CN204065250U - A kind of generator amature overvoltage protection proving installation - Google Patents

A kind of generator amature overvoltage protection proving installation Download PDF

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Publication number
CN204065250U
CN204065250U CN201320809329.3U CN201320809329U CN204065250U CN 204065250 U CN204065250 U CN 204065250U CN 201320809329 U CN201320809329 U CN 201320809329U CN 204065250 U CN204065250 U CN 204065250U
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CN
China
Prior art keywords
voltage
overvoltage protection
generator amature
electric capacity
multiplying circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320809329.3U
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Chinese (zh)
Inventor
孟凡超
段晓波
郝晓光
李保平
唐建惠
王愿平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Hebei Electric Power Construction Adjustment Test Institute
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Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd, Hebei Electric Power Construction Adjustment Test Institute filed Critical State Grid Corp of China SGCC
Priority to CN201320809329.3U priority Critical patent/CN204065250U/en
Application granted granted Critical
Publication of CN204065250U publication Critical patent/CN204065250U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of generator amature overvoltage protection proving installation; It comprises DC high voltage generation device and voltage measuring apparatus two parts; Described DC high voltage generation device comprises pressure regulator T, electric capacity C1, C2, C3, C4, diode D1, D2, D3, D4; Described electric capacity C1, C2 and diode D1, D2 form the one 2 voltage-multiplying circuit, described electric capacity C3, C4 and diode D3, D4 form the 22 voltage-multiplying circuit, the output terminal of the one 2 voltage-multiplying circuit that the input end of the 22 voltage-multiplying circuit is connected to, its output terminal is connected to generator amature overvoltage protection both sides; Described voltage measuring apparatus comprises divider resistance R1, R2 and digital display panel type D.C. voltmeter, is parallel to tested generator amature overvoltage protection thyristor both sides after described divider resistance R1, R2 series connection.The utility model solves the shortcoming that conventional test methodologies has a big risk, precision is not high, greatly can improve accuracy and the authenticity of the detection of rotor over-voltage protection device.

Description

A kind of generator amature overvoltage protection proving installation
Technical field
Can the utility model belongs to survey control technology field, is specifically related to a kind of generator amature overvoltage protection proving installation, action message for testing generator amature forward, the operation voltage of inverse overvoltage and generator amature overvoltage protection.
Background technology
Along with the high speed development of China's power construction, the single-machine capacity of generator constantly increases, import original-pack and assembling excitation unit and subsidiary generator rotor de-excitation and overvoltage protection (jumper) possession ratio more and more higher.Rotor over-voltage protection device is as a kind of electric protective device; there are its aging characteristics and serviceable life; carrying out regular inspection to device is the prerequisite guaranteeing that device normally works; therefore the testing of generator amature overvoltage protection, the emphasis of Shi Ge electricity power group and the concern of generating unit always.
At present; generator amature overvoltage protection does not also have special test equipment; usually pressure regulator is used to carry out voltage-regulation during on-the-spot test; adopt step-up transformer to boost, carry out rectification by fairing, the method for waveform is tested to utilize oscillograph to check; the method uses instrument quantity more; field wiring is complicated, there is larger security risk, and its testing efficiency is low and measuring accuracy is not high.
Utility model content
This the object of utility modelbe have a big risk for generator amature overvoltage protection method of testing, shortcoming that precision is not high, adopt the principle of voltage doubling rectifing circuit, propose a kind of generator amature superpotential proving installation.
The utility model solves that its utility model object adopts technical scheme is:
A kind of generator amature overvoltage protection of the utility model proving installation comprises DC high voltage generation device and voltage measuring apparatus two parts, the voltage that DC high voltage generation device exports receives the two ends of generator amature overvoltage protection, and the input end of voltage measuring apparatus is connected on thyristor two ends in generator amature overvoltage protection; DC high voltage generation device is for generation of the continuously adjustable DC high voltage of 0-3000V, and for simulating generator amature superpotential, this voltage is applied to the two ends of generator amature overvoltage protection.Voltage measuring apparatus for testing the voltage at thyristor two ends in generator amature overvoltage protection, for judging thyristor whether conducting, i.e. generator super-voltage protection device whether action message.
Described DC high voltage generation device comprises pressure regulator T, electric capacity C1, C2, C3, C4, diode D1, D2, D3, D4, and described pressure regulator T adopts the electric current voltage controller power source of the adjustable overcurrent protection of ST-2000 type band, and capacity is 10KVA; Described electric capacity C1, C2 and diode D1, D2 form the one 2 voltage-multiplying circuit, its input end is connected to the output terminal of described pressure regulator T, described electric capacity C1, C2 parameter is identical, capacitance is 10 μ F, voltage is 1000V, and described di-cap D1, D2 parameter is identical, and model is IN1007, rated current is 1A, and withstand voltage is 1000V; Described electric capacity C3, C4 and diode D3, D4 form the 22 voltage-multiplying circuit, the input end of the 22 voltage-multiplying circuit is connected to the output terminal of the one 2 voltage-multiplying circuit, its output terminal is connected to generator amature overvoltage protection both sides, i.e. A, B terminal, and described electric capacity C3, C4 parameter is identical, capacitance is 10 μ F, voltage is 1000V, and described di-cap D3, D4 parameter is identical, and model is IN1007, rated current is 1A, and withstand voltage is 1000V;
Described voltage measuring apparatus comprises divider resistance R1, R2 and digital display panel type D.C. voltmeter.The resistance of described divider resistance R1 is 9.9K Ω; the resistance of R1 is 100 Ω; for the voltage of thyristor both sides being reduced to the voltage that digital display panel type D.C. voltmeter allows; tested generator amature overvoltage protection thyristor both sides are parallel to after described divider resistance R1, R2 series connection; DM4C-DV100V type digital display panel type D.C. voltmeter selected by described digital display panel type D.C. voltmeter; figure place showing is four and half, and range is 0-99.999.
Of the present utility model beneficial effectfor:
The shortcoming that the utility model has a big risk for generator amature overvoltage protection method of testing, precision is not high, proposes a kind of generator amature superpotential proving installation.This generator amature superpotential proving installation achieves the on-the-spot test to rotor over-voltage protection device; and to be dispatched from the factory report comparison by test data and producer; demonstrate the test validity of testing apparatus further; prove that this testing apparatus is applicable to field engineering test and uses; there is simple and practical, safe and reliable feature; greatly can improve accuracy and the authenticity of the detection of rotor over-voltage protection device; effectively can avoid the mistake action and rejecting action accident of generator amature overvoltage protection, ensure the safe and stable operation of electrical network further.
Accompanying drawing explanation
Fig. 1 is the map of current of a kind of generator amature overvoltage protection proving installation in the utility model.
Be generator amature overvoltage protection in Fig. 1 chain lines frame, dot-dash wire frame is outward generator amature overvoltage protection proving installation of the present utility model.Wherein, MK is eliminating magnetism of generator switch, and L is electric generator rotor coil, and V1, V2, V3 are the thyristor connecting de-excitation resistance after generator amature forward, inverse overvoltage, and R is non-linear resistance.
Embodiment
Embodiment:
Certain Power Co., Ltd. No. 2 machines, generator mark is QFSN-300-2, field regulator model is UNITROL5000 type digital excitation regulator, specified active-power P e=300MW, for rated reactive power Qe=186MVar, Generator Rotor Overvoltage Protection as shown in Fig. 1 dot-and-dash line, generator amature overvoltage protection proving installation described in the utility model embodiment, it comprises DC high voltage generation device and voltage measuring apparatus two parts; Described DC high voltage generation device comprises pressure regulator T, electric capacity C1, C2, C3, C4, diode D1, D2, D3, D4; Described electric capacity C1, C2 and diode D1, D2 form the one 2 voltage-multiplying circuit, its input end is connected to the output terminal of described pressure regulator T, described electric capacity C1, C2 parameter is identical, capacitance is 10 μ F, voltage is 1000V, and described di-cap D1, D2 parameter is identical, and model is IN1007, rated current is 1A, and withstand voltage is 1000V; Described electric capacity C3, C4 and diode D3, D4 form the 22 voltage-multiplying circuit, its input end be connected to the one 2 described voltage-multiplying circuit output terminal, its output terminal is connected to generator amature overvoltage protection both sides, i.e. A, B terminal, and described electric capacity C3, C4 parameter is identical, capacitance is 10 μ F, voltage is 1000V, and described di-cap D3, D4 parameter is identical, and model is IN1007, rated current is 1A, and withstand voltage is 1000V; Described voltage measuring apparatus comprises divider resistance R1, R2 and digital display panel type D.C. voltmeter.The resistance of described divider resistance R1 is 9.9K Ω; the resistance of R1 is 100 Ω; for the voltage of thyristor both sides being reduced to the voltage that digital display panel type D.C. voltmeter allows; tested generator amature overvoltage protection thyristor both sides are parallel to after described divider resistance R1, R2 series connection; DM4C-DV100V type digital display panel type D.C. voltmeter selected by described digital display panel type D.C. voltmeter; figure place showing is four and half, and range is 0-99.999.
Use the present embodiment product, the process of test generator amature overvoltage protection is as follows:
The first step: the connection disconnecting Generator Rotor Overvoltage Protection and generator amature, as 2 point of A, B in Fig. 1.
Second step: C2, C4 two ends of the utility model generator amature overvoltage protection proving installation and R1, R2 two ends are connected to respectively in A, B and A of generator amature overvoltage protection, C terminal.
3rd step: regulate pressure regulator T, progressively raises the output voltage of generator amature overvoltage protection proving installation, until the voltage of digital display panel type D.C. voltmeter display declines suddenly, stops boosting.Magnitude of voltage before voltage drop is exactly the working value of generator amature overvoltage protection proving installation, and in this embodiment, this working value is 2812V.
4th step: by measured value and delivery test value or last time trial value contrast, if voltage deviation rate is less than 5%, illustrate that generator amature overvoltage protection is functional.This generator amature overvoltage protection delivery test value is 2801V, and its voltage deviation rate is:
Conclusion: the working value through the generator amature overvoltage protection of actual measurement this TV station unit is 2812V, and compared with delivery test value, voltage deviation rate is 0.39%, is less than 5%, and generator amature overvoltage protection is qualified.

Claims (1)

1. a generator amature overvoltage protection proving installation, it is characterized in that: described generator amature overvoltage protection proving installation comprises DC high voltage generation device and voltage measuring apparatus two parts, the voltage that DC high voltage generation device exports receives the two ends of generator amature overvoltage protection, and the input end of voltage measuring apparatus is connected on thyristor two ends in generator amature overvoltage protection;
Described DC high voltage generation device comprises pressure regulator T, four electric capacity C1, C2, C3, C4, four diodes D1, D2, D3, D4; Electric capacity C1, C2 and diode D1, D2 form the one 2 voltage-multiplying circuit, and the input end of the one 2 voltage-multiplying circuit is connected to the output terminal of pressure regulator T, and described electric capacity C1, C2 parameter is identical, and diode D1, D2 parameter is identical; Electric capacity C3, C4 and diode D3, D4 form the 22 voltage-multiplying circuit, the input end of the 22 voltage-multiplying circuit is connected to the output terminal of the one 2 voltage-multiplying circuit, its output terminal is connected to generator amature overvoltage protection both sides, and described electric capacity C3, C4 parameter is identical, and diode D3, D4 parameter is identical;
Described voltage measuring apparatus comprises divider resistance R1, R2 and digital display panel type D.C. voltmeter; The voltage that described divider resistance R1 allows for the voltage of thyristor both sides being reduced to digital display panel type D.C. voltmeter, is parallel to tested generator amature overvoltage protection thyristor both sides after described divider resistance R1, R2 series connection.
CN201320809329.3U 2013-12-11 2013-12-11 A kind of generator amature overvoltage protection proving installation Expired - Fee Related CN204065250U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320809329.3U CN204065250U (en) 2013-12-11 2013-12-11 A kind of generator amature overvoltage protection proving installation

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Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
CN204065250U true CN204065250U (en) 2014-12-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108318813A (en) * 2018-04-16 2018-07-24 国家电网公司 A kind of direct current calibration equipment suitable for rotor over-voltage protection device
CN110726920A (en) * 2019-10-25 2020-01-24 广东电网有限责任公司 Detection method, device, equipment and storage medium for thyristor jumper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108318813A (en) * 2018-04-16 2018-07-24 国家电网公司 A kind of direct current calibration equipment suitable for rotor over-voltage protection device
CN110726920A (en) * 2019-10-25 2020-01-24 广东电网有限责任公司 Detection method, device, equipment and storage medium for thyristor jumper

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C14 Grant of patent or utility model
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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: 20141231

Termination date: 20161211