CN201867486U - Testing device for field operation annual stability of photoelectric current transformer - Google Patents

Testing device for field operation annual stability of photoelectric current transformer Download PDF

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Publication number
CN201867486U
CN201867486U CN2010205789641U CN201020578964U CN201867486U CN 201867486 U CN201867486 U CN 201867486U CN 2010205789641 U CN2010205789641 U CN 2010205789641U CN 201020578964 U CN201020578964 U CN 201020578964U CN 201867486 U CN201867486 U CN 201867486U
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CN
China
Prior art keywords
electric energy
electromagnetic
mutual inductor
energy meter
electric
Prior art date
Application number
CN2010205789641U
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Chinese (zh)
Inventor
陈文中
王之浩
陆志浩
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华东电力试验研究院有限公司
华东电网有限公司
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Priority to CN2010205789641U priority Critical patent/CN201867486U/en
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Publication of CN201867486U publication Critical patent/CN201867486U/en

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Abstract

The utility model relates to a testing device for field operation annual stability of a photoelectric current transformer, which comprises at least one electromagnetic current transformer, at least one electromagnetic voltage transformer, a first electrical energy meter, at least one optical current transformer, a signal conditioning unit and a second electrical energy meter, wherein the first electrical energy meter is connected with the electromagnetic current transformer and the electromagnetic voltage transformer; the number of the optical current transformer is the same with that of the electromagnetic current transformer; and the second electrical energy meter is connected with the optical current transformer and connected with the electromagnetic voltage transformer through the signal conditioning unit. The testing device can be used for detecting and verifying annual operation stability, reliability, high precision and other performances of the optical current transformer in harsh operation environments.

Description

The proving installation of photo-electric current mutual inductor on site operation year stability

Technical field

The utility model relates to a kind of proving installation of photo-electric current mutual inductor on site operation year stability.

Background technology

At present; widespread use is electromagnetic current transducer in electric system; but along with electric system develops to high capacity, high-tension direction; factory, stand and system digitalized measurement, protection, scheduling and control have become the trend of development, the requirement of the miniaturization that power equipment is proposed, intellectuality, high reliability is also more and more higher.Existing electromagnetic current transducer is because the various deficiencies of its design feature and existence can not satisfy this requirement.

Compare with traditional electromagnetic current transducer, the photo-electric current transformer (OpticalCurrent Transformer OCT) has following series of advantages:

1. good insulating property and cheap price

By the iron core coupling, the insulation system complexity between them, its cost are exponential relationship with electric pressure and rise between the high voltage bus of electromagnetic current transducer and the secondary coil.Photo-electric current transformer material therefor is a glass, and insulating material such as optical fiber come transmission information, so insulation system is simple, its cost generally raises with electric pressure and is linear increase.

2. little, in light weight, the conserve space of volume

The weight of the sensing head of photo-electric current transformer itself is less than 1kg.The MOCT of the 345KV that announces according to US Westinghouse company, it highly is 2.7m, weight is 109kg.And be 5.3m with the oil-immersed current transformer height of electric pressure, weight is 2300kg, this gives transportation and installs and brought very big convenience.

3. the trend that has adapted to digitizing, microcomputerization and the automation development of electric-power metering and protection

Along with the development of computing machine and digital technology, electric-power metering and relay protection realize microcomputerization and robotization day by day.The 5A of electromagnetic current transducer or 1A output specification must adopt light switch technology ability and computer interface, and the photo-electric current transformer itself is exactly the digitizer that utilizes photoelectric technology, can directly export to computing machine, avoids intermediate link.

Though photo-electric current transformer itself has above-mentioned advantage, the long playing stability of photo-electric current mutual inductor on site but is not easy to measure, especially to the stable test of photo-electric current mutual inductor on site operation year.

The utility model content

The purpose of this utility model is to provide a kind of proving installation of photo-electric current mutual inductor on site operation year stability.

A kind of proving installation of photo-electric current mutual inductor on site operation year stability comprises: at least one electromagnetic current transducer; At least one electromagnetic potential transformer; First electric energy meter is connected with described electromagnetic potential transformer with described electromagnetic current transducer; At least one optical current mutual inductor, described optical current mutual inductor equates with described electromagnetic current transducer quantity; The signal condition unit; Second electric energy meter is connected with described optical current mutual inductor, and is connected with described electromagnetic potential transformer by described signal condition unit.

The preferred a kind of technical scheme of the utility model, described first electric energy meter are the high precision electric energy meters with online qualification of on-the-spot operation.

The preferred a kind of technical scheme of the utility model, described second electric energy meter are the electronic type multifunctional digital electric energy meters with online qualification.

The preferred a kind of technical scheme of the utility model, described optical current mutual inductor is the adaptive optics current transformer.

Compared with prior art, the proving installation of photo-electric current mutual inductor on site operation year stability of the present utility model comprises by electromagnetic current transducer, first electric energy metered system that the electromagnetic potential transformer and first electric energy meter constitute, and by electromagnetic potential transformer, optical current mutual inductor, second electric energy metered system that the signal condition unit and second electric energy meter constitute, described first, the second electric energy metered system parallel running, if described first, the electric energy metrical deviation of second electric energy meter is in the relevant rules claimed range of country, and then the on-the-spot long-time running of optical current mutual inductor has stability, reliability.

Description of drawings

Fig. 1 is the structural representation of the proving installation of photo-electric current mutual inductor on site operation year stability of the present utility model.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing.

See also Fig. 1, Fig. 1 is the structural representation of the proving installation of photo-electric current mutual inductor on site operation year stability of the present utility model.The proving installation of described photo-electric current mutual inductor on site operation year stability comprises three electromagnetic current transducer (Currenttransformer, CT) 11, three electromagnetic potential transformers (Potential Transformer, PT) 13, three photo-electric current transformers 15, first electric energy meter 17, signal condition unit 18 and second electric energy metricals 19.Preferably, described photo-electric current transformer 15 is adaptive optics current transformer (POSS-OCT), described first electric energy meter 17 is high precision electric energy meters with online qualification of on-the-spot operation, and described second electric energy meter 19 is the electronic type multifunctional digital electric energy meters with online qualification.

Described first electric energy meter 17 is connected with described electromagnetic current transducer 11, described electromagnetic potential transformer 13.First electric energy metered system that described electromagnetic current transducer 11, electromagnetic potential transformer 13 and first electric energy meter 17 constitute.Be that described first electric energy metered system is to adopt existing three electromagnetic current transducers of transformer station, three electromagnetic potential transformers and be installed in on-the-spot traditional electric energy meter to form.

Described second electric energy meter 19 is connected with described optical current mutual inductor 15, and is connected with described electromagnetic potential transformer 13 by described signal condition unit 18.Described signal condition unit 18 is used for described electromagnetic potential transformer 13 signals are adjusted, thereby makes described electromagnetic potential transformer 13 and described second electric energy meter, 19 couplings.Described electromagnetic potential transformer 13, optical current mutual inductor 15, signal condition unit 18 and second electric energy meter 19 constitute second electric energy metered system.Be that described second electric energy metered system is formed by being installed in on-the-spot three electromagnetic potential transformers, three optical current mutual inductors, signal condition unit and high accuracy number electric energy meters.

Described first, the second electric energy metered system parallel running, described first electric energy metered system is used to measure and write down the annual service data of described electromagnetic current transducer 11, and described second electric energy metered system is used to measure and write down the annual service data of described optical current mutual inductor 15.The data that described first, second electric energy metered system is measured are analyzed, if the electric energy metrical deviation of described first, second electric energy metered system is in the relevant rules claimed range of country, the on-the-spot long-time running of then described optical current mutual inductor 15 has stability, reliability.

Compared with prior art, the proving installation of photo-electric current mutual inductor on site operation year stability of the present utility model comprises by electromagnetic current transducer 11, first electric energy metered system that the electromagnetic potential transformer 13 and first electric energy meter 17 constitute, and by electromagnetic potential transformer 13, optical current mutual inductor 15, second electric energy metered system that the signal condition unit 18 and second electric energy meter 19 constitute, described first, the second electric energy metered system parallel running, by to the on-the-spot linked network data analysis of power plant, if described first, the electric energy metrical deviation of second electric energy meter is in the relevant rules claimed range of country, and then the on-the-spot long-time running of optical current mutual inductor has stability, reliability.

The proving installation of photo-electric current mutual inductor on site of the present utility model operation year stability comprises three electromagnetic current transducers 11, three electromagnetic potential transformers 13 and three photo-electric current transformers 15, the quantity of described three kinds of mutual inductors can be other values also, and it is described to be not limited to above-mentioned embodiment.

Under the situation that does not depart from spirit and scope of the present utility model, can also constitute many very embodiment of big difference that have.Should be appreciated that except as defined by the appended claims, the utility model is not limited at the specific embodiment described in the instructions.

Claims (4)

1. the proving installation of a photo-electric current mutual inductor on site operation year stability is characterized in that, comprising:
At least one electromagnetic current transducer;
At least one electromagnetic potential transformer;
First electric energy meter is connected with described electromagnetic potential transformer with described electromagnetic current transducer;
At least one optical current mutual inductor, described optical current mutual inductor equates with described electromagnetic current transducer quantity;
The signal condition unit;
Second electric energy meter is connected with described optical current mutual inductor, and is connected with described electromagnetic potential transformer by described signal condition unit.
2. the proving installation of photo-electric current mutual inductor on site operation year stability as claimed in claim 1 is characterized in that, described first electric energy meter is the high precision electric energy meter with online qualification of on-the-spot operation.
3. the proving installation of photo-electric current mutual inductor on site operation year stability as claimed in claim 1 is characterized in that described second electric energy meter is the electronic type multifunctional digital electric energy meter with online qualification.
4. the proving installation of photo-electric current mutual inductor on site operation year stability as claimed in claim 1 is characterized in that described optical current mutual inductor is the adaptive optics current transformer.
CN2010205789641U 2010-10-27 2010-10-27 Testing device for field operation annual stability of photoelectric current transformer CN201867486U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205789641U CN201867486U (en) 2010-10-27 2010-10-27 Testing device for field operation annual stability of photoelectric current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205789641U CN201867486U (en) 2010-10-27 2010-10-27 Testing device for field operation annual stability of photoelectric current transformer

Publications (1)

Publication Number Publication Date
CN201867486U true CN201867486U (en) 2011-06-15

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CN2010205789641U CN201867486U (en) 2010-10-27 2010-10-27 Testing device for field operation annual stability of photoelectric current transformer

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CN (1) CN201867486U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944860A (en) * 2012-10-31 2013-02-27 江苏省电力公司电力科学研究院 Method and device for comparing running errors of optical current transformer and electromagnetic current transformer in real time

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102944860A (en) * 2012-10-31 2013-02-27 江苏省电力公司电力科学研究院 Method and device for comparing running errors of optical current transformer and electromagnetic current transformer in real time

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Granted publication date: 20110615