CN106503324A - Marine wind electric field electrical system maximum transient Over-voltage Analysis method and system - Google Patents
Marine wind electric field electrical system maximum transient Over-voltage Analysis method and system Download PDFInfo
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Abstract
The present invention relates to a kind of marine wind electric field electrical system maximum transient Over-voltage Analysis method and system, obtain the structured data of marine wind electric field electrical system, and emulated according to structured data, set up the simplified wind energy turbine set electrical system with marine wind electric field electrical system as object of study.Emulate respectively simplify transient overvoltage of the wind energy turbine set electrical system in the case of combined floodgate, cut lock in the case of transient overvoltage and the transient overvoltage under short circuit fault condition, and then obtain the maximum transient overvoltage output result of marine wind electric field electrical system.Closing a floodgate, cutting lock and the transient overvoltage under short circuit fault condition by comprehensive marine wind electric field, obtain the maximum transient overvoltage of marine wind electric field electrical system under three kinds of operating modes, so as to the Insulation Coordination for electrical system, lectotype selection etc. provide reference, wind energy turbine set property safe and reliable to operation is improve.
Description
Technical field
The present invention relates to electric power network technical field, more particularly to a kind of marine wind electric field electrical system maximum transient mistake
Voltage analysis method and system.
Background technology
With the continuous development of China's economic society, the demand to regenerative resource is increasing.As a kind of cleaning energy
Source, the utilization of wind energy will be the important directions of future development.And marine wind electric field there is wind energy resources to enrich, is not take up land etc.
The most important thing of advantage, even more future development.
Operation maintenance problem with regard to marine wind electric field also increasingly receives publicity.Marine wind electric field is in a large number using electric power electricity
Cable, operating mode are complicated, bad environments, considerably increase the probability that various failures occur.For example, offshore wind farm field circuit breaker switching
Frequently, closing overvoltage is easily produced；Large Scale Offshore Wind Farm development is accelerated, and short trouble threatens the safety of electrical equipment.
How to be Insulation Coordination, lectotype selection of electrical system etc. provides reference, and there is important reality to wind energy turbine set safe and reliable operation
Border meaning.
Content of the invention
It is based on this, it is necessary to for the problems referred to above, there is provided a kind of sea turn for improving wind energy turbine set property safe and reliable to operation
Electric field electrical system maximum transient Over-voltage Analysis method and system.
A kind of marine wind electric field electrical system maximum transient Over-voltage Analysis method, comprises the following steps：
The structured data of marine wind electric field electrical system is obtained, and is emulated according to the structured data, set up with sea
Simplified wind energy turbine set electrical system of the upper wind energy turbine set electrical system for object of study；
Emulate transient overvoltage of the simplified wind energy turbine set electrical system in the case of combined floodgate respectively, cut lock in the case of temporary
Transient overvoltage under state overvoltage and short circuit fault condition；
Transient overvoltage according to the simplified wind energy turbine set electrical system in the case of combined floodgate, cut transient state mistake in the case of lock
Transient overvoltage under voltage and short circuit fault condition, obtains the maximum transient overvoltage of the marine wind electric field electrical system simultaneously
Output result.
A kind of marine wind electric field electrical system maximum transient Over-voltage Analysis system, including：
System simulation model sets up module, for obtaining the structured data of marine wind electric field electrical system, and according to described
Structured data is emulated, and sets up the simplified wind energy turbine set electrical system with marine wind electric field electrical system as object of study；
System transient modelling over-voltage simulation module, for emulating the simplified wind energy turbine set electrical system respectively in the case of combined floodgate
Transient overvoltage, cut transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock；
Maximum transient overvoltage acquisition module, for temporary in the case of combined floodgate according to the simplified wind energy turbine set electrical system
State overvoltage, transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock is cut, obtain the offshore wind farm
The maximum transient overvoltage output result of field electrical system.
Above-mentioned marine wind electric field electrical system maximum transient Over-voltage Analysis method and system, obtains marine wind electric field electric
The structured data of system, and emulated according to structured data, set up the letter with marine wind electric field electrical system as object of study
Wind-transformation electric field electrical system.Emulate respectively and simplify transient overvoltage of the wind energy turbine set electrical system in the case of combined floodgate, cut lock situation
Under transient overvoltage and the transient overvoltage under short circuit fault condition.According to simplified wind energy turbine set electrical system in the case of combined floodgate
Transient overvoltage, cut transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock, obtain offshore wind farm
The maximum transient overvoltage output result of field electrical system.Closing a floodgate, cutting lock and short trouble by comprehensive marine wind electric field
In the case of transient overvoltage, obtain three kinds of operating modes under marine wind electric field electrical system maximum transient overvoltage, so as to for electricity
The Insulation Coordination of gas system, lectotype selection etc. provide reference, improve wind energy turbine set property safe and reliable to operation.
Description of the drawings
Fig. 1 is the flow chart of marine wind electric field electrical system maximum transient Over-voltage Analysis method in an embodiment；
Fig. 2 is the illustraton of model for simplifying wind energy turbine set electrical system in an embodiment；
Fig. 3 is closing overvoltage voltage oscillogram in an embodiment；
Fig. 4 is to cut lock overvoltage voltage oscillogram in an embodiment；
Fig. 5 is short trouble overvoltage voltage oscillogram in an embodiment；
Fig. 6 is the structure chart of marine wind electric field electrical system maximum transient Over-voltage Analysis system in an embodiment.
Specific embodiment
In one embodiment, a kind of marine wind electric field electrical system maximum transient Over-voltage Analysis method, such as Fig. 1 institutes
Show, comprise the following steps：
Step S120：The structured data of marine wind electric field electrical system is obtained, and is emulated according to structured data, set up
Simplified wind energy turbine set electrical system with marine wind electric field electrical system as object of study.
The concrete composition of wind energy turbine set and layout type be not unique, and structured data specifically may include that marine wind electric field is electric
The data such as the annexation in system between the parameter of each element and element.PSCAD/EMTDC electromagnetic transient simulations can be passed through soft
Part, to having the Wind turbines and the wind energy turbine set of layout in parallel that connect with chain topology, sets up with whole wind-powered electricity generation
Field electrical system is the phantom of object of study, is simplified wind energy turbine set electrical system.By determining each unit in electrical system
Part calculation method of parameters, arranges the parameter of each element in simulation software, simulates the ruuning situation of actual wind energy turbine set.Simplify wind-powered electricity generation
Electrical system specifically may include equivalent source, cable, chopper, transformator, bus and blower fan, equivalent source by cable and
Bus connection chopper, transformator and blower fan.It is appreciated that simplifying wind energy turbine set electrical system may also include other types element.
Step S140：Emulate respectively and simplify transient overvoltage of the wind energy turbine set electrical system in the case of combined floodgate, cut lock situation
Under transient overvoltage and the transient overvoltage under short circuit fault condition.
By simulation software emulate respectively simplified wind energy turbine set electrical system in combined floodgate situation, cut lock situation and short trouble feelings
Transient overvoltage under condition.Specifically, in one embodiment, step S140 includes step 142 to step 146.
Step 142：When wind energy turbine set is in different network structures, each open circuit of simplified wind energy turbine set electrical system is respectively provided with
Device closes a floodgate, and emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of combined floodgate.
During emulation closing overvoltage, wind energy turbine set can be arranged by simulation software and be in different network structures.In wind energy turbine set
When being in different network structures, each breaker closing of simplified wind energy turbine set electrical system is respectively provided with.The chopper of combined floodgate includes
Land substation breakers, maritime transformer station chopper, main transformer high-pressure side chopper, main transformer low-pressure side chopper and
At least one in most long feeder breaker.It is appreciated that the chopper for closing a floodgate may also include other kinds of chopper.Pass through
Emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of combined floodgate, just can obtain simplifying wind energy turbine set electricity
Transient overvoltage of the gas system in the case of combined floodgate.
Step 144：When wind energy turbine set is in different network structures, each open circuit of simplified wind energy turbine set electrical system is respectively provided with
Lock cut by device, and emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut.
When lock overvoltage is cut in emulation, wind energy turbine set is set again by simulation software and is in different network structures.In wind-powered electricity generation
When field is in different network structures, it is respectively provided with each chopper of simplified wind energy turbine set electrical system and cuts lock.The chopper for cutting lock is same
Sample may include land substation breakers, maritime transformer station chopper, main transformer high-pressure side chopper, main transformer low-pressure side
At least one in chopper and most long feeder breaker.It is appreciated that the chopper for cutting lock may also include other kinds of breaking
Road device.Emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut, and just can obtain simplifying wind
Transient overvoltage of the electric field electrical system in the case of lock is cut.
Step 146：When wind energy turbine set is in different network structures, each failure of simplified wind energy turbine set electrical system is respectively provided with
Point is short-circuited, and emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system under short circuit fault condition.
During artificial short-circuits failure, wind energy turbine set is arranged by simulation software and is in different network structures.Tie in heterogeneous networks
It is respectively provided with each trouble point to be short-circuited under structure, trouble point specifically may include that land transformer station, maritime transformer station, main transformer are high
At least one in the generator terminal high voltage side of transformer of pressure side, main transformer low-pressure side, most long current collection bus and most long feeder line end points,
It is appreciated that trouble point may also include other types trouble point.The simplified wind energy turbine set electrical system of emulation is under short circuit fault condition
Transient overvoltage waveform and amplitude, just can obtain simplifying transient state of the wind energy turbine set electrical system under short circuit fault condition excessively electric
Pressure.
It should be noted that emulate closing overvoltage, cut lock overvoltage and the sequencing of short trouble overvoltage not
Uniquely, arbitrarily can upset.
Step S160：In the case of simplifying transient overvoltage of the wind energy turbine set electrical system in the case of combined floodgate, cutting lock
Transient overvoltage under transient overvoltage and short circuit fault condition, obtains the maximum transient overvoltage of marine wind electric field electrical system
And output result.
Be simplified wind energy turbine set electrical system closing a floodgate, cut transient overvoltage under three kinds of operating modes of lock and short trouble it
Afterwards, the maximum under three kinds of operating modes in transient overvoltage is obtained, as the maximum transient overvoltage of marine wind electric field electrical system.
The concrete form exported as a result by the maximum transient overvoltage of marine wind electric field electrical system is not unique, Ke Yishi
Export and shown to display, or exported and stored to memorizer.
In one embodiment, step S160 includes step 162 and step 164.
Step 162：Obtain respectively and simplify wind energy turbine set electrical system in the case of combined floodgate, in the case of cutting lock and short trouble feelings
Maximum transient overvoltage under condition.
According to the simplified wind energy turbine set electrical system that obtains of emulation in the case of combined floodgate, in the case of cutting lock and short circuit fault condition
Under transient overvoltage, can extracting directly corresponded in the case of maximum transient overvoltage.
Step 164：The simplified wind energy turbine set electrical system of acquisition is in the case of combined floodgate, in the case of cutting lock and under short circuit fault condition
Maximum transient overvoltage in maximum, obtain marine wind electric field electrical system maximum transient overvoltage and output result.
Using the maximum of the maximum transient overvoltage of three kinds of operating modes of lock and short trouble of closing a floodgate, cut as marine wind electric field electricity
The maximum transient overvoltage output result of gas system.
The maximum transient overvoltage under different operating modes is first extracted in the present embodiment, then compares that to extract three maximums for obtaining temporary
State overvoltage, using maximum therein as marine wind electric field electrical system maximum transient overvoltage, is carried out to transient overvoltage
Grading extraction, simple and efficient to handle.It is appreciated that in other embodiments, or directly from the transient state mistake of three kinds of operating modes
Maximum is obtained in voltage, as the maximum transient overvoltage of marine wind electric field electrical system.
Above-mentioned marine wind electric field electrical system maximum transient Over-voltage Analysis method, is being closed by comprehensive marine wind electric field
Lock, lock and the transient overvoltage under short circuit fault condition is cut, obtain the maximum of marine wind electric field electrical system under three kinds of operating modes temporarily
State overvoltage, so as to the Insulation Coordination for electrical system, lectotype selection etc. provide reference, improves wind energy turbine set safe and reliable to operation
Property.
For ease of more fully understanding above-mentioned marine wind electric field electrical system maximum transient Over-voltage Analysis method, with reference to
Specific embodiment carries out detailed explanation.
1) PSCAD/EMTDC the Summary of Power System Simulation Software is adopted, for current Large Scale Wind Farm Integration frequently with flat
The situation of line mode layout blower fan, sets up phantom as shown in Figure 2.Phantom includes but is not limited to equivalent source, electricity
Cable, chopper, transformator, bus and blower fan etc., equivalent source connect chopper, transformator and blower fan by cable and bus.
Specifically, equivalent source 21 is 220kV power supplys, and bus includes bus 22, bus 23, bus 24, bus 25, bus 26 and bus
27, transformator includes transformator GT1HV and transformator GT2HV.Additionally, phantom also include shunt reactor R1 to R5 and
Connection SVGS1, switch CBR1 to switch CBR5, switch CBS1 to switch CBS4, switch CBG1, switch CBA, switch CBB, switch
CBC, switch CBD, switch CBE, switch CBF, switch CBG and switch CBA3.
Wherein, external electrical network is equivalent with ideal source,；Cable section using PSCAD/EMTDC carry based on J.Marti
Frequency dependence (phase place) circuit model of the consideration frequency characteristic of proposition.Transformator, chopper and bus adopt PSCAD/
EMTDC is carried out equivalent from band model, blower fan by current source.
2) wind energy turbine set is respectively provided with heterogeneous networks structure, various situations occur under heterogeneous networks structure.
1. combined floodgate situation.Chopper CBA, CBB, CBC, CBD original state closure is set, and chopper CBE disconnects, through 1s
Left and right voltage, electric current and power etc. all reach steady statue.Chopper CBS1 closures (step down side) is set, emulate
To closing overvoltage waveform and overvoltage value, waveform is as shown in Figure 3.
Constantly change position and combined floodgate angle that the network structure of wind energy turbine set, breaker closing occur point, so as to obtain
Overvoltage maximum in the case of wind energy turbine set combined floodgate.
2. lock situation is cut.Emulation wind energy turbine set is all reached through 1s or so voltages, electric current and power etc. in full-load output state
Arrive steady statue.Arrange main transformer low pressure side chopper CBS1 to disconnect, emulation obtains cutting lock over-voltage waveform and overvoltage
Value, waveform is as shown in Figure 4.
Constantly change wind farm network structure and chopper cuts the position that lock occurs point, lock situation is cut so as to obtain wind energy turbine set
Under overvoltage maximum.
3. short circuit fault condition.Emulation wind energy turbine set is in full-load output state, through 1s or so voltages, electric current and power etc.
Steady statue is all reached.Failure is set point occurs for, at most long current collection bus, breaking down when simulation time is 1s, failure classes
Type is single-phase short circuit, and emulation obtains false voltage waveform and overvoltage value, and waveform is as shown in Figure 5.
Constantly change position, short trouble type and short trouble that wind farm network structure, short trouble occur point
Angle, so that obtain the overvoltage maximum under wind energy turbine set short trouble.
3) analytical procedure 2) in conclusion, contrast three kinds of operating modes under transient overvoltage maximum, so as to obtain sea turn
Electric field electrical system maximum transient overvoltage.
In one embodiment, a kind of marine wind electric field electrical system maximum transient Over-voltage Analysis system, such as Fig. 6 institutes
Show, module 120, system transient modelling over-voltage simulation module 140 and maximum transient overvoltage is set up including system simulation model and obtained
Module 160.
System simulation model sets up module 120 for obtaining the structured data of marine wind electric field electrical system, and according to knot
Structure data are emulated, and set up the simplified wind energy turbine set electrical system with marine wind electric field electrical system as object of study.
The concrete composition of wind energy turbine set and layout type be not unique, and structured data specifically may include that marine wind electric field is electric
The data such as the annexation in system between the parameter of each element and element.PSCAD/EMTDC electromagnetic transient simulations can be passed through soft
Part, to having the Wind turbines and the wind energy turbine set of layout in parallel that connect with chain topology, sets up with whole wind-powered electricity generation
Field electrical system is the phantom of object of study, is simplified wind energy turbine set electrical system.By determining each unit in electrical system
Part calculation method of parameters, arranges the parameter of each element in simulation software, simulates the ruuning situation of actual wind energy turbine set.Simplify wind-powered electricity generation
Electrical system specifically may include equivalent source, cable, chopper, transformator, bus and blower fan, equivalent source by cable and
Bus connection chopper, transformator and blower fan.It is appreciated that simplifying wind energy turbine set electrical system may also include other types element.
System transient modelling over-voltage simulation module 140 is for the simplified wind energy turbine set electrical system of emulation respectively in the case of combined floodgate
Transient overvoltage, cut transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock.
By simulation software emulate respectively simplified wind energy turbine set electrical system in combined floodgate situation, cut lock situation and short trouble feelings
Transient overvoltage under condition.Specifically, in one embodiment, system transient modelling over-voltage simulation module 140 includes the first emulation
Unit, the second simulation unit and the 3rd simulation unit.
First simulation unit is used for when wind energy turbine set is in different network structures, and being respectively provided with simplified wind energy turbine set is electrically
Unite each breaker closing, emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of combined floodgate.
During emulation closing overvoltage, wind energy turbine set can be arranged by simulation software and be in different network structures.In wind energy turbine set
When being in different network structures, each breaker closing of simplified wind energy turbine set electrical system is respectively provided with.The chopper of combined floodgate includes
Land substation breakers, maritime transformer station chopper, main transformer high-pressure side chopper, main transformer low-pressure side chopper and
At least one in most long feeder breaker.It is appreciated that the chopper for closing a floodgate may also include other kinds of chopper.Pass through
Emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of combined floodgate, just can obtain simplifying wind energy turbine set electricity
Transient overvoltage of the gas system in the case of combined floodgate.
Second simulation unit is used for when wind energy turbine set is in different network structures, and being respectively provided with simplified wind energy turbine set is electrically
Each chopper of uniting cuts lock, and emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut.
When lock overvoltage is cut in emulation, wind energy turbine set is set again by simulation software and is in different network structures.In wind-powered electricity generation
When field is in different network structures, it is respectively provided with each chopper of simplified wind energy turbine set electrical system and cuts lock.The chopper for cutting lock is same
Sample may include land substation breakers, maritime transformer station chopper, main transformer high-pressure side chopper, main transformer low-pressure side
At least one in chopper and most long feeder breaker.It is appreciated that the chopper for cutting lock may also include other kinds of breaking
Road device.Emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut, and just can obtain simplifying wind
Transient overvoltage of the electric field electrical system in the case of lock is cut.
3rd simulation unit is used for when wind energy turbine set is in different network structures, and being respectively provided with simplified wind energy turbine set is electrically
Each trouble point of uniting is short-circuited, and emulation simplifies transient overvoltage waveform and width of the wind energy turbine set electrical system under short circuit fault condition
Value.
During artificial short-circuits failure, wind energy turbine set is arranged by simulation software and is in different network structures.Tie in heterogeneous networks
It is respectively provided with each trouble point to be short-circuited under structure, trouble point specifically may include that land transformer station, maritime transformer station, main transformer are high
At least one in the generator terminal high voltage side of transformer of pressure side, main transformer low-pressure side, most long current collection bus and most long feeder line end points,
It is appreciated that trouble point may also include other types trouble point.The simplified wind energy turbine set electrical system of emulation is under short circuit fault condition
Transient overvoltage waveform and amplitude, just can obtain simplifying transient state of the wind energy turbine set electrical system under short circuit fault condition excessively electric
Pressure.
It should be noted that emulate closing overvoltage, cut lock overvoltage and the sequencing of short trouble overvoltage not
Uniquely, arbitrarily can upset.
Maximum transient overvoltage acquisition module 160 is used for according to simplified transient state of the wind energy turbine set electrical system in the case of combined floodgate
Overvoltage, transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock is cut, obtain marine wind electric field electric
The maximum transient overvoltage output result of system.
Be simplified wind energy turbine set electrical system closing a floodgate, cut transient overvoltage under three kinds of operating modes of lock and short trouble it
Afterwards, the maximum under three kinds of operating modes in transient overvoltage is obtained, as the maximum transient overvoltage of marine wind electric field electrical system.
The concrete form exported as a result by the maximum transient overvoltage of marine wind electric field electrical system is not unique, Ke Yishi
Export and shown to display, or exported and stored to memorizer.
In one embodiment, maximum transient overvoltage acquisition module 160 include the first transient overvoltage acquiring unit and
Second transient overvoltage acquiring unit.
First transient overvoltage acquiring unit be used for respectively obtain simplify wind energy turbine set electrical system in the case of combined floodgate, cut lock
In the case of and short circuit fault condition under maximum transient overvoltage.
According to the simplified wind energy turbine set electrical system that obtains of emulation in the case of combined floodgate, in the case of cutting lock and short circuit fault condition
Under transient overvoltage, can extracting directly corresponded in the case of maximum transient overvoltage.
Second transient overvoltage acquiring unit, for obtain simplified wind energy turbine set electrical system in the case of combined floodgate, cut lock feelings
The maximum in maximum transient overvoltage under condition and under short circuit fault condition, obtains the maximum of marine wind electric field electrical system temporarily
State overvoltage output result.
Using the maximum of the maximum transient overvoltage of three kinds of operating modes of lock and short trouble of closing a floodgate, cut as marine wind electric field electricity
The maximum transient overvoltage output result of gas system.
The maximum transient overvoltage under different operating modes is first extracted in the present embodiment, then compares that to extract three maximums for obtaining temporary
State overvoltage, using maximum therein as marine wind electric field electrical system maximum transient overvoltage.Transient overvoltage is carried out
Grading extraction, simple and efficient to handle.It is appreciated that in other embodiments, or directly from the transient state mistake of three kinds of operating modes
Maximum is obtained in voltage, as the maximum transient overvoltage of marine wind electric field electrical system.
Above-mentioned marine wind electric field electrical system maximum transient Over-voltage Analysis system, is being closed by comprehensive marine wind electric field
Lock, lock and the transient overvoltage under short circuit fault condition is cut, obtain the maximum of marine wind electric field electrical system under three kinds of operating modes temporarily
State overvoltage, so as to the Insulation Coordination for electrical system, lectotype selection etc. provide reference, improves wind energy turbine set safe and reliable to operation
Property.
Each technical characteristic of embodiment described above arbitrarily can be combined, for making description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of marine wind electric field electrical system maximum transient Over-voltage Analysis method, it is characterised in that comprise the following steps：
The structured data of marine wind electric field electrical system is obtained, and is emulated according to the structured data, set up with sea turn
Simplified wind energy turbine set electrical system of the electric field electrical system for object of study；
Emulate transient overvoltage of the simplified wind energy turbine set electrical system in the case of combined floodgate respectively, cut transient state mistake in the case of lock
Transient overvoltage under voltage and short circuit fault condition；
Transient overvoltage according to the simplified wind energy turbine set electrical system in the case of combined floodgate, cut transient overvoltage in the case of lock
With the transient overvoltage under short circuit fault condition, obtain the maximum transient overvoltage of the marine wind electric field electrical system and export
As a result.
2. marine wind electric field electrical system maximum transient Over-voltage Analysis method according to claim 1, it is characterised in that
The simplified wind energy turbine set electrical system includes equivalent source, cable, chopper, transformator, bus and blower fan, the equivalent source
The chopper, the transformator and the blower fan are connected by the cable and the bus.
3. marine wind electric field electrical system maximum transient Over-voltage Analysis method according to claim 1, it is characterised in that
The transient overvoltage that the simplified wind energy turbine set electrical system is emulated respectively in the case of combined floodgate, cut transient state mistake in the case of lock
The step of transient overvoltage under voltage and short circuit fault condition, comprise the following steps：
When wind energy turbine set is in different network structures, each breaker closing of the simplified wind energy turbine set electrical system is respectively provided with,
Emulate transient overvoltage waveform and amplitude of the simplified wind energy turbine set electrical system in the case of combined floodgate；
When wind energy turbine set is in different network structures, it is respectively provided with each chopper of the simplified wind energy turbine set electrical system and cuts lock,
Emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut；
When wind energy turbine set is in different network structures, each trouble point generation of the simplified wind energy turbine set electrical system is respectively provided with short
Road, emulation simplify transient overvoltage waveform and amplitude of the wind energy turbine set electrical system under short circuit fault condition.
4. marine wind electric field electrical system maximum transient Over-voltage Analysis method according to claim 3, it is characterised in that
The chopper includes land substation breakers, maritime transformer station chopper, main transformer high-pressure side chopper, main transformer
At least one in low-pressure side chopper and most long feeder breaker.
5. marine wind electric field electrical system maximum transient Over-voltage Analysis method according to claim 3, it is characterised in that
The trouble point includes land transformer station, maritime transformer station, main transformer high-pressure side, main transformer low-pressure side, the most long collection goddess of lightning
At least one in the generator terminal high voltage side of transformer of line and most long feeder line end points.
6. marine wind electric field electrical system maximum transient Over-voltage Analysis method according to claim 1, it is characterised in that
The transient overvoltage according to the simplified wind energy turbine set electrical system in the case of combined floodgate, cut transient overvoltage in the case of lock
With the transient overvoltage under short circuit fault condition, obtain the maximum transient overvoltage of the marine wind electric field electrical system and export
As a result the step of, comprise the following steps：
The simplified wind energy turbine set electrical system is obtained respectively in the case of combined floodgate, in the case of cutting lock and under short circuit fault condition most
Big transient overvoltage；
Obtain maximum of the simplified wind energy turbine set electrical system in the case of combined floodgate, in the case of cutting lock and under short circuit fault condition temporarily
Maximum in state overvoltage, obtains the maximum transient overvoltage output result of the marine wind electric field electrical system.
7. a kind of marine wind electric field electrical system maximum transient Over-voltage Analysis system, it is characterised in that include：
System simulation model sets up module, for obtaining the structured data of marine wind electric field electrical system, and according to the structure
Data are emulated, and set up the simplified wind energy turbine set electrical system with marine wind electric field electrical system as object of study；
System transient modelling over-voltage simulation module, temporary in the case of combined floodgate for emulating the simplified wind energy turbine set electrical system respectively
State overvoltage, cut transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock；
Maximum transient overvoltage acquisition module, for the transient state mistake according to the simplified wind energy turbine set electrical system in the case of combined floodgate
Voltage, transient overvoltage and the transient overvoltage under short circuit fault condition in the case of lock is cut, obtain the marine wind electric field electricity
The maximum transient overvoltage output result of gas system.
8. marine wind electric field electrical system maximum transient Over-voltage Analysis system according to claim 7, it is characterised in that
The simplified wind energy turbine set electrical system includes equivalent source, cable, chopper, transformator, bus and blower fan, the equivalent source
The chopper, the transformator and the blower fan are connected by the cable and the bus.
9. marine wind electric field electrical system maximum transient Over-voltage Analysis system according to claim 7, it is characterised in that
The system transient modelling over-voltage simulation module includes：
First simulation unit, for when wind energy turbine set is in different network structures, being respectively provided with the simplified wind energy turbine set electric
The each breaker closing of system, emulates transient overvoltage waveform and width of the simplified wind energy turbine set electrical system in the case of combined floodgate
Value；
Second simulation unit, for when wind energy turbine set is in different network structures, being respectively provided with the simplified wind energy turbine set electric
The each chopper of system cuts lock, and emulation simplifies transient overvoltage waveform and amplitude of the wind energy turbine set electrical system in the case of lock is cut；
3rd simulation unit, for when wind energy turbine set is in different network structures, being respectively provided with the simplified wind energy turbine set electric
The each trouble point of system is short-circuited, emulation simplify transient overvoltage waveform of the wind energy turbine set electrical system under short circuit fault condition and
Amplitude.
10. marine wind electric field electrical system maximum transient Over-voltage Analysis system according to claim 7, its feature exist
In the maximum transient overvoltage acquisition module includes：
First transient overvoltage acquiring unit, for obtain respectively the simplified wind energy turbine set electrical system in the case of combined floodgate, cut
Maximum transient overvoltage in the case of lock and under short circuit fault condition；
Second transient overvoltage acquiring unit, for obtain the simplified wind energy turbine set electrical system in the case of combined floodgate, cut lock feelings
The maximum in maximum transient overvoltage under condition and under short circuit fault condition, obtains the marine wind electric field electrical system most
Big transient overvoltage output result.
Priority Applications (2)
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Cited By (4)
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| WO2018072427A1 (en) * | 2016-10-18 | 2018-04-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum transient overvoltage analysis method and system for offshore wind plant electrical system |
| CN108233371A (en) * | 2018-03-21 | 2018-06-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Marine wind electric field combines hair electric power system with island microgrid |
| CN109558670A (en) * | 2018-11-27 | 2019-04-02 | 电子科技大学中山学院 | Offshore wind farm cable layout planning method based on mixed neighborhood-variable bat algorithm |
| CN115513989A (en) * | 2022-10-29 | 2022-12-23 | 华北电力大学 | Wind-fire bundling sending end system transient overvoltage calculation method, system and product |
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| CN109376392B (en) * | 2018-09-21 | 2022-11-18 | 全球能源互联网研究院有限公司 | Overvoltage calculation method and system for series compensation device |
| CN109815593B (en) * | 2019-01-25 | 2023-07-25 | 周耘立 | Analysis method for coupling propagation mechanism of successive faults of distribution network |
| CN111355253B (en) * | 2019-11-26 | 2022-12-09 | 中国电力科学研究院有限公司 | System and method for determining transient overvoltage of sending end of multi-direct-current sending system |
| CN118013862B (en) * | 2024-04-09 | 2024-07-05 | 湖南大学 | Wind power plant short-term voltage stability simulation model construction, evaluation and monitoring method |
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| WO2018072427A1 (en) * | 2016-10-18 | 2018-04-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum transient overvoltage analysis method and system for offshore wind plant electrical system |
| CN108233371A (en) * | 2018-03-21 | 2018-06-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Marine wind electric field combines hair electric power system with island microgrid |
| CN109558670A (en) * | 2018-11-27 | 2019-04-02 | 电子科技大学中山学院 | Offshore wind farm cable layout planning method based on mixed neighborhood-variable bat algorithm |
| CN109558670B (en) * | 2018-11-27 | 2019-10-29 | 电子科技大学中山学院 | Offshore wind farm cable layout planning method based on mixed neighborhood-variable bat algorithm |
| CN115513989A (en) * | 2022-10-29 | 2022-12-23 | 华北电力大学 | Wind-fire bundling sending end system transient overvoltage calculation method, system and product |
| CN115513989B (en) * | 2022-10-29 | 2023-06-30 | 华北电力大学 | Transient overvoltage calculation method, system and product of wind-fire bundling and transmitting end system |
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