CN106301124A - A kind of generating set mechanical output delivering method and device - Google Patents
A kind of generating set mechanical output delivering method and device Download PDFInfo
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- CN106301124A CN106301124A CN201610985457.1A CN201610985457A CN106301124A CN 106301124 A CN106301124 A CN 106301124A CN 201610985457 A CN201610985457 A CN 201610985457A CN 106301124 A CN106301124 A CN 106301124A
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- China
- Prior art keywords
- preset
- mechanical output
- generator
- generating set
- power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
Abstract
The embodiment of the invention discloses a kind of generating set mechanical output delivering method and device, by the existing generator amature equation of motion is converted, obtain the relation formula of generator mechanical power and electromagnetic power, and then by calculating the mechanical output obtaining generating set, with the at present the most commonly used electrical power parameter of replacement, more accurately generating set real time execution characteristic to be analyzed, it is easy to understand more accurately the realtime power situation of electromotor during grid side disturbance, and avoid affecting the real time measure of generator power because of grid side generation disturbance event, stability is preferable.
Description
Technical field
The present invention relates to generator power field, particularly relate to a kind of generating set mechanical output delivering method and device.
Background technology
Along with the scale of power system increases day by day, structure is the most complicated, element continuous updating, particularly modern electric system
The application of a large amount of power electric components in system, is proposed new requirement to its analysis, planning and control method.Fit with this phase
Answering, generating set is as the offer electric energy unit in power system, it is possible to accurately research and analyse its dynamic characteristic to explain system
The importance of the dynamic behaviour of system highlights day by day.
At present, generator set control equipment (automatic excitation adjustor of generator, PSS, AGC etc.) control parameter is all based on greatly electricity
The electrical power (electric parameters fed back through measuring and calculating by net side senser and measuring instrument) of net side, and calculate accordingly
Arrive, but its precision is easily directly affected by net side electrical power.Therefore seek one and more can accurately reflect power generator real time power rate
Electric parameters, in order to replace the most widely used electrical power, to be suitable for the demand of the novel electric power system of current power electronization
It is those skilled in the art's technical issues that need to address.
Summary of the invention
Embodiments provide a kind of generating set mechanical output delivering method and device, generating set can be obtained
Mechanical output, with the at present the most commonly used electrical power parameter of replacement, in order to special to generating set real time execution more accurately
Property is analyzed, it is simple to understands the realtime power situation of electromotor during grid side disturbance more accurately, and avoids because of electrical network
Side occurs disturbance event to affect the real time measure of generator power, and stability is preferable.
Embodiments provide a kind of generating set mechanical output delivering method and device, including:
Get preset equation of rotor motion, be removed setting of preset friction torque and preset unloaded braking moment
Put, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetic torque and preset former
Motivation mechanical output, the equation of rotor motion after being converted；
Equation of rotor motion after described conversion is transplanted, obtains generator mechanical power pick-up formula；
According to the relevant parameter that the generating set got is corresponding, and combine described generator mechanical power pick-up formula
It is calculated mechanical output.
Preferably, described relevant parameter includes: electrical power, generator rotation moment and and the change letter of electromotor angular velocity
Breath.
Preferably, described in get preset equation of rotor motion, be removed preset friction torque and preset unloaded system
The setting of dynamic torque, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetism to turn
Square and preset prime mover mechanical output, the equation of rotor motion after being converted specifically includes:
Preset electromotor angular velocity in described preset equation of rotor motion is set to an appointment numerical value, removes preset
Friction torque and preset unloaded braking moment, use preset generator electromagnetic power and preset prime mover mechanical output to replace preset
Electromotor electromagnetic torque and preset prime mover mechanical output, the equation of rotor motion after being converted.
Preferably, described appointment numerical value is 1.
Preferably, described generator mechanical power pick-up formula is:
Wherein, PmFor the mechanical output of prime mover, PeFor the electromagnetic power of synchronous generator, M is generator rotation moment,
ω is electromotor angular velocity, ω0Angular velocity of rotation for reference axis.
Preferably, the embodiment of the present invention additionally provides a kind of generating set mechanical output pick-up device, including:
Converter unit, for getting preset equation of rotor motion, is removed preset friction torque and preset zero load
The setting of braking moment, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetism
Torque and preset prime mover mechanical output, the equation of rotor motion after being converted；
Transposition unit, for transplanting the equation of rotor motion after described conversion, obtains generator mechanical power and becomes
Send formula；
Computing unit, for the relevant parameter corresponding according to the generating set got, and combines described Generator
Tool power pick-up formula is calculated mechanical output.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
Embodiments provide a kind of generating set mechanical output delivering method and device, wherein, generating set machine
Tool power delivering method includes: get preset equation of rotor motion, is removed preset friction torque and preset unloaded system
The setting of dynamic torque, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetism to turn
Square and preset prime mover mechanical output, the equation of rotor motion after being converted；Equation of rotor motion after described conversion is entered
Row transposition, obtains generator mechanical power pick-up formula；According to the relevant parameter that the generating set got is corresponding, and combine
Described generator mechanical power pick-up formula is calculated mechanical output.A kind of generating set machinery that the embodiment of the present invention provides
Power delivering method and device, can obtain the mechanical output of generating set, with the at present the most commonly used electrical power ginseng of replacement
Number, in order to more accurately generating set real time execution characteristic is analyzed, it is simple to during grid side disturbance more accurately
Solve the realtime power situation of electromotor, and avoid affecting the real time measure of generator power because of grid side generation disturbance event,
Stability is preferable.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of a kind of generating set mechanical output delivering method that Fig. 1 provides for the embodiment of the present invention；
The structural representation of a kind of generating set mechanical output pick-up device that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of generating set mechanical output delivering method and device, generating set can be obtained
Mechanical output, with the at present the most commonly used electrical power parameter of replacement, in order to special to generating set real time execution more accurately
Property is analyzed, it is simple to understands the realtime power situation of electromotor during grid side disturbance more accurately, and avoids because of electrical network
Side occurs disturbance event to affect the real time measure of generator power, and stability is preferable.
For making the goal of the invention of the present invention, feature, the advantage can be the most obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that disclosed below
Embodiment be only a part of embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiments that those of ordinary skill is obtained under not making creative work premise, broadly fall into present invention protection
Scope.
Refer to Fig. 1, a kind of generating set mechanical output delivering method that the embodiment of the present invention provides, including:
101, get preset equation of rotor motion, be removed preset friction torque and preset unloaded braking moment
Arrange, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetic torque and preset
Prime mover mechanical output, the equation of rotor motion after being converted；
Preset electromotor angular velocity in preset equation of rotor motion is set to an appointment numerical value, removes preset friction
Torque and preset unloaded braking moment, use preset generator electromagnetic power and preset prime mover mechanical output to replace preset generating
Dynamo-electric magnetic torque and preset prime mover mechanical output, the equation of rotor motion after being converted.Wherein, it is intended that numerical value is 1.
102, the equation of rotor motion after conversion is transplanted, obtain generator mechanical power pick-up formula；
103, according to the relevant parameter that the generating set got is corresponding, and generator mechanical power pick-up formula is combined
It is calculated mechanical output.
In the present embodiment, under the rotary motion state of generator amature, according to Newton's law, available perunit value is expressed as
Equation of rotor motion:
Wherein
In formula, M is the rotary inertia of unit rotor；ω is the angular velocity of rotation of electromotor, ω0The anglec of rotation for reference axis
Speed；TmFor the machine torque of prime mover, be driving torque, take on the occasion of；TeFor the electromagnetic torque of electromotor, TΩFor friction torque,
T0For unloaded braking moment, take negative value；PmMechanical output for prime mover；PeElectromagnetic power for synchronous generator.
Due to the effect of the various stability contorting measures of power system, the change of ω is little, thus in order to save amount of calculation,
It is 1 by the ω value in formula (2), utilizes power to replace torque.And friction torque and the unloaded braking in big-and-middle capacity unit turns
Square is relatively small, and the error caused after ignoring its impact is little, therefore formula (1) can be write a Chinese character in simplified form and obtain
Transplant
Input parameter by generating set mechanical output transmitter: electrical power Pe, generator rotation moment M and rotor rotation
The change information of tarnsition velocity ω, according to electromagnetic power and mechanical output relational expression (4), can obtain mechanical output Pm。
Refer to Fig. 2, a kind of generating set mechanical output pick-up device that the embodiment of the present invention provides, including:
201, converter unit, for getting preset equation of rotor motion, is removed preset friction torque and preset
The setting of unloaded braking moment, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor
Electromagnetic torque and preset prime mover mechanical output, the equation of rotor motion after being converted；
202, transposition unit, for transplanting the equation of rotor motion after conversion, obtains generator mechanical power and becomes
Send formula；
203, computing unit, for the relevant parameter corresponding according to the generating set got, and combines Generator
Tool power pick-up formula is calculated mechanical output.
In the present embodiment, relevant parameter includes: electrical power, generator rotation moment and and the change of electromotor angular velocity
Information.
Above examples provide a kind of generating set mechanical output delivering method and device, the machine of generating set can be obtained
Tool power, with the at present the most commonly used electrical power parameter of replacement, in order to more accurately to generating set real time execution characteristic
It is analyzed, it is simple to during grid side disturbance, understand the realtime power situation of electromotor more accurately, and avoid because of grid side
Occurring disturbance event to affect the real time measure of generator power, stability is preferable.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the system of foregoing description,
The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method are permissible
Realize by another way.Such as, device embodiment described above is only schematically, such as, and described unit
Dividing, be only a kind of logic function and divide, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme
's.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated list
Unit both can realize to use the form of hardware, it would however also be possible to employ the form of SFU software functional unit realizes.
If described integrated unit realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part that in other words prior art contributed or this technical scheme completely or partially can be with the form of software product
Embodying, this computer software product is stored in a storage medium, including some instructions with so that a computer
Equipment (can be personal computer, server, or the network equipment etc.) performs the complete of method described in each embodiment of the present invention
Portion or part steps.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example only in order to technical scheme to be described, is not intended to limit；Although with reference to front
State embodiment the present invention has been described in detail, it will be understood by those within the art that: it still can be to front
State the technical scheme described in each embodiment to modify, or wherein portion of techniques feature is carried out equivalent；And these
Amendment or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a generating set mechanical output delivering method, it is characterised in that including:
Get preset equation of rotor motion, be removed preset friction torque and the setting of preset unloaded braking moment, and
Preset generator electromagnetic power and preset prime mover mechanical output is used to replace preset electromotor electromagnetic torque and preset prime mover
Mechanical output, the equation of rotor motion after being converted；
Equation of rotor motion after described conversion is transplanted, obtains generator mechanical power pick-up formula；
According to the relevant parameter that the generating set got is corresponding, and combine the calculating of described generator mechanical power pick-up formula
Obtain mechanical output.
Generating set mechanical output delivering method the most according to claim 1, it is characterised in that described relevant parameter bag
Include: electrical power, generator rotation moment and and the change information of electromotor angular velocity.
Generating set mechanical output delivering method the most according to claim 1, it is characterised in that described in get preset
Equation of rotor motion, is removed preset friction torque and the setting of preset unloaded braking moment, and uses preset generating electromechanics
Magnetic power and preset prime mover mechanical output replace preset electromotor electromagnetic torque and preset prime mover mechanical output, are converted
After equation of rotor motion specifically include:
Preset electromotor angular velocity in described preset equation of rotor motion is set to an appointment numerical value, removes preset friction
Torque and preset unloaded braking moment, use preset generator electromagnetic power and preset prime mover mechanical output to replace preset generating
Dynamo-electric magnetic torque and preset prime mover mechanical output, the equation of rotor motion after being converted.
Generating set mechanical output delivering method the most according to claim 3, it is characterised in that described appointment numerical value is 1.
Generating set mechanical output delivering method the most according to claim 1, it is characterised in that described generator mechanical merit
Rate pick-up formula is:
Wherein, PmFor the mechanical output of prime mover, PeFor the electromagnetic power of synchronous generator, M is generator rotation moment, and ω is
Electromotor angular velocity, ω0Angular velocity of rotation for reference axis.
6. a generating set mechanical output pick-up device, it is characterised in that including:
Converter unit, for getting preset equation of rotor motion, is removed preset friction torque and preset unloaded braking
The setting of torque, and use preset generator electromagnetic power and preset prime mover mechanical output to replace preset electromotor electromagnetic torque
With preset prime mover mechanical output, the equation of rotor motion after being converted；
Transposition unit, for transplanting the equation of rotor motion after described conversion, obtains generator mechanical power pick-up public
Formula；
Computing unit, for the relevant parameter corresponding according to the generating set got, and combines described generator mechanical merit
Rate pick-up formula is calculated mechanical output.
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| CN201610985457.1A CN106301124A (en) | 2016-11-09 | 2016-11-09 | A kind of generating set mechanical output delivering method and device |
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| CN201610985457.1A CN106301124A (en) | 2016-11-09 | 2016-11-09 | A kind of generating set mechanical output delivering method and device |
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Cited By (1)
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| CN110850169A (en) * | 2019-11-13 | 2020-02-28 | 南方电网科学研究院有限责任公司 | Method and device for testing ultralow frequency phase frequency characteristic of water turbine speed regulating system |
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| CN102360182A (en) * | 2011-09-14 | 2012-02-22 | 电子科技大学 | Method for carrying out simulation on operation of isolated island of wind-gas turbine hybrid power system |
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| CN110850169A (en) * | 2019-11-13 | 2020-02-28 | 南方电网科学研究院有限责任公司 | Method and device for testing ultralow frequency phase frequency characteristic of water turbine speed regulating system |
| CN110850169B (en) * | 2019-11-13 | 2021-12-14 | 南方电网科学研究院有限责任公司 | Method and device for testing ultralow frequency phase frequency characteristic of water turbine speed regulating system |
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