Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of isolating switch on-Line Monitor Device, enables the multinomial important parameter of Real-time Collection isolating switch in operational process, and data is fed back in time site administrator and carry out monitoring and failture evacuation.
Adopt following technical scheme for this reason, a kind of isolating switch on-Line Monitor Device, comprise sensor assembly and on-line monitoring module, monitored to on-line monitoring module by sensor assembly transmission of signal, it is characterized in that: described on-line monitoring module comprises signal transmission module, data processing module, human-computer interaction module, Background communication module and background computer module, by signal transmission module, sensor assembly is connected with data processing module, described data processing module is connected with human-computer interaction module, by Background communication module, data processing module is connected with background computer module, described data processing module comprises A/D modular converter and the data analysis computing module of image data, described sensor assembly comprises stroke sensor, Hall current sensor and radio temperature sensor, described signal transmission module comprises signal converter, signal amplifier, low-pass filter and signal-frequenzer, described human-computer interaction module comprises the touch-screen of displaying scene data and the keyboard of setup parameter, described Background communication module is that 485 buses connect or wireless connections.
Further, the stroke sensor in described sensor assembly adopts angular displacement stroke sensor, and described angular displacement stroke sensor comprises rotating shaft and main part; With permanent magnet, the rotating shaft of stroke sensor is fixed on the main shaft of isolating switch by bindiny mechanism, stroke sensor main part is fixed on the shell of breaker mechanism by installing plate simultaneously.
Further, the wireless connections in described Background communication module adopt cdma wireless network to connect.
When normal operation of circuit breaker, described sensor assembly can gather the important parameter such as electric current, stroke, contact temperature in isolating switch operational process, by signal transmission module to after signal transacting, transfer data to data processing module and carry out analyzing and processing, data transfer to human-computer interaction module on the one hand afterwards, operating personnel are regulated and controled according to actual conditions by the touch-screen of human-computer interaction module and keyboard, data on the other hand by Background communication module transfer to background computer module to realize the function of long-range reception field data and store historical data.
Every important parameter when the utility model runs by gathering isolating switch, possibility Problems existing in isolating switch operational process can be diagnosed out, for field personnel's real time on-line monitoring, specific aim maintenance can be carried out after going wrong, avoid the tedious work of extensive prophylactic repair, improve work efficiency.Background communication function of the present utility model is strong simultaneously, both 485 buses can have been used to carry out field bus communication, wireless telecommunications can be realized again by cdma network, master-control room computing machine away from power distribution room or on-the-spot be inconvenient to the occasion that connection is set under, use wireless telecommunications just can realize remote monitoring function when networking arbitrarily.
Embodiment
See accompanying drawing.The present embodiment comprises sensor assembly and on-line monitoring module, monitored to on-line monitoring module by sensor assembly transmission of signal, described on-line monitoring module comprises signal transmission module, data processing module, human-computer interaction module, Background communication module and background computer module, by signal transmission module, sensor assembly is connected with data processing module, described data processing module is connected with human-computer interaction module, is connected by data processing module by Background communication module with background computer module; Described data processing module comprises A/D modular converter and the data analysis computing module of image data; Described sensor assembly comprises stroke sensor, Hall current sensor and radio temperature sensor; Described signal transmission module comprises signal converter, signal amplifier, low-pass filter and signal-frequenzer; Described human-computer interaction module comprises the touch-screen of displaying scene data and the keyboard of setup parameter; Described Background communication module is that 485 buses connect or cdma wireless network connects.
The data of sensor assembly are that voltage signal or current signal access signal transmission module by signal wire, the A/D modular converter of data processing module is sent into after signal transmission module processes signal, send human-computer interaction module to by serial ports on the one hand after data processing module carries out analyzing and processing to the A/D data collected by data analysis computing module, be sent to background computer module by Background communication module on the other hand.
Specifically, the stroke change in breaker mechanism on/off switch process is gathered by stroke sensor, gather on/off switch coil current, main circuit current and energy storage motor electric current by current sensor, gathered the transposition signal of auxiliary contacts of circuit breaker by On-off signal unit.Such as above-mentioned according to gather basis on determine combined floodgate initial time, close a floodgate finish time, separating brake initial time, separating brake finish time, according to national standard and practical experience, the present embodiment determines above-mentioned value in the following way: obtain the electric moment for combined floodgate initial time with closing coil, using major loop three-phase current all electric moment as combined floodgate finish time, obtain the electric moment as separating brake initial time using switching winding, the displacement time curve that separating brake finish time samples in conjunction with stroke sensor judges.On/off switch transposition signal determines speed amount after determining as follows: with on/off switch stroke divided by on/off switch timing definition on/off switch speed, the path increment divided with stroke middle front part closes or just-off speed for firm divided by by the timing definition required for the stroke of this part, and just having closed just-off speed is the important parameter characterizing isolating switch performance.The present embodiment also gathers energy storage motor current waveform simultaneously, in order to judge whether breaker energy storage process has fault; Acquire the temperature of major loop contact terminal, be wirelessly sent to data processing module, whether temperature is extraordinary to judge major loop with this, there is hidden danger.Above-mentionedly collect signal not only can have been checked but also can have been checked in long-range background computer module by the network function of device by on-the-spot touch-screen.
1) sensor assembly illustrates: the stroke sensor of the present embodiment adopts angular displacement stroke sensor, and described angular displacement stroke sensor comprises rotating shaft and main part; With permanent magnet, the rotating shaft of stroke sensor is fixed on the main shaft of isolating switch by bindiny mechanism, stroke sensor main part is fixed on the shell of breaker mechanism by installing plate simultaneously.Adopt permanent magnet to install simple and flexible, be applicable to various dissimilar mechanism, avoiding conventional mounting mode needs on main shaft, add mounting bracket and drawback poor for applicability.Described coil current sensor, main circuit current sensor and energy storage motor current sensor all adopt Hall-type current sensor, and mounting means all adopts core-theaded type to install, and fixed form adopts band to fix.
2) signal transmission module illustrates: all carried out low-pass filtering before the sensor signal feeding processor of the present embodiment, impedance transformation, current/voltage is changed, the Anti-Jamming Technique process such as Overvoltage suppressing, prevent the undesired signal access to plant that electromagnetic interference (EMI) or mains fluctuations due to scene produce.
3) data processing module illustrates: data acquisition is undertaken by A/D modular converter, the Wave data collected first is carried out to the data of anti-interference process deletion error, then carries out analytical calculation.
Run-length data: the stroke sensor data signal out of isolating switch is voltage signal, A/D modular converter is sampled to these data with the sample frequency of 20KHZ, sampling terminates first to preserve these master datas afterwards, then call software filtering routine and reject irrational point, the data of finally preserving.
Current data: isolating switch on-Line Monitor Device Hall element out be current signal, after being converted to voltage signal through modulate circuit, by above-mentioned same mode, these data are processed.
The analytical calculation of data: after data sampling terminates, for the isolating switch of different electric pressure, because the isolating switch of different electric pressure opens distance, coil current, the isoparametric range number of the excess of stroke is all had any different, if adopt identical calculation procedure, error is comparatively large, can be selected the computing formula of applicable range by data analysis computing module according to the parameters input of user, highly versatile, measuring accuracy is high.
4) Background communication module declaration: if the communication format of employing is 485 bus modes, communication has multiple communication protocol to select, and as MODBUS stipulations, 103 stipulations etc., can select communication protocol by toggle switch; If adopt cdma wireless transmission, then adopt udp protocol transmission data, run daemon software at background computer module place and receive data.
5) background computer module declaration: the good parameter of background computer module installation, press start button just to bring into operation, the data receiver in background computer module integration 485 directions and cdma wireless network side to data receiver, and a large amount of historical datas can be preserved, facilitate user to select.
Above-mentioned embodiment is only a kind of preferred version of the present utility model, and not all or unique embodiment, simple technological means displacement or equivalence change all belong to protection domain of the present utility model.