CN106485416A - A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system - Google Patents
A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system Download PDFInfo
- Publication number
- CN106485416A CN106485416A CN201610893638.1A CN201610893638A CN106485416A CN 106485416 A CN106485416 A CN 106485416A CN 201610893638 A CN201610893638 A CN 201610893638A CN 106485416 A CN106485416 A CN 106485416A
- Authority
- CN
- China
- Prior art keywords
- interference source
- user
- model
- power supply
- interferer models
- 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.)
- Pending
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 37
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 17
- 238000013441 quality evaluation Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 10
- 230000010349 pulsation Effects 0.000 claims description 7
- 238000003801 milling Methods 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 230000006870 function Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000000205 computational method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000000819 phase cycle Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
-
- 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
-
- 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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/80—Management or planning
- Y02P90/82—Energy audits or management systems therefor
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Economics (AREA)
- Strategic Management (AREA)
- General Physics & Mathematics (AREA)
- Development Economics (AREA)
- Health & Medical Sciences (AREA)
- Educational Administration (AREA)
- Marketing (AREA)
- Entrepreneurship & Innovation (AREA)
- Theoretical Computer Science (AREA)
- Tourism & Hospitality (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Game Theory and Decision Science (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the invention discloses a kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system, for solving special quality of power supply Pre-Evaluation software is not had on market, therefore quality of power supply Pre-Evaluation is many is completed by business software, but being designed as common software business software more, although rather than professional software that is to say, that function enrich, but specific aim is poor, lack interferer models, abatement equipment model, lead to modeling work amount big, the technical problem that the specialized capability of user is had high demands.Present invention method includes：Step 1：The interferer models of receiving user's input；Step 2：Load the described interferer models of user input, by described interferer models and preset electric network model, calculate the power quality index disturbed value that user produces；Step 3：Judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not, then printed report, if so, then receive the abatement equipment model adding in advance.
Description
Technical field
The present invention relates to electricity quality evaluation field, more particularly, to a kind of interference source user grid-connected quality of power supply Pre-Evaluation side
Method and system.
Background technology
According to national sector standard, and the related governing requirements of State Grid Corporation of China, Southern Power Grid Company, interference source use
Family should carry out quality of power supply Pre-Evaluation before accessing electrical network, to grasp it to impact issuable on electrical network after accessing and journey
Degree, judges whether it meets national standard and require.For require beyond national standard, interference source user should install the quality of power supply additional
Controlling device.
Quality of power supply Pre-Evaluation is the first link of quality of power supply technical supervision, is also most important link.Therefore, carry out
Quality of power supply Pre-Evaluation works, and is increasingly paid attention to by power supply enterprise.
Quality of power supply Pre-Evaluation is mainly realized by simulation calculation, and this process includes building model, the quality of power supply
Leading indicator calculating, evaluation of result etc., main carriers are exactly software for calculation.At present, market does not have the special quality of power supply pre-
Assessment software, therefore quality of power supply Pre-Evaluation are many to be completed by business software.But, business software, it is designed as common software more
(rather than professional software is that is to say, that although function is enriched, and specific aim is poor), lack interferer models, abatement equipment model
(very crucial to electricity quality evaluation), leads to modeling work amount big, the specialized capability of user is had high demands, in practical work
In (mainly power supply enterprise practitioner) be difficult to popularization and application.
Content of the invention
Embodiments provide a kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system, solve mesh
Special quality of power supply Pre-Evaluation software be there is no on front market, therefore quality of power supply Pre-Evaluation is many is completed by business software,
But being designed as common software business software more, although rather than professional software that is to say, that function is enriched, specific aim is poor, scarce
Few interferer models, abatement equipment model, lead to modeling work amount big, and the technology that the specialized capability of user has high demands is asked
Topic.
A kind of interference source user grid-connected quality of power supply Pre-Evaluation method provided in an embodiment of the present invention, including：
Step 1：The interferer models of receiving user's input；
Step 2：Load the described interferer models of user input, by described interferer models and preset electric network model,
Calculate the power quality index disturbed value of user；
Step 3：Judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not,
Then printed report, if so, then receives the abatement equipment model adding in advance.
Preferably, described step 1 specifically includes：
The connection group of the interference source type of receiving user's input, interference source capacity and/or the accessed transformator of interference source,
If more than an interference source, repeatedly receiving；
Described interference source is integrated in model library.
Preferably, described step 2 specifically includes：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out humorous
Ripple calculates；
Described Harmonics Calculation step includes：
The first step：Calculate fundamental current Ii1
Wherein, SiFor the capacity of single interference source, UNFor points of common connection rated voltage；
Second step：Call interference source harmonic-model, calculate single interference source h subharmonic current value Iih
Iih=I1×HRIh
Wherein, HRIhFor h subharmonic containing ratio, from interference source harmonic-model；
3rd step：Determine whether 3n subharmonic (n=1,2,3 ...) can flow according to interference source transformator, supply transformer
Enter points of common connection；
4th step：Carry out more than 1 interference source with subharmonic current the superposition calculation at points of common connection；
Carry out that the superposition calculation at points of common connection specifically includes with subharmonic current more than 1 interference source：
First, it is superimposed the first two, computing formula is as follows：
When having three and above harmonic source, then first it is superimposed the first two, is then overlapped with the 3rd harmonic current again,
Wherein KhFor being superimposed coefficient.
Preferably, described step 2 specifically includes：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out electricity
Pressure fluctuation and flickering calculate.
Preferably, described step 2 specifically includes：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out three
Phase degree of unbalancedness calculates.
Preferably, described step 3 specifically includes：
Judge whether the described power quality index disturbed value of user exceedes described power quality index limit value, if it is not, then
Printed report, if so, then milling train and arc furnace equipment receive the automatic switching capacitor bank with reactance, and commutator is set with converter
The standby automatic switching capacitor bank with reactance for the reception, electric railway load receives the automatic switching capacitor bank with reactance, city
Track traffic load in city's receives SVC or SVG device.
A kind of interference source user grid-connected quality of power supply Pre-Evaluation system provided in an embodiment of the present invention, including historical report list
Unit, also includes：
Model database management unit, for integrated interferer models and abatement equipment model, the interference source of receiving user's input
Model and abatement equipment model, and support self-defined interferer models and self-defined abatement equipment model；
Electricity quality evaluation unit, for loading the described interferer models of user input, by described interferer models
With preset electric network model, calculate the power quality index disturbed value of user, and judge the described power quality index disturbance of user
Whether value exceedes power quality index limit value, if it is not, then by described historical report unit printed report, if so, then passing through institute
State model database management unit, receive the abatement equipment model adding in advance.
Preferably, described model database management unit, for integrated interferer models and abatement equipment model；Wherein interference source
Model includes harmonic-model and supports self-defined interferer models and self-defined abatement equipment model.
Preferably,
Described electricity quality evaluation unit, for loading the described interferer models of user input, by described interference source
Model and preset electric network model, carry out harmonic wave and/or voltage pulsation and/or flickering and/or tri-phase unbalance factor calculates, and judge
Whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not, then passing through described historical report
Unit printed report, if so, then passes through described model database management unit, receives the abatement equipment model adding in advance.
Preferably,
Described electricity quality evaluation unit, for loading the described interferer models of user input, by described interference source
Model and preset electric network model, calculate the power quality index disturbed value of user, and judge the described power quality index of user
Whether disturbed value exceedes power quality index limit value, if it is not, then by described historical report unit printed report, if so, then leading to
Cross described model database management unit, milling train and arc furnace equipment receive the automatic switching capacitor bank with reactance；Commutator and change
Frequency device equipment receives the automatic switching capacitor bank with reactance；Electric railway load receives the automatic switching capacitor with reactance
Group；Urban track traffic load receives SVC or SVG device.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system provided in an embodiment of the present invention, wherein method
Including：Step 1：The interferer models of receiving user's input；Step 2：Load the described interferer models of user input, by institute
State interferer models and preset electric network model, calculate the power quality index disturbed value of user；Step 3：Judge that user's is described
Whether power quality index disturbed value exceedes described power quality index limit value, if it is not, then printed report, if so, then receives pre-
The abatement equipment model first adding.By the interferer models of receiving user's input；Load the described interference source mould of user input
Type, by described interferer models and preset electric network model, calculates the power quality index disturbed value of user；Judge the institute of user
State whether power quality index disturbed value exceedes power quality index limit value, if it is not, then printed report, if so, then receive in advance
The abatement equipment model adding, solves and does not have special quality of power supply Pre-Evaluation software on market, the therefore quality of power supply is commented in advance
Estimate many completed by business software, but be designed as common software business software more, rather than professional software be that is to say, that function
Although abundant, specific aim is poor, lacks interferer models, abatement equipment model, leads to modeling work amount big, special to user
The high technical problem of industry competency profiling.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used
So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is an a kind of enforcement of interference source user grid-connected quality of power supply Pre-Evaluation method provided in an embodiment of the present invention
The schematic flow sheet of example；
Fig. 2 is another reality of a kind of interference source user grid-connected quality of power supply Pre-Evaluation method provided in an embodiment of the present invention
Apply the schematic flow sheet of example；
Fig. 3 is an a kind of enforcement of interference source user grid-connected quality of power supply Pre-Evaluation system provided in an embodiment of the present invention
The structural representation of example.
Specific embodiment
Embodiments provide a kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system, for solving
Special quality of power supply Pre-Evaluation software be there is no on existing market, by business software Lai complete therefore more than quality of power supply Pre-Evaluation
Become, be designed as common software business software more, although rather than professional software that is to say, that function is enriched, but specific aim is poor,
Lack interferer models, abatement equipment model, lead to modeling work amount big, the technology that the specialized capability of user has high demands is asked
Topic.
For enabling the goal of the invention of the present invention, feature, advantage more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described it is clear that disclosed below to the technical scheme in the embodiment of the present invention
Embodiment be only a part of embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of not making creative work, broadly falls into present invention protection
Scope.
Refer to Fig. 1, the one of a kind of interference source user grid-connected quality of power supply Pre-Evaluation method provided in an embodiment of the present invention
Individual embodiment includes：
101st, the interferer models of receiving user's input；
102nd, load the described interferer models of user input, by described interferer models and preset electric network model, count
Calculate the power quality index disturbed value of user；
103rd, judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not, then
Execution step 104, if so, then execution step 105；
104th, printed report；
105th, receive the abatement equipment model adding in advance.
The above is that the process to interference source user grid-connected quality of power supply Pre-Evaluation method is described in detail, below to each
Step detailed process is described in detail, and refers to Fig. 2, a kind of interference grid-connected electric energy of source user provided in an embodiment of the present invention
Another embodiment of quality Pre-Evaluation method includes：
201st, the connection of the interference source type of receiving user's input, interference source capacity and/or the accessed transformator of interference source
Group, if more than an interference source, repeatedly receive；
Set up the key that interferer models are electricity quality evaluations, (interference source is integrated in model to add interference source type
In storehouse, can be with we selected typical model or self-definition model), interference source capacity, interference source accessed transformator (if there is)
Connection group.If there are multiple interference sources, then repeatedly add.
202nd, load the described interferer models of user input, by described interferer models and preset electric network model, count
Calculate the power quality index disturbed value of user；
Set up electric network model, need parameter to include：Points of common connection electric pressure (UN), the minimum short circuit of points of common connection holds
Amount (Sc), supply transformer capacity (St), (Y type or D type, if Y type also will select the connection group of transformator points of common connection side
Select whether neutral point is grounded), electricity quality evaluation unit loads interference source type, interference source capacity or the interference of user input
The connection group of the accessed transformator in source, by described interferer models and preset electric network model, calculates the quality of power supply of user
Index disturbed value.
203rd, judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not, then
Execution step 204, if so, then execution step 205；
204th, printed report；
205th, receive the abatement equipment model adding in advance.
Power quality index limit value is to be calculated according to national standard, power quality index disturbed value result of calculation and electricity
Quality index limit value can compare, judge whether the interference that user produces meets national standard and require.If be unsatisfactory for it is necessary to
Plus abatement equipment is so as to meet, if it is satisfied, then historical report unit printed report.
With a concrete application scene, Fig. 2 embodiment is described below, application examples includes：
The interferer models of receiving user's input；
(interference source is integrated in model library the interference source type of model database management unit receiving user's input, permissible
We selected typical model or self-definition model), interference source capacity, the connection group of interference source accessed transformator (if there is).
If there are multiple interference sources, then repeatedly add.
Load the described interferer models of user input, by described interferer models and preset electric network model, calculate and use
The power quality index disturbed value at family；
Load the described interferer models of user input, (interference source is collection by the interference source type of receiving user's input
Become in model library, can be with we selected typical model or self-definition model), interference source capacity, the accessed transformator of interference source
The connection group of (if there is), if there are multiple interference sources, then repeatedly adds.And pass through parameter for points of common connection electric pressure
(UN), points of common connection minimum capacity of short circuit (Sc), supply transformer capacity (St), the connection group of transformator points of common connection side
The electric network model of not (Y type or D type, if whether Y type neutral point also to be selected is grounded), the power quality index calculating user is disturbed
Dynamic value.
According to national standard, the circular of harmonic limits is as follows (entirely by reference to the related bar of standard GB 14549
Money)：
When minimum capacity of short circuit at points of common connection is different from benchmark capacity of short circuit, inject the always humorous of points of common connection
The conversion of ripple electric current permissible value sees below formula：
In formula：
Sc：The minimum capacity of short circuit of points of common connection, MVA；
Sk2：On the basis of capacity of short circuit, MVA
Ihp：H subharmonic current permissible value in regulation, A；
Ih：Capacity of short circuit is Sk1When h subharmonic current permissible value, A.
Allowable harmonic current to the single interference source at points of common connection, must also be allocated according to the following formula.According to
GB, the allowable harmonic current that single interference source injects points of common connection is calculated as follows：
Ihi=Ih(Si/St)1/α
In formula, IhNode h subharmonic current permissible value, A；
SiThe electricity consumption protocol capacity of interference source, MVA；
StThe power supply unit capacity of points of common connection, MVA；
α Phase Stacking coefficient, according to the form below value；
The Phase Stacking coefficient # of table 1 harmonic wave
The circular of voltage fluctuation and flicker limit value is following (entirely by reference to standard GB 12326 relevant provision)：
The long-time flickering that fluctuating load individually causes must be less than the flickering permissible value of distribution, and it is grid-connected that each interference source presses it
Protocol capacityWith total power supply capacity StRatio it is considered to upper level impact (next that next stage flickering is transmitted
Level is typically ignored to the transmission of upper level) etc. determine the flickering limit value of this interference source after factor, computational methods are as follows：
Obtain total limit value G of the whole loads generation flickerings being connected to PCC point first：
In formula：
LP：Long-time flickering value P of PCC point corresponding voltage gradeltLimit value；
LH：Long-time flickering value P of a upper electric pressureltLimit value；
T：A upper electric pressure is to the flickering carry-over factor of next electric pressure it is recommended that being 0.8；Do not consider supertension
(EHV) system is transmitted to the flickering of next stage electrical voltage system.
The flickering limit value E of unique useriFor：
In formula：
F：Coefficient while fluctuating load, its representative value F=0.2～0.3 (but it must is fulfilled for Si/F≤St)
The circular of voltage pulsation limit value is as follows：
According to points of common connection electric pressure, interference source fluctuation frequency, determine corresponding limit value (for example, certain disturbance load
Fluctuate 9 times per hour, electric pressure is 10kV, then limit value is 3%)
Non-equilibrium among three phase voltages limit value computational methods are as follows：
Close clause entirely by reference to standard GB 15543, whether be short-term load (duty) according to load, select limit value, that is, be connected to public
Each user of junction point causes this negative sequence voltage degree of unbalancedness permissible value to be generally 1.3%, is less than 2.6% in short-term.
The circular of harmonic disturbance value is as follows：
Single interference source computational methods include：
The first step：Calculate fundamental current Ii1.
Wherein, SiCapacity (MVA) for single interference source, UNFor points of common connection rated voltage
Second step：Call interference source harmonic-model, calculate single interference source h subharmonic current value Iih
Iih=I1×HRIh
Wherein, HRIhFor h subharmonic containing ratio, from interference source harmonic-model
3rd step：Determine whether 3n subharmonic (n=1,2,3 ...) can flow according to interference source transformator, supply transformer
Enter points of common connection.
Multiple interference source Superposition Calculation Methods include：
The method recommended according to GB, the same subharmonic current calculating multiple interference sources is superimposed at points of common connection.First
First, it is superimposed the first two, computing formula is as follows：
If there are three and above harmonic source, then first it is superimposed the first two, is then superimposed with the 3rd harmonic current, with this again
Analogize.
KhFor being superimposed coefficient, referring to table 1.
Voltage pulsation and flickering disturbance value calculating method include：
Transfer interference source voltage pulsation model, the method recommended according to GB, calculate the voltage wave that single interference source produces
Dynamic：
Wherein, △ SiFor power waves momentum, SCFor points of common connection capacity of short circuit.
If there are multiple interference sources, take maximum, weigh the voltage pulsation to points of common connection for this user.
The computational methods of tri-phase unbalance factor disturbed value include：
Negative phase-sequence power system being caused for single phase industrial frequence AC load affects, standard GB/T/T15543-2008
《Quality of power supply imbalance of three-phase voltage》Describe the calculating formula of degree of unbalancedness, that is, set positive sequence impedance and the negative phase-sequence of points of common connection
Impedance is equal, then negative sequence voltage degree of unbalancedness is：
Wherein, I2For negative-sequence current virtual value, unit is (A)；ScFor the three-phase shortcircuit capacity of points of common connection, unit is
Volt-ampere (VA)；UNFor rated voltage, unit is volt (V).
Judge whether the described power quality index disturbed value of user exceedes described power quality index limit value, if it is not, then
Printed report, if so, then receives the abatement equipment model adding in advance.
Judge whether the described power quality index disturbed value of user exceedes described power quality index limit value, if it is not, then
Printed report, is if so, then directed to particular problem and configures controlling device, concrete configuration strategy is milling train and arc furnace equipment mainly adds
The automatic switching capacitor bank with reactance for the dress, for fluctuating, especially violent situation installs SVC (Static Var additional
Compensator, SVC) or SVG (Static Var Generator, static reacance generator) etc. is dynamic mends
Repay device；Commutator and frequency converter equipment mainly install the automatic switching capacitor bank with reactance additional, install SVG additional for higher hamonic wave
Or the compensation device such as APF (Active Power Filter, Active Power Filter-APF)；Electric railway load mainly installs band additional
The automatic switching capacitor bank of reactance；Urban track traffic load mainly installs SVC or SVG device additional.
Refer to Fig. 3, the one of a kind of interference source user grid-connected quality of power supply Pre-Evaluation system provided in an embodiment of the present invention
Individual embodiment, including：
Model database management unit 301, for integrated interferer models and abatement equipment model, the interference of receiving user's input
Source model and abatement equipment model, and support self-defined interferer models and self-defined abatement equipment model；
Electricity quality evaluation unit 302, for loading the described interferer models of user input, by described interference source mould
Type and preset electric network model, calculate the power quality index disturbed value of user, and judge that the described power quality index of user is disturbed
Whether dynamic value exceedes power quality index limit value, if it is not, then by described historical report unit printed report, if so, then passing through
Described model database management unit, the described abatement equipment model of receiving user's input；
Historical report unit 303, when the power quality index disturbed value of user is less than power quality index limit value, goes through
History reporting unit 303 printed report.
Further, described model database management unit 301, for integrated interferer models and abatement equipment model, receives
The connection group of the interference source type of user input, interference source capacity and/or the accessed transformator of interference source, if dry more than one
Disturb source, then repeatedly receive, and abatement equipment model, and support self-defined interferer models and self-defined abatement equipment model.
The major function of model database management unit 301 is to realize the management of common interference source model, is integrated with electric arc furnace, rectification
The common interference source classical model such as device, converter, electric railway, urban track traffic, and support self-definition model.
The secondary function of model database management unit 301 is to realize abatement equipment model management, is integrated with passive filter, has
The typical abatement equipment such as source filter, SVC, and support self-definition model.
Further,
Electricity quality evaluation unit 302, for loading the described interferer models of user input, by described interference source mould
Type and parameter are points of common connection electric pressure, points of common connection minimum capacity of short circuit, supply transformer capacity, transformator are public
The other electric network model of connection group of junction point side, the harmonic wave of calculating user and/or voltage pulsation and/or flickering and/or three-phase are not
The disturbed value of degree of balance, and judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if
No, then by described historical report unit 303 printed report, if so, then pass through described model database management unit 301, receive and use
The abatement equipment model of family input.
Further,
Electricity quality evaluation unit 302, for loading the described interferer models of user input, by described interference source mould
Type and preset electric network model, calculate the power quality index disturbed value of user, and judge the described power index disturbed value of user
Whether exceed power quality index limit value, if it is not, then by described historical report unit 303 printed report, if so, then passing through institute
State model database management unit 301, milling train and arc furnace equipment receive the automatic switching capacitor bank with reactance；Commutator and frequency conversion
Device equipment receives the automatic switching capacitor bank with reactance；Electric railway load receives the automatic switching capacitor with reactance
Group；Urban track traffic load receives SVC or SVG device.
A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system provided in an embodiment of the present invention, wherein method
Including：Step 1：The interferer models of receiving user's input；Step 2：Load the described interferer models of user input, by institute
State interferer models and preset electric network model, calculate the power quality index disturbed value of user；Step 3：Judge that user's is described
Whether power quality index disturbed value exceedes power quality index limit value, if it is not, then printed report, if so, then receives and adds in advance
Plus abatement equipment model.By the interferer models of receiving user's input；Load the described interferer models of user input, lead to
Cross described interferer models and preset electric network model, calculate the power quality index disturbed value of user；Judge the described electricity of user
Power quality index limit value whether can be exceeded by quality index disturbed value, if it is not, then printed report, if so, then receive and add in advance
Abatement equipment model, solve and special quality of power supply Pre-Evaluation software do not had on market, therefore quality of power supply Pre-Evaluation is many
Completed by business software, business software, be designed as common software more, although rather than professional software is that is to say, that function
Abundant, but specific aim is poor, lacks interferer models, abatement equipment model, leads to modeling work amount big, the specialty element to user
The technical problem that matter has high demands.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
Device and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
It should be understood that disclosed system in several embodiments provided herein, apparatus and method are permissible
Realize by another way.For example, device embodiment described above is only schematically, for example, described unit
Divide, only a kind of division of logic function, actual can have other dividing mode when realizing, for example multiple units or assembly
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not execute.Another, shown or
The coupling each other discussing or direct-coupling or communication connection can be by some interfaces, the indirect coupling of device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The described unit illustrating as separating component can be or may not be physically separate, show as unit
The part showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.The mesh to realize this embodiment scheme for some or all of unit therein can be selected according to the actual needs
's.
In addition, can be integrated in a processing unit in each functional unit in each embodiment of the present invention it is also possible to
It is that unit is individually physically present it is also possible to two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be to be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If described integrated unit is realized and as independent production marketing or use using in the form of SFU software functional unit
When, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part in other words prior art being contributed or all or part of this technical scheme can be in the form of software products
Embody, this computer software product is stored in a storage medium, including some instructions with so that a computer
Equipment (can be personal computer, server, or network equipment etc.) executes the complete of each embodiment methods described of the present invention
Portion or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example only in order to technical scheme to be described, is not intended to limit；Although with reference to front
State embodiment the present invention has been described in detail, it will be understood by those within the art that：It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to wherein some technical characteristics；And these
Modification or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of interference source user grid-connected quality of power supply Pre-Evaluation method is it is characterised in that include：
Step 1：The interferer models of receiving user's input；
Step 2：Load the described interferer models of user input, by described interferer models and preset electric network model, calculate
The power quality index disturbed value of user；
Step 3：Judge whether the described power quality index disturbed value of user exceedes power quality index limit value, if it is not, then beating
Print report, if so, then receives the abatement equipment model adding in advance.
2. interference source user grid-connected quality of power supply Pre-Evaluation method according to claim 1 is it is characterised in that described step
1 specifically includes：
The connection group of the interference source type of receiving user's input, interference source capacity and/or the accessed transformator of interference source, if super
Cross an interference source, then repeatedly receive；
Described interference source is integrated in model library.
3. interference source user grid-connected quality of power supply Pre-Evaluation method according to claim 2 is it is characterised in that described step
2 specifically include：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out harmonic wave meter
Calculate；
Described Harmonics Calculation step includes：
The first step：Calculate fundamental current Ii1
Wherein, SiFor the capacity of single interference source, UNFor points of common connection rated voltage；
Second step：Call interference source harmonic-model, calculate single interference source h subharmonic current value Iih
Iih=I1×HRIh
Wherein, HRIhFor h subharmonic current containing ratio, from interference source harmonic-model；
3rd step：Determine whether 3n subharmonic (n=1,2,3 ...) can flow into public affairs according to interference source transformator, supply transformer
Junction point altogether；
4th step：Carry out more than 1 interference source with subharmonic current the superposition calculation at points of common connection；
Carry out that the superposition calculation at points of common connection specifically includes with subharmonic current more than 1 interference source：
First, it is superimposed the first two, computing formula is as follows：
When having three and above harmonic source, then first it is superimposed the first two, is then overlapped with the 3rd harmonic current, wherein again
KhFor being superimposed coefficient.
4. interference source user grid-connected quality of power supply Pre-Evaluation method according to claim 2 is it is characterised in that described step
2 specifically include：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out voltage wave
Dynamic and flickering calculates.
5. interference source user grid-connected quality of power supply Pre-Evaluation method according to claim 2 is it is characterised in that described step
2 specifically include：
Load the described interferer models of user input, by described interferer models and preset electric network model, carry out three-phase not
Degree of balance calculates.
6. interference source user grid-connected quality of power supply Pre-Evaluation method according to claim 1 is it is characterised in that described step
3 specifically include：
Judge whether the power quality index disturbed value that user produces exceedes power quality index limit value, if it is not, then printed report,
If so, then milling train and arc furnace equipment receive the automatic switching capacitor bank with reactance, and commutator receives band with frequency converter equipment
The automatic switching capacitor bank of reactance, electric railway load receives the automatic switching capacitor bank with reactance, and city rail is handed over
Logical load receives SVC or SVG device.
7. a kind of interference source grid-connected family quality of power supply Pre-Evaluation system, including historical report unit it is characterised in that also wrapping
Include：
Model database management unit, for integrated interferer models and abatement equipment model, the interferer models of receiving user's input
With abatement equipment model, and support self-defined interferer models and self-defined abatement equipment model；
Electricity quality evaluation unit, for loading the described interferer models of user input, by described interferer models with advance
Put electric network model, calculate the power quality index disturbed value of user, and judge that the described power quality index disturbed value of user is
No exceed power quality index limit value, if it is not, then by described historical report unit printed report, if so, then passing through described mould
Type library management unit, receives the abatement equipment model adding in advance.
8. interference source user grid-connected quality of power supply Pre-Evaluation system according to claim 7 is it is characterised in that described model
Library management unit, for integrated interferer models and abatement equipment model, the interference source type of receiving user's input, interference source hold
Amount and/or the connection group of the accessed transformator of interference source, if more than an interference source, repeatedly receiving, and abatement equipment mould
Type, and support self-defined interferer models and self-defined abatement equipment model.
9. according to claim 7 interference source user grid-connected quality of power supply Pre-Evaluation system it is characterised in that
Described electricity quality evaluation unit, for loading the described interferer models of user input, by described interferer models
With preset electric network model, carry out harmonic wave and/or voltage pulsation and/or flickering and/or tri-phase unbalance factor calculates, and judge user
Described power quality index disturbed value whether exceed power quality index limit value, if it is not, then pass through described historical report unit
Printed report, if so, then passes through described model database management unit, receives the abatement equipment model adding in advance.
10. according to claim 7 interference source user grid-connected quality of power supply Pre-Evaluation system it is characterised in that
Described electricity quality evaluation unit, for loading the described interferer models of user input, by described interferer models
With preset electric network model, calculate the power quality index disturbed value of user, and judge the described power quality index disturbance of user
Whether value exceedes power quality index limit value, if it is not, then by described historical report unit printed report, if so, then passing through institute
State model database management unit, milling train and arc furnace equipment receive the automatic switching capacitor bank with reactance；Commutator and converter
Equipment receives the automatic switching capacitor bank with reactance；Electric railway load receives the automatic switching capacitor bank with reactance；
Urban track traffic load receives SVC or SVG device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893638.1A CN106485416A (en) | 2016-10-13 | 2016-10-13 | A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893638.1A CN106485416A (en) | 2016-10-13 | 2016-10-13 | A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106485416A true CN106485416A (en) | 2017-03-08 |
Family
ID=58270724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610893638.1A Pending CN106485416A (en) | 2016-10-13 | 2016-10-13 | A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106485416A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591804A (en) * | 2017-09-22 | 2018-01-16 | 广东电网有限责任公司电力科学研究院 | A kind of electricity quality evaluation method and apparatus based on OPENDSS |
| CN107607857A (en) * | 2017-09-21 | 2018-01-19 | 广东电网有限责任公司电力科学研究院 | A kind of 110kV backup auto-activating device analysis methods based on RTDS Real Time Digital Simulators |
| CN109149607A (en) * | 2018-08-24 | 2019-01-04 | 国网浙江省电力有限公司电力科学研究院 | A kind of three-phase imbalance compensation control system and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647276A (en) * | 2013-12-10 | 2014-03-19 | 国家电网公司 | Electric energy quality early warning system and method thereof |
-
2016
- 2016-10-13 CN CN201610893638.1A patent/CN106485416A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647276A (en) * | 2013-12-10 | 2014-03-19 | 国家电网公司 | Electric energy quality early warning system and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张源渊 等: "典型干扰源电能质量特性分析与治理措施研究", 《电气应用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607857A (en) * | 2017-09-21 | 2018-01-19 | 广东电网有限责任公司电力科学研究院 | A kind of 110kV backup auto-activating device analysis methods based on RTDS Real Time Digital Simulators |
| CN107591804A (en) * | 2017-09-22 | 2018-01-16 | 广东电网有限责任公司电力科学研究院 | A kind of electricity quality evaluation method and apparatus based on OPENDSS |
| CN109149607A (en) * | 2018-08-24 | 2019-01-04 | 国网浙江省电力有限公司电力科学研究院 | A kind of three-phase imbalance compensation control system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103457261B (en) | Power quality integrated management device of electrified railway traction supply network | |
| CN103094905B (en) | Selection method of dynamic reactive power compensation configuration point | |
| CN103036230A (en) | Dynamic equivalence method of alternating-current-direct-current serial-parallel large power system based on engineering application | |
| US11201473B1 (en) | Coordinated control system and method of wind turbine and STATCOM for suppressing unbalanced voltage in dispersed wind farm | |
| CN104009499B (en) | The unbalanced dispatching method of a kind of solution wind-electricity integration system load flow | |
| CN103199549A (en) | Receiving-end power grid dynamic reactive power compensation equipment configuration position selecting method | |
| CN104538972B (en) | A kind of reactive compensation configuration method and device based on transient voltage stability constraint | |
| CN106485416A (en) | A kind of interference source user grid-connected quality of power supply Pre-Evaluation method and system | |
| Busarello et al. | Three‐phase battery storage system with transformerless cascaded multilevel inverter for distribution grid applications | |
| Deng et al. | Assessing the integration effect of inter-regional transmission on variable power generation under renewable energy consumption policy in China | |
| CN106026135A (en) | Apparatus and method for comprehensively controlling electric energy quality | |
| CN103715704A (en) | Micro electrical network common bus voltage imbalance inhibition method | |
| CN113191675B (en) | Multi-direct-current-sending-end power grid planning scheme adaptability evaluation method and system | |
| CN105071397A (en) | Coordinated reactive voltage control method of different reactive compensation devices of wind power delivery | |
| CN108321789A (en) | Power quality management decision support method based on cost benefit analysis | |
| Zhang et al. | Day-ahead stochastic optimal dispatch of LCC-HVDC interconnected power system considering flexibility improvement measures of sending system | |
| CN102222912B (en) | Controllable harmonic generation device for test and control method thereof | |
| Karrari | Integration of Flywheel Energy Storage Systems in Low Voltage Distribution Grids | |
| CN202421885U (en) | Tester for static synchronous compensator (STATCOM) controller | |
| Duan et al. | Application of fuzzy control harmonic suppression and reactive power compensation technology for power electronic equipment based on cloud computing | |
| Ren et al. | Multi-objective Optimal Adjustment Strategy with Multiple Constraints for Three-Phase Imbalance Loads | |
| CN107591804A (en) | A kind of electricity quality evaluation method and apparatus based on OPENDSS | |
| CN205509500U (en) | It puts to join in marriage humorous paper -back edition of change | |
| Wu et al. | Research on the influence of Multi-HVDC power coordinated control strategy on frequency stability in multi partitioned power grid | |
| Lv et al. | Research on voltage and frequency recovery control in microgrid based on droop control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |