CN204028234U - The automatic nuclear phase monitoring device of a kind of online voltage - Google Patents
The automatic nuclear phase monitoring device of a kind of online voltage Download PDFInfo
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- CN204028234U CN204028234U CN201420443798.2U CN201420443798U CN204028234U CN 204028234 U CN204028234 U CN 204028234U CN 201420443798 U CN201420443798 U CN 201420443798U CN 204028234 U CN204028234 U CN 204028234U
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- converter
- nuclear phase
- processor
- monitoring device
- pass filter
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Abstract
The utility model relates to the automatic nuclear phase monitoring device of a kind of online voltage, comprises the AC converter, LPF simulation low-pass filter, A/D converter and the processor that connect successively; The high voltage received from D.C mutual-inductor is carried out step-down by described AC converter, and is transferred to described LPF simulation low-pass filter; Remaining simulating signal, after filtering higher hamonic wave, is sent described A/D converter by described simulation low-pass filter; Described A/D converter sends to processor after simulating signal is converted to digital signal; Described processor is also connected with man-machine conversation device, power supply and storer, this novel nuclear phase work accurately, convenient, accelerate equipment power transmission speed, reduce Danger Electric shock risk, increase work efficiency, ensure electrical equipment safe operation.
Description
Technical field
The utility model relates to the automatic nuclear phase monitoring device of a kind of online voltage, belongs to electric equipment operation security maintenance field.
Background technology
Before transformer station, power plant, circuit put into operation, or before main equipment such as transformation transformer, generator, motor etc. puts into operation, field personnel will carry out the wiring nuclear phase work of equipment.Nuclear phase work be the new or reforming equipment of checking once or secondary connection correctness, prevent equipment from causing the Main Means of short circuit, a requisite step in the power transmission program of the equipment of putting into operation because of wiring error.The equipment after voltage nuclear phase is correct is only had to carry out paired running.Present stage, China's power system transformer substation voltage secondary side nuclear phase common method is linked in the screen cabinet of Relatively centralized by the voltage of different bus, during nuclear phase, staff uses digimer to measure voltage difference between different bus, the foundation using this measurement result as nuclear phase correctness.This kind of method shortcoming one needs staff can measure to scene, easily causes because road far delays electric power feeding time; Two is that measurement result needs staff to judge, easily causes and causes nuclear phase by mistake because staff's technical merit is limited; Three is shield in cabinet because different busbar voltage is not pooled in intelligent substation, needs staff to prepare temporary cable when therefore measuring at every turn; Four be when checking become secondary side voltage due near charged position, easily cause Danger Electric shock risk.
Utility model content
The technical problems to be solved in the utility model is: for overcoming the problems referred to above, provides a kind of online voltage automatic nuclear phase monitoring device.
The utility model solves the technical scheme that its technical matters adopts:
The automatic nuclear phase monitoring device of a kind of online voltage, comprises the AC converter, LPF simulation low-pass filter, A/D converter and the processor that connect successively;
The high voltage received from D.C mutual-inductor is carried out step-down by described AC converter, and is transferred to described LPF simulation low-pass filter;
Remaining simulating signal, after filtering higher hamonic wave, is sent described A/D converter by described simulation low-pass filter;
Described A/D converter sends to processor after simulating signal is converted to digital signal;
Described processor is also connected with man-machine conversation device, power supply, storer and watchdog chip.
Preferably, described processor is also connected with liquid crystal display.
Preferably, described processor is also connected with LED.
Preferably, described processor is also connected with communication device by CAN.
Preferably, described processor is dsp chip.
The beneficial effects of the utility model are: the utility model structure is simple, described processor processes the magnitude of voltage calculating digital quantity in real time, by 6 road voltages before 8 road voltages totally 18 amounts calculate their pressure reduction between two, and compare with the threshold definite value preset, if higher than threshold value, report nuclear phase mistake, if lower than threshold value, report nuclear phase correct, each voltage mismatch setting value can be adjusted separately, each phase voltage value and pressure difference are between any two inquired about by button, be presented on liquid crystal display, and check for scheduling and operating maintenance personnel by communication device being delivered to terminal unit, this novel nuclear phase work accurately, convenient, accelerate equipment power transmission speed, reduce Danger Electric shock risk, increase work efficiency, ensure electrical equipment safe operation, this new design is used to save maintenance cost, can check that data judge nuclear phase correctness at scheduling station during nuclear phase, carry out nuclear phase work without the need to the person of sending someone and vehicle to scene, accelerate power equipment to put into operation speed, because nuclear phase timer is automatically measured, judged, a large amount of time can be saved, safe and reliable, owing to measuring at screen cabinet terminal block place or low-voltage distribution panel place without the need to staff, reduce and get an electric shock and touch equipment Risk by mistake, information sharing, can supply dispatcher and operations staff's remote browse data.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the front view of the utility model embodiment;
Fig. 2 is AC converter and Secondary Circuit of Potential Transformer wiring diagram in the utility model device.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
The automatic nuclear phase monitoring device of the online voltage of one described in the utility model as shown in Figure 1, comprises the AC converter, LPF simulation low-pass filter, A/D converter and the processor that connect successively;
The high voltage received from D.C mutual-inductor is carried out step-down by described AC converter, and be transferred to described LPF simulation low-pass filter, as shown in Figure 2,24, the 8 tunnel high voltage (in the present embodiment that described AC converter will be come from voltage transformer (VT), high voltage is 57.7v), required and the 12V voltage signal that allows of conversion cost device internal circuit, and carry out electrical isolation and shielding action, make common mode interference through the distributed capacitance between primary winding and screen layer ground connection, effectively can suppress common mode interference;
Described simulation low-pass filter, after filtering higher hamonic wave, only transmits the simulating signal of the 50HZ frequency needed for this device, is sent described A/D converter;
Described A/D converter sends to processor after simulating signal is converted to digital signal;
Described processor is also connected with man-machine conversation device, power supply and storer, processor processes the magnitude of voltage calculating digital quantity in real time, by 6 road voltages before 8 road voltages totally 18 amounts calculate their pressure reduction between two, and compare with the threshold definite value preset, if higher than threshold value, report nuclear phase mistake, if lower than threshold value, report nuclear phase correct, each voltage mismatch setting value can be adjusted separately, each phase voltage value and pressure difference are between any two inquired about by button, be presented on liquid crystal display, and check for scheduling and operating maintenance personnel by communication device being delivered to terminal unit, button in man-machine conversation device can carry out repacking to be put definite value, checks plant running state, adopted value etc., and sampled data, test report, nuclear phase result can be stored in described storer.
This novel group screen of can concentrating in actual use also can disperse to be arranged on high-voltage switch gear cashier's office in a shop, Installation and Debugging flexible and convenient on the spot, and adopts hermetically sealed design, adds well-designed anti-interference assembly, makes vibration resistance, anti-electromagnetic interference capability strong.Described processor is also connected with watchdog chip, makes whole system have higher measuring accuracy and antijamming capability simultaneously.
In preferred embodiments, described processor is also connected with liquid crystal display, and adopt full-localized large-screen lc to show in the present embodiment, examining report, switch fault report, voltage telemeering amount, fixed value adjusting etc. have clear and definite character mark, user-friendly and grasp.
In preferred embodiments, described processor is also connected with LED, is used to indicate duty.
In preferred embodiments, described processor is also connected with communication device by CAN, and communication modes adopts CAN mouth and controller area net interface, and structure is simple, only has two lines to be connected with outside; Transmission speed reaches as high as 1Mbps, and transmission range can reach 10kM farthest, adopts non-destructive arbitration, makes communication in station have very high efficiency and antijamming capability.
In preferred embodiments, described processor is dsp chip, and described dsp chip adopts DSP2812 in the present embodiment, and every cycle 32 point sampling, ensure that the high precision of the amount of measurement, adopts CRC inspection and can provide corresponding error processing capacity.
The operating voltage of the automatic nuclear phase monitoring device of the described online voltage that the present embodiment provides be DC220VA ± 10% or, pressure difference can setting range be 0-25V, bus voltage measurement precision is ± 0.5%, record trouble information is greater than 200, and temporal expressions mode is year, month, day, hour, min, second.
In sum, use this new design to save maintenance cost, can check that data judge nuclear phase correctness at scheduling station during nuclear phase, carry out nuclear phase work without the need to the person of sending someone and vehicle to scene; Accelerate power equipment to put into operation speed, because nuclear phase timer is automatically measured, judged, a large amount of time can be saved; Safe and reliable, owing to measuring at screen cabinet terminal block place or low-voltage distribution panel place without the need to staff, reduce and get an electric shock and touch equipment Risk by mistake; Information sharing, can supply dispatcher and operations staff's remote browse data.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on instructions, must determine its technical scope according to right.
Claims (5)
1. the automatic nuclear phase monitoring device of online voltage, is characterized in that, comprises the AC converter, LPF simulation low-pass filter, A/D converter and the processor that connect successively;
The high voltage received from D.C mutual-inductor is carried out step-down by described AC converter, and is transferred to described LPF simulation low-pass filter;
Remaining simulating signal, after filtering higher hamonic wave, is sent described A/D converter by described simulation low-pass filter;
Described A/D converter sends to processor after simulating signal is converted to digital signal;
Described processor is also connected with man-machine conversation device, power supply, storer and watchdog chip.
2. the automatic nuclear phase monitoring device of online voltage as claimed in claim 1, it is characterized in that, described processor is also connected with liquid crystal display.
3. the automatic nuclear phase monitoring device of online voltage as claimed in claim 2, it is characterized in that, described processor is also connected with LED.
4. the automatic nuclear phase monitoring device of online voltage as claimed in claim 3, it is characterized in that, described processor is also connected with communication device by CAN.
5. the automatic nuclear phase monitoring device of online voltage as claimed in claim 4, is characterized in that, described processor is dsp chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443798.2U CN204028234U (en) | 2014-08-07 | 2014-08-07 | The automatic nuclear phase monitoring device of a kind of online voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420443798.2U CN204028234U (en) | 2014-08-07 | 2014-08-07 | The automatic nuclear phase monitoring device of a kind of online voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028234U true CN204028234U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420443798.2U Expired - Fee Related CN204028234U (en) | 2014-08-07 | 2014-08-07 | The automatic nuclear phase monitoring device of a kind of online voltage |
Country Status (1)
| Country | Link |
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| CN (1) | CN204028234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514911A (en) * | 2019-08-28 | 2019-11-29 | 西安热工研究院有限公司 | A kind of system and method for power plant high voltage bus power supply nuclear phase |
-
2014
- 2014-08-07 CN CN201420443798.2U patent/CN204028234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514911A (en) * | 2019-08-28 | 2019-11-29 | 西安热工研究院有限公司 | A kind of system and method for power plant high voltage bus power supply nuclear phase |
| CN110514911B (en) * | 2019-08-28 | 2021-08-24 | 西安热工研究院有限公司 | System and method for generating power plant high-voltage bus power supply phase checking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |