CN204389607U - High-low pressure phase place no-load voltage ratio measuring instrument - Google Patents
High-low pressure phase place no-load voltage ratio measuring instrument Download PDFInfo
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- CN204389607U CN204389607U CN201420867930.2U CN201420867930U CN204389607U CN 204389607 U CN204389607 U CN 204389607U CN 201420867930 U CN201420867930 U CN 201420867930U CN 204389607 U CN204389607 U CN 204389607U
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Abstract
The utility model relates to a kind of high-low pressure phase place no-load voltage ratio measuring instrument for power measurement field.Comprise for low pressure end voltage, current measurement main frame and can be used for the high-voltage radio current clamp of high-pressure side current measurement; Serial wireless communication mode is adopted between main frame and high-voltage radio current clamp; This measuring instrument not only achieves the survey calculation of low pressure end voltage, electric current electrical quantity and high-tension current frequency, amplitude, also achieve the survey calculation of the electrical quantitys such as phase place, no-load voltage ratio, power between high-tension current and low voltage voltage or electric current, and these results are exported show over the display.The proposition of this measuring instrument, makes can carry out effectively high-pressure side power, mutual inductor polarity, loadtype, monitor accurately or differentiate in practical application.
Description
Technical field
The utility model relates to a kind of high-low pressure phase place no-load voltage ratio measuring instrument for power measurement field.
Background technology
At present, in electric power measuring device on market, be mostly frequency, amplitude to the result of high-voltage current measurement, only minority product also can only carry out the use of nuclear phase, does not almost have product can carry out the measurement of phase place between high-tension current and low voltage voltage or electric current.
The disappearance of one of high-tension current firm power parameter phase place, makes can not carry out effectively high-pressure side power, mutual inductor polarity, loadtype, monitor accurately or differentiate in practical application.
Summary of the invention
For solving above-mentioned present situation, the utility model provides a kind of high-low pressure phase place no-load voltage ratio measuring instrument, comprise for low pressure end voltage, current measurement main frame and can be used for the high-voltage radio current clamp of high-pressure side current measurement; This measuring instrument not only achieves the survey calculation of low pressure end voltage, electric current electrical quantity and high-tension current frequency, amplitude, also achieve the survey calculation of the electrical quantitys such as phase place, no-load voltage ratio, power between high-tension current and low voltage voltage or electric current, and these results are exported show over the display; Main frame and high-voltage radio current clamp are respectively provided with power supply and power.
Serial wireless communication mode is adopted between above-mentioned high-low pressure phase place no-load voltage ratio measuring instrument main frame and high-voltage radio current clamp.
Described high-low pressure phase place no-load voltage ratio measuring instrument main frame, comprise voltage measurement circuit, current measurement circuit, display, host-processor and serial radio receiving transmitting module, low voltage voltage, current signal access respective measuring circuit by input port and carry out the process such as filtering, shaping, amplification; The output signal of measuring circuit is connected with host-processor; Host-processor is connected to display, for metrical information being shown; Serial radio receiving transmitting module is connected with host-processor, communicates for clamping with high-voltage radio.
Above-mentioned high-voltage radio current clamp, comprises high-voltage current measurement circuit, wireless pincers processor and serial radio receiving transmitting module; High-tension current signal carries out filtering, shaping, amplification process through high-voltage current measurement circuit; High-voltage current measurement line output signal is connected with wireless pincers processor; Serial radio receiving transmitting module is connected with wireless pincers processor, for communicating with main frame.
When the utility model high-low pressure phase place no-load voltage ratio measuring instrument is measured:
The rising of the square-wave signal that host-processor inputs with phase reference passage or negative edge, for the enabling signal started measured by high-low pressure phase place no-load voltage ratio measuring instrument, open main frame and measure; Measurement startup command is sent to high-voltage radio current clamp by serial radio receiving transmitting module simultaneously; Main frame calculates the frequency of each passage, amplitude and reference phase value after arriving the metering cycle of setting; Wherein reference phase value is: each Measurement channel all comprising phase reference passage, measures the phase place of initial time relative to main frame.
Wireless pincers processor is by serial radio receiving transmitting module, receive after measuring startup command, open high-voltage current measurement, calculated rate after measurement completes, amplitude and reference phase value, the calculating of reference phase value adopts the collection of high-tension current phase signal to be fixed the method for time delay correction: the collection of wireless pincers processor also stores phase square wave signal moment of high-tension current, after arriving the metering cycle of setting, based on square wave time-ofday signals, utilization is measured the delay of initial time between machine and high-voltage radio current clamp, high-tension current square wave time-ofday signals is revised, thus calculate high-tension current measures initial time reference phase value relative to main frame, wherein, because wireless transmission rate is high, apart from short, the phase value of the time conversion of transmission of wireless signals, be far smaller than phase error, can ignore, therefore the measurement start delay between main frame, high-voltage radio current clamp, for time of serial line data sending and wireless pincers processor receive serial data after the fixed delay time that starts, fix in serial rate, the frame length that communicates fixing, the time of serial transmitting-receiving is also fixed, and the measurement start delay therefore between main frame and high-voltage radio current clamp is fixed value, and can survey at last, thus realize the measurement of high-tension current reference phase value, main frame is waiting receive main frame phase place querying command after, this reference phase value is returned to main frame by serial wireless module,
Described in connecting, after main frame receives high-voltage radio pincers phase place rreturn value, with the reference phase value of reference channel for benchmark, calculate the phase value of low voltage voltage, electric current and high-tension current, so far, by once complete measurement, achieve low voltage voltage or the measurement of phase place between electric current and high-tension current.
The utility model high-low pressure phase place no-load voltage ratio measuring instrument, by once complete measurement, the measurement of low voltage voltage, electric current, the frequency of high-tension current, amplitude, phase place can be realized, can be calculated the electrical quantitys such as the power of each electric current of the no-load voltage ratio of high-low pressure electric current, low voltage voltage and high-low pressure, and by display, measurement result is shown.
The utility model high-low pressure phase place no-load voltage ratio measuring instrument, main frame also can work independently and realize survey calculation to low pressure end voltage, electric current electrical quantity, and measurement result is shown by display.
Accompanying drawing explanation
Particular content of the present utility model is illustrated further below in conjunction with drawings and Examples:
Fig. 1: the one-piece construction schematic diagram of the present embodiment;
Fig. 2: the present embodiment main machine structure schematic diagram;
Fig. 3: the present embodiment high-voltage radio current clamp structural representation;
Fig. 4: the present embodiment measures start-up study schematic diagram.
Embodiment
With reference to Fig. 1, the insulating bar 8 that the present embodiment comprises main frame 1, high-voltage radio current clamp 2 and connects; Wherein main frame comprises low voltage voltage current input terminal 5, display 3, keyboard 6 and upper machine dual-mode antenna 4; High-voltage radio current clamp comprises high-voltage radio current clamp wireless receiving and dispatching antenna 7.
With reference to Fig. 2, for described host structure chart, the output signal of low voltage voltage input end and measuring circuit 11, low-tension current input end and measuring circuit 12 thereof, be connected to host-processor 9, keyboard 6 output signal is connected to host-processor, and host-processor connects display 10, for display measurement result, host serial wireless module 13 is connected to host-processor, and main frame wireless receiving and dispatching antenna 4 connects host serial wireless module, and host power supply module 14 provides the power supply of host work;
With reference to Fig. 3, for described high-voltage radio current clamp structural drawing, the output signal of high-voltage current measurement circuit 16, be connected to wireless pincers processor 15, wireless pincers serial wireless module 17 is connected to wireless pincers processor, wireless pincers wireless receiving and dispatching antenna 7 connects wireless pincers serial wireless module 17, and wireless pincers power module 18 provides the power supply of high-voltage radio current clamp work.
With reference to Fig. 4, for this example measures start-up study schematic diagram, axle 19 times at one time, main frame starts host side low pressure measurement in the moment 20, sends simultaneously measure startup command 24 to high-voltage radio current clamp, through wireless transmission, high-voltage radio current clamp starts to receive the main frame consistent with 24 in the time 21 and measures startup command 25, and after receiving in the moment 22, long delay 26 when opening fixing immediately, long delay 26 terminates the measurement of rear startup to high-tension current in the moment 23 when clamped, main frame and high-voltage radio current clamp measure between delay be 20 to the time of moment 23, wherein the delay of wireless transmission is 20 to the moment of moment 21, due to the two-forty of radio communication, short-range feature, as calculated and actual measurement, be not enough to the precision and the error that affect phase measurement the time delay in 20 to moment of moment 21, can ignore, the time delay of therefore measuring startup between main frame and high-voltage radio current clamp is 21 to the moment of moment 23, in serial transmission speed, when data frame length and delay 26 are fixed, 21 to the moment of moment 23 is a fixed value, thus realize being as the criterion with main frame measurement Startup time, wireless pincers processor is to the correction of the high-tension current phase signal of input, then the reference phase value of high-tension current is obtained.
Within a complete measuring period, after host-processor obtains the reference phase value of low voltage voltage, electric current and high-tension current, calculating with reference channel is each channel phases value of reference, again in conjunction with frequency, the amplitude result of each passage, calculate the electrical quantitys such as no-load voltage ratio, power, power factor, and by display, measurement result is shown.
In the present embodiment, upper machine can work independently, and realizes survey calculation and the result display of low pressure end input signal.
Claims (3)
1. a high-low pressure phase place no-load voltage ratio measuring instrument, comprises measuring instrument main frame, high-voltage radio current clamp;
Described measuring instrument main frame comprises voltage measurement circuit, current measurement circuit, display, host-processor and radio receiving transmitting module; Described high-voltage radio pincers comprise high-voltage current measurement circuit, wireless pincers processor and radio receiving transmitting module;
It is characterized in that: measuring instrument main frame is communicated by the mode that serial is wireless with high-voltage radio current clamp.
2. measuring instrument main frame according to claim 1, is characterized in that: can measure low pressure end voltage, electric current separately, obtains frequency, amplitude, phase place, power, these electrical quantitys of no-load voltage ratio.
3. high-low pressure phase place no-load voltage ratio measuring instrument according to claim 1, it is characterized in that: main frame is communicated with high-voltage radio current clamp by the mode that serial is wireless, can obtain the frequency of high-tension current, amplitude and and phase place between host input voltages or electric current, calculate the electrical quantity such as no-load voltage ratio, power, and the output of these results is shown over the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867930.2U CN204389607U (en) | 2014-12-28 | 2014-12-28 | High-low pressure phase place no-load voltage ratio measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867930.2U CN204389607U (en) | 2014-12-28 | 2014-12-28 | High-low pressure phase place no-load voltage ratio measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389607U true CN204389607U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420867930.2U Expired - Fee Related CN204389607U (en) | 2014-12-28 | 2014-12-28 | High-low pressure phase place no-load voltage ratio measuring instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN204389607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652133A (en) * | 2016-03-26 | 2016-06-08 | 国家电网公司 | CT wireless tester based on cell phone platform and synchronous testing method |
| CN115835051A (en) * | 2022-10-31 | 2023-03-21 | 武汉慧联无限科技有限公司 | Method, device, processing equipment and storage medium for executing predetermined operation |
-
2014
- 2014-12-28 CN CN201420867930.2U patent/CN204389607U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652133A (en) * | 2016-03-26 | 2016-06-08 | 国家电网公司 | CT wireless tester based on cell phone platform and synchronous testing method |
| CN115835051A (en) * | 2022-10-31 | 2023-03-21 | 武汉慧联无限科技有限公司 | Method, device, processing equipment and storage medium for executing predetermined operation |
| CN115835051B (en) * | 2022-10-31 | 2023-09-29 | 武汉慧联无限科技有限公司 | Method, apparatus, processing device and storage medium for performing predetermined operation |
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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 |
Granted publication date: 20150610 Termination date: 20151228 |
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| EXPY | Termination of patent right or utility model |