CN107359619A - The load shedding control method of system voltage stability after a kind of meter and photovoltaic access - Google Patents
The load shedding control method of system voltage stability after a kind of meter and photovoltaic access Download PDFInfo
- Publication number
- CN107359619A CN107359619A CN201710774972.XA CN201710774972A CN107359619A CN 107359619 A CN107359619 A CN 107359619A CN 201710774972 A CN201710774972 A CN 201710774972A CN 107359619 A CN107359619 A CN 107359619A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic
- voltage
- station
- cutting load
- failure
- 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.)
- Granted
Links
Classifications
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of load shedding control method of system voltage stability after meter and photovoltaic access, belong to Power System and its Automation technical field.The present invention recovers to have a negative impact for large-scale photovoltaic access power network to high-voltage fence voltage after failure, Voltage Instability situation is judged by the partial electric grid static voltage stability index for calculating external network equivalent, station absorbing reactive power characteristic variations identification Voltage Instability leading factor is collected with photovoltaic after failure, it is cutting load control strategy when photovoltaic is leading and section is leading to formulate instable factor respectively, realizes the cutting load control to voltage weak node load.The present invention is advantageous to electric power system dispatching operations staff and held in photovoltaic access system in moving law, basis is proposed to coordinate to formulate cutting load optimisation strategy, so as to lift the validity of bulk power grid security and stability control and automatization level.
Description
Technical field
The invention belongs to Power System and its Automation technical field, and more precisely the present invention relates to one kind meter and photovoltaic
The load shedding control method of system voltage stability after access.
Background technology
Currently the new energy technology based on wind-powered electricity generation, photovoltaic is widely applied, and large-scale photovoltaic concentrates access in dagger-axe
Wall, desert etc. area, the area power grid capacity of short circuit of access is relatively small, and the active power output of photovoltaic electric power random fluctuation is passed through
Near region power network and long passway for transmitting electricity, have influence on Reactive Power Balance characteristic, in turn result in busbar voltage fluctuation on the way.
Simultaneously as photovoltaic plant Reactive-power control itself is limited in one's ability, and a part of idle work(can be lost in the inversion link of photovoltaic plant
Rate, and reactive power size is substantially proportional to a relation with sending out active power.Once failure causes photovoltaic plant busbar voltage
Significantly fall, to keep stable active output, the boosting of photovoltaic plant access system becomes and further can absorbed necessarily from system
It is idle, the recovery to the voltage of high-voltage fence after failure has a negative impact, or even the malicious influences added fuel to the flames, with light
Lie prostrate this adverse effect of the increase also corresponding aggravation of access scale and ratio.
Emergent control based on fault detect and triggering is that stability characteristic (quality) deteriorates or even caused after preventing electric power system fault
One of most effective measure of large-scale blackout, for the emergent control of transient voltage unstability, cutting load operation can be used to solve
The certainly system problem caused by node voltage and Line Flow are out-of-limit, maintain the transient stability of system.Existing cutting load control
Off-line strategy table processed is typically according to the method for operation, it is assumed that various fault disturbances carry out calculating analysis, when section power is more than setting
The load of corresponding location is cut off during threshold.But for large-scale photovoltaic access partial electric grid for, if only using section power as
Steady control action threshold, the deteriorating effects of system voltage stability after photovoltaic access is not distinguish between, it is possible to photovoltaic access occur
Capacity is larger so that exchange is smaller by electric section power, showing for Voltage Instability still occurs when control action threshold steady less than setting
As.That is the big hair of photovoltaic or section power is excessive is likely to result in Voltage Instability, it is necessary to distinguish Voltage Instability leading factor, is avoided
Setting threshold is only less than by section power to ignore Voltage Instability situation caused by photovoltaic access.
The patent application method of point selection " a kind of cutting load based on Voltage Drop amplitude "
(CN201410273988.9) selection in cutting load place is carried out with the Voltage Drop amplitude of each load bus of system after large disturbances.
Patent application " a kind of static voltage stability wide area load shedding control method for considering external network equivalent " (CN201010616210.5)
Address the static voltage stability wide area load shedding control method for the regional power grid being connected by single-point with outer net.But the above method is equal
The Emergency Control Strategy of system voltage stability change after photovoltaic accesses is not addressed, and only from the change of static or Enhancement of Transient Voltage Stability
Angle builds cutting load quantizating index, reduces the adaptability of cutting load control strategy.
The content of the invention
The purpose of the present invention is：For deficiency of the prior art, there is provided system voltage is steady after one kind meter and photovoltaic access
Qualitatively load shedding control method.This method is recovered to produce for large-scale photovoltaic access power network to high-voltage fence voltage after failure
The problem of adverse effect, Voltage Instability situation is judged by the partial electric grid static voltage stability index for calculating external network equivalent, with
Photovoltaic collects station absorbing reactive power characteristic variations identification Voltage Instability leading factor after failure, and it is light to formulate instable factor respectively
Cutting load control strategy when volt is dominated and section is leading, realize the cutting load control to voltage weak node load.
Specifically, the present invention is comprised the following steps using following technical scheme come what is realized：
1) outer net of partial electric grid is subjected to Thevenin's equivalence and obtains equivalent outer net, according to photovoltaic typical case day in partial electric grid
Output change curve, contributed according to photovoltaic and the method for operation is divided into more sets of data by the difference of electrical power, if the tricks of data
For M；
2) the system admittance model formed according to partial electric grid after different modes failure and equivalent outer net, carries out trend point
Analysis, asks for system Jacobian matrix the minimum eigenvalue λmin, and according to λminWhether setting value ε is more than as static system voltage
Stability criterion, if λminMore than ε, then judge that post-fault system air extract is larger, does not take cutting load control, tie
Beam this method；Conversely, then need to enter cutting load control, into step 3)；Wherein ε be level off to 0 number；
3) station absorbing reactive power characteristic variations identification Voltage Instability leading factor is collected with photovoltaic after failure, calculated respectively
Voltage Instability factor is cutting load amount when photovoltaic is leading and section is leading；
4) different load Node Voltage Sensitivity index is considered, and according to cutting under different Voltage Instability leading factor
Load matches the larger load of sensitivity index successively, forms Emergency Control Strategy under the different outputs of M set photovoltaics and the method for operation.
Such scheme is further characterized by, and in the step 3), specifically includes following steps：
3-1) set partial electric grid and N number of photovoltaic be present and collect station, calculate t after a failure and collect in terms of station from i-th
The reactive power changes delta Q that photovoltaic station absorbsi：
ΔQi=Qi,t-Qi,t0
In formula：Qi,tCollect the reactive power for photovoltaic station absorption of entering in terms of station, Q from i-th for ti,t0For failure when
Carve the reactive power for collecting to enter in terms of station the absorption of photovoltaic station from i-th；
Pass through max { Δ QiDifferentiate Voltage Instability leading factor, wherein i ∈ N：
If 3-2) Voltage Instability leading factor is section, cutting load amount is calculated as follows after failure：
ΔPD=KDPj
In formula：ΔPDIt is the cutting load amount under section for Voltage Instability leading factor, j is the alternating current circuit broken down
Sequence number, PjFor the power of failure prior fault circuit, KDFor the proportionality coefficient of setting；
If Voltage Instability leading factor is photovoltaic, cutting load amount is calculated as follows after failure：
In formula：ΔPGIt is the cutting load amount under photovoltaic for Voltage Instability leading factor, QiCollect station from being for i-th of photovoltaic
System absorbs idle, ViCollect station voltage, Q for i-th of photovoltaici,t、Qi,t0When respectively i-th of photovoltaic collects station t and failure
Carve from system and absorb idle, Vi,t、Vi,t0Respectively i-th of photovoltaic collects station t and fault moment voltage, thenFor light
Volt collects the equivalent admittance variable quantity at station,Collect station equivalent admittance for i-th of photovoltaic of t,For fault moment i-th
Individual photovoltaic collects station equivalent admittance, wherein i ∈ N；KGVoltage stabilization to be determined by system photovoltaic access ratio and scale is converted
Cutting load coefficient；
Such scheme is further characterized by, in the step 4), under according to different Voltage Instability leading factor
When cutting load amount matches the larger load of sensitivity index successively, can suitably more cutting loads, but cutting load amount should meet different sections
The maximum cutting load ratio constraint of point.
Beneficial effects of the present invention are as follows：The present invention can improve urgent cutting load control after large-scale photovoltaic access power network
Method is grasped meter and the urgent cutting load control strategy of system voltage stability, avoided for the adaptability of complicated unstability scene
It was less than threshold value only in accordance with section power in the past and judges not cutting load.The present invention is advantageous to electric power system dispatching operations staff assurance
In moving law in photovoltaic access system, basis is proposed to coordinate to formulate cutting load optimisation strategy, so as to lift bulk power grid safety
The validity and automatization level of stability contorting.
Brief description of the drawings
Fig. 1 is the flow chart of the inventive method.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and with reference to example.
Embodiment 1：
The present embodiment is a kind of load shedding control method of system voltage stability after meter and photovoltaic access, and it is with certain a period of time
It is research object to carve powered partial electric grid, accesses power network for large-scale photovoltaic and high-voltage fence voltage after failure is recovered to produce
The problem of adverse effect, Voltage Instability situation is judged by the partial electric grid static voltage stability index for calculating external network equivalent, with
Photovoltaic collects station absorbing reactive power characteristic variations identification Voltage Instability leading factor after failure, and it is light to formulate instable factor respectively
Cutting load control strategy when volt is dominated and section is leading, realize the cutting load control to voltage weak node load, specific steps
As shown in Figure 1.
Step 1 describes in Fig. 1, using powered partial electric grid of a certain moment as research object, by the outer of partial electric grid
Net carries out Thevenin's equivalence and obtains equivalent outer net, according to photovoltaic typical case daily output change curve in partial electric grid, goes out according to photovoltaic
Power and the method for operation is divided into M sets of data by the difference of electrical power, different sets of data only exist photovoltaic and contributed and by electrical power
Difference.
Step 2 describes in Fig. 1, the system admittance formed according to partial electric grid after different modes failure and equivalent outer net
Model, tidal current analysis is carried out, asks for system Jacobian matrix the minimum eigenvalue λmin, and according to λminWhether setting value ε is more than
As static system voltage stability criterion, if λminMore than ε, then judge that post-fault system air extract is larger, does not adopt
Take cutting load control；Conversely, then need to enter cutting load control, into step 3.Wherein ε be level off to 0 number, by being specifically
System determines.
Step 3 describes in Fig. 1, collects station absorbing reactive power characteristic variations identification Voltage Instability with photovoltaic after failure
Leading factor, it is cutting load amount when photovoltaic is leading and section is leading to calculate Voltage Instability factor respectively.Detailed process is as follows：
If partial electric grid, which has N number of photovoltaic, collects station, t collects photovoltaic field of entering in terms of station from i-th after calculating failure
Stand the reactive power changes delta Q absorbedi：
ΔQi=Qi,t-Qi,t0
In formula：1~2s is typically taken as according to photovoltaic plant reactive voltage characteristic and rule, t after failure；Qi,tFor t from
Collect station for i-th and see into the reactive power that photovoltaic station absorbs, Qi,t0Collect photovoltaic of entering in terms of station from i-th for fault moment
The reactive power that station absorbs.
Due to grid-connected capacity it is relatively small when, photovoltaic collects the reactive power change that station absorbs from system after failure
Very little, you can pass through max { Δ QiDifferentiate Voltage Instability leading factor, i.e.,：
If Voltage Instability leading factor is section, cutting load amount and the approximately linear relation of section power, cut after failure
Load is represented by：
ΔPD=KDPj
In formula：ΔPDIt is the cutting load amount under section for Voltage Instability leading factor, j is the alternating current circuit broken down
Sequence number, PjFor the power of failure prior fault circuit, KDFor the proportionality coefficient of setting, determined by system conditions, it is general in engineering
It is taken as 0.2~0.3.
If Voltage Instability leading factor is photovoltaic, define photovoltaic collect station equivalent admittance variable quantity instruct cutting load
Amount, cutting load amount are represented by：
In formula：ΔPGIt is the cutting load amount under photovoltaic for Voltage Instability leading factor, QiCollect station from being for i-th of photovoltaic
System absorbs idle, ViCollect station voltage, Q for i-th of photovoltaici,t、Qi,t0When respectively i-th of photovoltaic collects station t and failure
Carve from system and absorb idle, Vi,t、Vi,t0Respectively i-th of photovoltaic collects station t and fault moment voltage, thenFor light
Volt collects the equivalent admittance variable quantity at station,Collect station equivalent admittance for i-th of photovoltaic of t,For fault moment i-th
Individual photovoltaic collects station equivalent admittance, wherein i ∈ N.KGVoltage stabilization to be determined by system photovoltaic access ratio and scale is converted
Cutting load coefficient.
Because photovoltaic plant stand admittance characteristic is different under different modes and photovoltaic reactive voltage characteristic, and photovoltaic access ratio is got over
Greatly, equivalent admittance is bigger, that is, it is stronger to deteriorate voltage stability effect.
Step 4 describes in Fig. 1, considers different load Node Voltage Sensitivity index, and according to different voltages
Unstability leading factor incision load matches the larger load of sensitivity index successively, forms the different outputs of M set photovoltaics and operation
Emergency Control Strategy under mode.Due to cutting load amount be not exactly equal to each node can cutting load power add and, to meet system voltage
Stability requirement, can suitably more cutting loads, but cutting load amount should meet the constraint of different node maximum cutting load ratios.
Although the present invention is disclosed as above with preferred embodiment, embodiment is not for limiting the present invention's.Not
In the spirit and scope for departing from the present invention, any equivalence changes done or retouching, the protection domain of the present invention is also belonged to.Cause
This protection scope of the present invention should be using the content that claims hereof is defined as standard.
Claims (3)
1. the load shedding control method of system voltage stability after a kind of meter and photovoltaic access, it is characterised in that including following step
Suddenly：
1) outer net of partial electric grid is subjected to Thevenin's equivalence and obtains equivalent outer net, according to photovoltaic typical case daily output in partial electric grid
Change curve, contributed according to photovoltaic and the method for operation is divided into more sets of data by the difference of electrical power, if the tricks of data is M；
2) the system admittance model formed according to partial electric grid after different modes failure and equivalent outer net, carries out tidal current analysis, asks
Take system Jacobian matrix the minimum eigenvalue λmin, and according to λminWhether setting value ε is more than as static system voltage stabilization
Criterion, if λminMore than ε, then judge that post-fault system air extract is larger, does not take cutting load control, terminate this
Method；Conversely, then need to enter cutting load control, into step 3)；Wherein ε be level off to 0 number；
3) station absorbing reactive power characteristic variations identification Voltage Instability leading factor is collected with photovoltaic after failure, calculates voltage respectively
Instable factor is cutting load amount when photovoltaic is leading and section is leading；
4) different load Node Voltage Sensitivity index is considered, and according to the cutting load under different Voltage Instability leading factor
Measure and match the larger load of sensitivity index successively, form Emergency Control Strategy under the different outputs of M set photovoltaics and the method for operation.
2. the load shedding control method of system voltage stability, its feature after meter according to claim 1 and photovoltaic access
It is, in the step 3), specifically includes following steps：
3-1) set partial electric grid and N number of photovoltaic be present and collect station, calculate t after a failure and collect photovoltaic of entering in terms of station from i-th
The reactive power changes delta Q that station absorbsi：
ΔQi=Qi,t-Qi,t0
In formula：Qi,tCollect the reactive power for photovoltaic station absorption of entering in terms of station, Q from i-th for ti,t0For fault moment from
Collect station for i-th and see into the reactive power that photovoltaic station absorbs；
Pass through max { Δ QiDifferentiate Voltage Instability leading factor, wherein i ∈ N：
If 3-2) Voltage Instability leading factor is section, cutting load amount is calculated as follows after failure：
ΔPD=KDPj
In formula：ΔPDIt is the cutting load amount under section for Voltage Instability leading factor, j is the sequence number for the alternating current circuit broken down,
PjFor the power of failure prior fault circuit, KDFor the proportionality coefficient of setting；
If Voltage Instability leading factor is photovoltaic, cutting load amount is calculated as follows after failure：
In formula：ΔPGIt is the cutting load amount under photovoltaic for Voltage Instability leading factor, QiCollect station for i-th of photovoltaic to inhale from system
Receive idle, ViCollect station voltage, Q for i-th of photovoltaici,t、Qi,t0Respectively i-th of photovoltaic collect station t and fault moment from
System absorbs idle, Vi,t、Vi,t0Respectively i-th of photovoltaic collects station t and fault moment voltage, thenCollect for photovoltaic
The equivalent admittance variable quantity stood,Collect station equivalent admittance for i-th of photovoltaic of t,For i-th of photovoltaic of fault moment
Collect station equivalent admittance, wherein i ∈ N；KGVoltage stabilization to be determined by system photovoltaic access ratio and scale converts cutting load
Coefficient.
3. the load shedding control method of system voltage stability, its feature after meter according to claim 1 and photovoltaic access
Be, in the step 4), the cutting load amount under according to different Voltage Instability leading factor match successively sensitivity index compared with
During big load, can suitably more cutting loads, but cutting load amount should meet different node maximum cutting load ratios constraints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774972.XA CN107359619B (en) | 2017-08-31 | 2017-08-31 | Load shedding control method considering voltage stability of system after photovoltaic access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774972.XA CN107359619B (en) | 2017-08-31 | 2017-08-31 | Load shedding control method considering voltage stability of system after photovoltaic access |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107359619A true CN107359619A (en) | 2017-11-17 |
| CN107359619B CN107359619B (en) | 2020-08-11 |
Family
ID=60289771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710774972.XA Active CN107359619B (en) | 2017-08-31 | 2017-08-31 | Load shedding control method considering voltage stability of system after photovoltaic access |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107359619B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808687A (en) * | 2018-06-26 | 2018-11-13 | 国家电网公司东北分部 | A kind of method and device for preventing the wind power plant of transient voltage unstability from cutting machine |
| CN108899912A (en) * | 2018-07-10 | 2018-11-27 | 福州大学 | A kind of online sort method in cutting load place improving voltage stability |
| CN110571790A (en) * | 2019-03-21 | 2019-12-13 | 中国电力科学研究院有限公司 | Method and system for online voltage stability early warning based on Thevenin equivalence |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280832A (en) * | 2013-05-06 | 2013-09-04 | 兰州交通大学 | Direct-drive wind power system for wind power plant |
| CN103678889A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration |
| JP2014171274A (en) * | 2013-03-01 | 2014-09-18 | Denso Corp | Power control unit |
| CN104242308A (en) * | 2014-09-26 | 2014-12-24 | 天津大学 | Multisource system partitioning method considering voltage stabilization |
| US20160126739A1 (en) * | 2014-11-04 | 2016-05-05 | Nec Laboratories America, Inc. | Enhancing power system voltage stability using grid energy storage for voltage support |
| CN106786805A (en) * | 2017-03-29 | 2017-05-31 | 华北电力大学（保定） | The straight trend section of friendship that a kind of meter and photovoltaic cluster are accessed coordinates method for optimally controlling |
-
2017
- 2017-08-31 CN CN201710774972.XA patent/CN107359619B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014171274A (en) * | 2013-03-01 | 2014-09-18 | Denso Corp | Power control unit |
| CN103280832A (en) * | 2013-05-06 | 2013-09-04 | 兰州交通大学 | Direct-drive wind power system for wind power plant |
| CN103678889A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Photovoltaic power generation accommodating capacity calculation method taking static voltage stability into consideration |
| CN104242308A (en) * | 2014-09-26 | 2014-12-24 | 天津大学 | Multisource system partitioning method considering voltage stabilization |
| US20160126739A1 (en) * | 2014-11-04 | 2016-05-05 | Nec Laboratories America, Inc. | Enhancing power system voltage stability using grid energy storage for voltage support |
| CN106786805A (en) * | 2017-03-29 | 2017-05-31 | 华北电力大学（保定） | The straight trend section of friendship that a kind of meter and photovoltaic cluster are accessed coordinates method for optimally controlling |
Non-Patent Citations (2)
| Title |
|---|
| CARSON W. TAYLOR等: "Concepts of Undervoltage Load Shedding for Voltage Stability", 《IEEE TRANSACTIONS ON POWER DELIVERY》 * |
| 杜潇等: "大型光伏电站静态电压稳定性分析", 《电网技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808687A (en) * | 2018-06-26 | 2018-11-13 | 国家电网公司东北分部 | A kind of method and device for preventing the wind power plant of transient voltage unstability from cutting machine |
| CN108899912A (en) * | 2018-07-10 | 2018-11-27 | 福州大学 | A kind of online sort method in cutting load place improving voltage stability |
| CN110571790A (en) * | 2019-03-21 | 2019-12-13 | 中国电力科学研究院有限公司 | Method and system for online voltage stability early warning based on Thevenin equivalence |
| CN110571790B (en) * | 2019-03-21 | 2021-11-16 | 中国电力科学研究院有限公司 | Method and system for online voltage stability early warning based on Thevenin equivalence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107359619B (en) | 2020-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069814B (en) | The Fuzzy Chance Constrained Programming method and system that distribution distributed generation resource capacity is layouted | |
| CN110896231B (en) | Distributed photovoltaic capacity receiving calculation method and system for power distribution network in poverty alleviation area | |
| CN105281366B (en) | Method that is a kind of while realizing low voltage crossing and isolated island detection | |
| CN110034584B (en) | Photovoltaic power station self-adaptive reactive voltage control method considering reactive power abundance | |
| CN107359619A (en) | The load shedding control method of system voltage stability after a kind of meter and photovoltaic access | |
| CN110323738A (en) | It is a kind of for determine DC transmission system carrying new energy ability method and system | |
| CN106505608A (en) | Meter and the distributed power source calculation of penetration level method of capacity of short circuit constraint | |
| CN107766596A (en) | A kind of low voltage ride-through capability method of tire based on typical fault operating mode collection | |
| CN102769292B (en) | Method for enhancing voltage safety margin of wind farm | |
| CN114172212B (en) | Method for improving transient active power output of photovoltaic unit during low voltage ride through | |
| CN108599174A (en) | A kind of high proportion new energy power grid Transient Voltage Stability optimal control method | |
| Altaf et al. | Renewable energy integration challenge on power system protection and its mitigation for reliable operation | |
| CN108306316A (en) | Positive-negative sequence coordinated control systems and method of the chain type STATCOM in unbalanced source voltage | |
| Liu et al. | Adaptive control strategy to enhance penetration of PV power generations in weak grid | |
| Dajun et al. | Research on PV generation participating in power grid frequency regulation | |
| CN107046296A (en) | Adaptive isolated island detection algorithm based on MPPT | |
| Rong et al. | Methods for transient AC overvoltage reduction at wind farm terminal | |
| CN104348180B (en) | Distributed power supply grid-connected point and access mode selection method | |
| CN206250767U (en) | The control device and DC micro power grid system of direct-current grid | |
| CN111693818B (en) | Distribution line protection method and device | |
| CN103199551B (en) | Layouting and parameter optimization method of a kind of mode of resonance fault current limiter | |
| Permana et al. | Impact of Photovoltaic Interconnection on Power Flow of Selayar Island Power System South Sulawesi | |
| Adeosun et al. | Investigation of the Impact of Inverter-Based Generators on Protection Schemes | |
| Li et al. | A low voltage ride-through strategy for grid-connected PV converters based on variable power point tracking method | |
| Wang et al. | A Research on the Limit Grid-integrated Scale of Renewable Energy under the Minimum Inertia Constraint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |