CN201464546U

CN201464546U - Device for intelligently monitoring VFTO inside GIS

Info

Publication number: CN201464546U
Application number: CN2009200873233U
Authority: CN
Inventors: 杜忠东; 王晓琪; 陈轩恕; 刘飞; 李辉; 张�杰; 张良华; 尹婷; 杜砚; 赵军
Original assignee: Wuhan NARI Ltd
Current assignee: Wuhan NARI Ltd
Priority date: 2009-07-14
Filing date: 2009-07-14
Publication date: 2010-05-12
Anticipated expiration: 2019-07-14

Abstract

The utility model discloses a device for intelligently monitoring very fast transient overvoltage (VFTO) inside a geographic information system (GIS). The device comprises a flat-plate type wide frequency sensor, an acquisition module, a processing module and a communication module, wherein the acquisition module comprises a filtering circuit, a signal conditioning circuit, an simulated transmittal circuit and an analog-to-digital converter; the acquisition module adopts an inserted plate type structure design; the processing module adopts a DSP processor TM320LF2407; and the communication module consists of wireless units TC351 and PIC16F873 by adopting a wireless GPRS transmission mode. The device for intelligently monitoring the VFTO inside the GIS can monitor and store the VFTO generated by an isolating switch inside the GIS in a whole course, on line estimate insulation impact caused by the VFTO in real time on line, and give an early warning for the faults caused by insulation of the GIS, thereby avoiding power failure fault, and ensuring stable and reliable operation of the power grid.

Description

The device of the inner VFTO of intellectual monitoring GIS

Technical field

The utility model is about the device of the inner VFTO of intellectual monitoring GIS, belongs to the high-voltage intelligent technical field of electric appliances.

Background technology

In recent years the economic develop rapidly of China, power consumption rises year by year, and the electric load of urban area increases sharply, and the power transmission and distribution capacity significantly increases, and needs enlarging transformer station, but is subjected to the restriction of floor area and volume.Gas insulated combined electrical equipment GIS (Gas InsulatedSwitchgear) is applied and promotes; But GIS also has certain defective, in case coverage is very big when breaking down, and maintenance difficulty relatively, this causes great impact to grid stability, should avoid the generation of this type of fault as far as possible.The fault data of GIS is in the past analyzed and contrasted, find that the insulation fault in the GIS fault occupies the overwhelming majority; Along with the rising of network system grade of rated voltage, the fast transient problem that isolator operation causes in the GIS is more outstanding simultaneously, and the lightning impulse withstand voltage of equipment (LIWV) has been not enough to reflect the dielectric level of GIS equipment; Therefore, super, extra-high voltage GIS is inner owing to VFTO (Very Fast Transient Over-voltage) must in time grasp the influence that insulation causes, and avoids because VFTO causes large area blackout to the destruction of impacting of insulating.

At present, it is existing several that the insulation fault of GIS is carried out device for monitoring, also finds but specifically carry out device for monitoring at VFTO in the insulation fault.

The utility model content

The purpose of this utility model is to provide the intellectual monitoring GIS device of inner VFTO, the VFTO that it produces the GIS internal isolating switch carries out whole process monitoring and storage, to carrying out the online in real time assessment because the insulation that VFTO causes is impacted, to GIS since the fault that causes of Insulation Problems give warning in advance, avoid taking place the power failure fault, guarantee stabilization of power grids reliability service.

The technical solution of the utility model is: the device of the inner VFTO of intellectual monitoring GIS is characterized in that: comprise flat-plate type broad frequency sensor, acquisition module, processing module and communication module; Its annexation is: flat-plate type broad frequency sensor, acquisition module, processing module and communication module are connected successively.

The device of the inner VFTO of aforesaid intellectual monitoring GIS, it is characterized in that: acquisition module is made up of filtering circuit, signal conditioning circuit, discharge circuit and analog to digital converter, and its annexation is: filtering circuit, signal conditioning circuit, discharge circuit and analog to digital converter are connected successively.

The device of the inner VFTO of aforesaid intellectual monitoring GIS is characterized in that: acquisition module adopts the board plug type structural design.

The device of the inner VFTO of aforesaid intellectual monitoring GIS is characterized in that: processing module adopts dsp processor TMS320LF2407.

The device of the inner VFTO of aforesaid intellectual monitoring GIS, it is characterized in that: communication module is made up of radio-cell TC35I and PIC16F873.

The beneficial effects of the utility model are: adopt data acquisition module, DSP data processing module and GPRS communication module, the data that obtain are used for predicting the impact degree that the GIS built-in electrical insulation is suffered, compare with predefined insulation criterion, the normal operating condition, alert status and the fault that provide the GIS built-in electrical insulation are reported state for repairment, and alert status is sent to long-range personal terminal and Surveillance center.

Description of drawings

Fig. 1 is the principle schematic of the inner VFTO device of intellectual monitoring GIS of the utility model embodiment;

Fig. 2 is the structural representation of the inner VFTO device of intellectual monitoring GIS of the utility model embodiment;

Fig. 3 is the synoptic diagram of acquisition module among Fig. 1;

Fig. 4 is the synoptic diagram of communication module among Fig. 1;

Fig. 5 is the synoptic diagram of processing module among Fig. 1;

Fig. 6 is the utility model embodiment 1 principle schematic.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

The explanation of mark among Fig. 1: 1-flat-plate type broad frequency sensor, 2-acquisition module, 3-processing module, 4-communication module.

The explanation of mark among Fig. 2: the 5-power panel, second of 6-is core bus, 7-liquid crystal display, 8-LED lamp.

The explanation of mark among Fig. 3: 9-sensor, 10-filtering circuit, 11-modulate circuit, 12-discharge circuit, 13-high-precision adc, 14-TMS320LF2407.

Description of symbols among Fig. 4: TC35I and PIC16F87 are wireless communication units, and RS232 is a bus.

As shown in Figure 1, the inner VFTO device of the utility model embodiment intellectual monitoring GIS comprises flat-plate type broad frequency sensor 1, acquisition module 2, processing module 3 and communication module 4, and its annexation is that broad frequency sensor 1, acquisition module 2, processing module 3 and communication module 4 are connected successively.

As shown in Figure 3, the acquisition module part of the inner VFTO device of the utility model embodiment intellectual monitoring GIS mainly is made up of filtering circuit 10, modulate circuit 11, discharge circuit 12 and analog to digital converter 13.The voltage that filtering circuit 10 collects flat-plate type broad frequency sensor 9 carries out giving modulate circuit 11 after the Filtering Processing, 11 pairs of voltages that send of modulate circuit carry out giving discharge circuit 12 after the de-noising and amplify, at last amplifying signal is given analog to digital converter 13 and changed, the digital quantity after the conversion is by interrupting giving processing module 3.This acquisition module 2 adopts the board plug type structural design, and connected mode is that core bus connects.

As shown in Figure 4, the wireless communication module of the inner VFTO device of the utility model embodiment intellectual monitoring GIS is to adopt the wireless GPRS transmission mode.Wireless module of the present invention is made up of radio-cell TC35I and PIC16F873, and TC35I directly links to each other with PIC16F873, and communication mode and receiving terminal number to TC35I in PIC16F873 are set.Wireless communication module 4 is connected by the RS232 bus with processing module 3, realizes the transmission and the reception of data stream.The LED lamp shows that its state for green, is red during fault during wireless communication module 4 work.Need set it by the RS232 serial ports of PC during wireless communication module 4 first uses, as: communication mode and receiving terminal number etc.

As shown in Figure 5, the processing module of the inner VFTO device of the utility model embodiment intellectual monitoring GIS is to adopt dsp processor TMS320LF2407.Processing module is mainly by active crystal oscillator, DS1307, E ²PROM, RESET circuit, logic gate and MAX232CPE form.Clock chip adopts DS1307, adopts I ²The C bus is connected to TMS320LF2407; Logic gate is used programming device GAL20V8B chip; Bleed off electrical storage and adopt E ²PROM; Use the MCM2814 chip-stored and revise the voltage criterion value, MCM2814 adopts spi bus to be connected with TMS320LF2407; Communication interface adopts traditional RS232 interface, makes things convenient for program debug and is connected, and uses the Max232cpe of MAXIM to realize the RS232 interface function.

Fig. 6 is the utility model embodiment 1 principle schematic. GIS in regional power grid or the The Wide Area Power transformer station is carried out on-line monitoring, because this device adopts wireless transmission method, by renting the wireless special-purpose access interface of commmunication company, be transferred to cable network and carry out data transmission, wireless transmission data can store on the webserver, the people can inquire about and obtain by visit WEB data. and wireless transmission method makes and makes up extremely convenient that the GIS of transformer station monitoring in strange land becomes, for realizing that the inner unmanned of transformer station lays the first stone. by in the Surveillance center of regional power grid or The Wide Area Power, increasing by a station server, industrial computer and large screen display, get final product the VFTO change procedure of the GIS in the real-time display monitoring scope, make things convenient for the operations staff in time to grasp the GIS state of insulation.

Claims

1. the device of the inner VFTO of intellectual monitoring GIS comprises flat-plate type broad frequency sensor, acquisition module, processing module and communication module; Its annexation is: flat-plate type broad frequency sensor, acquisition module, processing module and communication module are connected successively.

2. the device of the inner VFTO of intellectual monitoring GIS according to claim 1, it is characterized in that: acquisition module is made up of filtering circuit, signal conditioning circuit, discharge circuit and analog to digital converter, and its annexation is: filtering circuit, signal conditioning circuit, discharge circuit and analog to digital converter are connected successively.

3. the device of the inner VFTO of intellectual monitoring GIS according to claim 2 is characterized in that: acquisition module adopts the board plug type structural design.

4. the device of the inner VFTO of intellectual monitoring GIS according to claim 1 is characterized in that: processing module adopts dsp processor TMS320LF2407.

5. the device of the inner VFTO of intellectual monitoring GIS according to claim 1, it is characterized in that: communication module is made up of radio-cell TC35I and PIC16F873.