CN204516020U - A kind of radio transmitting device for voltage analog in intelligent substation - Google Patents
A kind of radio transmitting device for voltage analog in intelligent substation Download PDFInfo
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- CN204516020U CN204516020U CN201520168283.0U CN201520168283U CN204516020U CN 204516020 U CN204516020 U CN 204516020U CN 201520168283 U CN201520168283 U CN 201520168283U CN 204516020 U CN204516020 U CN 204516020U
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 4
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- 238000004458 analytical method Methods 0.000 description 2
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Abstract
The utility model discloses a kind of radio transmitting device for voltage analog in intelligent substation, comprise voltage discharge module and voltage receiver module, described voltage discharge module is connected by wireless communication module with voltage receiver module; Achieve power-frequency voltage amount wireless transmission, busbar voltage analog quantity in intelligent substation bus PT convergence control cabinet is sent to mobile terminal, supply pincerlike phase meter, be convenient to onload examination work, can reduce in current intelligent substation and do with long cable the trouble that onload examination brings, reduce in this process the risk being easier to the busbar voltage short circuit occurred.Employ the electrical combination of the sample circuit of CHV-50P, the radiating circuit of CD4046, the receiving circuit of CD4046 and SPT204A, achieve the busbar voltage wireless transmission in intelligent substation.
Description
Technical field
The utility model relates to a kind of radio transmitting device for voltage analog in intelligent substation.
Background technology
Onload examination is the important measures preventing protective relaying maloperation, tripping accident in relay protection of power system." relay protection examination code " specifies; protector revise is complete put into operation time; all require to carry out onload examination work; detailed programs are: the 1. phase relation of measuring voltage and electric current; calculated load; and compare with actual load flow situations, check TA no-load voltage ratio, polarity and current return correctness, ensure high-frequency orientation protector correct operation.2. be reference with busbar voltage, measure phase place and the size of differential protection each side electric current, judge differential protection each side TA no-load voltage ratio, polarity and current return correctness, to ensure differential protection correct operation.
But, all there are the electric current under this interval method of operation and busbar voltage analog quantity in each protection screen of traditional transformer station, when carrying out onload examination work with pincerlike phase meter, the required magnitude of current and voltage can easily be got.
And intelligent substation busbar voltage is all sampled by bus merge cells at present, by optical cable, voltage is sent to each interval merge cells with light signal form, when carrying out traditional onload examination work to monospace, pincerlike phase meter cannot access the several bus convergence control cabinet median generatrix voltage analogs even going up ten spaced far of being separated by, long cable can only be used to carry out voltage access, to the trouble that onload examination brings, add the risk of this process median generatrix voltage short circuit.
Summary of the invention
The utility model provides a kind of radio transmitting device for voltage analog in intelligent substation, its object is to overcome when carrying out onload examination to intelligent substation in prior art, troublesome poeration, and there is certain short-circuit risks.
For a radio transmitting device for intelligent substation onload examination voltage, comprise voltage discharge module and voltage receiver module, described voltage discharge module is connected by wireless communication module with voltage receiver module;
Described voltage discharge module is arranged in intelligent substation bus PT convergence control cabinet, comprises the first voltage filter unit, voltage acquisition unit, the first phase locking unit, modulating unit and the radio communication transmitting element that are connected successively;
Described first voltage filter unit is connected with the busbar voltage terminal in intelligent substation bus PT convergence control cabinet by test contact pin;
Described voltage receiver module is installed on mobile terminals, comprises the wireless communication receiver unit, demodulating unit, the second phase locking unit, the second voltage filter unit and the voltage amplification unit that are connected successively;
Described voltage amplification unit is connected with pincerlike phase meter by test contact pin.
Described first voltage filter unit and voltage acquisition unit are the sample circuit of band Hall voltage sensor CHV-50P.
Described first phase locking unit, modulating unit and radio communication transmitting element are the radiating circuit being with phase-locked chip CD4046.
Described wireless communication receiver unit, demodulating unit and the second phase locking unit are the receiving circuit being with phase-locked chip CD4046.
Described second voltage filter unit and voltage amplification unit are the amplifying circuit of mutual inductor SPT204A with voltage.
Wherein, SPT204A is a milliampere level accurate voltage mutual inductor, and input rated current is 2mA, and output-current rating is 2mA, the range of linearity ± 10mA, and nonlinearity <0.1%, phase shift is less than 5 ' after over-compensation.CHV-50P type voltage sensor output and former limit circuit are electric isolution, can measure direct current, interchange and pulsating volage or small area analysis.
Beneficial effect
The utility model provides a kind of radio transmitting device for voltage analog in intelligent substation, comprises voltage discharge module and voltage receiver module, and described voltage discharge module is connected by communication with voltage receiver module; Achieve power-frequency voltage amount wireless transmission, busbar voltage analog quantity in intelligent substation bus PT convergence control cabinet is sent to mobile terminal, be convenient to onload examination work, can reduce in current intelligent substation and do with long cable the trouble that onload examination brings, reduce in this process the risk being easier to the busbar voltage short circuit occurred.Employ the electrical combination of the sample circuit of CHV-50P, the radiating circuit of CD4046, the receiving circuit of CD4046 and SPT204A, achieve the busbar voltage wireless transmission in intelligent substation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is principle of work schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As depicted in figs. 1 and 2, a kind of radio transmitting device for voltage analog in intelligent substation, comprises voltage discharge module and voltage receiver module, and described voltage discharge module is connected by wireless communication module with voltage receiver module;
Described voltage discharge module is arranged in intelligent substation bus PT convergence control cabinet, comprises the first voltage filter unit, voltage acquisition unit, the first phase locking unit, modulating unit and the radio communication transmitting element that are connected successively;
Described first voltage filter unit is connected with busbar voltage terminal in intelligent substation bus PT convergence control cabinet by test contact pin;
Described voltage receiver module is installed on mobile terminals, comprises the wireless communication receiver unit, demodulating unit, the second phase locking unit, the second voltage filter unit and the voltage amplification unit that are connected successively;
Described voltage amplification unit is connected with pincerlike phase meter by test contact pin.
Described first voltage filter unit and voltage acquisition unit are the sample circuit of band Hall voltage sensor CHV-50P.
Described first phase locking unit, modulating unit and radio communication transmitting element are the radiating circuit being with phase-locked chip CD4046.
Described wireless communication receiver unit, demodulating unit and the second phase locking unit are the receiving circuit being with phase-locked chip CD4046.
Described second voltage filter unit and voltage amplification unit are the amplifying circuit of mutual inductor SPT204A with voltage.
Wherein, SPT204A is a milliampere level accurate voltage mutual inductor, and input rated current is 2mA, and output-current rating is 2mA, the range of linearity ± 10mA, and nonlinearity <0.1%, phase shift is less than 5 ' after over-compensation.CHV-50P type voltage sensor output and former limit circuit are electric isolution, can measure direct current, interchange and pulsating volage or small area analysis.
Utilize this device to send and access bus power-frequency voltage signal in bus PT convergence control cabinet, amplify, for pincerlike phase meter provides busbar voltage amount to portable terminal device demodulation at a distance.
Claims (5)
1. for a radio transmitting device for voltage analog in intelligent substation, it is characterized in that, comprise voltage discharge module and voltage receiver module, described voltage discharge module is connected by wireless communication module with voltage receiver module;
Described voltage discharge module is arranged in intelligent substation bus PT convergence control cabinet, comprises the first voltage filter unit, voltage acquisition unit, the first phase locking unit, modulating unit and the radio communication transmitting element that are connected successively;
Described first voltage filter unit is connected with the busbar voltage terminal in intelligent substation bus PT convergence control cabinet by test contact pin;
Described voltage receiver module is installed on mobile terminals, comprises the wireless communication receiver unit, demodulating unit, the second phase locking unit, the second voltage filter unit and the voltage amplification unit that are connected successively;
Described voltage amplification unit is connected with pincerlike phase meter by test contact pin.
2. a kind of radio transmitting device for voltage analog in intelligent substation according to claim 1, is characterized in that, described first voltage filter unit and voltage acquisition unit are the sample circuit of band Hall voltage sensor CHV-50P.
3. a kind of radio transmitting device for voltage analog in intelligent substation according to claim 2, is characterized in that, described first phase locking unit, modulating unit and radio communication transmitting element are the radiating circuit being with phase-locked chip CD4046.
4. a kind of radio transmitting device for voltage analog in intelligent substation according to claim 1, is characterized in that, described wireless communication receiver unit, demodulating unit and the second phase locking unit are the receiving circuit being with phase-locked chip CD4046.
5. a kind of radio transmitting device for voltage analog in intelligent substation according to claim 4, is characterized in that, described second voltage filter unit and voltage amplification unit are the amplifying circuit of mutual inductor SPT204A with voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520168283.0U CN204516020U (en) | 2015-03-24 | 2015-03-24 | A kind of radio transmitting device for voltage analog in intelligent substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520168283.0U CN204516020U (en) | 2015-03-24 | 2015-03-24 | A kind of radio transmitting device for voltage analog in intelligent substation |
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| CN204516020U true CN204516020U (en) | 2015-07-29 |
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| CN201520168283.0U Active CN204516020U (en) | 2015-03-24 | 2015-03-24 | A kind of radio transmitting device for voltage analog in intelligent substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834991A (en) * | 2021-09-22 | 2021-12-24 | 云南电网有限责任公司电力科学研究院 | Analog quantity remote transmission method and device |
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2015
- 2015-03-24 CN CN201520168283.0U patent/CN204516020U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113834991A (en) * | 2021-09-22 | 2021-12-24 | 云南电网有限责任公司电力科学研究院 | Analog quantity remote transmission method and device |
| CN113834991B (en) * | 2021-09-22 | 2024-04-19 | 云南电网有限责任公司电力科学研究院 | Analog quantity remote transmission method and device |
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