CN110488191A - Nuclear power plant's emergency diesel dynamo off-line testing system - Google Patents
Nuclear power plant's emergency diesel dynamo off-line testing system Download PDFInfo
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- CN110488191A CN110488191A CN201910862555.XA CN201910862555A CN110488191A CN 110488191 A CN110488191 A CN 110488191A CN 201910862555 A CN201910862555 A CN 201910862555A CN 110488191 A CN110488191 A CN 110488191A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- Control Of Eletrric Generators (AREA)
Abstract
The present invention relates to nuclear power plant's emergency power supply technical fields, disclose a kind of nuclear power plant's emergency diesel dynamo off-line testing system, nuclear power plant's emergency diesel dynamo off-line testing system includes physical test component and field regulator interface module.The physical test component simulates field regulator actual motion environment for simulating generator input-output system；Field regulator interface module is connected with the physical test component, is used for simulation excitation system actual motion environment, accesses field regulator, and carry out function test inspection to field regulator.
Description
Technical field
The present invention relates to nuclear power plant's emergency power supply technical field, more particularly to a kind of nuclear power plant's emergency diesel dynamo from
Thread test system.
Background technique
Nuclear power plant's emergency diesel dynamo is the important equipment of nuclear power plant, executes the function of guaranteeing nuclear safety.Generator is encouraged
Magnetic system is the important component of generator, is had a great impact to the safe operation of electric system and generator itself.Hair
The main operational process of motor excitation system is that three-phase AC power power supply is rectified by power rectification bridge, gives generator excitation winding
Direct current is provided, generator excitation winding is with the generator circumgyration incision magnetic line of force, to make generator creating AC current.
Automatic excitation adjustor of generator is the core of excitation unit, the work for playing control voltage, improving stability of power system
With.After nuclear power plant puts into operation, if having carried out maintenance, transformation to automatic excitation adjustor of generator, need to have manufactured in equipment
Cheng Hou makees function test inspection to it, to guarantee the feasibility of equipment after replacing.But due to being analog adjustment of field excitation
Device needs to set up related running environment so functional characteristic can not be simulated by Digital Simulation.Simultaneously as factory
The related running environment of the not no field regulator of family, so can not its field regulation characteristics be done with function test inspection.
Summary of the invention
Based on this, it is necessary to there is no the related running environment of field regulator for manufacturer and can not be to adjustment of field excitation
Characteristic makees the problem of functional trial inspection, builds nuclear power plant's emergency of a simulation field regulator normal operation environment
Diesel-driven generator off-line testing system.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of nuclear power plant's emergency diesel dynamo off-line testing system, including physical test component and field regulator interface
Component.The physical test component simulates field regulator actual motion environment for simulating generator input-output system；
Field regulator interface module is connected with the physical test component, simulation excitation system actual motion environment is used for, to connect
Enter field regulator, and function test inspection is carried out to field regulator.
The physical test component includes: in one of the embodiments,
Generating set generates electric power output for closed load circuit；
Drive shaft is connected with the generating set, is used for driven generator；
Frequency converter is connected with the drive shaft, for realizing power generation by the conversion to drive shaft frequency of supply
The automatic adjustment of unit exploitation speed；
Transformer is connected with the generating set, the output voltage for the generating set to be raised and lowered make its with
The voltage of power transmission electric network is identical；
Transmission line of electricity is used for transmission the voltage and transmission electric power of generating set generation；
Tunable load is connected with the transmission line of electricity, the different loads situation for simulation generator set；
Switching group is connected in transmission line of electricity, as cut-off point controllable between generating set and tunable load.
The field regulator interface module includes: in one of the embodiments,
Electrical source of power module, for being powered to excitation system；Control module, for being controlled to field regulator
System is adjusted and is shown；Protective module, for being protected to generating set and excitation system.
The electrical source of power module includes: in one of the embodiments,
Exciting transformer, the three-phase AC power power supply for exporting generating set are converted to three needed for excitation system
Phase AC power source；Rectification unit is used for supply generator excitation winding after three-phase AC power power rectifier；Excitation list
Member is connected with generator excitation winding, for providing initial excitation voltage to generator excitation winding.
The rectification unit includes: in one of the embodiments,
Power rectifier is connected with the voltage output end of the exciting transformer and field regulator, for encouraging described
After the three-phase AC power power supply that magnetic transformer provides and the three-phase AC power power rectifier that was adjusted through field regulator to
Generator excitation winding power；Continued flow resistance, it is in parallel with power rectifier.
The excitation unit includes: in one of the embodiments,
Switching group is connected with excitation unit Input voltage terminal, for as controllable between voltage input end and excitation system
Cut-off point；Current-limiting resistance is connected with switching group, for limiting the size of excitation unit excitation electric current；Steering diode, with limit
Leakage resistance series connection, for realizing the reverse blocking of excitation unit.
The control module includes: in one of the embodiments,
Field regulator sampling unit for sampling the alternating voltage and/or electric current of generating set output, and is supplied to and encourages
Magnestat；Monitoring unit is connected in the circuit where generator excitation winding, for monitoring exciting current.
The field regulator sampling unit includes: in one of the embodiments,
Field regulator sampling plate, for connecting field regulator, to the generator alternating current voltage of input field regulator
And/or electric current is sampled；Current transformer is connected with field regulator sampling plate, the electric current for exporting generating set
Detection electric current is converted to by setting ratio；Voltage transformer is connected with field regulator sampling plate, for exporting generating set
Voltage be converted to detection voltage by setting ratio.
The monitoring unit includes: in one of the embodiments,
Hall element is connected with generator excitation winding, for detecting electric current and its variation, controls for excitation system；
Current divider is connected with excitation winding bus, the exciting current for measuring and in show circuit.
The protective module includes: in one of the embodiments,
Demagnetization unit is connected with generator excitation winding, for reducing generator excitation when generating set is out of service
Magnetic field energy in winding；Exciting transformer protection location, is connected with exciting transformer, for working as exciting transformer operation irregularity
When issue alarm signal.
The demagnetization unit includes: in one of the embodiments,
De-excitation resistance, one end are connected with degaussing switch auxiliary contact, and the other end is connected with generator excitation winding one end, use
In consumption magnetic field energy；Degaussing switch is connected with rectification unit, can between generator excitation winding and field power supply for being used as
The cut-off point of control；Degaussing switch auxiliary contact are connected with the generator excitation winding other end, and when degaussing switch disconnects, demagnetization is opened
Auxiliary contact closure is closed, de-excitation resistance and generator excitation winding is formed into a loop, consumes magnetic field energy.
The exciting transformer protection location includes: in one of the embodiments,
Current transformer is connected with exciting transformer voltage input end, and the electric current for exporting generating set is by setting
Ratio is converted to detection electric current；Exciting transformer protects circuit, is connected with current transformer, for detecting in three-phase power supply system
Parameter, the signal an alert when exciting transformer misoperation.
Nuclear power plant's emergency diesel dynamo off-line testing system provided by the invention, including physical test component and Excitation Adjustment
Save device interface module.The physical test component, for simulating generator input-output system；Field regulator interface module,
It is connected with the physical test component, is used for simulation excitation system actual motion environment.By physical test component and adjustment of field excitation
The field regulator that device interface module detects needed for accessing after connecting, can make function test inspection to it.
Detailed description of the invention
Fig. 1 is that nuclear power plant's emergency diesel dynamo off-line testing system of the embodiment of the present invention constitutes block diagram；
Fig. 2 is the physical test component connection schematic diagram of the embodiment of the present invention；
Fig. 3 is that the field regulator interface module of the embodiment of the present invention constitutes block diagram；
Fig. 4 is each module connection diagram in the field regulator interface module of the embodiment of the present invention；
Fig. 5 is the element connection schematic diagram of each module in the field regulator interface module of the embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give the preferred embodiment of the present invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.Opposite, the purpose of providing these embodiments is that in order to understand the disclosure
It is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", "upper", "lower", "front", "rear", " circumferential direction " and similar statement are to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Nuclear power plant's emergency diesel dynamo off-line testing system of the embodiment of the present invention is by erecting field regulator
Working environment simulates the actual operation state of field regulator, to carry out functionally to by improved field regulator
Test inspection.
The embodiment of the present invention simulates the real work operation ring of a diesel-driven generator using self-shunt excitation system
Border, the operation logic of self-shunt excitation system are that the excitation for utilizing a part of generator self generating power to supply itself needs
It wants.
Referring to Figure 1, the embodiment of the invention provides a kind of nuclear power plant's emergency diesel dynamo off-line testing system 10, institutes
Stating nuclear power plant's emergency diesel dynamo off-line testing system includes physical test component 100 and field regulator interface module 200.
The physical test component 100 is used for mould for simulating generator input-output system, the field regulator interface module 200
Quasi- excitation system running environment, and for connecting field regulator.The physical test component 100 and the field regulator connect
Mouth component 200 accesses field regulator after connecting, and can carry out function test inspection to field regulator.
Fig. 2 is referred to, the physical test component 100 includes: generating set 110, driving in one of the embodiments,
Shaft 120, frequency converter 130, transformer 140, switching group 150, transmission line of electricity 160, tunable load 170.The drive shaft 120
It is connected with frequency converter 130, the frequency converter realizes that generating set 110 is transported by the conversion to 120 frequency of supply of drive shaft
The automatic adjustment of rotational speed rate.The drive shaft 120 is also connected with generating set 110, works for driven generator.The hair
The output end of motor group 110 is connected with the input terminal of the transformer 140, and the generating set 110 is driven by drive shaft 120
Rotation exports induced electromotive force using electromagnetic induction principle, and closed load circuit generates electric power output.The transformer
140 output end is connected with a switch in the switching group 150, and the transformer 140 is for being raised and lowered the hair
The output voltage of motor group 110 keeps it identical as the voltage of power transmission electric network.Each switch in the switching group 150 is connected to
In the output end of the transformer 140, transmission line of electricity 160 and the input terminal of tunable load 170, for as generating set and can
Cut-off point controllable between load is adjusted, the accident range of generator is reduced, convenient for operation and debugging.The transmission line of electricity 160 with
Tunable load 170 is connected, and is used for transmission the voltage of generating set generation.The tunable load 170 is for simulation generator set
Different loads situation.It should be noted that only illustrating a kind of embodiment of physical test component 100 in the present embodiment, no
Exclusion has other embodiments.
Fig. 3 is referred to, the field regulator interface module 200 includes electrical source of power mould in one of the embodiments,
Block 2100, control module 2200 and protective module 2300.The electrical source of power module 2100 is used to be powered excitation system,
For being controlled field regulator, being adjusted and being shown, the protective module 2300 is used for hair the control module 2200
Motor group and excitation system are protected.It should be noted that only illustrating a kind of field regulator interface group in the present embodiment
The embodiment of part 200, however not excluded that have other embodiments.
Fig. 4 is referred to, the electrical source of power module 2100 includes excitation unit 2110, encourages in one of the embodiments,
Magnetic transformer 2120 and rectification unit 2130.The excitation unit 2110 is for providing initial excitation to generator excitation winding
Voltage, the exciting transformer 2120 is for being converted to the three-phase AC power power supply that generating set exports needed for excitation system
Three-phase AC power power supply, the rectification unit 2130 is used for supply generator excitation after three-phase AC power power rectifier
Winding.It should be noted that only illustrating a kind of embodiment of electrical source of power module 2100 in the present embodiment, however not excluded that have
Other embodiments.
The control module 2200 includes that field regulator sampling unit 2210 and monitoring are single in one of the embodiments,
Member 2220.The field regulator sampling unit 2210 for connecting field regulator, voltage to input field regulator and/
Or electric current is sampled, and is supplied to field regulator；The monitoring unit 2220 is connected on where generator excitation winding
In circuit, for monitoring exciting current.It should be noted that only illustrating a kind of reality of control module 2200 in the present embodiment
Apply mode, however not excluded that there are other embodiments.
The protective module 2300 includes that demagnetization unit 2310 and exciting transformer protection are single in one of the embodiments,
Member 2320.The demagnetization unit 2310 is connected with generator excitation winding, for quickly reducing when generating set is out of service
Magnetic field energy in generator excitation winding, so that the induced electromotive force for reducing generator rear remaining out of service causes equipment
Damage；The exciting transformer protection location 2320, is connected with exciting transformer 2120, for working when exciting transformer 2120
Alarm signal is issued when abnormal, and equipment and system are protected to realize.It should be noted that being example in the present embodiment
A kind of embodiment of protective module 2300 is lifted, however not excluded that there are other embodiments.
Fig. 5 is referred to, the excitation unit 2110 includes switching group 2111, current-limiting resistance in one of the embodiments,
2112 and steering diode 2113.Two switches in the switching group 2111 are rectified with 2110 voltage input of excitation unit respectively
Cathode is connected, for reducing accident range as cut-off point controllable between excitation voltage input end and excitation system, convenient for behaviour
Make and debugs；The current-limiting resistance 2112 is connected with the anode of excitation cell voltage input terminal, for limiting excitation unit 2110
The size of excitation electric current prevents the excessive damage external dc system of excitation electric current；The steering diode 2113 and current-limiting resistance
2112 series connection prevent the overvoltage in excitation winding circuit during excitation anti-for realizing the reverse blocking of excitation unit 2110
It is sent to external dc system.It should be noted that only illustrating a kind of embodiment party of excitation unit 2110 in the present embodiment
Formula, however not excluded that have other embodiments.
The rectification unit 2130 includes continued flow resistance 2131 and power rectifier 2132 in one of the embodiments,.
The continued flow resistance 2131 is in parallel with power rectifier 2132, plays the role of current-limiting protection；The power rectifier 2132 with
The exciting transformer 2120 is connected with the voltage output end of field regulator, for provide the exciting transformer 2120
Generator excitation winding is given after three-phase AC power power supply and the three-phase AC power power rectifier adjusted through field regulator
Power supply.It should be noted that only illustrating a kind of embodiment of rectification unit 2130 in the present embodiment, however not excluded that have other
Embodiment.
The field regulator sampling unit 2210 includes current transformer 2211, voltage in one of the embodiments,
Mutual inductor 2212 and field regulator sampling plate 2213.The current transformer 2211 is connected with dynamo current output end, uses
Detection electric current is converted to by setting ratio in the electric current for exporting generating set, for measurement and relay protection；The voltage is mutual
Sensor 2212 is connected with generator voltage output end, and the voltage for exporting generating set is converted to detection electricity by setting ratio
Pressure, for measurement and relay protection；The field regulator sampling plate 2213 and current transformer 2211 and voltage transformer
2212 output end is connected, and can connect with the field regulator for needing reception test to detect, to the voltage of input field regulator
And/or electric current is sampled.It should be noted that only illustrating a kind of field regulator sampling unit 2210 in the present embodiment
Embodiment, however not excluded that have other embodiments.
The monitoring unit 2220 includes Hall element 2221 and current divider 2222 in one of the embodiments,.With
Toward connection type in, Hall element 2221 be connected on generator excitation winding, de-excitation resistance 2311 and degaussing switch auxiliary touching
In the circuit that point 2313 is formed.In this way connection will lead to generating set shut down demagnetization during, exciter current of generator from
Generator excitation winding flows through Hall element 2221, degaussing switch auxiliary contact 2313 and de-excitation resistance 2311, to constitute one
A circuit.In demagnetization moment, exciting current still can be flowed through on Hall element 2221, is interfered to operator.By Hall
Element 2221 is adjusted to generator excitation winding, de-excitation resistance 2311 and degaussing switch auxiliary contact from original link position
Other than 2313 circuits constituted, and it is connected with generator excitation winding, for detecting magnetic field and its variation, generates induced voltage；
The current divider 2222, connects with Hall element 2221, the exciting current for measuring and in show circuit.It should be noted that
A kind of embodiment of monitoring unit 2220 is only illustrated in the present embodiment, however not excluded that there are other embodiments.
The demagnetization unit 2310 includes de-excitation resistance 2311, degaussing switch 2312 and goes out in one of the embodiments,
Magnetic switch auxiliary contact 2313.Described 2311 one end of de-excitation resistance is connected with degaussing switch auxiliary contact 2313, the other end and hair
Motor excitation winding one end is connected, and for consuming magnetic field energy, reaches demagnetization effect；Two in the degaussing switch 2312 are opened
Pass is connected with the positive and negative end of rectification unit 2130 respectively, for as controllable between generator excitation winding and field power supply
Cut-off point cut off between generator excitation winding and field power supply when generating set shuts down using degaussing switch
Access；The degaussing switch auxiliary contact 2313 are connected with the generator excitation winding other end, when degaussing switch 2312 disconnects
Degaussing switch auxiliary contact 2313 are closed, and are formed into a loop de-excitation resistance 2311 and generator excitation winding, are consumed magnetic field energy,
For overvoltage protection.It should be noted that only illustrating a kind of embodiment of demagnetization unit 2310 in the present embodiment, no
Exclusion has other embodiments.
The exciting transformer protection location 2320 includes that exciting transformer protects circuit in one of the embodiments,
2321 and current transformer 2322.The exciting transformer protection circuit 2321 is connected with current transformer 2322, for detecting
Parameter in three-phase power supply system, the signal an alert when 2120 misoperation of exciting transformer, to play protection excitation
The effect of transformer；2322 input terminal of current transformer is connected with dynamo current output end, output end and excitation transformation
2120 voltage input end of device is connected, and the electric current for exporting generating set is converted to detection electric current by setting ratio, for surveying
Amount and relay protection.It should be noted that only illustrating a kind of implementation of exciting transformer protection circuit 2320 in the present embodiment
Mode, however not excluded that have other embodiments.
The output end phase of the input terminal of the exciting transformer 2120 and current transformer in one of the embodiments,
Even, output end is connected with power rectifier 2132.
Before carrying out function test inspection to field regulator, field regulator input terminal and field regulator need to be sampled
Plate 2213 is connected and Hall element 2221 is connected and output end is connected with power rectifier 2132.Function test inspection starts
When first give the voltage input end of excitation unit 2110 plus DC voltage, the current-limiting resistance in excitation unit is for when limiting excitation
Excitation electric current in direct current system prevents the excessive damage circuit of excitation electric current；Steering diode is anti-for realizing excitation power supply
To blocking, prevent the overvoltage of generator excitation winding during excitation is counter from sending to external direct current system.By giving excitation list
First 2110 add DC voltage, give generator excitation winding to provide an initial additional excitation voltage, generate it centainly
Generator terminal voltage after voltage rating when excitation system can be made to reach a certain proportion of normal work, is disconnected and is being risen
The switch in unit 2110 is encouraged, to disconnect the access of excitation unit 2110 Yu excitation system.
When generator excitation winding normal operation, as generating set 110 drives circumgyration incision magnetic strength by drive shaft 120
Line, to generate alternating current.Frequency converter 130 is connected with drive shaft 120, is powered frequently by frequency converter 130 to drive shaft 120
The automatic adjustment of rate converted to realize generating set exploitation speed.The alternating current that generating set 110 generates is by being connected to hair
The output electricity of the generating set is raised and lowered by transformer 140 for 140 input terminal of transformer of 110 output end of motor group
Pressure makes the voltage of itself and power transmission electric network match.It is used by transmission line of electricity 160 the alternating current part adjusted by transformer 140
In to external power supply, part alternating current provides the electric energy needed for maintaining itself to operate to excitation system after being used to rectify.It is connected to
In the output end of transformer 140, transmission line of electricity 160 and the switching group 150 of the input terminal of tunable load 170, for as power generation
Controllable cut-off point between unit 110 and tunable load 170 reduces the accident range of generator, convenient for operation and debugging.Connection
In the tunable load 170 of voltage output end, by adjusting the resistance value of tunable load 170, the different loads feelings of simulation generator set
Working condition under condition.
A part of electric energy that generating set 110 is provided to itself operating first passes through field regulator Current Transformer respectively
2211, field regulator voltage transformer 2212 and exciting transformer protect sampling current transformer 2322, be respectively used to by
The voltage and or current of generating set output is converted to detection voltage and or current by setting ratio, is used as measurement and relay is protected
Shield.Field regulator sampling plate 2213 and field regulator Current Transformer 2211, field regulator voltage transformer
2212 are connected, and connect with the field regulator for needing reception test to detect, to the voltage and or current of input field regulator
It is sampled.Exciting transformer protects circuit 2321 to be connected with exciting transformer protection sampling current transformer 2322, for working as
Signal an alert when 2120 misoperation of exciting transformer, to play the role of protecting exciting transformer 2120.
By field regulator Current Transformer 2211, field regulator voltage transformer 2212 and exciting transformer
The converted a part of voltage and or current of protection sampling current transformer 2322 is added to the input terminal of exciting transformer 2120,
Three-phase alternating current needed for the three-phase AC power power supply that generator exports is converted to excitation system by exciting transformer 2120
Power power-supply；Another part electric energy is added to field regulator input terminal, is adjusted by field regulator, control generator exports
Three-phase AC power power supply.
Three-phase AC power power supply needed for excitation system is respectively from the output end of exciting transformer and field regulator
Output end is added to 2130 input terminal of rectification unit, supplies after the three-phase AC power power supply rectification filter of 2130 pairs of rectification unit inputs
Generator excitation winding is given, to maintain the normal operation of generator excitation winding.
Demagnetization unit 2310 is in series in access between rectification unit 2130 and excitation winding.When excitation system is asked
When topic generating set needs out of service, demagnetization unit 2310 can be cut off rapidly between generator excitation winding and excitation system
Access, and consume remaining magnetic field energy in generator excitation winding, other working equipments in protection system.
By monitoring unit 2220 in display module 2200 and field regulator sampling unit 2210 come to adjustment of field excitation
Parameter under device work running environment is shown, the parameter of display is measured when operator can work by field regulator
To judge whether the field regulator can work normally.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (12)
1. a kind of nuclear power plant's emergency diesel dynamo off-line testing system characterized by comprising
Physical test component, for simulating generator input-output system；
Field regulator interface module is connected with the physical test component, is used for simulation excitation system actual motion environment, connects
Enter field regulator, function test inspection is carried out to field regulator.
2. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 1, which is characterized in that the physics
Test assembly includes:
Generating set generates electric power output for closed load circuit；
Drive shaft is connected with the generating set, is used for driven generator；
Frequency converter is connected with the drive shaft, for realizing generating set by the conversion to drive shaft frequency of supply
The automatic adjustment of exploitation speed；
Transformer is connected with the generating set, for the output voltage of the generating set to be raised and lowered, makes output voltage
Match with the voltage of power transmission electric network；
Transmission line of electricity is used for transmission the voltage and transmission electric power of generating set generation；
Tunable load is connected with the transmission line of electricity, the different loads situation for simulation generator set；
Switching group is connected in transmission line of electricity, as cut-off point controllable between generating set and tunable load.
3. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 1 or 2, which is characterized in that described
Field regulator interface module includes:
Electrical source of power module, for being powered to excitation system；
Control module, for being controlled field regulator, being adjusted and being shown；
Protective module, for being protected to generating set and excitation system.
4. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 3, which is characterized in that the power
Power module includes:
Exciting transformer, the three-phase AC power power supply for exporting generating set are converted to three intersections needed for excitation system
Flow power power-supply；
Rectification unit is used for supply generator excitation winding after three-phase AC power power rectifier；
Excitation unit is connected with generator excitation winding, for providing initial excitation voltage to generator excitation winding.
5. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 4, which is characterized in that the rectification
Unit includes:
Power rectifier is connected with the voltage output end of the exciting transformer and field regulator, is used for the excitation-transformation variable
To power generation after the three-phase AC power power supply of depressor offer and the three-phase AC power power rectifier adjusted through field regulator
The power supply of machine excitation winding；
Continued flow resistance, it is in parallel with power rectifier, for playing the role of current-limiting protection.
6. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 4, which is characterized in that the excitation
Unit includes:
Switching group is connected with excitation unit Input voltage terminal, for as controllable between excitation voltage input end and excitation system
Cut-off point；
Current-limiting resistance is connected with switching group, for limiting the size of excitation unit excitation electric current；
Steering diode is connected with current-limiting resistance, for realizing the reverse blocking of excitation unit.
7. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 3, which is characterized in that the control
Module includes:
Field regulator sampling unit for sampling the alternating voltage and/or electric current of generating set output, and is supplied to Excitation Adjustment
Save device；
Monitoring unit is connected in the circuit where generator excitation winding, for monitoring exciting current.
8. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 7, which is characterized in that the excitation
Adjuster sampling unit includes:
Field regulator sampling plate, for connecting field regulator, to input field regulator generator alternating current voltage and/or
Electric current is sampled；
Current transformer is connected with field regulator sampling plate, and the electric current for exporting generating set is converted by setting ratio
To detect electric current；
Voltage transformer is connected with field regulator sampling plate, and the voltage for exporting generating set is converted by setting ratio
To detect voltage.
9. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 7, which is characterized in that the monitoring
Unit includes:
Hall element is connected with generator excitation winding, for detecting the variation of exciting current and exciting current, is used for excitation system
System control；
Current divider is connected with excitation winding bus, for measuring and showing the exciting current.
10. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 3, which is characterized in that the guarantor
Protecting module includes:
Demagnetization unit is connected with generator excitation winding, for reducing generator excitation winding when generating set is out of service
In magnetic field energy；
Exciting transformer protection location, is connected with exciting transformer, for issuing alarm signal when exciting transformer operation irregularity
Number.
11. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 10, which is characterized in that described to go out
Magnetic cell includes:
De-excitation resistance, one end are connected with degaussing switch auxiliary contact, and the other end is connected with generator excitation winding one end, for disappearing
Consume magnetic field energy；
Degaussing switch is connected with rectification unit, for as cut-off point controllable between generator excitation winding and field power supply；
Degaussing switch auxiliary contact are connected with the generator excitation winding other end, and when degaussing switch disconnects, degaussing switch is assisted
Contact closure is formed into a loop de-excitation resistance and generator excitation winding, consumes magnetic field energy.
12. nuclear power plant's emergency diesel dynamo off-line testing system according to claim 10, which is characterized in that described to encourage
Magnetic transformer protection location includes:
Current transformer is connected with exciting transformer voltage input end, and the electric current for exporting generating set is by setting ratio
Be converted to detection electric current；
Exciting transformer protects circuit, is connected with current transformer, for detecting the parameter in three-phase power supply system, works as excitation-transformation variable
Signal an alert when depressor misoperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910862555.XA CN110488191A (en) | 2019-09-12 | 2019-09-12 | Nuclear power plant's emergency diesel dynamo off-line testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910862555.XA CN110488191A (en) | 2019-09-12 | 2019-09-12 | Nuclear power plant's emergency diesel dynamo off-line testing system |
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| CN112114253A (en) * | 2020-07-31 | 2020-12-22 | 东风商用车有限公司 | Vehicle generator loading experimental device |
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Application publication date: 20191122 |