CN107706918A - A kind of new energy and power network cooperated power supply method and its calibration equipment - Google Patents
A kind of new energy and power network cooperated power supply method and its calibration equipment Download PDFInfo
- Publication number
- CN107706918A CN107706918A CN201711173896.3A CN201711173896A CN107706918A CN 107706918 A CN107706918 A CN 107706918A CN 201711173896 A CN201711173896 A CN 201711173896A CN 107706918 A CN107706918 A CN 107706918A
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- power
- turn
- power supply
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- supply
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Classifications
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
-
- 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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- 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]
Abstract
The invention discloses a kind of method of new energy and power network cooperated power supply, comprise the following steps, whether partial electric grid running status meets condition before a. judges power-off；The current partial electric grid includes microgrid and power network；B. equivalent mathematical modeling is established according to current partial electric grid；C. the equivalent mathematical modeling is solved, obtains the power supply capacity of current partial electric grid, the power supply capacity is judged compared with present load, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；D. when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to carry out electric power for path and turn to supply according to output.The present invention can solve the problem that the technical problem of the cooperation of multi source contribution, can quickly meet the switching of supply path.
Description
Technical field
The invention belongs to new energy field, more particularly to a kind of new energy to fill with power network cooperated power supply method and its verification
Put.
Background technology
At this stage, microgrid function is gradually incorporated in life, and the solar power generation, wind-power electricity generation in microgrid are all using greatly certainly
Right clean energy resource, play the role of important for saving the energy, environmental protection, but electric power system fault is due to for example sudden and violent
The congestion etc. of the rugged environment such as rain, heavy snow, strong wind factor and increasingly old power equipment, communication port is inevitable
's.The power supply mode that this is following main flow is powered by micro-grid system and power system, when power supply system and microgrid
How cooperation for the failure of power system, takes quick mode to form power supply when being powered, and this is asking of must solving
Topic, and need the problem solved.
The content of the invention
Therefore, in view of the above-mentioned problems, the invention provides a kind of method of new energy and power network cooperated power supply, it include with
Lower step,
A. whether partial electric grid running status meets condition before judging power-off；The current partial electric grid includes microgrid and electric power
Net；
B. equivalent mathematical modeling is established according to current partial electric grid；
C. the equivalent mathematical modeling is solved, obtains the power supply capacity of current partial electric grid, the power supply capacity is born with current
Row multilevel iudge is loaded into, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
D. when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to carry out electric power for path and turn according to output
For.
The method of described new energy and power network cooperated power supply, step a include：
The quantity that mark micro-capacitance sensor can be put into, diagnostic seach is carried out to micro-capacitance sensor all devices, and predict next cycle micro-capacitance sensor
Power supply capacity, the micro-capacitance sensor include solar cell, wind-driven generator, energy-storage battery；
The power supply capacity of local power net is marked, the local power network meets following condition, and the condition includes：
1）Meet for all nodes in the local power net：
；N is local power net interior joint sum,For partial electric grid interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is adjacent with i
Node；
2）Voltage compensating device is provided with local power net to cause the voltage magnitude of each node to fluctuate very little, so that energy
The voltage magnitude perunit value for enough thinking each node is 1；
When the local power net meets above-mentioned 2 conditions simultaneously, step b is performed；When the local power net can not meet above-mentioned 2
During individual condition, local power network is diagnosed, travels through the supply path of whole local power net, cut-out can not meet
The circuit of condition is stated, then, then verifies and once whether meets condition, if being still unsatisfactory for condition, terminate this method.
The method of described new energy and power network cooperated power supply, step b include：
Set and turn to supply Path selection set S：
S={s1,s2... si ..., sp, g1, g2 ... gi ... gp }, p is selective to turn to supply total number of paths, siRepresent a kind of selective
Turn supply path；P is selective supply path sum, and gi is selective supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the local power net interior joint i of estimation voltage phase angle,To estimate
The partial electric grid interior joint j of meter voltage phase angle, BijThe imaginary part of admittance, a, b, c are assigned as solar-electricity between node i, j
The quantity that pond, wind-driven generator, energy-storage battery can be put into, Pv, Pg, Pb solar cell, wind-driven generator, energy-storage battery are next
Cycle exportable power.
The method of described new energy and power network cooperated power supply, step c include：
Supply path gi is selected, optional supply path gi is calculated to the power supply energy of next cycle micro-capacitance sensor successively from g1 to gp
Power, by the power supply capacity of the micro-capacitance sensor in next cycle successively add up summation, compared with load consuming power, calculate whether can
Power supply capacity with load, if it is possible to match, then need not put into power network；If the power supply capacity of micro-capacitance sensor can not match negative
The power that need to be consumed is carried, then selection is available for the power network of electric energy progressively to put into power network；If power still can not be carried out
Match somebody with somebody；
Then verification can carry out turning the path supplied, and the path that forming more sets can turn to supply selects for user, and described turn for path verification bag
Include and the simplification trend after turn confession is implemented for path according to this turn using electric system simulation program solution, i.e., supplied according to according to this turn
Path implements to turn the active power of all nodes in the partial electric grid after supplying, and the voltage phase angle for setting voltage phase angle datum node is
0, the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1 node
Whether estimated voltage phase angle is in default safe range, if it is, exporting this turn supplies path.
Using electric system simulation program solution according to this turn for path implement turn supply after simplification trend, i.e., basis according to
This turn implements the active power of all nodes in the partial electric grid after turning to supply for path, sets the voltage of voltage phase angle datum node
Phase angle is 0, and the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1
Whether the estimated voltage phase angle of node is in default safe range, if it is, exporting this turn supplies path.
A kind of calibration equipment of new energy and power network cooperated power supply, including：
Judge module, judge whether partial electric grid running status meets condition before powering off；
Equivalent module, equivalent mathematical modeling is established according to current partial electric grid；
Computing module, solve the equivalent mathematical modeling, obtain the power supply capacity of current partial electric grid, by the power supply capacity with
Present load is compared judgement, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
Output module, when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to enter for path according to output
Row electric power turns to supply.
The calibration equipment of a kind of described new energy and power network cooperated power supply, the current partial electric grid include microgrid and electricity
Power net.
The calibration equipment of a kind of described new energy and power network cooperated power supply, the microgrid include solar cell, wind-force
Generator, energy-storage battery；The power network includes multiple alternative high voltage bus；The solar cell, wind-power electricity generation
Machine, energy-storage battery and the multiple selectable high voltage bus are connected in parallel on power supply buses, the power supply buses input
Gate-controlled switch is respectively connected with output end.
The calibration equipment of a kind of described new energy and power network cooperated power supply, in addition to controller, the controller according to
The output result of the output module, the break-make of the power supply buses is controlled, to control the output shape of the microgrid and power network
Into turning solution.
Power recovery method of the invention by setting consideration condition, by being selected supply path and being verified, obtain
To the scheme for being rapidly performed by new energy and the recovery of power network cooperated power supply, when making following progress local microgrid control, can subtract
Small electric power system fault causes electricity shortage to be influenceed caused by being loaded on power supply, makes power supply mode more intelligent.
Brief description of the drawings
Fig. 1 is the method schematic diagram of new energy and power network cooperated power supply.
Embodiment
As shown in figure 1, for the invention provides a kind of method of new energy and power network cooperated power supply, it includes following step
Suddenly,
A. whether partial electric grid running status meets condition before judging power-off；The current partial electric grid includes microgrid and electric power
Net；
B. equivalent mathematical modeling is established according to current partial electric grid；
C. the equivalent mathematical modeling is solved, obtains the power supply capacity of current partial electric grid, the power supply capacity is born with current
Row multilevel iudge is loaded into, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
D. when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to carry out electric power for path and turn according to output
For.
The method of described new energy and power network cooperated power supply, step a include：
The quantity that mark micro-capacitance sensor can be put into, diagnostic seach is carried out to micro-capacitance sensor all devices, and predict next cycle micro-capacitance sensor
Power supply capacity, the micro-capacitance sensor include solar cell, wind-driven generator, energy-storage battery；
The power supply capacity of local power net is marked, the local power network meets following condition, and the condition includes：
1）Meet for all nodes in the local power net：
；N is that local power net interior joint is total
Number,For partial electric grid interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is adjacent with i
Node；
2）Voltage compensating device is provided with local power net to cause the voltage magnitude of each node to fluctuate very little, so that energy
The voltage magnitude perunit value for enough thinking each node is 1；
When the local power net meets above-mentioned 2 conditions simultaneously, step b is performed；When the local power net can not meet above-mentioned 2
During individual condition, local power network is diagnosed, travels through the supply path of whole local power net, cut-out can not meet
The circuit of condition is stated, then, then verifies and once whether meets condition, if being still unsatisfactory for condition, terminate this method.
The method of described new energy and power network cooperated power supply, step b include：
Set and turn to supply Path selection set S：
S={s1,s2... si ..., sp, g1, g2 ... gi ... gp }, p is selective to turn to supply total number of paths, siRepresent a kind of selective
Turn supply path；P is selective supply path sum, and gi is selective supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the local power net interior joint i of estimation voltage phase angle,To estimate
The partial electric grid interior joint j of meter voltage phase angle, BijThe imaginary part of admittance, a, b, c are assigned as solar-electricity between node i, j
The quantity that pond, wind-driven generator, energy-storage battery can be put into, Pv, Pg, Pb solar cell, wind-driven generator, energy-storage battery are next
Cycle exportable power.
The method of described new energy and power network cooperated power supply, step c include：
Supply path gi is selected, optional supply path gi is calculated to the power supply energy of next cycle micro-capacitance sensor successively from g1 to gp
Power, by the power supply capacity of the micro-capacitance sensor in next cycle successively add up summation, compared with load consuming power, calculate whether can
Power supply capacity with load, if it is possible to match, then need not put into power network；If the power supply capacity of micro-capacitance sensor can not match negative
The power that need to be consumed is carried, then selection is available for the power network of electric energy progressively to put into power network；If power still can not be carried out
Match somebody with somebody；
Then verification can carry out turning the path supplied, and the path that forming more sets can turn to supply selects for user, and described turn for path verification bag
Include and the simplification trend after turn confession is implemented for path according to this turn using electric system simulation program solution, i.e., supplied according to according to this turn
Path implements to turn the active power of all nodes in the partial electric grid after supplying, and the voltage phase angle for setting voltage phase angle datum node is
0, the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1 node
Whether estimated voltage phase angle is in default safe range, if it is, exporting this turn supplies path.
Using electric system simulation program solution according to this turn for path implement turn supply after simplification trend, i.e., basis according to
This turn implements the active power of all nodes in the partial electric grid after turning to supply for path, sets the voltage of voltage phase angle datum node
Phase angle is 0, and the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1
Whether the estimated voltage phase angle of node is in default safe range, if it is, exporting this turn supplies path.
A kind of calibration equipment of new energy and power network cooperated power supply, including：
Judge module, judge whether partial electric grid running status meets condition before powering off；
Equivalent module, equivalent mathematical modeling is established according to current partial electric grid；
Computing module, solve the equivalent mathematical modeling, obtain the power supply capacity of current partial electric grid, by the power supply capacity with
Present load is compared judgement, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
Output module, when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to enter for path according to output
Row electric power turns to supply.
The calibration equipment of a kind of described new energy and power network cooperated power supply, the current partial electric grid include microgrid and electricity
Power net.
The calibration equipment of a kind of described new energy and power network cooperated power supply, the microgrid include solar cell, wind-force
Generator, energy-storage battery；The power network includes multiple alternative high voltage bus；The solar cell, wind-power electricity generation
Machine, energy-storage battery and the multiple selectable high voltage bus are connected in parallel on power supply buses, the power supply buses input
Gate-controlled switch is respectively connected with output end.
The calibration equipment of a kind of described new energy and power network cooperated power supply, in addition to controller, the controller according to
The output result of the output module, the break-make of the power supply buses is controlled, to control the output shape of the microgrid and power network
Into turning solution.
Power recovery method of the invention by setting consideration condition, by being selected supply path and being verified, obtain
To the scheme for being rapidly performed by new energy and the recovery of power network cooperated power supply, when making following progress local microgrid control, can subtract
Small electric power system fault causes electricity shortage to be influenceed caused by being loaded on power supply, makes power supply mode more intelligent.
It should be noted that above content is that to combine specific embodiment made for the present invention further specifically
It is bright, it is impossible to assert that the embodiment of the present invention is only limitted to this, under the above-mentioned guidance of the present invention, those skilled in the art can
To carry out various improvement and deformation on the basis of above-described embodiment, and these are improved or deformation falls in protection model of the invention
In enclosing.
Claims (9)
1. a kind of method of new energy and power network cooperated power supply, it is characterised in that：Comprise the following steps,
A. whether partial electric grid running status meets condition before judging power-off；The current partial electric grid includes microgrid and electric power
Net；
B. equivalent mathematical modeling is established according to current partial electric grid；
C. the equivalent mathematical modeling is solved, obtains the power supply capacity of current partial electric grid, the power supply capacity is born with current
Row multilevel iudge is loaded into, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
D. when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to carry out electric power for path and turn according to output
For.
2. the method for new energy according to claim 1 and power network cooperated power supply, it is characterised in that step a includes：
The quantity that mark micro-capacitance sensor can be put into, diagnostic seach is carried out to micro-capacitance sensor all devices, and predict next cycle micro-capacitance sensor
Power supply capacity, the micro-capacitance sensor include solar cell, wind-driven generator, energy-storage battery；
The power supply capacity of local power net is marked, the local power network meets following condition, and the condition includes：
Meet for all nodes in the local power net：
；N is local power net interior joint sum,For partial electric grid interior joint i voltage phase angle,For partial electric grid interior joint j voltage phase angle, j is adjacent with i
Node；
Voltage compensating device is provided with local power net to cause the voltage magnitude of each node to fluctuate very little, so that can
The voltage magnitude perunit value for thinking each node is 1；
When the local power net meets above-mentioned 2 conditions simultaneously, step b is performed；When the local power net can not meet above-mentioned 2
During individual condition, local power network is diagnosed, travels through the supply path of whole local power net, cut-out can not meet
The circuit of condition is stated, then, then verifies and once whether meets condition, if being still unsatisfactory for condition, terminate this method.
3. the method for new energy according to claim 2 and power network cooperated power supply, it is characterised in that step b includes：
Set and turn to supply Path selection set S：
S={s1,s2... si ..., sp, g1, g2 ... gi ... gp }, p is selective to turn to supply total number of paths, siRepresent a kind of selective
Turn supply path；P is selective supply path sum, and gi is selective supply path；
Establish power system and simplify tide model：
Wherein, PiFor the active power of node i,For the local power net interior joint i of estimation voltage phase angle,For estimation
Partial electric grid interior joint j voltage phase angle, BijThe imaginary part of admittance between node i, j, a, b, c be assigned as solar cell,
The quantity that wind-driven generator, energy-storage battery can be put into, Pv, Pg, Pb solar cell, wind-driven generator, energy-storage battery next week
Phase exportable power.
4. the method for new energy according to claim 3 and power network cooperated power supply, it is characterised in that step c includes：
Supply path gi is selected, optional supply path gi is calculated to the power supply energy of next cycle micro-capacitance sensor successively from g1 to gp
Power, by the power supply capacity of the micro-capacitance sensor in next cycle successively add up summation, compared with load consuming power, calculate whether can
Power supply capacity with load, if it is possible to match, then need not put into power network；If the power supply capacity of micro-capacitance sensor can not match negative
The power that need to be consumed is carried, then selection is available for the power network of electric energy progressively to put into power network；If power still can not be carried out
Match somebody with somebody；
Then verification can carry out turning the path supplied, and the path that forming more sets can turn to supply selects for user, and described turn for path verification bag
Include and the simplification trend after turn confession is implemented for path according to this turn using electric system simulation program solution, i.e., supplied according to according to this turn
Path implements to turn the active power of all nodes in the partial electric grid after supplying, and the voltage phase angle for setting voltage phase angle datum node is
0, the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1 node
Whether estimated voltage phase angle is in default safe range, if it is, exporting this turn supplies path.
5. the simplification trend after turn confession is implemented for path according to this turn using electric system simulation program solution, i.e., according to according to this
Turn the active power of all nodes in the partial electric grid after being supplied for path implementation turn, the voltage phase of voltage phase angle datum node is set
Angle is 0, and the estimated voltage phase angle of other n-1 node in partial electric grid is solved by simplifying tide model, judges this n-1 section
Whether the estimated voltage phase angle of point is in default safe range, if it is, exporting this turn supplies path.
A kind of 6. calibration equipment of new energy and power network cooperated power supply, it is characterised in that：Including：
Judge module, judge whether partial electric grid running status meets condition before powering off；
Equivalent module, equivalent mathematical modeling is established according to current partial electric grid；
Computing module, solve the equivalent mathematical modeling, obtain the power supply capacity of current partial electric grid, by the power supply capacity with
Present load is compared judgement, determines the power supply capacity and the matching degree of present load, judges whether to need to turn to supply；
Output module, when have turn supply and demand and ask when, allocate the input of new energy, coordinate power network, turn to enter for path according to output
Row electric power turns to supply.
7. the calibration equipment of a kind of new energy as claimed in claim 5 and power network cooperated power supply, it is characterised in that：It is described current
Partial electric grid includes microgrid and power network.
8. the calibration equipment of a kind of new energy as claimed in claim 6 and power network cooperated power supply, it is characterised in that：The microgrid
Including solar cell, wind-driven generator, energy-storage battery；The power network includes multiple alternative high voltage bus；It is described
Solar cell, wind-driven generator, energy-storage battery and the multiple selectable high voltage bus are connected in parallel on power supply buses,
The power supply buses input and output end are respectively connected with gate-controlled switch.
9. the calibration equipment of a kind of new energy as claimed in claim 7 and power network cooperated power supply, it is characterised in that：Also include control
Device processed, the controller controls the break-make of the power supply buses according to the output result of the output module, described micro- to control
The output of net and power network forms turning solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173896.3A CN107706918B (en) | 2017-11-22 | 2017-11-22 | New energy and power grid matched power supply method and calibration device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173896.3A CN107706918B (en) | 2017-11-22 | 2017-11-22 | New energy and power grid matched power supply method and calibration device thereof |
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| CN107706918A true CN107706918A (en) | 2018-02-16 |
| CN107706918B CN107706918B (en) | 2020-12-01 |
Family
ID=61185339
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| CN102738834A (en) * | 2012-06-21 | 2012-10-17 | 浙江大学 | Method for dynamically dividing and operating multiple islands of city micro power grid with photovoltaic power supplies |
| CN102983629A (en) * | 2012-11-07 | 2013-03-20 | 中国电力科学研究院 | Auxiliary decision-making method for on-line power system restoration |
| CN103855707A (en) * | 2014-02-20 | 2014-06-11 | 深圳供电局有限公司 | Power supply reliability assessment method of power distribution network comprising distributed power supply |
| US20150212534A1 (en) * | 2014-01-24 | 2015-07-30 | International Business Machines Corporation | Generating electric substation load transfer control parameters |
| CN105470928A (en) * | 2015-09-21 | 2016-04-06 | 国电南瑞科技股份有限公司 | Zoned and layered load transferring method based on urban power transmission network fault recovery |
| CN106026085A (en) * | 2016-06-27 | 2016-10-12 | 中国南方电网有限责任公司 | Power distribution network closed-loop power supply transferring path optimum decision method |
-
2017
- 2017-11-22 CN CN201711173896.3A patent/CN107706918B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738834A (en) * | 2012-06-21 | 2012-10-17 | 浙江大学 | Method for dynamically dividing and operating multiple islands of city micro power grid with photovoltaic power supplies |
| CN102983629A (en) * | 2012-11-07 | 2013-03-20 | 中国电力科学研究院 | Auxiliary decision-making method for on-line power system restoration |
| US20150212534A1 (en) * | 2014-01-24 | 2015-07-30 | International Business Machines Corporation | Generating electric substation load transfer control parameters |
| CN103855707A (en) * | 2014-02-20 | 2014-06-11 | 深圳供电局有限公司 | Power supply reliability assessment method of power distribution network comprising distributed power supply |
| CN105470928A (en) * | 2015-09-21 | 2016-04-06 | 国电南瑞科技股份有限公司 | Zoned and layered load transferring method based on urban power transmission network fault recovery |
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