CN106340897B - A kind of determination method of power distribution network distributed generation resource allowed capacity - Google Patents
A kind of determination method of power distribution network distributed generation resource allowed capacity Download PDFInfo
- Publication number
- CN106340897B CN106340897B CN201610834780.9A CN201610834780A CN106340897B CN 106340897 B CN106340897 B CN 106340897B CN 201610834780 A CN201610834780 A CN 201610834780A CN 106340897 B CN106340897 B CN 106340897B
- Authority
- CN
- China
- Prior art keywords
- distributed generation
- generation resource
- node
- maximum penetration
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000035515 penetration Effects 0.000 claims abstract description 32
- 230000003068 static effect Effects 0.000 claims abstract description 10
- 238000012795 verification Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 230000007257 malfunction Effects 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H02J3/383—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- H02J3/386—
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Economics (AREA)
- Health & Medical Sciences (AREA)
- Human Resources & Organizations (AREA)
- Strategic Management (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Power Engineering (AREA)
- Marketing (AREA)
- Primary Health Care (AREA)
- Public Health (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of determination methods of power distribution network distributed generation resource allowed capacity, including：Wind turbine and photovoltaic apparatus to distributed generation resource to be accessed carry out the conversion of equivalent model under steady state conditions, a reactor；Using system distributed generation resource maximum penetration level as object function, the maximum penetration level of system distributed generation resource is determined by distribution power flow equilibrium equation and Static Security Constraints condition；The verification of protection device characteristics is carried out to identified system distributed generation resource maximum penetration level, if meeting the characteristic for not destroying initial protection equipment, is considered as the admissible maximum penetration level of system；If not satisfied, then correcting the capacity of distributed generation resource until meeting the characteristic requirements for not destroying protection equipment.Advantageous effect of the present invention：The maximum penetration level that can more comprehensively, accurately calculate the distributed generation resource of power distribution network under stable state, is conducive to the planning for preferably instructing Distributed Generation in Distribution System.
Description
Technical field
The invention belongs to Distributed Generation in Distribution System technical field more particularly to a kind of power distribution network distributed generation resource accesses
Hold method for determination of amount.
Background technology
With the access of a large amount of distributed generation resources in power distribution network, can be brought to the design, operation, maintenance of power distribution network certain
It influences.And introduce position difference, influence difference of the capacity difference to distribution network electric energy quality, trend and network loss of distributed generation resource
It is larger.Meanwhile the distributed generation resource of introducing may also can influence the measurement to electric current of circuit relay protection, so as to cause protection
The malfunction or tripping of equipment.
When introducing distributed generation resource, need to receive ability and each section to distributed generation resource capacity in view of power distribution network
The capacity distribution of point distributed generation resource, should ensure the Static Security Constraints condition of power distribution network, ensure not destroy relay again
Original protection feature gives full play to the advantage of distributed generation resource, and power distribution network is enable more to stablize, economically run.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems, it is proposed that a kind of power distribution network distributed generation resource allowed capacity
It determines that method, this method consider power distribution network Static Security Constraints condition and equipment protection characteristic, can preferably analyze, really
Determine the maximum penetration level of Distributed Generation in Distribution System.
To achieve the above object, concrete scheme of the invention is as follows：
A kind of determination method of power distribution network distributed generation resource allowed capacity, includes the following steps：
(1) wind turbine to distributed generation resource to be accessed and photovoltaic apparatus carry out turning for equivalent model under steady state conditions, a reactor
It changes；
(2) using system distributed generation resource maximum penetration level as object function, by distribution power flow equilibrium equation and quiet
State security constraints determine the maximum penetration level of system distributed generation resource；
(3) verification of protection device characteristics is carried out to identified system distributed generation resource maximum penetration level, if meeting
The characteristic for not destroying initial protection equipment, then be considered as the admissible maximum penetration level of system；If not satisfied, then correcting distribution
The capacity of power supply is until meet the characteristic requirements for not destroying protection equipment.
Further, in the step (1), the conversion for carrying out equivalent model is specially：
1-1) squirrel-cage influence generator in power generation process from power grid absorbing reactive power, with network voltage and output
Active power it is related；During accessing power grid, it is equivalent to PV node；
1-2) double-fed type influence generator stator output active-power P and reactive power Q respectively on stator d, q axis
Electric current it is directly proportional, P, Q can be separately adjustable, are equivalent to PQ nodes；
1-3) there is multiple permanent magnet formula synchronous generator independent excitation system, node type to depend on control mode,
When using voltage control mode, it is equivalent to PV node；
Photovoltaic cell model 1-4) is adjusted to PQ nodes by PI nodes.
Further, in the step (2), it is specially using system distributed generation resource maximum penetration level as object function：
max SDG1+SDG2+…+SDGm
Wherein, SDG1、SDG2、SDGmRespectively correspond to the capacity of each access point position distributed generation resource.
Further, in the step (2), distribution power flow equilibrium equation is specially：
In formula, PGi、QGiThe active and idle output of the power supply of respectively node i；PLi、QLiLoad has respectively at node i
Work(and reactive power；Ui、θiVoltage, phase angle respectively at node i；Uj、θjVoltage, phase angle at respectively node j；θijFor node
I, the phase angle difference of j；Gij、BijRespectively node i, the transconductance of j, mutual susceptance；N is node set；PDGm、QDGmDG at respectively m
Active and idle output.
Further, in the step (2), Static Security Constraints condition is specially：
In formula, Uimin、UimaxVoltage upper and lower limit respectively at node i；|Iij|、IijmaxThe respectively reality of circuit i-j
Current amplitude and circuit cut-off current；Respectively correspond to total allowed capacity
When, the distributed generation resource access capacity of each node, any one combination of overall system capacity satisfaction for the system, full at this time
The constraints of sufficient node voltage, line current.
Further, in the step (2), the introducing for separate unit distributed generation resource, the maximum of system distributed generation resource
The allowed capacity combination method of exhaustion and dichotomy are solved, i.e., first provide the value of an injection capacity, when its meet it is above-mentioned about
When beam condition, it is further added by injection capacity calculating, until being unsatisfactory for above-mentioned constraints, it is maximum to obtain system distributed generation resource
Injection capacity.
Further, in the step (2), the introducing for more distributed generation resources, the maximum of system distributed generation resource
The method for solving of allowed capacity is：
First to system distributed generation resource maximum penetration level to certain value, according to each node access sequence, everywhere load
Demand percentage is allocated Node distribution formula power supply capacity to fix the capacity ratio between each Node distribution formula power supply.It
The maximum access that each Node distribution formula power supply injection capacity determines system up to being unsatisfactory for constraints with this is gradually adjusted afterwards
Capacity.
Further, in the step (3), the method for calibration for separate unit distributed generation resource allowed capacity is：
Under underloading, it is assumed that the overcurrent protection setting value of certain circuit is In, normal current and threshold value are respectively I, II, when point
When cloth power supply is located at the upstream of certain circuit, InConstant, circuit supplies the electric current of load by distributed generation resource and power grid simultaneously
It provides；
When the capacity of distributed generation resource increases, will appear three kinds of tripping situations at this time can not be grid-connected, respectively normal operation
When reverse current be more than In, normal operation when reverse current be more than threshold value IIAnd In is more than II, corresponding capacity be respectively S,
SI、SII；Meanwhile when short circuit occur in other branches, the reverse current provided by the circuit distributed generation resource should not make the circuit
Relay there is malfunction, at this time corresponding distributed generation resource capacity be S1；It need to ensure required distributed generation resource capacity simultaneously
Less than S1、S、SIAnd SII。
Further, in the step (3), the method for calibration for more distributed generation resource allowed capacities is：
System power supply and upstream distributed generation resource provide a minimum short circuit current, downstream when line to line fault occurs for downstream
Distributed generation resource upstream occur three-phase shortcircuit when provide a maximum reverse current, by the relationship between the two electric currents into
Row verification.
Beneficial effects of the present invention：
It is proposed by the present invention to consider power distribution network Static Security Constraints condition and equipment protection characteristic determines power distribution network point
Cloth power supply allowed capacity, the maximum access that can more comprehensively, accurately calculate the distributed generation resource of power distribution network under stable state are held
Amount, is conducive to the planning for preferably instructing Distributed Generation in Distribution System.For solving more distributed generation resource allowed capacity institutes
The method provided quickly, reasonably can solve and distribute the capacity of distributed generation resource, promote high permeability distributed generation resource
It is grid-connected.
Description of the drawings
Fig. 1 is the flow diagram of the present invention；
Fig. 2 is false protection, tripping schematic diagram；
Fig. 3 is short circuit current I with distributed generation resource capacity S change schematic diagrams；
Fig. 4 is 400V power distribution network schematic diagrames.
Specific implementation mode：
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of determination method of Distributed Generation in Distribution System allowed capacity, specifically includes following steps：
Step 1：Carry out turning for equivalent model under steady state conditions, a reactor to distributed generation resource wind turbine to be accessed and photovoltaic apparatus
It changes：
(1) squirrel-cage influence generator stator winding is connected directly with power grid, active-power P that wind turbine absorbs power grid and
The reactive power Q of output is：
In formula, Us、XsRespectively stator voltage and leakage reactance, Rr、XrRespectively rotor resistance and leakage reactance.
From squirrel-cage influence generator is obtained in formula in power generation process from power grid absorbing reactive power, with network voltage
It is related to the active power of output.During accessing power grid, it is equivalent to PV node.
(2) the stator coil resistance of double-fed type influence generator is smaller to ignore, and stator instantaneous output is
In formula, p is number of pole-pairs, usd、usqFor stator d-axis and quadrature-axis voltage, isd、isqFor stator d-axis and quadrature axis current,
UsFor stator voltage.
From the active-power P and reactive power Q for obtaining stator output in formula respectively with the electric current on stator d, q axis at just
Than P, Q can be separately adjustable, are equivalent to PQ nodes.
(3) there is multiple permanent magnet formula synchronous generator independent excitation system, node type to depend on control mode, when
Using voltage control mode, PV node can be equivalent to.
(4) photovoltaic cell model need to be adjusted to PQ nodes by PI nodes, and the reactive power Q sent out can be calculated by following formula
In formula, I is the amplitude of the electric current of photovoltaic cell output, Ui、UjThe respectively real and imaginary parts of network voltage, P are light
Lie prostrate the active power of battery output.
Step 2：Using system distributed generation resource maximum penetration level as object function, pass through distribution power flow equilibrium equation
The maximum penetration level of system is determined with Static Security Constraints condition：
(1) using system distributed generation resource maximum penetration level as object function：
max SDG1+SDG2+…+SDGm
Wherein SDG1、SDG2…SDGmRespectively correspond to the capacity of each access point position.
(2) distribution power flow equilibrium equation is：
In formula, PGi、QGiThe active and idle output of the power supply of respectively node i；PLi、QLiLoad has respectively at node i
Work(and reactive power；Ui、θiVoltage, phase angle respectively at node i；Uj、θjVoltage, phase angle at respectively node j；θijFor node
I, the phase angle difference of j；Gij、BijRespectively node i, the transconductance of j, mutual susceptance；N is node set；PDGm、QDGmDG at respectively m
Active and idle output.
(3) static security is considered, node voltage, line current restrictive condition are：
In formula, Uimin、UimaxVoltage bound respectively at node i；|Iij|、IijmaxThe respectively reality of circuit i-j
Current amplitude and circuit cut-off current；To correspond to total allowed capacityWhen,
The distributed generation resource access capacity of each node, any one combination of overall system capacity satisfaction for the system, is satisfied by this time
The constraints of voltage, electric current.
(4) calculating of system allowed capacity：
1) for the introducing of separate unit distributed generation resource, method for solving is solved in combination with the method for exhaustion and dichotomy, i.e.,
The value for first providing an injection capacity is further added by injection capacity calculating when it meets above-mentioned constraints, until be unsatisfactory for it is above-mentioned about
Beam condition obtains maximum injection capacity.
2) for the introducing of more distributed generation resources, method for solving is as shown in Figure 1, can be first maximum to system distributed generation resource
Allowed capacity is to certain value, and according to each node access sequence, the demand percentage of load fixes each Node distribution formula power supply everywhere
Between capacity ratio, and each Node distribution formula power supply capacity is allocated.Each Node distribution formula power supply note is gradually adjusted later
Enter the maximum penetration level that capacity determines system up to being unsatisfactory for constraints with this.
Step 3：The maximum penetration level of distributed generation resource is verified according to the characteristic of protection equipment, to ensure
It is standard to protect equipment not occur malfunction or tripping：
(1) in power distribution network, separate unit distributed generation resource allowed capacity is verified, when the line protective device filled is electric current
When protection, it may appear that situations such as with the increase false protection of DG capacity or tripping, such as Fig. 2.Under underloading, as shown in Figure 3, it is assumed that line
The overcurrent protection setting value of road L2 is In, normal current and threshold value are I2、When distributed generation resource is located at the upstream of L2, InNo
Become, the electric current of load A is provided simultaneously by distributed generation resource and power grid.When the capacity increase of distributed generation resource, it will appear three at this time
Kind of tripping situation can not be grid-connected, respectively normal operation when reverse current be more than In, normal operation when the big threshold of reverse current
ValueAnd In is more thanCorresponding capacity is respectively S2、Meanwhile when short circuit occurs in other branches such as L3, by the line
The reverse current that road distributed generation resource provides should not make the relay of the circuit malfunction occur, and corresponding distributed generation resource holds at this time
Amount is S1.It need to ensure that required distributed generation resource capacity is less than S1、S2、
(2) as shown in figure 4, verification for more distributed generation resource allowed capacities, need to pass through system power supply and upstream point
Cloth power supply provides a minimum short circuit current when line to line fault occurs for downstream, and in upstream three-phase occurs for downstream distribution formula power supply
One maximum reverse current is provided when short-circuit, is verified by the relationship between the two electric currents.Checking procedure is as follows：
Assuming that the node 7,8 in 400V power distribution networks is respectively connected to DG1, DG2, voltage and impedance are respectively EDG1、ZDG1With
EDG2、ZDG2.When circuit 4,6 or 7 ends are broken down, corresponding short circuit current will increase, at this time corresponding line to line fault electricity
Stream is respectively
Wherein, Eeq、And Zeq、For at node 4 and 5 at this time equivalent voltage and impedance；Z4、Z5、
Z6、Z7For the impedance of circuit 4,5,6,7.And when three-phase shortcircuit occurs for circuit 3,4 or 5 ends, have on circuit 4,6 or 7 reversed
Electric current passes through, and size is：
Wherein,Equivalent voltage at node 5 and impedance when thus.It need to ensure protection on circuit 4,6,7 not
There is malfunction, it is contemplated that k times of allowance meets：
It is proposed by the present invention to consider power distribution network Static Security Constraints condition and equipment protection characteristic determines power distribution network point
Cloth power supply allowed capacity, the maximum access that can more comprehensively, accurately calculate the distributed generation resource of power distribution network under stable state are held
Amount, is conducive to the planning for preferably instructing Distributed Generation in Distribution System.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. a kind of determination method of power distribution network distributed generation resource allowed capacity, characterized in that include the following steps：
(1) wind turbine to distributed generation resource to be accessed and photovoltaic apparatus carry out the conversion of equivalent model under steady state conditions, a reactor；
Carry out equivalent model conversion be specially：
1-1) squirrel-cage influence generator in power generation process from power grid absorbing reactive power, with having for network voltage and output
Work(power is related；During accessing power grid, it is equivalent to PV node；
1-2) active-power P of the stator output of double-fed type influence generator is directly proportional to the electric current on stator q axis；Double-fed type sense
Answer the reactive power Q that the stator of generator exports directly proportional to the electric current on stator d axis；P, Q can be separately adjustable, is equivalent to PQ sections
Point；
1-3) multiple permanent magnet formula synchronous generator has independent excitation system, and node type depends on control mode, when adopting
When with voltage control mode, it is equivalent to PV node；
Photovoltaic cell model 1-4) is adjusted to PQ nodes by PI nodes；
(2) using system distributed generation resource maximum penetration level as object function, pass through distribution power flow equilibrium equation and static peace
Staff cultivation condition determines the maximum penetration level of system distributed generation resource；
It is specially using system distributed generation resource maximum penetration level as object function：
max(SDG1+SDG2+…+SDGm)
Distribution power flow equilibrium equation is specially：
In formula, PGi、QGiThe active and idle output of the power supply of respectively node i；PLi、QLiRespectively at node i load active and
Reactive power；Ui、θiVoltage, phase angle respectively at node i；Uj、θjVoltage, phase angle at respectively node j；θijFor node i, j
Phase angle difference；Gij、BijRespectively node i, the transconductance of j, mutual susceptance；N is node set；PDGm、QDGmDG's has at respectively m
Work(and idle output；
Static Security Constraints condition is specially：
In formula, Uimin、UimaxVoltage upper and lower limit respectively at node i；|Iij|、IijmaxThe respectively actual current of circuit i-j
Amplitude and circuit cut-off current；Respectively it is corresponding to the total allowed capacity of distributed generation resourceWhen, the distributed generation resource allowed capacity of each node, at this time the total allowed capacity of distributed generation resource meet
Any one combination for the system, is satisfied by the constraints of node voltage, line current；
(3) verification that protection device characteristics are carried out to identified system distributed generation resource maximum penetration level, does not break if meeting
The characteristic of bad initial protection equipment, then be considered as the admissible maximum penetration level of system；If not satisfied, then correcting distributed generation resource
Maximum penetration level until meet do not destroy protection equipment characteristic requirements.
2. a kind of determination method of power distribution network distributed generation resource allowed capacity as described in claim 1, characterized in that the step
Suddenly in (2), the introducing for separate unit distributed generation resource, the maximum penetration level combination method of exhaustion of system distributed generation resource and two points
Method is solved, i.e., first provides the value of an allowed capacity, when it meets above-mentioned constraints, be further added by allowed capacity meter
It calculates, until being unsatisfactory for above-mentioned constraints, obtains system distributed generation resource maximum penetration level.
3. a kind of determination method of power distribution network distributed generation resource allowed capacity as described in claim 1, characterized in that the step
Suddenly in (2), the method for solving of the introducing for more distributed generation resources, the maximum penetration level of system distributed generation resource is：
First to system distributed generation resource maximum penetration level to certain value, according to each node access sequence, the demand of load everywhere
Ratio is allocated each Node distribution formula power supply allowed capacity to fix the capacity ratio between each Node distribution formula power supply；
Each Node distribution formula power supply allowed capacity is gradually adjusted later until being unsatisfactory for constraints, and the maximum standard of system is determined with this
Enter capacity.
4. a kind of determination method of power distribution network distributed generation resource allowed capacity as described in claim 1, characterized in that the step
Suddenly in (3), the method for calibration for separate unit distributed generation resource maximum penetration level is：
Under underloading, it is assumed that the overcurrent protection setting value of certain circuit is In, normal current and threshold value are respectively I, II, work as distribution
When power supply is located at the upstream of certain circuit, InConstant, the electric current of circuit supply load is provided simultaneously by distributed generation resource and power grid；
When the maximum penetration level of distributed generation resource increases, will appear three kinds of tripping situations at this time can not be grid-connected, respectively normally
Reverse current when operation is more than In, normal operation when reverse current be more than threshold value IIAnd InMore than II, corresponding capacity difference
For S, SI、SII；Meanwhile when short circuit occur in other branches, the reverse current provided by the circuit distributed generation resource should not make this
There is malfunction in the relay of circuit, and corresponding distributed generation resource maximum penetration level is S at this time1；It need to ensure required distribution
Power supply maximum penetration level is less than S simultaneously1、S、SIAnd SII。
5. a kind of determination method of power distribution network distributed generation resource allowed capacity as described in claim 1, characterized in that
In the step (3), the method for calibration for more distributed generation resource maximum penetration levels is：
System power supply and upstream distributed generation resource provide a minimum short circuit current, downstream distribution when line to line fault occurs for downstream
Formula power supply provides a maximum reverse current when three-phase shortcircuit occurs for upstream, and school is carried out by the relationship between the two electric currents
It tests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834780.9A CN106340897B (en) | 2016-09-20 | 2016-09-20 | A kind of determination method of power distribution network distributed generation resource allowed capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834780.9A CN106340897B (en) | 2016-09-20 | 2016-09-20 | A kind of determination method of power distribution network distributed generation resource allowed capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106340897A CN106340897A (en) | 2017-01-18 |
| CN106340897B true CN106340897B (en) | 2018-11-06 |
Family
ID=57838941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610834780.9A Expired - Fee Related CN106340897B (en) | 2016-09-20 | 2016-09-20 | A kind of determination method of power distribution network distributed generation resource allowed capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106340897B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684917A (en) * | 2017-03-07 | 2017-05-17 | 西华大学 | Positional dynamic optimization and allowed capacity calculating method and system for distributed power supplies |
| CN109560568B (en) * | 2017-09-25 | 2022-01-28 | 中国电力科学研究院 | Double-fed wind power plant maximum accessible capacity determination method based on short-circuit current margin |
| CN107959308B (en) * | 2018-01-10 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Power distribution network distributed energy access adaptability assessment method and device |
| CN108336731A (en) * | 2018-03-23 | 2018-07-27 | 中国农业大学 | A kind of computational methods of power distribution network distributed generation resource allowed capacity |
| CN108493996A (en) * | 2018-04-03 | 2018-09-04 | 国电南瑞科技股份有限公司 | A kind of randomness power supply maximum penetration level model foundation and method for solving |
| CN108649605B (en) * | 2018-05-22 | 2021-12-14 | 国网内蒙古东部电力有限公司通辽供电公司 | DRE grid-connected access capacity planning method based on double-layer scene interval power flow |
| CN108830744B (en) * | 2018-06-08 | 2021-09-03 | 广东电网有限责任公司电力调度控制中心 | Dynamic verification method for external network equivalent model of designated area in power system |
| CN108933438B (en) * | 2018-06-29 | 2021-10-08 | 河海大学 | Distribution network distributed power supply online control device and method based on system operation mode |
| CN108923461B (en) * | 2018-07-11 | 2021-10-15 | 河海大学 | Distributed inverter power supply network access optimization method considering relay protection constraint |
| CN110932308A (en) * | 2019-07-23 | 2020-03-27 | 国网浙江省电力有限公司湖州供电公司 | Distributed power supply grid-connected capacity management system and management method |
| CN113872197A (en) * | 2021-09-29 | 2021-12-31 | 全球能源互联网研究院有限公司 | Method and device for predicting power quality interference source acceptance capacity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077449A (en) * | 2014-07-02 | 2014-10-01 | 中国南方电网有限责任公司 | Method for calculating inverse DG penetration level on basis of particle swarm optimization |
| CN105281360A (en) * | 2015-09-14 | 2016-01-27 | 国家电网公司 | Distributed photovoltaic automatic generating control method based on sensitivity |
| CN105305433A (en) * | 2015-11-10 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum power permeability calculation method for distributed power supply in connection to power distribution network |
-
2016
- 2016-09-20 CN CN201610834780.9A patent/CN106340897B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104077449A (en) * | 2014-07-02 | 2014-10-01 | 中国南方电网有限责任公司 | Method for calculating inverse DG penetration level on basis of particle swarm optimization |
| CN105281360A (en) * | 2015-09-14 | 2016-01-27 | 国家电网公司 | Distributed photovoltaic automatic generating control method based on sensitivity |
| CN105305433A (en) * | 2015-11-10 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum power permeability calculation method for distributed power supply in connection to power distribution network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106340897A (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106340897B (en) | A kind of determination method of power distribution network distributed generation resource allowed capacity | |
| Brochu et al. | Validation of single-and multiple-machine equivalents for modeling wind power plants | |
| CN104485684B (en) | A kind of power system fault current computational methods containing double-fed fan motor unit | |
| CN107064736B (en) | A kind of Fault Locating Method connecing inverse distributed power power distribution network containing more T | |
| CN106410870A (en) | Frequency control method of offshore wind power integration multi-terminal flexible DC transmission system | |
| CN105162099B (en) | A kind of computing Surface Method for determining distributed power generation access power network unsymmetrical short-circuit electric current | |
| CN104077449B (en) | A kind of inverse type DG calculation of penetration level methods based on particle cluster algorithm | |
| CN106340907A (en) | Power system security and stability control strategy determining method and device | |
| CN104201671B (en) | A kind of static electric voltage stability appraisal procedure of the three-phase imbalance power distribution network containing wind-powered electricity generation | |
| CN105762777A (en) | Pilot protection method containing multi-T-connection inverter interfaced distributed generation power distribution network | |
| CN108521141A (en) | It is a kind of meter and wind power plant voltage's distribiuting characteristic short-circuit current calculation method | |
| CN106099979B (en) | A kind of unit under-excitation ability analysis method for considering stabilization of power grids limitation | |
| Das et al. | Effects of distributed generators on impedance-based fault location algorithms | |
| Yang et al. | The impact of distributed wind power generation on voltage stability in distribution systems | |
| Xiao et al. | Key technologies for flexible interconnection in urban power grid and pilot demonstration | |
| Rong et al. | Methods for transient AC overvoltage reduction at wind farm terminal | |
| CN108023341A (en) | A kind of power distribution network adaptive guard method containing distributed generation resource | |
| Feltes et al. | Case studies of wind park modeling | |
| Vilchez et al. | Impact of renewable energy generation technologies on the power quality of the electrical power systems | |
| CN107480406A (en) | A kind of dynamic vector method for establishing model of double-fed fan motor unit calculation of short-circuit current | |
| Li et al. | Research on fault characteristics and relay protection strategy of doubly fed induction generator wind turbine | |
| CN113447803A (en) | Short-circuit current calculation voltage coefficient value taking method for checking on-off capacity of circuit breaker | |
| Cai et al. | Study on protection of large scale wind power integration | |
| Kudiyarasan et al. | Modern analysis of power flow and network stability of transmission lines for nuclear power dispatch | |
| Vilmann | Frequency Stability of Offshore Wind Farms in Weak Grids with Grid-forming Wind Turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 Termination date: 20190920 |