CN106026166A - Reactive capacity detection method for new energy power station accessed to weak power grid - Google Patents
Reactive capacity detection method for new energy power station accessed to weak power grid Download PDFInfo
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Classifications
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- H02J3/386—
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1892—Arrangements for adjusting, eliminating or compensating reactive power in networks the arrangements being an integral part of the load, e.g. a motor, or of its control circuit
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- H02J3/383—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a reactive capacity detection method for a new energy power station accessed to a weak power grid. The method comprises steps that reactive capacity detection objects of the new energy power station are determined; reactive capacities of a wind turbine generator system current transformer/a photovoltaic grid connected inverter are detected; reactive capacity of a reactive power compensator of the new energy power station is detected; and the reactive capacity of the new energy power station is determined. According to the method, the reactive capacities of the reactive power compensator and the wind turbine generator system current transformer/the photovoltaic grid connected inverter in a permitted voltage operation scope are detected, including power dispatching requirements or the historical data, and effective station reactive capacity detection is guaranteed to develop according to related standards. Through adjusting different types of reactive power source operation modes in the new energy power station, effective reactive capacity detection on the new energy power station at a weak rack region can be realized. The method is feasible for an electric power system scheduling mechanism, a wind power field service provider and related detection mechanisms.
Description
Technical field
The invention belongs to new forms of energy access and control technical field, be specifically related to a kind of new energy power station accessing light current net
Reactive capability detection method.
Background technology
According to the requirement of Energy Development in China Strategic Action Plan, account for primary energy to the non-fossil energy of the year two thousand twenty China and disappear
Expense reaches 15% than important, the consumption proportion of the regenerative resources such as wind-powered electricity generation, solar energy, geothermal energy will be significantly increased.Along with China
New forms of energy installed capacity accountings in electrical network such as wind-powered electricity generation/photovoltaic are more and more higher, and new energy power station wind-powered electricity generation/grid-connected operation is to electricity
The impact of net will be more and more obvious, and new energy power station the stability of site (output convergent point) voltage and adjustability are related to electricity
The safe and stable operation of net, therefore accurately the reactive capability of test new energy power station is just particularly important.
By Field Research and actual test, find that current China deposits during the reactive capability of new energy power station detects
In problem, it is difficult to efficiently accomplish this Detection task.
Owing to new energy power station is in electrical network end more, voltage pulsation is big, for making and site (output convergent point) voltage fortune
Row, in the range of rationally (electric power system dispatching institution requests), frequently results in the detection that cannot effectively carry out reactive capability.Such as,
Certain new energy power station is in the case of all reactive power sources are idle, and site working voltage may be up to 40kV；For ensureing electrical network
Voltage operates in relatively zone of reasonableness, and this new energy power station supporting reactive power compensator longtime running is at perceptual idle output state
Under, grid-connected point voltage just can be made to be maintained between 37-38kV；In this state, very difficult have according to tradition AVC control method
The capacity of effect detection reactive power source.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the present invention provides a kind of new energy power station of light current net that accesses without power capacity
Quantity measuring method, detection new energy power station reactive power compensator and wind power unit converter/photovoltaic combining inverter are allowing electricity
The reactive capability of (electric power system dispatching institution requests or historical data) in pressure range of operation, it is ensured that carry out according to relevant criterion and have
The station reactive capability detection of effect.By the method for operation of dissimilar reactive power source in adjustment new energy power station, it is achieved at net
The effective detection to new energy power station reactive capability of the frame weakness area.For power scheduling department, wind energy turbine set operator and relevant inspection
Survey mechanism and a kind of practicable new energy power station reactive capability detection method is provided.
In order to realize foregoing invention purpose, the present invention adopts the following technical scheme that:
The present invention provides a kind of new energy power station reactive capability detection method accessing light current net, comprises the following steps:
Step 1: determine that new energy power station reactive capability detects object；
Step 2: the reactive capability of detection wind power unit converter/photovoltaic combining inverter；
Step 3: the reactive capability of detection new energy power station reactive power compensator；
Step 4: determine the reactive capability of new energy power station.
In described step 1, new energy power station reactive capability detection object include wind energy turbine set reactive power source and photovoltaic plant without
Merit power supply.
Described wind energy turbine set reactive power source includes wind power unit converter and Reactive Compensation in Wind Farm device；
Described photo-voltaic power generation station reactive power source includes photovoltaic combining inverter and photo-voltaic power generation station reactive power compensator.
Described step 2 comprises the following steps:
Step 2-1: determine new energy power station grid-connected point voltage range of operation, and set/low-voltage protection definite value；
Step 2-2: new energy power station reactive power compensator is arranged by AVC system or reactive power compensator control system
For permanent idle control mode；
Step 2-3: by AVC system or EMS system by the reactive power of wind power unit converter/photovoltaic combining inverter
Output is progressively arranged to 0Mvar；
Step 2-4: adjust the reactive power setting value of new energy power station reactive power compensator, by new energy power station site
Control of Voltage is in the range of operation required；
Step 2-5:AVC system or EMS system issue the first control instruction, are become by Wind turbines according to the first control instruction
Stream device/photovoltaic combining inverter method of operation is set to constant voltage control mode, and by wind power unit converter/grid-connected inverse
The target voltage pursuit gain becoming device is set to receive AVC system or the set-point of EMS system；
Step 2-6:AVC system or EMS system issue first object instruction, test wind power unit converter/grid-connected
The reactive capability of inverter.
In described step 3, new energy power station reactive power compensator includes Reactive Compensation in Wind Farm device and photo-voltaic power generation station
Reactive power compensator.
Described step 3 comprises the following steps:
Step 3-1: determine new energy power station grid-connected point voltage range of operation, and set/low-voltage protection definite value；
Step 3-2: wind power unit converter/photovoltaic combining inverter method of operation is set by AVC system or EMS system
It is set to permanent idle control mode；
Step 3-3: by AVC system or reactive power compensator control system, by new energy power station reactive power compensator
Reactive power output is progressively arranged to 0Mvar；
Step 3-4: by AVC system or the idle merit of EMS system call interception wind power unit converter/photovoltaic combining inverter
Rate setting value, makes the grid-connected point voltage of new energy power station control in the range of operation required；
Step 3-5: issue the second control instruction by AVC system or reactive power compensator control system, according to the second control
The new energy power station reactive power compensator method of operation is set to constant voltage control mode by system instruction, and new energy power station is idle
The target voltage pursuit gain of compensation device is set to receive AVC system or the set-point of EMS system；
Step 3-6:AVC system or reactive power compensator control system issue the second target instruction target word, test new energy power station
The reactive capability of reactive power compensator.
According to new energy power station operating experience and combine electric power system dispatching mechanism point voltage grid-connected to new energy power station
Service requirement, determines the busbar voltage range of operation of new energy power station；Set collection electric line, new energy power station reactive power compensator
With the mistake/low-voltage protection definite value of wind power unit converter, or set collection electric line, new energy power station reactive power compensator and light
Mistake/low-voltage protection the definite value of volt combining inverter.
If new energy power station grid-connected point voltage reference value is Uref, have:
Uref=(Umax+Umin)/2 (1)
Wherein, UmaxRepresent that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows
Run higher limit, UminRepresent that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows fortune
Row lower limit.
The instruction of described first object and the second target instruction target word all include that electric power system dispatching mechanism or new energy power station are run
The grid-connected point voltage that experience is given allows to run higher limit UmaxGive with electric power system dispatching mechanism or new energy power station operating experience
The grid-connected point voltage gone out allows to run lower limit Umin。
In described step 3, the reactive capability of new energy power station includes new energy power station total capacitive reactive power capacity QcWith new energy
Power station, source total capacitive reactive power capacity QL, QcAnd QLIt is expressed as:
Qc=Qc1+Qc2 (2)
QL=QL1+QL2 (3)
Wherein, Qc1Represent new forms of energy electric station grid connection point when wind power unit converter/photovoltaic combining inverter is individually tested
Capacitive reactive power capacity, Qc2Represent the capacitive reactive power of new forms of energy electric station grid connection point when new energy power station reactive power compensator is individually tested
Capacity, QL1Represent that when wind power unit converter/photovoltaic combining inverter is individually tested, the perception of new forms of energy electric station grid connection point is idle
Capacity, QL2Represent the perceptual reactive capability of new forms of energy electric station grid connection point when new energy power station reactive power compensator is individually tested.
Compared with immediate prior art, the technical scheme that the present invention provides has the advantages that
(1) the new energy power station reactive capability detection method accessing light current net that the present invention provides is easy to execute-in-place, energy
Enough accurately measure the real reactive capability of new energy power station in electric power system dispatching institution requests voltage range of operation, with
Time the influence degree of electrical network is down to minimum；
(2) the new energy power station reactive capability detection method accessing light current net that the present invention provides, solves Net Frame of Electric Network
The new energy power station in weak area cannot in reasonable voltage range of operation (electric power system dispatching mechanism set-point or operating experience
Data) carry out effective reactive capability test problems.
Accompanying drawing explanation
Fig. 1 is new energy power station reactive power/voltage control theory diagram in the embodiment of the present invention；
Fig. 2 is the reactive capability overhaul flow chart of wind power unit converter/photovoltaic combining inverter in the embodiment of the present invention；
Fig. 3 is the reactive capability overhaul flow chart of new energy power station reactive power compensator in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
The new energy power station reactive capability detection method accessing light current net that the present invention provides, first according to local electrical network,
The ruuning situation of new energy power station, in conjunction with electric power system dispatching institution requests, adjusts new energy power station reactive power compensator, wind-powered electricity generation
Unit current transformer/photovoltaic combining inverter and the protection seting value of collection electric line, in case can quickly, accurately when voltage out-of-limit occurs
Excision relevant device or circuit；Secondly, check that new energy power station AVC system runs the communication between control ability, and each device
The most normal；Finally should check reactive power compensator backstage and the control of EMS system and service ability.Concrete scheme is as follows:
By adjusting new energy power station reactive power compensator and the operation side of wind power unit converter/photovoltaic combining inverter
Formula so that it is operate under different operating mode in the same time, increases grid-connected point voltage adjustable range, reaches effectively to measure nothing
The purpose of power capacity amount.New energy power station reactive power source control principle block diagram is as shown in Figure 1.
The new energy power station reactive capability detection method accessing light current net that the present invention provides comprises the following steps:
Step 1: determine that new energy power station reactive capability detects object；
Step 2: the reactive capability of detection wind power unit converter/photovoltaic combining inverter；
Step 3: the reactive capability of detection new energy power station reactive power compensator；
Step 4: determine the reactive capability of new energy power station.
New energy power station reactive capability detection object includes wind energy turbine set reactive power source and photovoltaic plant reactive power source.Country's mark
Quasi-GB/T19963-2011 " wind energy turbine set accesses power system regulation " and standard GB/T/T 19964-2012 " photo-voltaic power generation station
Access power system technology regulation ", the reactive capability of wind energy turbine set/photo-voltaic power generation station is made that clear stipulaties, wherein wind energy turbine set
Reactive power source includes wind power unit converter and Reactive Compensation in Wind Farm device；Photo-voltaic power generation station reactive power source includes grid-connected
Inverter and photo-voltaic power generation station reactive power compensator.
Such as Fig. 2, described step 2 comprises the following steps:
Step 2-1: determine new energy power station site (output convergent point) voltage range of operation, and set/under-voltage
Protection definite value；
Step 2-2: by AVC (automatism voltage control Automatic Voltage Control) system or reactive-load compensation
New energy power station reactive power compensator is set to permanent idle control mode by apparatus control system；
Step 2-3: by AVC system or EMS (energy management platform) system by wind power unit converter/grid-connected inverse
The reactive power output becoming device is progressively arranged to 0Mvar；
Step 2-4: adjust the reactive power setting value of new energy power station reactive power compensator, by new energy power station site
(output convergent point) Control of Voltage is in the range of operation required；
Step 2-5:AVC system or EMS system issue the first control instruction, are become by Wind turbines according to the first control instruction
Stream device/photovoltaic combining inverter is set to constant voltage control mode, and by the mesh of wind power unit converter/photovoltaic combining inverter
Mark voltage-tracing value is set to receive AVC system or the set-point of EMS system；
Step 2-6:AVC system or EMS system issue first object instruction, test wind power unit converter/grid-connected
The reactive capability of inverter.
In described step 3, new energy power station reactive power compensator includes Reactive Compensation in Wind Farm device and photo-voltaic power generation station
Reactive power compensator.
Such as Fig. 3, described step 3 comprises the following steps:
Step 3-1: determine new energy power station site (output convergent point) voltage range of operation, and set/under-voltage
Protection definite value；
Step 3-2: wind power unit converter/photovoltaic combining inverter is set to permanent nothing by AVC system or EMS system
Merit control mode；
Step 3-3: by AVC system or reactive power compensator control system, by new energy power station reactive power compensator
Reactive power output is progressively arranged to 0Mvar；
Step 3-4: by AVC system or the idle merit of EMS system call interception wind power unit converter/photovoltaic combining inverter
Rate setting value, makes new energy power station site (output convergent point) Control of Voltage in the range of operation required；
Step 3-5: issue the second control instruction by AVC system or reactive power compensator control system, according to the second control
New energy power station reactive power compensator is set to constant voltage control mode by system instruction, and by new energy power station reactive power compensator
Target voltage pursuit gain be set to receive AVC system or the set-point of EMS system；
Step 3-6:AVC system or reactive power compensator control system issue the second target instruction target word, test new energy power station
The reactive capability of reactive power compensator.
According to new energy power station operating experience and combine electric power system dispatching mechanism (output converges to new energy power station site
Accumulation) service requirement of voltage, determine new energy power station site (output convergent point) voltage range of operation；Set collection electric wire
The mistake of road, new energy power station reactive power compensator and wind power unit converter/low-voltage protection definite value, or setting collection electric line,
The mistake of new energy power station reactive power compensator and photovoltaic combining inverter/low-voltage protection definite value.
If new energy power station site (output convergent point) voltage reference value are Uref, have:
Uref=(Umax+Umin)/2 (1)
Wherein, UmaxRepresent that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows
Run higher limit, UminRepresent that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows fortune
Row lower limit.
The instruction of described first object and the second target instruction target word all include that electric power system dispatching mechanism or new energy power station are run
The grid-connected point voltage that experience is given allows to run higher limit UmaxGive with electric power system dispatching mechanism or new energy power station operating experience
The grid-connected point voltage gone out allows to run lower limit Umin。
In described step 3, the reactive capability of new energy power station includes new energy power station total capacitive reactive power capacity QcWith new energy
Power station, source total capacitive reactive power capacity QL, QcAnd QLIt is expressed as:
Qc=Qc1+Qc2 (2)
QL=QL1+QL2 (3)
Wherein, Qc1Represent that when wind power unit converter/photovoltaic combining inverter is individually tested, new forms of energy electric station grid connection point is (defeated
Go out convergent point) capacitive reactive power capacity, Qc2Represent new forms of energy electric station grid connection when new energy power station reactive power compensator is individually tested
The capacitive reactive power capacity of point (output convergent point), QL1Represent that wind power unit converter/photovoltaic combining inverter is individually tested stylish
The perceptual reactive capability of energy electric station grid connection point (output convergent point), QL2Represent that new energy power station reactive power compensator is individually tested
Time new forms of energy electric station grid connection point (output convergent point) perceptual reactive capability.
Finally should be noted that: above example only in order to illustrate that technical scheme is not intended to limit, institute
The those of ordinary skill in genus field still the detailed description of the invention of the present invention can be modified with reference to above-described embodiment or
Equivalent, these are without departing from any amendment of spirit and scope of the invention or equivalent, all await the reply in application this
Within bright claims.
Claims (10)
1. the new energy power station reactive capability detection method accessing light current net, it is characterised in that: described method includes following
Step:
Step 1: determine that new energy power station reactive capability detects object；
Step 2: the reactive capability of detection wind power unit converter/photovoltaic combining inverter；
Step 3: the reactive capability of detection new energy power station reactive power compensator；
Step 4: determine the reactive capability of new energy power station.
The new energy power station reactive capability detection method of access light current net the most according to claim 1, it is characterised in that: institute
Stating in step 1, new energy power station reactive capability detection object includes wind energy turbine set reactive power source and photovoltaic plant reactive power source.
The new energy power station reactive capability detection method of access light current net the most according to claim 2, it is characterised in that: institute
State wind energy turbine set reactive power source and include wind power unit converter and Reactive Compensation in Wind Farm device；
Described photo-voltaic power generation station reactive power source includes photovoltaic combining inverter and photo-voltaic power generation station reactive power compensator.
The new energy power station reactive capability detection method of access light current net the most according to claim 3, it is characterised in that: institute
State step 2 to comprise the following steps:
Step 2-1: determine new energy power station grid-connected point voltage range of operation, and set/low-voltage protection definite value；
Step 2-2: new energy power station reactive power compensator is set to perseverance by AVC system or reactive power compensator control system
Idle control mode；
Step 2-3: the reactive power of wind power unit converter/photovoltaic combining inverter is exported by AVC system or EMS system
Progressively arrange to 0Mvar；
Step 2-4: adjust the reactive power setting value of new energy power station reactive power compensator, by grid-connected for new energy power station point voltage
Control in the range of operation required；
Step 2-5:AVC system or EMS system issue the first control instruction, according to the first control instruction by Wind turbines unsteady flow
Device/photovoltaic combining inverter method of operation is set to constant voltage control mode, and by wind power unit converter/photovoltaic grid-connected inversion
The target voltage pursuit gain of device is set to receive AVC system or the set-point of EMS system；
Step 2-6:AVC system or EMS system issue first object instruction, test wind power unit converter/photovoltaic grid-connected inversion
The reactive capability of device.
The new energy power station reactive capability detection method of access light current net the most according to claim 4, it is characterised in that: institute
Stating in step 3, new energy power station reactive power compensator includes Reactive Compensation in Wind Farm device and photo-voltaic power generation station reactive-load compensation dress
Put.
The new energy power station reactive capability detection method of access light current net the most according to claim 5, it is characterised in that: institute
State step 3 to comprise the following steps:
Step 3-1: determine new energy power station grid-connected point voltage range of operation, and set/low-voltage protection definite value；
Step 3-2: wind power unit converter/photovoltaic combining inverter is set to permanent without power control by AVC system or EMS system
Mode processed；
Step 3-3: by AVC system or reactive power compensator control system, idle by new energy power station reactive power compensator
Power output is progressively arranged to 0Mvar；
Step 3-4: set by the reactive power of AVC system or EMS system call interception wind power unit converter/photovoltaic combining inverter
Definite value, makes the grid-connected point voltage of new energy power station control in the range of operation required；
Step 3-5: issue the second control instruction by AVC system or reactive power compensator control system, controls to refer to according to second
The new energy power station reactive power compensator method of operation is set to constant voltage control mode by order, and by new energy power station reactive-load compensation
The target voltage pursuit gain of device is set to receive AVC system or the set-point of EMS system；
Step 3-6:AVC system or reactive power compensator control system issue the second target instruction target word, and test new energy power station is idle
The reactive capability of compensation device.
7., according to the new energy power station reactive capability detection method accessing light current net described in claim 4 or 6, its feature exists
In: according to new energy power station operating experience and combine electric power system dispatching mechanism point voltage grid-connected to new energy power station operation want
Ask, determine new energy power station grid-connected point voltage range of operation；Set collection electric line, new energy power station reactive power compensator and wind-powered electricity generation
The mistake of unit current transformer/low-voltage protection definite value, or set collection electric line, new energy power station reactive power compensator and grid-connected
The mistake of inverter/low-voltage protection definite value.
8., according to the new energy power station reactive capability detection method accessing light current net described in claim 4 or 6, its feature exists
In: set new energy power station grid-connected point voltage reference value as Uref, have:
Uref=(Umax+Umin)/2 (1)
Wherein, UmaxRepresent that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows to run
Higher limit, UminUnder representing that the grid-connected point voltage that electric power system dispatching mechanism or new energy power station operating experience provide allows to run
Limit value.
9., according to the new energy power station reactive capability detection method accessing light current net described in claim 4 or 6, its feature exists
In the instruction of: described first object and the second target instruction target word all include electric power system dispatching mechanism or new energy power station operating experience to
The grid-connected point voltage gone out allows to run higher limit UmaxBe given also with electric power system dispatching mechanism or new energy power station operating experience
Site voltage allows to run lower limit Umin。
The new energy power station reactive capability detection method of access light current net the most according to claim 6, it is characterised in that:
In described step 3, the reactive capability of new energy power station includes new energy power station total capacitive reactive power capacity QcTotal with new energy power station
Capacitive reactive power capacity QL, QcAnd QLIt is expressed as:
Qc=Qc1+Qc2 (2)
QL=QL1+QL2 (3)
Wherein, Qc1Represent the capacitive of new forms of energy electric station grid connection point when wind power unit converter/photovoltaic combining inverter is individually tested
Reactive capability, Qc2Represent that when new energy power station reactive power compensator is individually tested, the capacitive reactive power of new forms of energy electric station grid connection point holds
Amount, QL1Represent that when wind power unit converter/photovoltaic combining inverter is individually tested, the perception of new forms of energy electric station grid connection point is without power capacity
Amount, QL2Represent the perceptual reactive capability of new forms of energy electric station grid connection point when new energy power station reactive power compensator is individually tested.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038597A (en) * | 2018-08-17 | 2018-12-18 | 青海电研科技有限责任公司 | voltage fluctuation control method and its control device, computer readable storage medium |
| CN110907728A (en) * | 2019-12-02 | 2020-03-24 | 国网河北省电力有限公司电力科学研究院 | Improved wind power plant power control capability grid-connected detection method |
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