Acquisition terminal is as power consumer electricity consumption monitoring, load control, the final consumer of the management of power use, under distribution network automated overall situation, intelligence specially becomes the power supply quality that acquisition terminal can guarantee responsible consumer, having very realistic meanings, is to realize the modern important component part of demand management.Intelligence specially becomes the acquisition terminal device and is mainly used in special change user, realizes collection and processing capacity, the collection of user power utilization information and breaking-closing operating function and the sequence of events recording function that processing capacity, electric energy quality monitoring function, user power utilization load controlling function, user purchase electric electricity consumption control function, control user power utilization circuit to exchanging analog information.
In recent years for alleviating power tense and improving the level of IT application, State Grid Corporation of China has successively put into effect " Q/GDW 374.1-2009 power consumer power information acquisition system technical manual: specially become the acquisition terminal technical manual " and " Q/GDW 376.1-2009 power consumer power information acquisition system communication protocol: main website and acquisition terminal communication protocol ", standard the construction and the management of special change acquisition terminal, system, electric energy acquisition and monitoring have been proposed new requirement.State net company to the requirement of system development direction, makes traditional negative control terminal can't satisfy this market demand to the requirement of indexs such as product function, performance.
The utility model content
The purpose of this utility model is to provide a kind of can gather calculating to special change user's power information, and has the special change acquisition terminal device of power control and remote communicating function.
For achieving the above object, the utility model has adopted following technical scheme: a kind of special change acquisition terminal device, comprise processing unit, the signal input part of processing unit respectively with the electric current and voltage sample circuit that is used to gather three-phase current, voltage signal, the switching value input circuit that is used to gather switch position signal links to each other, the signal output part of processing unit connects power control circuit, processing unit and main website telecommunication.
As shown from the above technical solution, the utility model can be realized the acquiring electric energy information to special change user, comprise electric energy meter data acquisition, electric energy measuring equipment operating mode and power supply electric energy quality monitoring, and the supervision of power load and electric flux and control, and image data managed and transmit, realize from the transformer station to the supply line again comprehensive to power consumer for electricity consumption monitoring, control and management.The utility model can satisfy the new technical manual of national grid, and has functions such as power control, electric energy control, electric energy quality monitoring, Threshold Crossing Alert, simultaneously data is sent to the main website of system.
A kind of special change acquisition terminal device, comprise processing unit 1, the signal input part of processing unit 1 respectively with the electric current and voltage sample circuit 2 that is used to gather three-phase current, voltage signal, the switching value input circuit 3 that is used to gather switch position signal links to each other, the signal output part of processing unit 1 connects power control circuit 4, processing unit 1 and main website 5 telecommunication, as shown in Figure 1.Processing unit 1 calculates parameters such as active power, reactive power, harmonic wave, provides 6 tunnel passive states amount access points and 4 pairs of passive states amount output points, and has the AC sampling function, calculating voltage, electric current, active power, reactive power, power factor etc.
As shown in Figure 1, described processing unit 1 adopts embedded Linux system, described processing unit 1 comprises main control chip, main control chip adopts 32 RISC embedded-type ARM 9 kernel CPU AT91SAM9260 chips, the SPI interface of main control chip links to each other with electric current and voltage sample circuit 2, electric current and voltage sample circuit 2 built-in A/D converters, electric current and voltage sample circuit 2 links to each other with impulse output circuit 6, impulse output circuit 6 is used to provide the benchmark of measuring electric degree, main control chip is by GPIO port expander and switching value input circuit 3, power control circuit 4 links to each other with electrical energy control circuit 7, power control circuit 4 can be realized the power load control function, comprise the period power control, the factory day-off power control, control that the business newspaper stops controlling and current power is floated downward, when load is big, can cut off a certain load, preferentially to other important load power supplies.Electrical energy control circuit 7 can be realized the control function of electric weight, comprise month automatically controlled, purchase automatically controlledly, can cut off power supply automatically for the user of arrearage.
As shown in Figure 1, the UART interface of main control chip connects wireless communication module 8, described wireless communication module 8 is GPRS wireless communication module or cdma wireless communication module, main control chip is by wireless communication module 8 and main website 5 communications, main control chip is by ethernet module 9 access network based on ethernet, the utility model passes to main website 5 by wireless communication module 8 or Ethernet with terminal information, and carries out the order from main website 5.The utility model also comprises power module, power module is to power supplies such as processing unit 1, electric current and voltage sample circuit 2, switching value input circuit 3 and power control circuits 4, be provided with standby rechargeable battery 14 in the power module, standby rechargeable battery 14 can be given processing unit 1, wireless communication module 8 power supplies when the terminal power supply is stopped power supply, can realize the meter-reading function that has a power failure.When this end device powers on, just begin standby rechargeable battery 14 is charged, when the electric weight deficiency of this end device, main control chip sends alarm signal to main website 5, and main website 5 is the data messages of these end devices of storage in time.
As shown in Figure 1, the USB/UART interface of described main control chip connects local communication unit 10, and the SPI interface of main control chip connects human-computer interaction module 11, and man-machine interactively module 11 is used to carry out this locality and is provided with, and also can check relevant information for the user.Local communication unit 10 provides infrared interface, RS232 interface, RS485 interface and USB interface, simulated measurement input circuit 12 links to each other with the signal input part of main control chip by A/D converter, simulated measurement input circuit 12 is used to gather some analog quantitys, for the main control chip monitoring.The signal output part of main control chip links to each other with data storage circuitry 13.On the described human-computer interaction module 11 LCD display and button are set.1 pair of various data of processing unit are carried out being kept at after the statistical study in the Flash chip of processing unit 1 and are waited for that main website 5 calls survey together, processing unit 1 is also carried out the order that main website 5 issues simultaneously, processing unit 1 also is equipped with the RS232 interface and the USB interface of standard, for local communication.Local communication unit 10 has disposed the USB interface of standard, RS232 interface, the RS485 interface of checking meter, the RS485 interface and the infrared interface of spare extension.
The utility model is mainly used in occasions such as transformer station, large user, distribution transforming power station, gathers specially to become subscriber's line interchange simulating signal, provides 4 tunnel remote controls passive output interface, can carry out Long-distance Control to 4 way switch; 2 tunnel 485 interfaces are provided, but the minimum 8 485 electric energy meter data of copy reading; 6 tunnel remote signalling state input interfaces are provided, can monitor 6 tunnel remote signalling status informations; 2 tunnel pulses input and 2 tunnel pulse output interfaces are provided, and the utility model can be gathered and analytic record quality of power supply information, and has event recording function.The utlity model has the AC sampling function, minimumly gather 8 485 multifunction electric meters, and calculate parameters such as active power, reactive power, general power, power factor, harmonic wave, provide 6 road passive switch amount access points and 4 pairs of passive remote control contacts, realization is to supervision, the control of many circuits, have functions such as remote signalling, remote measurement, remote control, power control, electric energy control, electric energy quality monitoring, Threshold Crossing Alert, finish real-time monitoring and control, improve the quality of power supply with the main website of system.