CN107508322A - A kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection - Google Patents
A kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection Download PDFInfo
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- CN107508322A CN107508322A CN201710866407.6A CN201710866407A CN107508322A CN 107508322 A CN107508322 A CN 107508322A CN 201710866407 A CN201710866407 A CN 201710866407A CN 107508322 A CN107508322 A CN 107508322A
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- 238000004364 calculation method Methods 0.000 claims abstract description 20
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Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The present invention relates to a kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection, power system for accessing photovoltaic plant, when carrying out analysis of Short Circuit Fault, photovoltaic plant is equivalent to current source, according to measured test data, functional relation between photovoltaic plant injects to power system when drawing short trouble by Mathematical Fitting short circuit current and grid entry point Voltage Drop size, in actual short calculation of fault, situation is fallen according to the virtual voltage of photovoltaic electric station grid connection point, the short circuit current of photovoltaic plant output is quickly obtained by look-up table, and then calculate the distribution of the whole network short circuit current and voltage, suitable for the Practical Calculation Analysis field of short-circuit fault of power system.
Description
Technical field
The present invention relates to Power System Shortcuts to calculate analysis field, considers photovoltaic electric station grid connection more particularly, to one kind
Short-circuit fault of power system computational methods.
Background technology
According to existing photovoltaic electric station grid connection generating criterion, fairly large photovoltaic electric station grid connection electricity generation system needs to have
Certain low voltage ride-through capability, i.e., still it is incorporated into the power networks in grid collapses a period of time, and is exported necessarily to power network
Dynamic reactive electric current.With the continuous enlargement of photovoltaic plant scale, when short trouble occurs for power network, photovoltaic plant is to power network
Influence can not ignore.Therefore, when carrying out short-circuit fault of power system analysis calculating, consider photovoltaic plant to power system
Influence, be of great significance for the work tool such as Power network fault calculation of generation of electricity by new energy access.
And in existing relay protection of power system calculation of fault and synchronizing calculation method, not corresponding photovoltaic electric
The picture library and mathematical modeling stood, the short circuit current for considering to be injected after photovoltaic electric station grid connection can not be calculated, it is difficult to meet more and more
Photovoltaic plant access power system after short circuit calculation demand and relay protection setting need.
The content of the invention
Instant invention overcomes the technological deficiency of short circuit calculation analysis during above-mentioned existing photovoltaic plant access power network, there is provided
A kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection, fill up during existing relay protection fault calculates and lacked
The blank of few photovoltaic plant short trouble computation model and short circuit calculation method.
In order to solve the above technical problems, technical scheme is as follows：
A kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection, implementation steps are as follows：
S1. short-circuit fault of power system analysis and calculation model is established；
S2. by the short circuit current and the experimental result of Voltage Drop under the various AC faults of photovoltaic plant, using Mathematical Fitting
Method approximation draw the short circuit current of photovoltaic plant under short troublei sc With grid entry point Voltage Drop valueu drop Functional relation；
S3. the calculation of fault of photovoltaic plant is not considered power system, obtains grid entry point voltageu i ；
S4. grid entry point voltage is passed throughu i Calculate grid entry point Voltage Drop valueu drop , grid entry point Voltage Drop valueu drop Pass through following public affairs
Formula is asked for：
u
drop
=U
n
-u
i
Wherein,U n For the rated voltage of photovoltaic electric station grid connection point；
S5. form and grid entry point Voltage Drop value calculate photovoltaic plant under short trouble according to corresponding to the functional relation that S2 is obtained
The short circuit current of outputi sc ；
S6. short circuit current is passed throughi sc Calculate the grid entry point voltage increment Δ after the output short circuit current effect of superposition photovoltaic plantu；
S7. correction amount is passed throughuMade comparisons with default threshold value ε, if Δu＜ ε, then perform S8；If Δu>=ε, then performu i
=u i +Δu, and by after renewalu i Substitute into and return to S4 iterative calculation；
S8. the short circuit current exported according to photovoltaic plant under short trouble, calculated using the nodal method of analysis and nodal impedance matrix
The whole network short circuit current and voltage's distribiuting.
In a kind of preferable scheme, described S1 idiographic flow is as follows：
Power system in addition to photovoltaic plant establishes short trouble using the short-circuit current calculation method based on symmetrical component method
Model, photovoltaic plant Approximate Equivalent are current source, and described current source injects short circuit current at grid entry point to power system.
In a kind of preferable scheme, in described S2, photovoltaic plant injects short circuit electricity at grid entry point to power system
Stream and grid entry point Voltage Drop value existence function relation, it is by described functional relation approximate representation：
i sc =f(u drop )
In formula,fThe functional relation obtained for Mathematical Fitting, it can be calculated by look-up table.
In a kind of preferable scheme, the short circuit current of photovoltaic plant output under described short troublei scBecause photovoltaic is inverse
Become the conveyance capacity of device and the upper limit be present, that is, following mathematical relationship be present：
i sc≤I max
In formula,I maxFor the maximum output current of photovoltaic DC-to-AC converter.
In a kind of preferable scheme, described S5 idiographic flow is as follows：
The photovoltaic plant short circuit current obtained by S2i sc With grid entry point Voltage Drop valueu drop Functional relation expression formula, use
Look-up table inquiry draws photovoltaic plant short circuit current corresponding to current grid entry point Voltage Drop value, as photovoltaic plant in short-circuit event
The short circuit current exported in barrier to power system.
In a kind of preferable scheme, the grid entry point voltage increment Δ in described S6uAsked for by below equation：
Δu=g(i sc )
In formula,gFor grid entry point voltage increment ΔuWith short circuit currenti sc Between functional relation, can according to power system topology
Structure and principle of stacking obtain.
Influence of the photovoltaic plant to power system is approximately that photovoltaic plant is equivalent into current source by the present invention, from grid entry point
Short circuit current injects to power system in place.And the short circuit current and grid entry point that photovoltaic plant injects to power system under short trouble
Voltage Drop value existence function relation, thus calculates output short circuit current, so obtain the electric current under the whole network short trouble and
Voltage's distribiuting.
Compared with prior art, the beneficial effect of technical solution of the present invention is：
The present invention, which has been filled up during existing relay protection fault calculates, lacks photovoltaic plant short trouble computation model and short circuit calculation
The blank of method, and then improve the precision of relay protection setting calculation.
Brief description of the drawings
Fig. 1 is the method flow diagram of embodiment.
Fig. 2 is the method schematic of the present invention.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
To those skilled in the art, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Technical scheme is described further with reference to the accompanying drawings and examples.
Application of the embodiment for the present invention under AC system short trouble.
As shown in figure 1, a kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection, implementation steps are such as
Under：
Step 1：Establish short-circuit fault of power system analysis and calculation model：Power system in addition to photovoltaic plant, which uses, to be based on
The short-circuit current calculation method of symmetrical component method establishes short trouble model, and photovoltaic plant Approximate Equivalent is current source, described
Current source injects short circuit current at grid entry point to power system, as shown in Figure 2.
In Fig. 2,i sc It is the short circuit current of photovoltaic plant under short trouble,u i It is grid entry point magnitude of voltage, F is trouble point, IF
It is current in the fault point, VFIt is fault point voltage, ZFIt is trouble point resistance.
Step 2：By the short circuit current and the experimental result of Voltage Drop under the various AC faults of photovoltaic plant, use
The method approximation of Mathematical Fitting draws the short circuit current of photovoltaic plant under short troublei sc With grid entry point Voltage Drop valueu drop 's
Functional relation；And short circuit current has the upper limit due to the limitation of photovoltaic DC-to-AC converter, it is by described functional relation approximate representation：
i sc =f(u drop ) (i sc≤I max)
In formula,i scThe short circuit current exported for photovoltaic plant under ac short circuit failure,u drop For the Voltage Drop value of grid entry point,f
To be fitted obtained functional relation, can be calculated by look-up table.I maxFor the maximum output current of photovoltaic DC-to-AC converter.
Step 3：(photovoltaic plant is opened a way) in the case of not considering photovoltaic plant and failure meter is carried out to power system
Calculate, obtain grid entry point voltageu i ；
Step 4：Pass through grid entry point voltageu i Calculate grid entry point Voltage Drop valueu drop , grid entry point Voltage Drop valueu drop By with
Lower formula is asked for：
u
drop
=U
n
-u
i
Wherein,U n For the rated voltage of photovoltaic electric station grid connection point.
Step 5：According to photovoltaic plant short circuit current and the relation of grid entry point Voltage Drop value, photovoltaic plant output is obtained
Short circuit currenti sc 。
Step 6：Calculate the photovoltaic electric station grid connection point voltage increment after the output short circuit current effect of superposition photovoltaic plant：
Photovoltaic electric station grid connection point voltage increment ΔuAsked for by below equation：
Δu=g(i sc )
In formula,gFor grid entry point voltage increment ΔuWith short circuit currenti sc Between functional relation, can according to power system topology
Structure and principle of stacking obtain.
Step 7：The voltage increment of the photovoltaic electric station grid connection being calculated point is made comparisons with threshold value：If photovoltaic
The voltage increment Δ of electric station grid connection pointuLess than threshold value, then step 9 is performed, otherwise performs step 8.
Step 8：Correct grid entry point voltage：Grid entry point voltageu i It is modified by below equation：
u i =u i +Δu
By revised grid entry point voltageu i Substitute into step 4 and continue to calculate.
Step 9：The distribution of the whole network short-circuit current voltage calculates：Exported according to photovoltaic plant under short trouble short
Road electric current, the whole network short circuit current and voltage's distribiuting are calculated using the nodal method of analysis and nodal impedance matrix.
Same or analogous label corresponds to same or analogous part；
Term the being given for example only property explanation of position relationship described in accompanying drawing, it is impossible to be interpreted as the limitation to this patent；
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this hair
The restriction of bright embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all in the present invention
Spirit and principle within all any modification, equivalent and improvement made etc., should be included in the guarantor of the claims in the present invention
Within the scope of shield.
Claims (6)
1. a kind of short-circuit fault of power system computational methods for considering photovoltaic electric station grid connection, it is characterised in that implementation steps are as follows：
S1. short-circuit fault of power system analysis and calculation model is established；
S2. by the short circuit current and the experimental result of Voltage Drop under the various AC faults of photovoltaic plant, using Mathematical Fitting
Method approximation draw the short circuit current of photovoltaic plant under short troublei sc With grid entry point Voltage Drop valueu drop Functional relation；
S3. the calculation of fault of photovoltaic plant is not considered power system, obtains grid entry point voltageu i ；
S4. grid entry point voltage is passed throughu i Calculate grid entry point Voltage Drop valueu drop , grid entry point Voltage Drop valueu drop Pass through following public affairs
Formula is asked for：
u
drop
=U
n
-u
i
Wherein,U n For the rated voltage of photovoltaic electric station grid connection point；
S5. form and grid entry point Voltage Drop value calculate photovoltaic plant under short trouble according to corresponding to the functional relation that S2 is obtained
The short circuit current of outputi sc ；
S6. short circuit current is passed throughi sc Calculate the grid entry point voltage increment Δ after the output short circuit current effect of superposition photovoltaic plantu；
S7. correction amount is passed throughuMade comparisons with default threshold value ε, if Δu＜ ε, then perform S8；If Δu>=ε, then performu i =u i +Δu, and by after renewalu i Substitute into and return to S4 iterative calculation；
S8. the short circuit current exported according to photovoltaic plant under short trouble, calculated using the nodal method of analysis and nodal impedance matrix
The whole network short circuit current and voltage's distribiuting.
2. short-circuit fault of power system computational methods according to claim 1, it is characterised in that described S1 specific stream
Journey is as follows：
Power system in addition to photovoltaic plant establishes short trouble using the short-circuit current calculation method based on symmetrical component method
Model, and be current source by photovoltaic plant Approximate Equivalent, described current source injects short circuit electricity at grid entry point to power system
Stream.
3. short-circuit fault of power system computational methods according to claim 2, it is characterised in that in described S2, photovoltaic
The short circuit current and grid entry point Voltage Drop value existence function relation that power station is injected at grid entry point to power system, will be described
Functional relation approximate representation is：
i sc =f(u drop )
In formula,fThe functional relation obtained for Mathematical Fitting, it can be calculated by look-up table.
4. short-circuit fault of power system computational methods according to claim 3, it is characterised in that under described short trouble
The short circuit current of photovoltaic plant outputi scThe upper limit due to the conveyance capacity of photovoltaic DC-to-AC converter be present, that is, following mathematics be present and close
System：
i sc≤I max
In formula,I maxFor the maximum output current of photovoltaic DC-to-AC converter.
5. the short-circuit fault of power system computational methods according to any claim in Claims 1-4, its feature exist
In described S5 idiographic flow is as follows：
Pass through the short circuit current of the obtained photovoltaic plants of S2i sc With grid entry point Voltage Drop valueu drop Functional relation expression formula, adopt
Photovoltaic plant short circuit current corresponding to current grid entry point Voltage Drop value is drawn with look-up table inquiry, as photovoltaic plant in short circuit
The short circuit current exported in failure to power system.
6. short-circuit fault of power system computational methods according to claim 5, it is characterised in that grid-connected in described S6
Point voltage increment ΔuAsked for by below equation：
Δu=g(i sc )
In formula,gFor grid entry point voltage increment ΔuWith short circuit currenti sc Between functional relation, can according to power system topology
Structure and principle of stacking obtain.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449982A (en) * | 2018-12-07 | 2019-03-08 | 国网山西省电力公司临汾供电公司 | The operation and maintenance method of power distribution network containing multiple photovoltaic micros |
| CN110336327A (en) * | 2019-07-29 | 2019-10-15 | 国网上海市电力公司 | Consider the power distribution network short circuit current acquisition methods of distributed photovoltaic low voltage crossing |
| CN110378597A (en) * | 2019-07-19 | 2019-10-25 | 广东电网有限责任公司 | A kind of photovoltaic power generation equipment fault current on-line calculation method and device |
| CN113742907A (en) * | 2021-08-24 | 2021-12-03 | 国网河南省电力公司电力科学研究院 | Photovoltaic power station short-circuit current unified calculation method |
| CN115207920A (en) * | 2022-09-13 | 2022-10-18 | 国网江西省电力有限公司电力科学研究院 | Photovoltaic power supply-containing power distribution network short-circuit current calculation method and system based on factor table |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036143A (en) * | 2014-06-20 | 2014-09-10 | 南方电网科学研究院有限责任公司 | Actual-failure based power system short-circuit current calculation scheme forming method |
| CN104317987A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | Error analysis method for simulating calculation of short-circuit current |
| CN104331619A (en) * | 2014-10-30 | 2015-02-04 | 国网上海市电力公司 | Short-circuit current calculation method of electric system containing inverter connector power source |
| CN105183999A (en) * | 2015-09-17 | 2015-12-23 | 国家电网公司 | Method for calculating maximum short circuit current of electric power system with photovoltaic power station |
| CN105703364A (en) * | 2016-04-18 | 2016-06-22 | 哈尔滨工业大学 | Photovoltaic power station equivalent modeling method |
-
2017
- 2017-09-22 CN CN201710866407.6A patent/CN107508322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036143A (en) * | 2014-06-20 | 2014-09-10 | 南方电网科学研究院有限责任公司 | Actual-failure based power system short-circuit current calculation scheme forming method |
| CN104317987A (en) * | 2014-10-09 | 2015-01-28 | 国家电网公司 | Error analysis method for simulating calculation of short-circuit current |
| CN104331619A (en) * | 2014-10-30 | 2015-02-04 | 国网上海市电力公司 | Short-circuit current calculation method of electric system containing inverter connector power source |
| CN105183999A (en) * | 2015-09-17 | 2015-12-23 | 国家电网公司 | Method for calculating maximum short circuit current of electric power system with photovoltaic power station |
| CN105703364A (en) * | 2016-04-18 | 2016-06-22 | 哈尔滨工业大学 | Photovoltaic power station equivalent modeling method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449982A (en) * | 2018-12-07 | 2019-03-08 | 国网山西省电力公司临汾供电公司 | The operation and maintenance method of power distribution network containing multiple photovoltaic micros |
| CN110378597A (en) * | 2019-07-19 | 2019-10-25 | 广东电网有限责任公司 | A kind of photovoltaic power generation equipment fault current on-line calculation method and device |
| CN110378597B (en) * | 2019-07-19 | 2022-02-15 | 广东电网有限责任公司 | Photovoltaic power generation equipment fault current online calculation method and device |
| CN110336327A (en) * | 2019-07-29 | 2019-10-15 | 国网上海市电力公司 | Consider the power distribution network short circuit current acquisition methods of distributed photovoltaic low voltage crossing |
| CN113742907A (en) * | 2021-08-24 | 2021-12-03 | 国网河南省电力公司电力科学研究院 | Photovoltaic power station short-circuit current unified calculation method |
| CN113742907B (en) * | 2021-08-24 | 2023-09-15 | 国网河南省电力公司电力科学研究院 | Unified calculation method for short-circuit current of photovoltaic power station |
| CN115207920A (en) * | 2022-09-13 | 2022-10-18 | 国网江西省电力有限公司电力科学研究院 | Photovoltaic power supply-containing power distribution network short-circuit current calculation method and system based on factor table |
| CN115207920B (en) * | 2022-09-13 | 2023-03-14 | 国网江西省电力有限公司电力科学研究院 | Photovoltaic power supply-containing power distribution network short-circuit current calculation method and system based on factor table |
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Effective date of registration: 20210723 Address after: 510000 No. 75, Meihua Road, Yuexiu District, Guangzhou City, Guangdong Province (office building only) Patentee after: ELECTRIC POWER DISPATCHING CONTROL CENTER OF GUANGDONG POWER GRID Co.,Ltd. Address before: 510000 No. 75, Meihua Road, Yuexiu District, Guangzhou City, Guangdong Province (office building only) Patentee before: ELECTRIC POWER DISPATCHING CONTROL CENTER OF GUANGDONG POWER GRID Co.,Ltd. Patentee before: HUAZHONG University OF SCIENCE AND TECHNOLOGY |