central CPU through the ISA bus and the power carrier communication device, and the central CPU sends the signal to the liquid crystal display for real-time display after processing the signal, and at the same time sends the signal to the data memory for storage and sends the information through the wireless communication device to The upper computer and the user, the clock circuit is connected with the central CPU to provide the clock signal for the system, and the power supply provides the required voltage for the system. The system realizes load management, power analysis, and optimized power consumption analysis through real-time and accurate measurement of power load data information of the power grid, thereby improving the utilization rate of power generation, power supply and power consumption equipment.

Description

A remote electric load real-time intelligent management system

technical field

The utility model relates to the field of electric power, in particular to a remote electric load real-time intelligent management system.

Background technique

Power quality refers to the quality of AC power supplied to users through the public grid. An ideal utility grid should supply power to consumers at a constant frequency, standard sine wave, and rated voltage. At the same time, in the three-phase AC system, the amplitude of the voltage and current of each phase should be equal, the phases should be symmetrical, and the phase difference should be 120 degrees. However, this ideal state does not exist due to the non-linear or asymmetrical equipment such as generators, transformers and lines in the system, the variable nature of the load, the imperfect control means, operation, external interference and various faults. Therefore, real-time monitoring of electric energy load is of great significance for improving the power supply of public grid power equipment.

Utility model content

The purpose of the utility model is to provide an intelligent power load management system that can accurately measure the power load data information of the power grid in real time and improve the utilization rate of power generation, power supply and power consumption equipment.

The utility model is realized through the following technical solutions: a remote electric load real-time intelligent management system, which is mainly composed of a data acquisition circuit, a power carrier communication device, a central CPU, a data memory, a liquid crystal display, a wireless communication device, a clock circuit and a power supply, The data acquisition circuit collects the power load information and sends the information to the central CPU through the ISA bus and the power carrier communication device. The central CPU processes the signal and sends it to the liquid crystal display for real-time display. At the same time, the central CPU sends the signal to the data memory for storage and through The wireless communication device sends information to the upper computer and the user, the clock circuit is connected to the central CPU to provide a clock signal for the system, and the power supply is connected to the central CPU to provide the required voltage for the system.

Further, the wireless communication device adopts the GSM communication system.

Further, the central CPU is TMS320C6713. It is a 32-bit high-speed floating-point DSP with a maximum clock frequency of 300MHz. It supports no CPU participation, can transmit data in the allowed address space, expands the bus, has functions such as host port and I/O port operation, and multi-channel buffered serial ports. , can communicate with a variety of serial communication interfaces through configuration, two 32-bit general-purpose timers, etc.

Further, the data acquisition circuit is composed of a pulse sensor, a three-phase AC signal acquisition device, an RS485 circuit, and a state quantity acquisition device. The pulse sensor detects the pulse amount and sends the information to the central CPU through a power carrier communication device. The three-phase AC signal The acquisition device collects voltage, current, active power, reactive power, power factor, active energy, and instantaneous value of reactive energy, and sends the information to the central CPU through the power carrier communication device. Send the information to the central CPU, and the central CPU collects the energy meter information through the RS485 circuit. The AC signal acquisition device is PL3223. PL3223 is a high-precision three-phase multi-functional energy metering chip, supports SP interface and power pulse output, and has a character wheel drive pulse output with a customizable frequency division ratio. PL3223 integrates a second-order ∑–△ADC, reference voltage source, Digital signal processing modules for temperature sensors, power detection and all active/reactive energy metering and voltage/current rms and line voltage frequency measurements.

Compared with the prior art, the utility model has the beneficial effects of:

1. The system highlights the modular design, and the functions of each part are relatively independent, which avoids the cross-connection between different modules, has good scalability, and can reduce the workload of future maintenance.

2. The system is small in size and low in power consumption, and is more suitable for functions such as load management, power analysis, and optimization of power consumption analysis, which is conducive to improving the utilization rate of power generation, power supply and power consumption equipment.

Description of drawings

Figure 1 is the overall structure diagram of the system.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example 1:

As shown in Figure 1, a remote power load real-time intelligent management system is mainly composed of a data acquisition circuit, a power carrier communication device, a central CPU, a data memory, a liquid crystal display, a wireless communication device, a clock circuit, and a power supply. The power load information is sent to the central CPU through the ISA bus and the power carrier communication device. The central CPU sends the signal to the liquid crystal display for real-time display after processing. At the same time, the central CPU sends the signal to the data memory for storage and through the wireless communication device. The information is sent to the host computer and the user, the clock circuit is connected to the central CPU to provide the clock signal for the system, and the power supply is connected to the central CPU to provide the required voltage for the system. The data acquisition circuit mainly completes the acquisition of real-time data such as pulse volume, power, electricity, meter reading, demand, current and voltage, and sends the real-time data to the central CPU through the ISA bus and power carrier communication device to realize real-time display control. At the same time, the central CPU controls the corresponding relays to achieve the purpose of closed-loop control and remote control. The staff can also obtain the information of the central CPU through the RS232 interface.

Example 2:

This embodiment proposes a preferred structure of a remote electric load real-time intelligent management system on the basis of Embodiment 1. The data acquisition circuit is composed of a pulse sensor, a three-phase AC signal acquisition device, an RS485 circuit and a state quantity acquisition device. The pulse sensor detects the pulse amount and sends the information to the central CPU through the power carrier communication device, and the three-phase AC signal acquisition device collects voltage, current, active power, reactive power, power factor, active power energy, and reactive power instantaneous value and communicates through the power carrier The device sends the information to the central CPU, the state quantity acquisition device collects the real-time position status and sends the information to the central CPU through the power carrier communication device, and the central CPU collects the watt-hour meter information through the RS485 circuit.

In this embodiment, the wireless communication device uses the GSM communication system. The central CPU selects TMS320C6713 for use. It is a 32-bit high-speed floating-point DSP with a maximum clock frequency of 300MHz. It supports no CPU participation, can transmit data in the allowed address space, expands the bus, has functions such as host port and I/O port operation, and multi-channel buffered serial ports. , can communicate with a variety of serial communication interfaces through configuration, two 32-bit general-purpose timers, etc.

In this embodiment, the AC signal acquisition device is PL3223. PL3223 is a high-precision three-phase multi-functional energy metering chip, supports SP interface and power pulse output, and has a character wheel drive pulse output with a customizable frequency division ratio. PL3223 integrates a second-order ∑–△ADC, reference voltage source, Digital signal processing modules for temperature sensors, power detection and all active/reactive energy metering and voltage/current rms and line voltage frequency measurements.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model. the

Claims (5)

1. A remote electric load real-time intelligent management system is characterized in that: it is mainly composed of a data acquisition circuit, a power carrier communication device, a central CPU, a data memory, a liquid crystal display, a wireless communication device, a clock circuit and a power supply, and the data acquisition circuit collects The power load information is sent to the central CPU through the ISA bus and the power carrier communication device. The central CPU sends the signal to the liquid crystal display for real-time display after processing. At the same time, the central CPU sends the signal to the data memory for storage and through the wireless communication device. The information is sent to the host computer and the user, the clock circuit is connected to the central CPU to provide the clock signal for the system, the power supply is connected to the central CPU to provide the required voltage for the system, and the staff obtains the information of the central CPU through the RS232 interface. 2. A remote electric load real-time intelligent management system according to claim 1, characterized in that: said wireless communication device uses GSM communication system. 3. A remote electric load real-time intelligent management system according to claim 1, characterized in that: the central CPU is TMS320C6713. 4. A kind of remote power load real-time intelligent management system according to claim 1, characterized in that: the data acquisition circuit is composed of a pulse sensor, a three-phase AC signal acquisition device, an RS485 circuit and a state quantity acquisition device, and the pulse sensor Detect the pulse amount and send the information to the central CPU through the power carrier communication device, and the three-phase AC signal acquisition device collects voltage, current, active power, reactive power, power factor, active power The information is sent to the central CPU, the state quantity acquisition device collects the real-time position status and sends the information to the central CPU through the power carrier communication device, and the central CPU collects the watt-hour meter information through the RS485 circuit. 5. A remote electric load real-time intelligent management system according to claim 4, characterized in that PL3223 is selected as the AC signal acquisition device.

Images