CN107528323A - The Optimal Configuration Method of dynamic reactive compensation device - Google Patents
The Optimal Configuration Method of dynamic reactive compensation device Download PDFInfo
- Publication number
- CN107528323A CN107528323A CN201711001724.8A CN201711001724A CN107528323A CN 107528323 A CN107528323 A CN 107528323A CN 201711001724 A CN201711001724 A CN 201711001724A CN 107528323 A CN107528323 A CN 107528323A
- Authority
- CN
- China
- Prior art keywords
- voltage
- compensation device
- reactive compensation
- dynamic reactive
- region
- 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
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- 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
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06312—Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling
-
- 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
-
- 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
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Power Engineering (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- Game Theory and Decision Science (AREA)
- Educational Administration (AREA)
- Development Economics (AREA)
- Marketing (AREA)
- Operations Research (AREA)
- Quality & Reliability (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 Optimal Configuration Method of dynamic reactive compensation device, including determine transient voltage unstability hidden danger region；Fault set is chosen, while primarily determines that the candidates of dynamic reactive compensation device；Obtain each voltage class bus transient response situation in transient voltage unstability hidden danger region；Count the capacity requirement scope of each dynamic reactive compensation device candidates；It is determined that final optimal dynamic reactive compensation device access node；Record the voltage dip amplitude of each node and duration in transient voltage unstability hidden danger region；Calculate the rate of return on investment of each candidate's capacity and choose final economic optimum dynamic reactive compensation device capacity.The inventive method considers the rate of return on investment of dynamic reactive compensation device and the stabilizing influence result to power network, therefore dynamic reactive compensation device effect can be played to greatest extent, the smaller amount of calculation under the premise of guarantee result accuracy is realized, and methodological science is reasonable, significant effect.
Description
Technical field
Present invention relates particularly to a kind of Optimal Configuration Method of dynamic reactive compensation device.
Background technology
With the development and the improvement of people's living standards of national economy technology, electric energy has become the daily production of people
With secondary energy sources essential in life, production and life to people bring endless facility.
In view of China's energy resource structure and the inverse distribution situation of load, with transferring electricity from the west to the east implementation and deeply, electricity
Force system has stepped into bulk power grid, super-pressure, long-distance transmissions epoch, and East China, northeast, Central China, Guangdong are formd in national aspect
Fujian fine jade and the large receiving-end grid of Beijing-Tianjin Hebei and Shandong five.The continuous increase of the outer power supply source ratio of large-scale receiving end power network, load level it is quick
Increase and the increasingly complication of part throttle characteristics makes Voltage-stabilizing Problems become increasingly conspicuous.With STATCOM (static
Synchronous compensator, STATCOM) be representative dynamic reactive compensation device, by than traditional reactive-load compensation fill
Put response speed faster, performance more preferably advantage, the application in power network is more and more extensive.But higher it is configured in view of it
How this, optimize dynamic passive compensation allocation plan, to give full play to the effect of dynamic reactive compensation device, has great show
Sincere justice.
And the existing reactive power compensation ability method based on static voltage stability analysis does not account for dynamic passive compensation
The optimal effect of device in failure dynamic process；Based on modulus of impedance margin index (impedance modulus margin
Index, IMMI), the Transient Voltage Stability of trace sensitivity index (trajectory sensitivity index, TSI) etc.
The problem of analysis optimization scheme generally existing amount of calculation is excessive, and most of do not account for probability of happening in modern power network and continue
Increased voltage dip massive losses to caused by sensitive load；The existing probability statistics model in view of voltage dip risk
There is also operand it is larger the problem of, and it is steady to transient voltage not account for different load model under power network difference running status
The influence of setting analysis result, cause the not comprehensive of final result.
The content of the invention
It is an object of the invention to provide one kind can play dynamic reactive compensation device effect, and science to greatest extent
Rationally, the Optimal Configuration Method of the dynamic reactive compensation device of significant effect.
The Optimal Configuration Method of this dynamic reactive compensation device provided by the invention, comprises the following steps：
S1. according to the electric network composition of survey region and the reactive power compensator installed, determine temporary in survey region
State Voltage Instability hidden danger region；
S2. the line load in transient voltage unstability hidden danger region that simulation analysis step S1 is determined, outlet line load
The circuit list of overrate 80.0%, and weight trend line fault composition fault set is chosen in obtained circuit list,
Simultaneously according to the setting principle of dynamic reactive compensation device, the candidate of dynamic reactive compensation device is primarily determined that in hidden danger region
Access point；
S3. according to survey region under different running statuses corresponding induction motor load scale model, testing procedure
S2 determine fault set in it is faulty in the case of transient voltage unstability hidden danger region each voltage class bus transient response feelings
Condition；
S4. each voltage class bus transient state in transient voltage unstability hidden danger region in the case of the failure obtained according to step S3
Response condition, dynamic reactive compensation device is installed respectively in the candidates for the dynamic reactive compensation device that step S2 is determined
When, in the case of obtaining different load model, different faults using trial and error procedure, ensure to install needed for survey region Transient Voltage Stability
Reactive compensation capacity, while count the capacity requirement scope of each dynamic reactive compensation device candidates；
S5. according to the capacity requirement scope of the obtained each dynamic reactive compensation device candidates of step S4, select
The minimum access node of reactive compensation capacity range of needs, and determine that it is the access node of final dynamic reactive compensation device；
S6. the access node determined according to step S5, chooses common in some groups of industrial productions out of capacity range of needs
Capacity as candidate's capacity, while record under each candidate's capacity situation, in the case of institute is faulty in fault set, transient voltage
The voltage dip amplitude of each node and duration in unstability hidden danger region；
S7. according to the obtained voltage dip amplitudes of step S6 and duration, the investment repayment of each candidate's capacity is calculated
Rate, so as to choose rate of return on investment highest capacity as final dynamic reactive compensation device capacity.
Transient voltage unstability hidden danger region in determination survey region described in step S1, specially based on survey region
Electric network composition and the reactive power compensator installed, analyze the voltage under summer maximum operational mode and winter maximum operational mode
Distribution situation and the active power and reactive power in internal various regions section transmission situation, so as to by low-voltage region and idle scarce greatly
The power network receiving end of mouth is defined as transient voltage unstability hidden danger region.
Reactive compensation capacity is obtained using trial and error procedure described in step S4, reactive-load compensation is specially carried out using following rule
The examination of capacity is gathered：Reactive compensation capacity must assure that in fault set after the faulty generation of institute, in transient voltage unstability hidden danger region
Voltage recovers most slow bus in all 500kV, 220kV, 110kV, 35kV buses, and its voltage can return after failure generation in 1s
It is raised to 0.75p.u..
The rate of return on investment of each candidate's capacity of calculating described in step S7, specially calculated and invested back using following formula
Report rate ROI：
ROI is rate of return on investment in formula, R0For the year voltage dip failure costs before installing dynamic reactive compensation device, RS
For the year voltage dip failure costs after installing reactive power compensator, I is the investment cost of installing reactive power compensator.
Described year voltage dip failure costs, for (accident in fault set is crucial thing with the accident in fault set
Therefore) under the expense sum that temporarily drops in year of each bus replace actual temporary drop expense to obtain.
Described year voltage dip failure costs, is specially calculated using equation below：
R is year voltage dip failure costs in formula, and N is year voltage dip number, and n is that fault type is total, PiFor the i-th class
Voltage dip number caused by failure accounts for the ratio for temporarily dropping number in year, EiFor the voltage dip failure costs under the i-th class failure.
The investment cost of described installing reactive power compensator, is specially calculated using following formula：
I=ρ (γ × f+ δ × q)
I is the investment cost of installing reactive power compensator in formula；ρ is rate of return on investment；γ is whether to install dynamic reactive
The mark of compensation device, is 1 during installing, is 0 when not installing；F is equipment installation cost；δ is the unit price of apparatus；Q is dress
If the capacity of dynamic reactive compensation device.
Voltage dip failure costs E under the i-th described class failurei, specially calculated using following formula：
In formula m be survey region in all 500kV, 220kV, 110kV, 35kV buses sum, EijFor in survey region
Voltage dip failure costs at j-th of bus, and EijCalculation formula beK is single
The maximum economic loss value of secondary voltage dip, σ2For sensitivity coefficient (being 0.3 according to actual conditions value), QijFor the i-th class failure
The voltage dip order of severity at lower j-th of bus.
Described voltage dip order of severity Qij, specially it is calculated using following steps：
1) coordinate diagram is drawn using time T as abscissa, by ordinate of voltage U；With u=Umax(equipment voltage is resistant to amplitude
Maximum), u=Umin(equipment voltage is resistant to the minimum value of amplitude), t=Tmax(equipment voltage is resistant to the maximum of duration
Value) and t=Tmin(equipment voltage is resistant to the minimum value of duration) makees four straight lines, so as to which the first quartile of coordinate diagram be divided
Into following three region：
Normal area：Abscissa t is less than or equal to TminOr ordinate u is more than or equal to UmaxRegion；
Faulty section：Ordinate u is less than or equal to UminAnd abscissa t is more than or equal to TmaxRegion；
Confusion region：Remove the remaining area of normal area and faulty section；
The described voltage tolerance duration be defined as from failure occur required during to voltage recovery to 0.9p.u. when
Between, voltage dip amplitude is defined as the average value of voltage effective value in the voltage dip duration.
2) voltage dip order of severity Q is calculated according to following ruleij：
Define UijFor the voltage dip amplitude at j-th of bus under the i-th class failure, TijIt is female for j-th under the i-th class failure
The voltage tolerance duration at line,
If Uij、TijThe normal area of coordinate diagram is fallen into, then Qij=0；
If Uij、TijThe faulty section of coordinate diagram is fallen into, then Qij=1；
If Uij、TijThe confusion region of coordinate diagram is fallen into, then
Described UmaxValue be 0.9p.u.；UminValue be 0.6p.u.；TmaxValue be 600ms；TminTake
It is worth for 20ms.
The Optimal Configuration Method of this dynamic reactive compensation device provided by the invention, dynamic nothing can be played to greatest extent
Reactive power compensation installations act on, and scientific and reasonable, significant effect；It take into account different running method and correspond to different load scale model
Influence to Transient stability analysis result, the voltage dip that probability of happening continues to increase in modern power network are made to sensitive load
Into massive losses, and dynamic reactive compensation device height is into the importance of rate of return on investment under the present context, while realizes guarantor
The smaller amount of calculation under the premise of result accuracy is demonstrate,proved, possesses practicality and superiority from theoretical and engineering viewpoint.
Brief description of the drawings
Fig. 1 is the flow chart of the inventive method.
Fig. 2 is the state region schematic diagram of the voltage dip order of severity in the inventive method.
Embodiment
It is the flow chart of the inventive method as shown in Figure 1：The optimization of this dynamic reactive compensation device provided by the invention
Collocation method, comprise the following steps：
S1. according to the electric network composition of survey region and the reactive power compensator installed, determine temporary in survey region
State Voltage Instability hidden danger region；Electric network composition specially based on survey region and the reactive power compensator installed, analyze the summer
Season maximum operational mode and voltage's distribiuting situation and the active power and nothing in internal various regions section under winter maximum operational mode
Work(power transmission situation, so as to which the power network receiving end of low-voltage region and big idle breach is defined as into transient voltage unstability hidden danger area
Domain.
S2. the transient voltage unstability hidden danger region line related load that simulation analysis step S1 is determined, outlet line load
The circuit list of overrate 80.0%, and weight trend line fault composition fault set is chosen in circuit list, while root
According to the setting principle of dynamic reactive compensation device, candidate's access of dynamic reactive compensation device is primarily determined that in hidden danger region
Point；
S3. according to survey region under different running statuses corresponding induction motor load scale model, testing procedure
S2 determine fault set in it is faulty in the case of transient voltage unstability hidden danger region each voltage class bus transient response feelings
Condition；
S4. each voltage class bus transient state in transient voltage unstability hidden danger region in the case of the failure obtained according to step S3
Response condition, dynamic reactive compensation device is installed respectively in the candidates for the dynamic reactive compensation device that step S2 is determined
When, in the case of obtaining different load model, different faults using trial and error procedure, ensure to install needed for survey region Transient Voltage Stability
Reactive compensation capacity, while count the capacity requirement scope of each dynamic reactive compensation device candidates；
When examination is gathered, reactive compensation capacity must assure that in fault set after the faulty generation of institute, transient voltage unstability hidden danger area
Voltage recovers most slow bus in all 500kV, 220kV, 110kV, 35kV buses in domain, its voltage can after failure generation 1s
Inside go back up to 0.75p.u..
S5. according to the capacity requirement scope of the obtained each dynamic reactive compensation device candidates of step S4, wherein
The minimum access node of reactive compensation capacity range of needs is to install the optimal node of effect, is defined as final dynamic reactive and mends
Repay the access node of device；
S6. the access node determined according to step S5, chooses common in some groups of industrial productions out of capacity range of needs
Capacity as candidate's capacity, while record under each candidate's capacity situation, in the case of institute is faulty in fault set, transient voltage
The voltage dip amplitude of each node and duration in unstability hidden danger region；
S7. according to the obtained voltage dip amplitudes of step S6 and duration, the investment repayment of each candidate's capacity is calculated
Rate, so as to choose rate of return on investment highest capacity as final dynamic reactive compensation device capacity；
Rate of return on investment, rate of return on investment ROI is specially calculated using following formula：
ROI is rate of return on investment in formula, R0For the year voltage dip failure costs before installing dynamic reactive compensation device, RS
For the year voltage dip failure costs after installing reactive power compensator, I is the investment cost of installing reactive power compensator；Year voltage
Temporarily drop failure costs temporarily drops expense in year with each bus under the accident (accident in fault set is crucial accident) in fault set
Sum replaces actual temporary drop expense to obtain, and can be specifically calculated using equation below：
R is year voltage dip failure costs in formula, and N is year voltage dip number, and n is that fault type is total, PiFor the i-th class
Voltage dip number caused by failure accounts for the ratio for temporarily dropping number in year, EiFor the voltage dip failure costs under the i-th class failure；
The investment cost of reactive power compensator is installed, is specially calculated using following formula：
I=ρ (γ × f+ δ × q)
I is the investment cost of installing reactive power compensator in formula；ρ is rate of return on investment；γ is whether to install dynamic reactive
The mark of compensation device, is 1 during installing, is 0 when not installing；F is equipment installation cost；δ is the unit price of apparatus；Q is dress
If the capacity of dynamic reactive compensation device；
Voltage dip failure costs E under i-th class failurei, specially calculated using following formula：
In formula m be survey region in all 500kV, 220kV, 110kV, 35kV buses sum, EijFor in survey region
Voltage dip failure costs at j-th of bus, and EijCalculation formula beK is single
The maximum economic loss value of secondary voltage dip, σ2For sensitivity coefficient (being 0.3 according to actual conditions value), QijFor the i-th class failure
The voltage dip order of severity at lower j-th of bus.
Voltage dip order of severity Qij, specifically it is calculated using following steps：
1) coordinate diagram is drawn using time T as abscissa, by ordinate of voltage U；With u=Umax(equipment voltage is resistant to amplitude
Maximum), u=Umin(equipment voltage is resistant to the minimum value of amplitude), t=Tmax(equipment voltage is resistant to the maximum of duration
Value) and t=Tmin(equipment voltage is resistant to the minimum value of duration) makees four straight lines, so as to which the first quartile of coordinate diagram be divided
Into following three region：
Normal area：Abscissa t is less than or equal to TminOr ordinate u is more than or equal to UmaxRegion；
Faulty section：Ordinate u is less than or equal to UminAnd abscissa t is more than or equal to TmaxRegion；
Confusion region：Remove the remaining area of normal area and faulty section；
The described voltage tolerance duration be defined as from failure occur required during to voltage recovery to 0.9p.u. when
Between, voltage dip amplitude is defined as the average value of voltage effective value in the voltage dip duration.
2) voltage dip order of severity Q is calculated according to following ruleij：
Define UijFor the voltage dip amplitude at j-th of bus under the i-th class failure, TijIt is female for j-th under the i-th class failure
The voltage tolerance duration at line,
If Uij、TijThe normal area of coordinate diagram is fallen into, then Qij=0；
If Uij、TijThe faulty section of coordinate diagram is fallen into, then Qij=1；
If Uij、TijThe confusion region of coordinate diagram is fallen into, then
U during specific implementationmaxValue be 0.9p.u.；UminValue be 0.6p.u.；TmaxValue be 600ms；Tmin
Value be 20ms.
Claims (10)
1. a kind of Optimal Configuration Method of dynamic reactive compensation device, comprises the following steps：
S1. according to the electric network composition of survey region and the reactive power compensator installed, the transient state electricity in survey region is determined
Press unstability hidden danger region；
S2. the transient voltage unstability hidden danger region line related load that simulation analysis step S1 is determined, outlet line load exceed
The circuit list of rated value 80.0%, and weight trend line fault composition fault set is chosen in obtained circuit list, simultaneously
According to the setting principle of dynamic reactive compensation device, candidate's access of dynamic reactive compensation device is primarily determined that in hidden danger region
Point；
S3. according to survey region, corresponding induction motor load scale model, testing procedure S2 are true under different running statuses
In fixed fault set it is faulty in the case of transient voltage unstability hidden danger region each voltage class bus transient response situation；
S4. each voltage class bus transient response in transient voltage unstability hidden danger region in the case of the failure obtained according to step S3
Situation, when the candidates for the dynamic reactive compensation device that step S2 is determined install dynamic reactive compensation device respectively, adopt
In the case of obtaining different load model, different faults with trial and error procedure, ensure the nothing of installing needed for survey region Transient Voltage Stability
Work(compensation capacity, while count the capacity requirement scope of each dynamic reactive compensation device candidates；
S5. according to the capacity requirement scope of the obtained each dynamic reactive compensation device candidates of step S4, select idle
The minimum access node of compensation capacity range of needs simultaneously determines that it is the access node of final dynamic reactive compensation device；
S6. the access node determined according to step S5, some groups of candidate's capacity are chosen out of capacity range of needs, while recorded each
Under individual candidate's capacity situation, in fault set institute it is faulty in the case of, the voltage of each node is temporary in transient voltage unstability hidden danger region
Range of decrease value and duration；
S7. according to the obtained voltage dip amplitudes of step S6 and duration, the rate of return on investment of each candidate's capacity is calculated, from
And rate of return on investment highest capacity is chosen as final dynamic reactive compensation device capacity.
2. the Optimal Configuration Method of dynamic reactive compensation device according to claim 1, it is characterised in that described in step S1
Determination survey region in transient voltage unstability hidden danger region, specially the electric network composition based on survey region and installed
Reactive power compensator, analyze summer maximum operational mode and the voltage's distribiuting situation under winter maximum operational mode and internal various regions
Active power and reactive power the transmission situation in section, so as to which the power network receiving end of low-voltage region and big idle breach be defined as
Transient voltage unstability hidden danger region.
3. the Optimal Configuration Method of dynamic reactive compensation device according to claim 2, it is characterised in that described in step S4
Reactive compensation capacity is obtained using trial and error procedure, the examination for specially carrying out reactive compensation capacity using following rule is gathered：Idle benefit
Repay after capacity must assure that in fault set the faulty generation of institute, all 500kV, 220kV in transient voltage unstability hidden danger region,
Voltage recovers most slow bus in 110kV, 35kV bus, and its voltage can go back up to 0.75p.u. after failure generation in 1s.
4. the Optimal Configuration Method of dynamic reactive compensation device according to claim 3, it is characterised in that described in step S7
The each candidate's capacity of calculating rate of return on investment, rate of return on investment ROI is specially calculated using following formula：
<mrow>
<mi>R</mi>
<mi>O</mi>
<mi>I</mi>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>R</mi>
<mn>0</mn>
</msub>
<mo>-</mo>
<msub>
<mi>R</mi>
<mi>S</mi>
</msub>
</mrow>
<mi>I</mi>
</mfrac>
</mrow>
ROI is rate of return on investment in formula, R0For the year voltage dip failure costs before installing dynamic reactive compensation device, RSFor dress
If the year voltage dip failure costs after reactive power compensator, I is the investment cost of installing reactive power compensator.
5. the Optimal Configuration Method of dynamic reactive compensation device according to claim 4, it is characterised in that described year electricity
Failure costs temporarily drops in pressure, is to replace actual temporary drop expense to obtain temporarily to drop expense sum the year of each bus under the accident in fault set
Arrive.
6. the Optimal Configuration Method of dynamic reactive compensation device according to claim 5, it is characterised in that described year electricity
Failure costs temporarily drops in pressure, is specially calculated using equation below：
<mrow>
<mi>R</mi>
<mo>=</mo>
<mi>N</mi>
<mo>&times;</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<mrow>
<mo>(</mo>
<msub>
<mi>P</mi>
<mi>i</mi>
</msub>
<mo>&times;</mo>
<msub>
<mi>E</mi>
<mi>i</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
R is year voltage dip failure costs in formula, and N is year voltage dip number, and n is that fault type is total, PiFor the i-th class failure
Caused voltage dip number accounts for the ratio for temporarily dropping number in year, EiFor the voltage dip failure costs under the i-th class failure.
7. the Optimal Configuration Method of dynamic reactive compensation device according to claim 6, it is characterised in that described installing
The investment cost of reactive power compensator, specially it is calculated using following formula：
I=ρ (γ × f+ δ × q)
I is the investment cost of installing reactive power compensator in formula；ρ is rate of return on investment；γ is whether to install dynamic passive compensation
The mark of device, is 1 during installing, is 0 when not installing；F is equipment installation cost；δ is the unit price of apparatus；Q is dynamic for installing
The capacity of state reactive power compensator.
8. the Optimal Configuration Method of dynamic reactive compensation device according to claim 7, it is characterised in that the i-th described class
Voltage dip failure costs E under failurei, specially calculated using following formula：
<mrow>
<msub>
<mi>E</mi>
<mi>i</mi>
</msub>
<mo>=</mo>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>j</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>m</mi>
</munderover>
<msub>
<mi>E</mi>
<mrow>
<mi>i</mi>
<mi>j</mi>
</mrow>
</msub>
</mrow>
In formula m be survey region in all 500kV, 220kV, 110kV, 35kV buses sum, EijFor j-th in survey region
Voltage dip failure costs at bus, and EijCalculation formula beK is single electricity
Press the maximum economic loss value temporarily dropped, σ2For sensitivity coefficient, QijFor the voltage dip at j-th of bus in the case of the i-th class failure
The order of severity.
9. the Optimal Configuration Method of dynamic reactive compensation device according to claim 8, it is characterised in that described voltage
Temporarily drop order of severity Qij, specially it is calculated using following steps：
1) coordinate diagram is drawn using time T as abscissa, by ordinate of voltage U；With u=Umax, u=Umin, t=TmaxAnd t=
TminMake four straight lines, so as to which the first quartile of coordinate diagram is divided into following three region：
Normal area：Abscissa t is less than or equal to TminOr ordinate u is more than or equal to UmaxRegion；
Faulty section：Ordinate u is less than or equal to UminAnd abscissa t is more than or equal to TmaxRegion；
Confusion region：Remove the remaining area of normal area and faulty section；
The described voltage tolerance duration is defined as that the time required during to voltage recovery to 0.9p.u. occurs from failure,
Voltage dip amplitude is defined as the average value of voltage effective value in the voltage dip duration；The UmaxIt is defined as equipment voltage
It is resistant to the maximum of amplitude, UminIt is defined as the minimum value of equipment voltage tolerance amplitude, TmaxThe tolerance of equipment voltage is defined as to continue
The maximum of time, TminIt is defined as the minimum value of equipment voltage tolerance duration；
2) voltage dip order of severity Q is calculated according to following ruleij：
Define UijFor the voltage dip amplitude at j-th of bus under the i-th class failure, TijAt j-th of bus under the i-th class failure
Voltage is resistant to the duration,
If Uij、TijThe normal area of coordinate diagram is fallen into, then Qij=0；
If Uij、TijThe faulty section of coordinate diagram is fallen into, then Qij=1；
If Uij、TijThe confusion region of coordinate diagram is fallen into, then
10. the Optimal Configuration Method of dynamic reactive compensation device according to claim 9, it is characterised in that described Umax
Value be 0.9p.u.；UminValue be 0.6p.u.；TmaxValue be 600ms；TminValue be 20ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001724.8A CN107528323B (en) | 2017-10-24 | 2017-10-24 | Optimal configuration method of dynamic reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001724.8A CN107528323B (en) | 2017-10-24 | 2017-10-24 | Optimal configuration method of dynamic reactive power compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107528323A true CN107528323A (en) | 2017-12-29 |
| CN107528323B CN107528323B (en) | 2020-08-04 |
Family
ID=60683919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711001724.8A Active CN107528323B (en) | 2017-10-24 | 2017-10-24 | Optimal configuration method of dynamic reactive power compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107528323B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768581A (en) * | 2018-12-28 | 2019-05-17 | 国网湖南省电力有限公司 | Power grid voltage regulating and dynamic reactive support and control method for energy-accumulating power station |
| CN112834867A (en) * | 2021-01-06 | 2021-05-25 | 南京工程学院 | Optimized deployment method of wide-area synchronous intelligent sensor |
| CN113659581A (en) * | 2021-07-20 | 2021-11-16 | 广西电网有限责任公司电力科学研究院 | Voltage sag state series and parallel compensation equipment management method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457279A (en) * | 2013-09-23 | 2013-12-18 | 广东电网公司电力调度控制中心 | Determination method for partition D-STATCOM integrated optimization configuration scheme of large-scale power grid |
| CN103795068A (en) * | 2014-03-05 | 2014-05-14 | 广东电网公司电力调度控制中心 | Optimal configuration method for high-voltage distribution network dynamic reactive power compensation equipment capacity |
| CN104333019A (en) * | 2014-11-27 | 2015-02-04 | 宁波华浙电力技术有限公司 | Voltage optimizing point sorting method for 10KV overhead line reactive compensation device |
| CN105846442A (en) * | 2016-05-12 | 2016-08-10 | 广东电网有限责任公司电力科学研究院 | Reactive power compensation optimizing configuration method and reactive power compensation optimizing configuration device |
| CN105914755A (en) * | 2016-04-21 | 2016-08-31 | 广州供电局有限公司 | Electric power system dynamic reactive power optimization configuration method and system |
| CN106058876A (en) * | 2016-06-02 | 2016-10-26 | 国网山东省电力公司济南供电公司 | Dynamic reactive planning site-selection analysis method and system considering transient voltage stability |
| CN106532727A (en) * | 2016-12-13 | 2017-03-22 | 国网北京市电力公司 | Configuration method and device of installation points of dynamic reactive power compensator |
-
2017
- 2017-10-24 CN CN201711001724.8A patent/CN107528323B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457279A (en) * | 2013-09-23 | 2013-12-18 | 广东电网公司电力调度控制中心 | Determination method for partition D-STATCOM integrated optimization configuration scheme of large-scale power grid |
| CN103795068A (en) * | 2014-03-05 | 2014-05-14 | 广东电网公司电力调度控制中心 | Optimal configuration method for high-voltage distribution network dynamic reactive power compensation equipment capacity |
| CN104333019A (en) * | 2014-11-27 | 2015-02-04 | 宁波华浙电力技术有限公司 | Voltage optimizing point sorting method for 10KV overhead line reactive compensation device |
| CN105914755A (en) * | 2016-04-21 | 2016-08-31 | 广州供电局有限公司 | Electric power system dynamic reactive power optimization configuration method and system |
| CN105846442A (en) * | 2016-05-12 | 2016-08-10 | 广东电网有限责任公司电力科学研究院 | Reactive power compensation optimizing configuration method and reactive power compensation optimizing configuration device |
| CN106058876A (en) * | 2016-06-02 | 2016-10-26 | 国网山东省电力公司济南供电公司 | Dynamic reactive planning site-selection analysis method and system considering transient voltage stability |
| CN106532727A (en) * | 2016-12-13 | 2017-03-22 | 国网北京市电力公司 | Configuration method and device of installation points of dynamic reactive power compensator |
Non-Patent Citations (1)
| Title |
|---|
| 黄小庆等: "考虑电网特性的动态无功优化配置方法", 《电力自动化设备》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768581A (en) * | 2018-12-28 | 2019-05-17 | 国网湖南省电力有限公司 | Power grid voltage regulating and dynamic reactive support and control method for energy-accumulating power station |
| CN109768581B (en) * | 2018-12-28 | 2021-07-06 | 国网湖南省电力有限公司 | Power grid voltage regulation and dynamic reactive support control method for energy storage power station |
| CN112834867A (en) * | 2021-01-06 | 2021-05-25 | 南京工程学院 | Optimized deployment method of wide-area synchronous intelligent sensor |
| CN112834867B (en) * | 2021-01-06 | 2022-08-02 | 南京工程学院 | Optimized deployment method of wide-area synchronous intelligent sensor |
| CN113659581A (en) * | 2021-07-20 | 2021-11-16 | 广西电网有限责任公司电力科学研究院 | Voltage sag state series and parallel compensation equipment management method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107528323B (en) | 2020-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103414197B (en) | A kind of reactive-load compensation equipment collocation method of large-scale wind power delivery system | |
| CN101858312B (en) | System and method thereof for evaluating real-time running state of wind generating set | |
| CN104281737B (en) | A kind of wind power collection system of offshore wind power plant topological structure selection method | |
| CN102012956A (en) | Wind farm equivalent method based on wind farm input wind speed and wind direction chance fluctuation | |
| CN104009499B (en) | The unbalanced dispatching method of a kind of solution wind-electricity integration system load flow | |
| CN107528323A (en) | The Optimal Configuration Method of dynamic reactive compensation device | |
| CN102522756B (en) | Inductive reactive compensation method for power grid for avoiding voltage off-normal risks | |
| CN102801165B (en) | Automatic voltage control method considering static security | |
| CN105046584A (en) | K-MEANS algorithm-based ideal line loss rate calculation method | |
| CN102904287B (en) | Coordination control method for flexible alternate current transmission system (FACTS) devices of new energy delivery system | |
| CN111817299B (en) | Fuzzy reasoning-based intelligent identification method for line loss rate abnormal cause of power distribution station | |
| CN104156531A (en) | Fault current limiter distribution point optimization and capacity selection method taking operation loss into consideration | |
| CN104484728B (en) | A kind of power grid security comprehensive index system framework method | |
| CN108206541A (en) | A kind of distribution network electric energy quality disturbance source locating method containing distributed generation resource | |
| CN106526347A (en) | Digital-analog hybrid simulation-based photovoltaic inverter low voltage ride through evaluation method | |
| CN109921459B (en) | Active frequency control method after direct current blocking of photovoltaic high-ratio transmitting-end power grid | |
| CN105244874B (en) | A kind of meter and failure risk and the power distribution network Optimal reactive power model of cost | |
| CN103761680B (en) | Grid and provincial dispatching method and system for AC/DC interconnected large power grid with wind farm | |
| CN105375505B (en) | It is a kind of to exchange profile recognition method with direct current transient stability strong correlation | |
| Wang et al. | Large-scale wind power grid integration: technological and regulatory issues | |
| CN106485416A (en) | A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system | |
| CN110661268B (en) | Dynamic reactive power compensation requirement determining method and system for new energy collection station | |
| CN106980932A (en) | Transformer maximum load rate ranging assessments method and system | |
| CN112906172B (en) | Onshore grid-connected point optimal selection method and system for large-scale offshore wind farm | |
| CN110445128B (en) | Sensitivity-based real-time evaluation method for new energy consumption capability of regional power grid |
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 |