CN102621372A - CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage - Google Patents
CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage Download PDFInfo
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- CN102621372A CN102621372A CN2012100795635A CN201210079563A CN102621372A CN 102621372 A CN102621372 A CN 102621372A CN 2012100795635 A CN2012100795635 A CN 2012100795635A CN 201210079563 A CN201210079563 A CN 201210079563A CN 102621372 A CN102621372 A CN 102621372A
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Abstract
The invention discloses a CVT (Constant-Voltage Transformer) monitoring device for monitoring an MOA (Metal Oxide Arrester) voltage. The CVT monitoring device is connected with three CVTs, and comprises a microprocessor, an amplifying circuit, a wireless communication module, a storage and a protection circuit, wherein the amplifying circuit, the wireless communication module and the storage are connected with the microprocessor respectively; the protection circuit is connected with the amplifying circuit and the three CVTs; the amplifying circuit is used for amplifying the acquired three-phase voltage of an MOA and transmitting to the microprocessor; and the microprocessor is used for receiving the three-phase voltage of the MOA, storing into the storage, calculating the instant phase of the three-phase voltage of the MOA, and transmitting through the wireless communication module. The CVT monitoring device is used for monitoring and acquiring the three-phase voltage of the MOA, so that CVT secondary side wiring in conventional measuring process is avoided.
Description
Technical field
The present invention relates to a kind of CVT monitoring device that is used to monitor MOA (Zinc-Oxide Arrester) voltage.
Background technology
Traditional Zinc-Oxide Arrester detection system is introduced required voltage signal and current signal in the same equipment; Voltage signal is that the secondary side of the capacitance type potential transformer (CVT) from transformer station takes out; Current signal can take out through current transformer from the ground wire of Zinc-Oxide Arrester (MOA), and perhaps the lightning stroke counter through the Zinc-Oxide Arrester lower end records.Therefore, owing to adopt same equipment, so need be in the secondary side wiring of CVT during measurement voltage signal, this just brings very big trouble and hidden danger.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of CVT monitoring device that is used to monitor MOA voltage is provided, it is fixedly mounted near the CVT, in order to monitoring with gather the MOA three-phase voltage, has avoided the CVT secondary side wiring in the traditional measurement process.
The technical scheme that realizes above-mentioned purpose is: a kind of CVT monitoring device that is used to monitor MOA voltage; It connects three CVT; Comprise microprocessor (MCU); And the amplifying circuit, wireless communication module and the storer that are connected respectively with this microprocessor, and the holding circuit that connects said amplifying circuit, wherein:
Said holding circuit connects described three CVT;
Said amplifying circuit is passed to described microprocessor after the MOA three-phase voltage of gathering is amplified;
Said microprocessor receives the MOA three-phase voltage and deposits said storer in, and calculates the instantaneous phase of this MOA three-phase voltage, and sends out through said wireless communication module.
The above-mentioned CVT monitoring device that is used to monitor MOA voltage, wherein, said CVT monitoring device also comprises GPS (GPS) module that connects said microprocessor.
The above-mentioned CVT monitoring device that is used to monitor MOA voltage, wherein, said holding circuit is a resistance.
The above-mentioned CVT monitoring device that is used to monitor MOA voltage, wherein, said amplifying circuit is an amplifier.
The invention has the beneficial effects as follows: near the CVT of being fixedly mounted on of the present invention, monitor and collection MOA three-phase voltage, and can calculate the instantaneous phase of MOA three-phase voltage, avoided the CVT secondary side wiring in the traditional measurement process.Simultaneously, the present invention is simple in structure, and is with low cost, has advantages of high practicability.
Description of drawings
Fig. 1 is the structural representation that is used to monitor the CVT monitoring device of MOA voltage of the present invention.
Embodiment
To combine accompanying drawing that the present invention is described further below.
See also Fig. 1; The CVT monitoring device that is used to monitor MOA voltage of the present invention, it is fixedly mounted near the CVT, connects three CVT; Comprise microprocessor 1; And the amplifying circuit 2, wireless communication module 3 and the storer 4 that are connected respectively with this microprocessor 1, and the holding circuit 5 that connects amplifying circuit 2, wherein:
Amplifying circuit 2 is passed to microprocessor 1 after the MOA three-phase voltage of gathering is amplified, thereby makes measurement in gamut, keep higher degree of accuracy, and with existing techniques in realizing, in the present embodiment, its structure is an amplifier;
In the present embodiment; Said CVT monitoring device also comprises the GPS module 6 that connects microprocessor 1; This GPS module 6 plays the effect of synchro measure time with measuring the built-in GPS module of the circuital device (not shown) of MOA, makes MOA total current and MOA three-phase voltage synchro measure.The circuital device of described then measurement MOA receives the instantaneous phase of above-mentioned MOA three-phase voltage, and combines synchronous MOA total current, just can calculate the current in resistance property of MOA.The present invention is with low cost, and is simple in structure, so can be fixedly mounted on the CVT annex in a large number, avoided the CVT secondary side wiring in the traditional measurement process.In the present embodiment, the model that microprocessor 1 is selected for use is C8051F040; The model of wireless communication module 3 is RFC-30A.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; The technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (4)
1. CVT monitoring device that is used to monitor MOA voltage, it connects three CVT, it is characterized in that; Comprise microprocessor; And the amplifying circuit, wireless communication module and the storer that are connected respectively with this microprocessor, and the holding circuit that connects said amplifying circuit, wherein:
Said holding circuit connects described three CVT;
Said amplifying circuit is passed to described microprocessor after the MOA three-phase voltage of gathering is amplified;
Said microprocessor receives the MOA three-phase voltage and deposits said storer in, and calculates the instantaneous phase of this MOA three-phase voltage, and sends out through said wireless communication module.
2. the CVT monitoring device that is used to monitor MOA voltage according to claim 1 is characterized in that said CVT monitoring device also comprises the GPS module that connects said microprocessor.
3. the CVT monitoring device that is used to monitor MOA voltage according to claim 1 is characterized in that said holding circuit is a resistance.
4. according to claim 1 or the 3 described CVT monitoring devices that are used to monitor MOA voltage, it is characterized in that said amplifying circuit is an amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100795635A CN102621372A (en) | 2012-03-22 | 2012-03-22 | CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100795635A CN102621372A (en) | 2012-03-22 | 2012-03-22 | CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage |
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| CN102621372A true CN102621372A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100795635A Pending CN102621372A (en) | 2012-03-22 | 2012-03-22 | CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604991A (en) * | 2013-11-26 | 2014-02-26 | 国家电网公司 | Device and method for measuring bus voltage phase of capacitor voltage transformer |
| CN104280637A (en) * | 2014-10-11 | 2015-01-14 | 国家电网公司 | Lightning arrester online monitoring signal collection device with shielding function |
| CN106468730A (en) * | 2015-08-19 | 2017-03-01 | 中国电力科学研究院 | A kind of extra-high voltage direct-current potentiometer wireless measuring system |
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| CN202093082U (en) * | 2011-03-25 | 2011-12-28 | 山东电力集团公司德州供电公司 | Split type synchronously resistive current live line measurement device of metallic oxide lightning arrester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604991A (en) * | 2013-11-26 | 2014-02-26 | 国家电网公司 | Device and method for measuring bus voltage phase of capacitor voltage transformer |
| CN103604991B (en) * | 2013-11-26 | 2017-03-08 | 国家电网公司 | The busbar voltage phase measurement device of capacitance type potential transformer and method |
| CN104280637A (en) * | 2014-10-11 | 2015-01-14 | 国家电网公司 | Lightning arrester online monitoring signal collection device with shielding function |
| CN106468730A (en) * | 2015-08-19 | 2017-03-01 | 中国电力科学研究院 | A kind of extra-high voltage direct-current potentiometer wireless measuring system |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20121015 |
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Effective date of registration: 20121015 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation |
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Application publication date: 20120801 |