CN204290503U - Integral intelligent AC power case - Google Patents

Abstract

The utility model discloses integral intelligent AC power case, be applied to comprise in the low-voltage distribution system of main website, it is characterized in that power supply box comprises: DSP subsystem, ARM subsystem and CPLD; DSP subsystem controls for realizing measuring, protect and exporting; ARM subsystem is used for realizing communication and keyboard & display; DSP subsystem carries out exchanges data by CPLD and ARM subsystem.The utility model can realize long-range real time on-line monitoring, protection and control to distribution line, prevents and avoid the generation of accident, greatly improves safe distribution of electric power operation level and power supply reliability, facilitates operation maintenance personnel to fix a breakdown in time.

Description

Integral intelligent AC power case

Technical field

The utility model relates to AC power online monitoring method equipment, particularly relates to a kind of integral intelligent power supply box of Substation Station alternating current online monitoring method.

Background technology

The electric power system of current China is towards the direction fast development of bulk power grid, high reliability, high automation level.Operation of power networks automation, intelligentized monitoring level are become to the key issue of China's power system development.Along with the economic development of China, social power consumption also increases day by day, and the electrical load of high voltage electric equipment as transformer, instrument transformer, disconnecting link, high-tension switch cabinet, cable etc. that carry large electricity conveying task is also increasing sharply.Along with power network development and electric power scientific and technological progress, automation, the level of IT application of power system substation improve constantly, and electric substation achieves unattended or few man on duty substantially.

Electric substation uses common power system to carry out to the running status of operating electric equipment the requirement that technological means that regular artificial inspection detects and conventional method do not adapt to the automation of transformer station operation far away usually, and an urgent demand realizes intelligent on-line real time monitoring and control to distribution line.

Utility model content

The utility model is the weak point solving the existence of above-mentioned prior art; a kind of integral intelligent AC power case is provided; to long-range real time on-line monitoring, protection and control can be realized to distribution line; prevent and avoid the generation of accident; greatly improve safe distribution of electric power operation level and power supply reliability, facilitate operation maintenance personnel to fix a breakdown in time.

The utility model is that technical solution problem adopts following technical scheme:

The utility model integral intelligent AC power case, is be applied to comprise in the low-voltage distribution system of main website, is characterized in that described power supply box comprises: DSP subsystem, ARM subsystem and CPLD;

Described DSP subsystem controls for realizing measuring, protect and exporting;

Described ARM subsystem is used for realizing communication and keyboard & display;

Described DSP subsystem carries out exchanges data by described CPLD and described ARM subsystem.

The feature of integral intelligent AC power case described in the utility model is also: described DSP subsystem comprises dsp chip, A/D sampling A/D chip and output control circuit; Described ARM subsystem comprises: ARM chip, touch-screen, Ethernet interface and RS485 bus communication interface;

Described ARM subsystem utilizes Ethernet interface and RS485 bus communication interface described in described ARM chip controls to obtain the control command of described main website transmission or controlling described touch-screen obtains manual control command and send to described DSP subsystem, and described DSP subsystem obtains described control command by described CPLD and utilizes described dsp chip to drive described output control circuit to carry out closed or opening operation to corresponding distribution line;

Described DSP subsystem utilize described dsp chip control described A/D sampling A/D chip real-time sampling each road voltage, the magnitude of current instantaneous value and utilize after carrying out Logic judgment described output control circuit perform protecting control; The electric parameter of gathered each distribution line and state of a control are passed to described ARM subsystem by described CPLD by described DSP subsystem, thus are uploaded to described main website for monitoring by the Ethernet interface of described ARM subsystem and RS485 bus communication interface.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model adopts Ethernet interface and RS485 communication interface to realize, with the telecommunications functions of main website, information being carried out collective analysis process, according to system status adjust operation mode intelligently; Thus long-rangely can exchange to Substation Station the operating function that integral intelligent power supply box realizes remote measurement, remote signalling, remote control and remote regulating; Realize " four is distant " function.

2, the utility model adopts embedded technology; the overcurrent protection function module of moving in wink and definiting time-lag and under-voltage with over-voltage protecting function module is provided with by dsp chip; overcurrent protection power supply box being had move in wink and definite time-lag and under-voltage and over-voltage protecting function; protection seting value can be arranged as required; thus make power supply box on the basis realizing remote power feeding control, be provided with protection and the function of adjusting, improve the performance and reliability of whole system.

Accompanying drawing explanation

Fig. 1 is the utility model system architecture diagram;

Fig. 2 is the utility model RS485 bus communication interface circuit theory diagrams.

Embodiment

In the present embodiment, as shown in Figure 1, a kind of Substation Station integral intelligent AC power case, be be applied to comprise a main website and several integral intelligent power supply boxs low-voltage distribution system in, the composition of power supply box comprises: for realizing measuring, the DSP subsystem of protection and output control function, for realizing the ARM subsystem of the management function such as communication and keyboard & display and carrying out the CPLD of data exchanging function for DSP subsystem and ARM subsystem;

DSP subsystem comprises 32 bit DSP chip TMS 320 F 2812s, A/D sampling A/D chip AD7606 and six road output control circuits; ARM subsystem comprises: 32 ARM chip LPC2468, touch-screen, Ethernet interface and RS485 bus communication interface; 32 flush bonding processor structures are formed by 32 bit DSP chip TMS 320 F 2812s and 32 ARM chip LPC2468; And adopt advanced language programming, there is quick, precise information gather and analysis judgement, support communication, friendly human-computer interaction function is provided, use succinct flexibly.In concrete enforcement, touch-screen adopts the liquid crystal touch screen of 800 × 480 pixel 65K looks, realizes the function of input operation and display, friendly interface.

DSP subsystem and ARM subsystem separate, one of them inefficacy can't have influence on another and normally work.DSP subsystem and ARM subsystem connect each other again, mutually monitor, and can Timeliness coverage the other side failure state with send alarm signal in time; Carry out 16 BITBUS network (EPLD simulates twoport 16 dual port RAMs) exchanges data by CPLD between dsp chip and ARM chip, realize the transmission of mutual data with shared.

ARM subsystem utilize ARM chip LPC2468 Control ethernet interface and RS485 bus communication interface to obtain control command and various operational order that main website issues or controlling touch-screen obtains manual control command and send to DSP subsystem, DSP subsystem obtains control command by CPLD and utilizes dsp chip driver output control circuit to carry out closed or opening operation to corresponding distribution line;

DSP subsystem utilizes the instantaneous value of dsp chip control A/D sampling A/D chip real-time sampling each road voltage, the magnitude of current and saves as sampling array, dsp chip calculates the carrying out of sampled value, and the Protection criteria that foundation program is prepared in advance, the overcurrent protection utilizing output control circuit to realize moving in wink and definiting time-lag, the under-voltage action with overvoltage protection, record simultaneously and preserve various event information; The electric parameter such as voltage, electric current of gathered each distribution line and state of a control are passed to ARM subsystem by CPLD by DSP subsystem, thus the main website being uploaded to central control room by the Ethernet interface of ARM subsystem and RS485 bus communication interface is for monitoring; Main website realizes monitoring each electric parameter such as voltage, electric current for distribution loop according to electric parameter and state of a control and monitors deciliter state of circuit breaker, fault message, control a deciliter state for distribution loop, coordinate perfect main website remote monitoring software, thus realize " four is distant " function of " remote measurement ", " remote signalling ", " remote control " and " remote regulating ".

As shown in Figure 2, the RS485 bus interface circuit with Phototube Coupling function of MAX3072 chip and the expansion of HCPL-0600 photoelectric coupling chip is selected; To realize the remote communicating function of ARM subsystem and main website of central control room.TXD pin and RXD pin are that the data of ARM chip LPC2468 serial ports 0 export and data-out pin, and RS485_C pin is that the output of ARM chip LPC2468 controls pin, for realizing the transmission of MAX3072 chip or receiving enable.

Claims (2)

1. integral intelligent AC power case, is be applied to comprise in the low-voltage distribution system of main website, it is characterized in that described power supply box comprises: DSP subsystem, ARM subsystem and CPLD;

Described DSP subsystem controls for realizing measuring, protect and exporting;

Described ARM subsystem is used for realizing communication and keyboard & display;

Described DSP subsystem carries out exchanges data by described CPLD and described ARM subsystem.

2. integral intelligent AC power case according to claim 1, is characterized in that: described DSP subsystem comprises dsp chip, A/D sampling A/D chip and output control circuit; Described ARM subsystem comprises: ARM chip, touch-screen, Ethernet interface and RS485 bus communication interface;

Described ARM subsystem utilizes Ethernet interface and RS485 bus communication interface described in described ARM chip controls to obtain the control command of described main website transmission or controlling described touch-screen obtains manual control command and send to described DSP subsystem, and described DSP subsystem obtains described control command by described CPLD and utilizes described dsp chip to drive described output control circuit to carry out closed or opening operation to corresponding distribution line;

Described DSP subsystem utilize described dsp chip control described A/D sampling A/D chip real-time sampling each road voltage, the magnitude of current instantaneous value and utilize after carrying out Logic judgment described output control circuit perform protecting control; The electric parameter of gathered each distribution line and state of a control are passed to described ARM subsystem by described CPLD by described DSP subsystem, thus are uploaded to described main website for monitoring by the Ethernet interface of described ARM subsystem and RS485 bus communication interface.