CN110531263A - Nuclear power plant's emergency diesel dynamo off-line testing method - Google Patents
Nuclear power plant's emergency diesel dynamo off-line testing method Download PDFInfo
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- CN110531263A CN110531263A CN201910862767.8A CN201910862767A CN110531263A CN 110531263 A CN110531263 A CN 110531263A CN 201910862767 A CN201910862767 A CN 201910862767A CN 110531263 A CN110531263 A CN 110531263A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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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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- 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
- G01R31/346—Testing of armature or field windings
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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 method, including simulation generator input/output signal and simulation excitation system actual motion environment.In conjunction with the input/output signal and excitation system actual motion environment of the generator, function test inspection can be carried out to it after accessing 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 method.
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 alternating-current supply is rectified by power rectification bridge, is provided to generator excitation winding
Direct current, 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 correlation function test checks, provides a kind of nuclear power for building simulation field regulator normal operation environment
Factory's emergency diesel dynamo off-line testing method.
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 method, including simulation generator input/output signal and simulation
Excitation system actual motion environment.In conjunction with the input/output signal and excitation system actual motion environment of the generator, access
After field regulator, function test inspection can be carried out to field regulator.
The step of simulation generator input/output signal includes: in one of the embodiments,
It is rotated using drive shaft driven generator group and generates active power kinetic energy and revolving speed；
The frequency of supply of the drive shaft is adjusted so that the revolving speed of the generating set is raised and lowered, adjusts excitation system
The voltage of the output voltage and power transmission electric network that make the generating set matches；
The output voltage is exported to tunable load；
The tunable load loading condition different for simulation generator set；
Transmission of electricity access between control generating set and tunable load is to start or termination test.
The step of simulation excitation system actual motion environment includes access adjustment of field excitation in one of the embodiments,
Device is powered excitation system；Exciting current in excitation system is monitored and is shown；Field regulator is controlled
System generates adjustment signal, obtains the running state data of field regulator and display；When system running state exception, to hair
Motor group and excitation system are protected.
Described the step of being powered to excitation system includes mentioning to generator excitation winding in one of the embodiments,
For initial excitation voltage；Three-phase alternating current needed for the three-phase AC power power supply that generating set exports is converted to excitation system
Power power-supply；Three-phase AC power power supply needed for excitation system is rectified, and is supplied to generator excitation winding.
Described the step of initial excitation voltage is provided to generator excitation winding includes defeated in one of the embodiments,
Enter DC power supply as excitation power supply；The size for limiting excitation electric current, protects external direct current system；The excitation is connected
Supply access between power supply and excitation system.
Described the step of rectifying to three-phase alternating-current supply needed for excitation system, includes in one of the embodiments,
Three-phase alternating-current supply needed for excitation system is rectified using power rectifier, is filtered, and be supplied to generator excitation around
Group；Current-limiting protection is carried out to the power rectifier.
The exciting current in excitation system is monitored in one of the embodiments, includes with the step of display
Detect the variation of the exciting current and exciting current in excitation system；The display exciting current is measured using current divider.
The running state data for obtaining field regulator and include pair the step of display in one of the embodiments,
The voltage and or current of generating set output is adjusted and samples, and is supplied to field regulator.
The voltage and or current to generating set output is adjusted and sampling in one of the embodiments,
Step includes the voltage and or current of generating set output being converted to detection voltage and or current by setting ratio, and provide
Sampling is carried out to field regulator sampling plate to show.
Described the step of protecting to generating set and excitation system includes detection excitation in one of the embodiments,
The working condition of transformer issues when exciting transformer operating status exception and is operating abnormally signal；When excitation system runs shape
When state exception generating set needs out of service, the magnetic field energy in generator excitation winding is reduced.
The step of detection exciting transformer working condition includes exporting generating set in one of the embodiments,
Electric current by setting ratio be converted into detection electric current；Detection and the parameter under display exciting transformer working condition, work as excitation-transformation variable
Misoperation signal is issued when depressor is operating abnormally.
The step of magnetic field energy reduced in generator excitation winding includes detecting in one of the embodiments,
When the abnormal signal, de-excitation resistance is accessed, is formed into a loop de-excitation resistance and generator excitation winding.
Nuclear power plant's emergency diesel dynamo off-line testing method provided by the invention, including simulation generator input and output letter
Number and simulation excitation system actual motion environment.In conjunction with the input/output signal and excitation system actual motion ring of the generator
Border can carry out function test inspection to it after accessing field regulator.Nuclear power plant's emergency diesel dynamo provided by the invention
Off-line testing method is with traditional off-line testing method the difference lies in that traditional off-line testing method is just for equipment itself
The single off-line testing operation carried out, and off-line testing method of the invention is according to complete pre-designed department of physics
The off-line testing method that field regulator is unfolded in system environment.Due to off-line testing method provided by the invention with it is traditional offline
Test method is complete compared to more systematic, so also more excellent for the test effect of field regulator performance.
Detailed description of the invention
Fig. 1 is nuclear power plant's emergency diesel dynamo off-line testing method flow diagram；
Fig. 2 is each element connection schematic diagram in the simulation generator input/output signal method of the embodiment of the present invention；
Fig. 3 is the simulation excitation system actual motion environment method flow diagram of the embodiment of the present invention；
Fig. 4 is each element connection schematic diagram in the simulation excitation system actual motion environment method 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 method of the embodiment of the present invention is by erecting field regulator
Working environment simulate the actual operation state of field regulator, to carry out function to by improved field regulator
On test inspection.Nuclear power plant's emergency diesel dynamo off-line testing method provided in an embodiment of the present invention and traditional offline examination
Proved recipe method the difference lies in that the single off-line testing that traditional off-line testing method is carried out just for equipment itself operates,
And off-line testing method of the invention is that basis builds complete pre-designed physical system environment to field regulator exhibition
The off-line testing method opened.Since off-line testing method provided by the invention is more systematic compared with traditional off-line testing method
Completely, so it is also more excellent for the test effect of field regulator performance.
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, described the embodiment of the invention provides a kind of nuclear power plant's emergency diesel dynamo off-line testing method
The step of nuclear power plant's emergency diesel dynamo off-line testing method includes:
Step S100: simulation generator input/output signal.It drives generating set to generate electric power using drive shaft, adjusts
The output voltage of generating set and the voltage of power transmission electric network match, by power transmission to outside.
Step S200: simulation excitation system actual motion environment.Field regulator is simulated by erecting excitation system
Real work running environment.
Step S300: in conjunction with the generator input/output signal and excitation system actual motion environment to field regulator
Carry out function test inspection.Improved field regulator is passed through in access, is detected and is sent out by the generator input/output signal
Motor group power generation performance situation detects running parameter of the field regulator under excitation system actual motion environment.
Fig. 2 is referred to, the step of simulation generator input/output signal includes: in one of the embodiments,
Step S102: output voltage is generated using the rotation of 120 driven generator group 110 of drive shaft.110 benefit of generating set
Induced electromotive force is exported with electromagnetic induction principle, and closed load circuit generates electric power output.
Step S104: the frequency of supply of the drive shaft 120 is adjusted so that the output of the generating set is raised and lowered
The voltage of voltage, the output voltage and power transmission electric network that make the generating set matches.Frequency converter 130 and 120 phase of drive shaft
Even, the frequency converter 130 by 120 frequency of supply of drive shaft conversion come realize 110 exploitation speed of generating set from
It is dynamic to adjust.The output end of the generating set 110 is connected with the input terminal of transformer 140, the transformer 140 for increase or
The output voltage for reducing the generating set 110 keeps it identical as the voltage of power transmission electric network.The output end of the transformer 140 with
A switch in switching group 150 is connected.
Step S106: the output voltage is exported to tunable load；The tunable load is used for simulation generator set not
Same loading condition.
Step S108: control generating set and special the transmission of electricity access between load is adjusted to start or termination test.It is described to open
Each switch in pass group 150 is connected to the output end of the transformer 140, in transmission line of electricity 160 and tunable load 170
Input terminal, for reducing the accident range of generator as cut-off point controllable between generating set and tunable load, convenient for behaviour
Make and debugs.The transmission line of electricity 160 is connected to transformer 140 and tunable load 170, is used for transmission the electricity of generating set generation
Pressure.The tunable load 170 is used for the different loads situation of simulation generator set.
It should be noted that a kind of embodiment for simulating generator input/output signal is only illustrated in the present embodiment,
It has been not excluded for other embodiments.
Fig. 3 is referred to, the step of simulation excitation system actual motion environment includes in one of the embodiments,
Step S210: excitation system is powered.One initial excitation of excitation system is given by excitation unit 2110
Power supply allows excitation system to get into smooth, voltage rating when excitation system being made to reach a certain proportion of normal work.Using excitation
The three-phase AC power power supply that transformer 2120 and rectification unit 2130 export generating set is adjusted, and generating set is defeated
Three-phase AC power power supply needed for three-phase AC power power supply out is converted to excitation system, and be supplied to generator excitation around
Group supplies the excitation needs of itself using a part of generating set self generating power.
Step S220: field regulator is controlled, adjusted and is shown.Connected using field regulator sampling unit 2210
Field regulator is connect, the voltage and or current of input field regulator is sampled, and be supplied to field regulator.
Step S230: the exciting current in monitoring excitation system.Monitoring unit 2310 is connected on generator excitation winding institute
Circuit in, for monitoring exciting current.
Step S240: generating set and excitation system are protected.Exciting transformer protection location 2420 and excitation-transformation variable
Depressor 2120 is connected, for issuing alarm signal when 2120 operation irregularity of exciting transformer, to realize to equipment and system
It is protected.When generating set is out of service, it is connected using demagnetization unit 2410 with generator excitation winding, quickly reduces hair
Magnetic field energy in motor excitation winding, so that the induced electromotive force for reducing generator rear remaining out of service causes to damage to equipment
It is bad.
It should be noted that only illustrating a kind of embodiment party of simulation excitation system actual motion environment in the present embodiment
Formula, however not excluded that have other embodiments.
Refer to Fig. 4, in one of the embodiments, described the step of excitation system is powered include:
Step S212: an initial field power supply is provided to excitation system.In the voltage input end of excitation unit 2110
Input DC power is as excitation power supply, the field power supply originated to generator excitation winding one.Current-limiting resistance 2112 with rise
The anode for encouraging cell voltage input terminal is connected, and for limiting the size of 2110 excitation electric current of excitation unit, prevents excitation electric current mistake
Big damage external dc system；Steering diode 2113 is connected with current-limiting resistance 2112, for realizing the anti-of excitation unit 2110
To blocking, prevent the overvoltage in excitation winding circuit during excitation is counter to be sent to external dc system.In switching group 2111
Two switches are connected with 2110 voltage input end positive and negative anodes of excitation unit respectively, for as excitation power input and excitation system
Controllable cut-off point between system reduces accident range, convenient for operation and debugging.
Step S212: three-phase alternating current needed for the three-phase AC power power supply that generating set exports is converted to excitation system
Power power-supply, and it is supplied to generator excitation winding.The output of the input terminal and current transformer of the exciting transformer 2120
End is connected, and the output end of exciting transformer 2120 is connected with power rectifier 2132.Power rectifier 2132 and exciting transformer
2120 are connected with the voltage output end of field regulator, the three-phase alternating-current supply for providing the exciting transformer 2120 and
To generator excitation winding power after the three-phase alternating-current supply rectification adjusted through field regulator.Continued flow resistance 2131 and power
Rectifier 2132 is in parallel, for carrying out current-limiting protection to power rectifier.
It should be noted that only illustrating the embodiment that a kind of pair of excitation system is powered in the present embodiment, do not arrange
Except there is other embodiments.
It is described in one of the embodiments, field regulator is controlled, is adjusted include: with the step of display
Step S222: the input signal of field regulator is adjusted.Current transformer 2211 and dynamo current are defeated
Outlet is connected, and the electric current for exporting generating set is converted to detection electric current by setting ratio, for measurement and relay protection；
Voltage transformer 2212 is connected with generator voltage output end, and the voltage for exporting generating set is converted to by setting ratio
Voltage is detected, for measurement and relay protection.
Step S224: sampling is carried out to the input signal of field regulator and is shown.Field regulator sampling plate 2213 and electricity
Current transformer 2211 is connected with the output end of voltage transformer 2212, can connect with the field regulator for needing reception test to detect
It connects, the voltage and or current of input field regulator is sampled.
It controlled, adjusted and is shown it should be noted that only illustrating a kind of pair of field regulator in the present embodiment
Embodiment, however not excluded that have other embodiments.
The exciting current in excitation system is monitored and packet the step of display in one of the embodiments,
It includes:
Step S232: changes of magnetic field is detected using Hall element 2311, and generates induced electromotive force.In previous connection
In mode, Hall element 2311 is connected on 2413 shape of generator excitation winding, de-excitation resistance 2411 and degaussing switch auxiliary contact
At circuit in.Connection will lead to during generating set shuts down demagnetization in this way, and exciter current of generator is encouraged from generator
Magnetic winding flows through Hall element 2311, de-excitation resistance 2411 and degaussing switch auxiliary contact 2413, to constitute a circuit.In
Demagnetization moment still can flow through exciting current on Hall element 2311, interfere to operator.By Hall element 2311 from
Link position originally is adjusted to time that generator excitation winding, de-excitation resistance 2411 and degaussing switch auxiliary contact 2413 are constituted
Other than road, and it is connected with generator excitation winding, for detecting magnetic field and its variation, generates induced voltage.
Step S234: the exciting current in induced electromotive force and show circuit that measurement Hall element 2311 generates.It shunts
Device 2312 and Hall element 2311, the exciting current for measuring and in show circuit.
It should be noted that the exciting current for only illustrating in a kind of pair of excitation system in the present embodiment be monitored with
The embodiment of display, however not excluded that have other embodiments.
Described the step of protecting to generating set and excitation system, includes: in one of the embodiments,
Step S242: the electric current that generating set exports is converted into detection electric current by setting ratio, for measurement and relay
Protection, checks the working condition of exciting transformer, the signal an alert when there is abnormal operating condition.Current Mutual Inductance
2422 input terminal of device is connected with dynamo current output end, and output end is connected with 2120 voltage input end of exciting transformer
The electric current that generating set exports is converted into detection electric current by setting ratio, for measurement and relay protection.Using excitation transformation
Device protection circuit 2421 is connected with current transformer 2422, for detecting the parameter in three-phase power supply system, works as exciting transformer
Signal an alert when 2120 misoperation, to play the role of protecting exciting transformer.
Step S244: when generating set is out of service, quickly reducing the magnetic field energy in generator excitation winding, thus
The induced electromotive force for reducing generator rear remaining out of service damages equipment.2311 one end of de-excitation resistance and degaussing switch
Auxiliary contact 2313 are connected, and the other end is connected with generator excitation winding one end, for consuming magnetic field energy, reach demagnetization effect
Fruit；Two switches in degaussing switch 2312 are connected with the positive and negative end of rectification unit 2130 respectively, for being used as generator
Controllable cut-off point between excitation winding and field power supply is cut off using degaussing switch and is generated electricity when generating set shuts down
Access between machine excitation winding and field power supply；Degaussing switch auxiliary contact 2313, with generator excitation winding other end phase
Even, when degaussing switch 2312 disconnects, degaussing switch auxiliary contact 2313 are closed, make de-excitation resistance 2311 and generator excitation around
Group forming circuit, consumes magnetic field energy, is used for overvoltage protection.
It should be noted that only illustrating a kind of pair of generating set and step that excitation system is protected in the present embodiment
Rapid embodiment, however not excluded that have other embodiments.
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 2311 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 2112 in excitation unit 2110 is for limiting
Excitation electric current when excitation processed in direct current system prevents the excessive damage circuit of excitation electric current；Steering diode 2113 for realizing
The reverse blocking of excitation power supply prevents the overvoltage of generator excitation winding during excitation is counter from sending to external direct current system.
By providing an initial additional excitation voltage to generator excitation winding, making to excitation unit 2110 plus DC voltage
It generates certain generator terminal voltage, after voltage rating when excitation system can be made to reach a certain proportion of normal work,
The switch in excitation unit 2110 is disconnected, 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 2422, 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 2422 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 2410 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 2410 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.
It is worked under running environment by monitoring unit 2420 and field regulator sampling unit 2210 field regulator
Parameter shown that the parameter of measurement display judges the adjustment of field excitation when operator can work by field regulator
Whether device 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 method characterized by comprising
Simulate generator input/output signal；
Simulation excitation system actual motion environment；
In conjunction with the input/output signal and excitation system actual motion environment of the generator, function examination is carried out to field regulator
Test inspection.
2. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 1, which is characterized in that the simulation
The step of generator input/output signal includes:
It is rotated using drive shaft driven generator group and generates active power kinetic energy and revolving speed；
The frequency of supply of the drive shaft is adjusted so that the revolving speed of the generating set is raised and lowered, adjusting excitation system makes institute
The voltage of the output voltage and power transmission electric network of stating generating set matches；
The output voltage is exported to tunable load；
The tunable load loading condition different for simulation generator set；
Transmission of electricity access between control generating set and tunable load is to start or termination test.
3. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 1 or 2, which is characterized in that described
The step of simulation excitation system actual motion environment includes:
Field regulator is accessed, excitation system is powered；
Exciting current in excitation system is monitored and is shown；
Field regulator is controlled, generates adjustment signal, obtains the running state data of field regulator and display；
When system running state exception, generating set and excitation system are protected.
4. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 3, which is characterized in that described pair is encouraged
The step of magnetic system is powered include:
Initial excitation voltage is provided to generator excitation winding；
Three-phase AC power power supply needed for the three-phase AC power power supply that generating set exports is converted to excitation system；
Three-phase AC power power supply needed for excitation system is rectified, and is supplied to generator excitation winding.
5. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 4, which is characterized in that described to hair
Motor excitation winding provides the step of initial excitation voltage and includes:
Input DC power is as excitation power supply；
The size for limiting excitation electric current, protects external direct current system；
The supply access between the excitation power supply and excitation system is connected.
6. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 4, which is characterized in that described pair is encouraged
The step of three-phase alternating-current supply needed for magnetic system is rectified include:
Three-phase alternating-current supply needed for excitation system is rectified using power rectifier, is filtered, and is supplied to generator and encourages
Magnetic winding；
Current-limiting protection is carried out to the power rectifier.
7. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 3, which is characterized in that described pair is encouraged
Exciting current in magnetic system is monitored includes: with the step of display
Detect the variation of the exciting current and exciting current in excitation system；
The display exciting current is measured using current divider.
8. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 3, which is characterized in that the acquisition
The step of running state data of field regulator and display includes:
The voltage and or current of generating set output is adjusted and is sampled, and is supplied to field regulator.
9. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 8, which is characterized in that described pair of hair
The voltage and or current of motor group output is adjusted includes: with the step of sampling
The voltage and or current that generating set exports is converted into detection voltage and or current by setting ratio, and is supplied to and encourages
Magnestat sampling plate carries out sampling and shows.
10. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 3, which is characterized in that described right
The step of generating set and excitation system are protected include:
The working condition for detecting exciting transformer issues when exciting transformer operating status exception and is operating abnormally signal；
When excitation system operating status exception generating set needs out of service, the magnetic field energy in generator excitation winding is reduced
Amount.
11. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 10, which is characterized in that the inspection
Survey exciting transformer working condition the step of include:
The electric current of generating set output is converted into detection electric current by setting ratio；
Detection and the parameter under display exciting transformer working condition, misoperation letter is issued when exciting transformer is operating abnormally
Number.
12. nuclear power plant's emergency diesel dynamo off-line testing method according to claim 10, which is characterized in that described to subtract
The step of magnetic field energy in few generator excitation winding includes:
When detecting the abnormal signal, de-excitation resistance is accessed, is formed into a loop de-excitation resistance and generator excitation winding.
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| CN201910862767.8A CN110531263A (en) | 2019-09-12 | 2019-09-12 | Nuclear power plant's emergency diesel dynamo off-line testing method |
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Application publication date: 20191203 |