CN108318813A - A kind of direct current calibration equipment suitable for rotor over-voltage protection device - Google Patents

A kind of direct current calibration equipment suitable for rotor over-voltage protection device Download PDF

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Publication number
CN108318813A
CN108318813A CN201810338350.7A CN201810338350A CN108318813A CN 108318813 A CN108318813 A CN 108318813A CN 201810338350 A CN201810338350 A CN 201810338350A CN 108318813 A CN108318813 A CN 108318813A
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CN
China
Prior art keywords
direct current
voltage
calibration equipment
pressurizer
rotor over
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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.)
Granted
Application number
CN201810338350.7A
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Chinese (zh)
Other versions
CN108318813B (en
Inventor
侯桂欣
王卓菲
李珅
付朝霞
杨璐
邵卫超
张利
谷峥
王军
王晓军
扆博
和海顺
郝临景
赵洪峰
杨占良
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 Xinyuan Holdings Co Ltd Beijing Ming Tombs Energy Storage Power Plant
State Grid Corp of China SGCC
State Grid Xinyuan Co Ltd
Original Assignee
State Grid Xinyuan Holdings Co Ltd Beijing Ming Tombs Energy Storage Power Plant
State Grid Corp of China SGCC
State Grid Xinyuan Co Ltd
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Publication date
Application filed by State Grid Xinyuan Holdings Co Ltd Beijing Ming Tombs Energy Storage Power Plant, State Grid Corp of China SGCC, State Grid Xinyuan Co Ltd filed Critical State Grid Xinyuan Holdings Co Ltd Beijing Ming Tombs Energy Storage Power Plant
Priority to CN201810338350.7A priority Critical patent/CN108318813B/en
Publication of CN108318813A publication Critical patent/CN108318813A/en
Application granted granted Critical
Publication of CN108318813B publication Critical patent/CN108318813B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272Apparatus, systems or circuits therefor

Abstract

The present invention provides a kind of direct current calibration equipment suitable for rotor over-voltage protection device, is related to electric field equipment technical field.The direct current calibration equipment includes pressurizer, step-up transformer, thyristor bridge and voltmeter, wherein the pressurizer, for providing alternating current for the step-up transformer;The step-up transformer, for boosting to the alternating current, to increase the voltage of ac circuit;The thyristor bridge is connected with the step-up transformer, for the on high-tension side alternating current of the step-up transformer to be reverse into direct current;The voltmeter is connected with the thyristor bridge and rotor over-voltage protection device, the voltage for monitoring the thyristor bridge.The present invention passes through pressurizer, the step-up transformer in high-tension testing apparatus; high pressure resistant thyristor is amplified outside; direct current verification circuit has been built, the operation voltage and return voltage of rotor over-voltage protection device has been verified, realizes the verification of rotor over-voltage protection device.

Description

A kind of direct current calibration equipment suitable for rotor over-voltage protection device
Technical field
The present invention is concretely a kind of straight suitable for rotor over-voltage protection device about electric field equipment technical field Flow calibration equipment.
Background technology
Background that this section is intended to provide an explanation of the embodiments of the present invention set forth in the claims or context.Herein Description recognizes it is the prior art not because not being included in this part.
In generator excited system, rotor over-voltage protection device is mounted in generator amature both ends, and effect is to turn When overvoltage occurs for son, overvoltage is eliminated through de-excitation resistance, is a kind of routine of generator amature by protective device action Rare primary side direct current protecting device in protection and generator protection.
In the power plant of the prior art, the experiment of primary equipment generally exchanges, and test apparatus is also based on exchange, special needle Less to the direct current calibration equipment of primary equipment, use is also few, therefore finds a kind of economic and practical calibration equipment and compel The eyebrows and eyelashes.
Invention content
In view of this, the present invention provides a kind of direct current calibration equipment suitable for rotor over-voltage protection device, pass through Pressurizer, step-up transformer in high-tension testing apparatus, amplify high pressure resistant thyristor outside, have built direct current and have verified back Road verifies the operation voltage and return voltage of rotor over-voltage protection device, realizes the verification of rotor over-voltage protection device.
To achieve the goals above, the present invention provides a kind of direct current verifications suitable for rotor over-voltage protection device to set It is standby, including pressurizer, step-up transformer, thyristor bridge and voltmeter,
Wherein, the pressurizer, for providing alternating current for the step-up transformer;
The step-up transformer is connected with the pressurizer, for boosting to the alternating current, to increase exchange The voltage in circuit;
The thyristor bridge is connected with the step-up transformer, is used for the on high-tension side friendship of the step-up transformer Galvanic electricity is reverse into direct current;
The voltmeter is connected with the thyristor bridge and rotor over-voltage protection device, for monitor it is described can Control the voltage of silicon bridge.
In a preferred embodiment of the invention, the direct current calibration equipment further includes:
Pressurizer control loop is connected with the pressurizer, for there is exception when DC loop and/or ac circuit When, the pressurizer is disconnected.
In a preferred embodiment of the invention, the direct current calibration equipment further includes:
The overcurrent protection step switch being connected respectively with the pressurizer and step-up transformer exchanges back for working as When road occurs abnormal, ac circuit is cut off.
In a preferred embodiment of the invention, the direct current calibration equipment further includes:
Direct current miniature circuit breakers are connected with the thyristor bridge, for when DC loop occurs abnormal, cut-out direct current to return Road.
In a preferred embodiment of the invention, the pressurizer control loop includes contactor and control loop structure At the control loop concatenates the auxiliary contact of the overcurrent protection step switch and direct current miniature circuit breakers.
In a preferred embodiment of the invention, the voltmeter includes D.C. voltmeter and A.C. voltmeter, wherein The D.C. voltmeter is set to the DC side of the thyristor bridge;
The A.C. voltmeter is mounted on the exchange side of the thyristor bridge.
In a preferred embodiment of the invention, the thyristor bridge includes the three phase bridge circuit of silicon-controlled composition.
In a preferred embodiment of the invention, the thyristor bridge includes the three phase bridge circuit of silicon-controlled composition and straight Flow the smoothing reactor of outlet side.
The beneficial effects of the present invention are provide a kind of direct current verification suitable for rotor over-voltage protection device and set It is standby, by pressurizer, the step-up transformer in high-tension testing apparatus, high pressure resistant thyristor is amplified outside, has been built straight Stream verification circuit, verifies the operation voltage and return voltage of rotor over-voltage protection device, realizes rotor over-voltage protection dress The verification set.
For the above and other objects, features and advantages of the present invention can be clearer and more comprehensible, preferred embodiment cited below particularly, And coordinate institute's accompanying drawings, it is described in detail below.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of reality of direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Apply the structural schematic diagram of mode one;
Fig. 2 is a kind of reality of direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Apply the structural schematic diagram of mode two;
Fig. 3 is a kind of showing for direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Field lab diagram;
Fig. 4 is a kind of electricity of direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Gas schematic diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In the power plant of the prior art, the rotor over-voltage protection device of generator excited system is mounted in generator amature Both ends, when effect is that overvoltage occurs for rotor, protective device action eliminates overvoltage through de-excitation resistance, is power generation Rare primary side direct current protecting device in a kind of GPF (General Protection False and generator protection of machine rotor.The experiment of primary equipment It generally exchanges, test apparatus is less specifically for the direct current calibration equipment of primary equipment also based on exchange, and use is not yet It is more, therefore it is extremely urgent to find a kind of economic and practical calibration equipment.
The present invention provides a kind of direct current calibration equipment suitable for rotor over-voltage protection device, realizes overvoltage The verification of protective device.
It is verified specifically, Fig. 1 is a kind of direct current suitable for rotor over-voltage protection device provided in an embodiment of the present invention The structural schematic diagram of the embodiment one of equipment, referring to Fig. 1, provided by the invention suitable for rotor over-voltage protection device Direct current calibration equipment include pressurizer 100, step-up transformer 200, thyristor bridge 300 and voltmeter 400,
Wherein, the pressurizer 100, for providing alternating current for the step-up transformer;
In one embodiment of the invention, the pressurizer 100 is the power unit of entire direct current calibration equipment, is The low-pressure side of step-up transformer 200 is powered.
The pressurizer in conventional high-pressure experiment can be used in the pressurizer 100, and output voltage range can be according to verified Rotor over-voltage protection device operation voltage depending on.
The step-up transformer 200 is connected with the pressurizer, for boosting to the alternating current, to increase The voltage of ac circuit.
The step-up transformer 200 is need to be used cooperatively with pressurizer 100, and no-load voltage ratio and capacity must all consider choosing With.
The step-up transformer 200 is the device that ac circuit increases voltage, increases the voltage of ac circuit, straight to meet It flows side jumper and examines required DC voltage.
In direct current calibration equipment shown in Fig. 1, pressurizer 100, step-up transformer 200 constitute ac circuit.
The thyristor bridge 300 is connected with the step-up transformer, is used for the on high-tension side of the step-up transformer Alternating current is reverse into direct current.
In one embodiment of the invention, the thyristor bridge 300 includes the three phase bridge circuit of silicon-controlled composition.
In another embodiment of the invention, the thyristor bridge 300 includes the three phase bridge circuit of silicon-controlled composition And the smoothing reactor of DC output side.Smoothing reactor is used for stable DC output voltage, improves the reliable of calibration equipment Property.
The thyristor bridge direct current is the core component of calibration equipment, for the on high-tension side alternating current of step-up transformer is inverse Become DC voltage, to improve the quality of DC voltage, increases smoothing reactor, which should be according to DC side load It is adjusted.
The voltmeter 400 is connected with the thyristor bridge and rotor over-voltage protection device, described for monitoring The voltage of thyristor bridge.
In a kind of embodiment of the application, voltmeter 400 includes D.C. voltmeter 402 and A.C. voltmeter 401, For monitoring that both sides voltage, D.C. voltmeter 401 should select the higher meter of accuracy, when ensureing device verification, as far as possible Reduce error.
Wherein, the D.C. voltmeter 402 is set to the DC side of the thyristor bridge;
The A.C. voltmeter 401 is mounted on the exchange side of the thyristor bridge.
In direct current calibration equipment shown in Fig. 1, thyristor bridge 300, voltmeter 400 constitute DC loop.
As above it is a kind of direct current calibration equipment suitable for rotor over-voltage protection device provided by the invention, pressurizer It is connected to AC power, provides alternating voltage for entire direct current calibration equipment, output voltage can be carried out by rotating adjusting pressuring handle Adjustment.The voltage adjusting range of pressurizer output is limited, the step-up transformer for being suitble to capacity can be selected, to meet different rotor The verification demand of overvolatge device.Alternating voltage passes through by the silicon-controlled rectifier bridge constituted, and alternating voltage is converted into direct current Pressure, A.C. voltmeter are used to monitor the voltage of ac circuit, can be used as the nargin for judging step-up transformer output voltage.Direct current Pressure table both can be used for monitoring DC loop voltage, can also record DC voltage value when overvoltage device action, carry For the test result of bulk testing.It can also tentatively judge thyristor bridge by the relationship between alternating voltage and DC voltage It is whether working properly.
Fig. 2 is a kind of reality of direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention The structural schematic diagram of mode two is applied, referring to Fig. 2, in embodiment two, further includes:
Pressurizer control loop 500 is connected with the pressurizer 100, goes out for working as DC loop and/or ac circuit When now abnormal, the pressurizer is disconnected.
In a particular embodiment, any abnormal phenomenon, the pressurizer control occur for DC loop or ac circuit Circuit can disconnect pressurizer, protect the components from damage.
The overcurrent protection step switch 600 being connected respectively with the pressurizer and step-up transformer, for when friendship When flowing back to road appearance exception, ac circuit is cut off.The overcurrent protection step switch is that a kind of overcurrent can snap action Alternating-current switch can connect three-phase circuit, be the protection switch of ac circuit, different for ac circuit overload or short circuit, ground connection etc. Cut-off loop when often.
Direct current miniature circuit breakers 700 are connected with the thyristor bridge, for when DC loop occurs abnormal, cut-out to be straight Flow back to road.The direct current miniature circuit breakers 700 be it is a kind of can snap action dc switch, be DC loop protection switch, use The cut-off loop when abnormal phenomenon such as DC loop overload or ground connection, short circuit.
In one embodiment of the invention, the pressurizer control loop includes contactor and control loop structure At the control loop concatenates the auxiliary contact of the overcurrent protection step switch and direct current miniature circuit breakers.
Fig. 3 is a kind of showing for direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Field lab diagram provides alternating voltage as shown in figure 3, pressurizer is connected to AC power through contactor for entire calibration equipment, defeated Going out voltage can be adjusted by rotating adjusting pressuring handle.The voltage adjusting range of pressurizer output is limited, can select to be suitble to appearance The step-up transformer of amount, to meet the verification demand of different rotor overvolatge device.Alternating voltage passes through to be made of silicon-controlled Alternating voltage is converted into DC voltage by rectifier bridge, the smoothing reactor which is constituted through Resistor-Capacitor Unit, reduces direct current The low-order harmonic content of voltage.A.C. voltmeter is used to monitor the voltage of ac circuit, can be used as and judges that step-up transformer exports The nargin of voltage.D.C. voltmeter both can be used for monitoring DC loop voltage, can also record overvoltage device 01 and move DC voltage value when making provides the test result of bulk testing.The pass between alternating voltage and DC voltage can also be passed through System, tentatively judges whether thyristor bridge is working properly.
Under normal circumstances, overcurrent protection step switch and direct current miniature circuit breakers will not act, and can adjust and add in experiment The output voltage of depressor, and the show value of D.C. voltmeter is observed, until rotor over-voltage protection device action.At this point, direct current DC voltage value shown by voltmeter becomes the operation voltage of rotor over-voltage protection device.
Fig. 4 is a kind of electricity of direct current calibration equipment suitable for rotor over-voltage protection device provided in an embodiment of the present invention Gas schematic diagram, when occurring the exception such as overload or short circuit as shown in Figure 4, in test loop, overcurrent protection step switch or straight Miniature circuit breakers overcurrent, switch trip are flowed, auxiliary node action connects at this point, the normally closed node (K2-2 or K3-2) of switch is closed The switching winding excitation of tentaculum K1.While disengagement failure side loop, contactor is separated, cuts off the power supply of whole device, protection All elements are without damage.
In conclusion the present invention provides a kind of direct current calibration equipment suitable for rotor over-voltage protection device, realize The verification of rotor over-voltage protection device makes it meet:1. DC voltage output can be changed, and monitoring direct current is defeated in real time Go out voltage;2. experiment need to be automatically stopped if any overcurrent in circuit;3. it is economical and practical, it is easy installation and reliable.
The beneficial effects of the invention are as follows the direct current calibration equipments for rotor over-voltage protection device, have accurate measure Meter ensures the accuracy of DC voltage;With reliable fault actions element, prevent from damaging element when the exception of circuit.
It is improvement on hardware (for example, to diode, crystal that the improvement of one technology, which can be distinguished clearly, Pipe, switch etc. circuit structures improvement) or software on improvement (improvement for method flow).However, with technology The improvement of development, current many method flows can be considered as directly improving for hardware circuit.Designer is almost All corresponding hardware circuit is obtained by the way that modified flow to be programmed into hardware circuit.Therefore, it cannot be said that a method The improvement of flow cannot be realized with hardware entities module.For example, programmable logic device (Programmable Logic Device, PLD) in this way (such as field programmable gate array (Field Programmable Gate Array, FPGA)) be exactly A kind of integrated circuit, logic function determine device programming by user.It is voluntarily programmed come a number by designer " integrated " designs without asking chip maker and makes dedicated IC chip on a piece of PLD.Moreover, Nowadays, substitution manually makes IC chip, and " logic compiler (logic is also used in this programming instead mostly Compiler) " software realizes that when it writes with program development software compiler used is similar, and before compiling Also handy specific programming language is write for source code, this is referred to as hardware description language (Hardware Description Language, HDL), and HDL is also not only a kind of, but there are many kinds, such as ABEL (Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、 CUPL(Cornell University Programming Language)、HDCal、JHDL(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language) etc., VHDL (Very-High-Speed Integrated Circuit are most generally used at present Hardware Description Language) and Verilog2.Those skilled in the art also will be apparent to the skilled artisan that only needs will be square Method flow slightly programming in logic and is programmed into integrated circuit with above-mentioned several hardware description languages, so that it may to be readily available reality The now hardware circuit of the logical method flow.
Above-described embodiment illustrates, device, module or unit can specifically realize by computer chip or entity, or It is realized by the product with certain function.
For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this The function of each unit is realized can in the same or multiple software and or hardware when application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can It is realized by the mode of software plus required general hardware platform.Based on this understanding, the technical solution essence of the application On in other words the part that contributes to existing technology can be expressed in the form of software products, the computer software product It can be stored in a storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used so that a computer (can To be personal computer, server either network etc.) execute certain part institutes of each embodiment of the application or embodiment It states.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for embodiment For, since it is substantially similar to the method embodiment, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation It defends oneself bright.
The application can be used in numerous general or special purpose computer environments or configuration.Such as:Personal computer, server Computer, hand-held or portable, plate, multiprocessor, based on microprocessor, set top box, programmable consumer electronics, net Network PC, minicomputer, mainframe computer including any of the above or distributed computing environment etc..
The application can describe in the general context of computer-executable instructions executed by a computer, such as program Module.Usually, program module includes routines performing specific tasks or implementing specific abstract data types, program, object, group Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these distributed computing environments, by Task is executed by the connected remote processing of communication network.In a distributed computing environment, program module can be located at Including being stored in interior local and remote computer storage media.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application there are many deformation and Variation does not depart from spirit herein, it is desirable to which the attached claims include the essence of these deformations and variation without departing from the application God.

Claims (8)

1. a kind of direct current calibration equipment suitable for rotor over-voltage protection device, characterized in that the direct current calibration equipment packet Pressurizer, step-up transformer, thyristor bridge and voltmeter are included,
Wherein, the pressurizer, for providing alternating current for the step-up transformer;
The step-up transformer is connected with the pressurizer, for boosting to the alternating current, to increase ac circuit Voltage;
The thyristor bridge is connected with the step-up transformer, is used for the on high-tension side alternating current of the step-up transformer It is reverse into direct current;
The voltmeter is connected with the thyristor bridge and rotor over-voltage protection device, described silicon-controlled for monitoring The voltage of bridge.
2. the direct current calibration equipment according to claim 1 suitable for rotor over-voltage protection device, characterized in that described Direct current calibration equipment further includes:
Pressurizer control loop is connected with the pressurizer, is used for when DC loop and/or abnormal ac circuit appearance, The pressurizer is disconnected.
3. the direct current calibration equipment according to claim 2 suitable for rotor over-voltage protection device, characterized in that described Direct current calibration equipment further includes:
The overcurrent protection step switch being connected respectively with the pressurizer and step-up transformer, goes out for working as ac circuit When now abnormal, ac circuit is cut off.
4. the direct current calibration equipment according to claim 3 suitable for rotor over-voltage protection device, characterized in that described Direct current calibration equipment further includes:
Direct current miniature circuit breakers are connected with the thyristor bridge, for when DC loop occurs abnormal, cutting off DC loop.
5. the direct current calibration equipment according to claim 4 suitable for rotor over-voltage protection device, characterized in that described Pressurizer control loop includes that contactor and control loop are constituted, and the control loop concatenates the overcurrent protection action and opens The auxiliary contact of pass and direct current miniature circuit breakers.
6. the direct current calibration equipment according to claim 4 suitable for rotor over-voltage protection device, characterized in that described Voltmeter includes D.C. voltmeter and A.C. voltmeter,
Wherein, the D.C. voltmeter is set to the DC side of the thyristor bridge;
The A.C. voltmeter is mounted on the exchange side of the thyristor bridge.
7. the direct current calibration equipment according to claim 6 suitable for rotor over-voltage protection device, characterized in that described Thyristor bridge includes the three phase bridge circuit of silicon-controlled composition.
8. the direct current calibration equipment according to claim 6 suitable for rotor over-voltage protection device, characterized in that described Thyristor bridge includes the three phase bridge circuit of silicon-controlled composition and the smoothing reactor of DC output side.
CN201810338350.7A 2018-04-16 2018-04-16 Direct current calibration equipment suitable for rotor overvoltage protection device Active CN108318813B (en)

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