CN113659613A - Independent micro-grid optimization method - Google Patents
Independent micro-grid optimization method Download PDFInfo
- Publication number
- CN113659613A CN113659613A CN202110767445.2A CN202110767445A CN113659613A CN 113659613 A CN113659613 A CN 113659613A CN 202110767445 A CN202110767445 A CN 202110767445A CN 113659613 A CN113659613 A CN 113659613A
- Authority
- CN
- China
- Prior art keywords
- power
- generation system
- power generation
- diesel
- energy storage
- 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
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005457 optimization Methods 0.000 title claims description 14
- 238000010248 power generation Methods 0.000 claims abstract description 129
- 238000004146 energy storage Methods 0.000 claims abstract description 66
- 239000002283 diesel fuel Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000010729 system oil Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000003814 drug Substances 0.000 description 10
- 238000004590 computer program Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase 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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel generators
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application relates to a method for optimizing an independent microgrid, an electronic device and a storage medium, and relates to the technical field of microgrid control, wherein the method for optimizing the independent microgrid comprises the following steps: and under the condition that the diesel power generation system is in a stop state, under the condition that the first unbalanced power is greater than 0, the energy storage system is matched for discharging, and under the condition that the first unbalanced power is less than 0, the energy storage system is charged. This application carries out the power switch to little grid system according to two indexs of average electric charge amount and first unbalanced power of PCS, can be to the produced electric charge amount make full use of photovoltaic power generation system and diesel oil power generation system, and then reach economic benefits maximize.
Description
Technical Field
The application relates to the technical field of microgrid control, in particular to a method for optimizing an independent microgrid.
Background
With the rapid development of power grid technology, more and more areas supply power by combining a photovoltaic power generation system on the basis of an original diesel power generation system, and primary performance source consumption can be reduced.
In the related art, when a plurality of independent micro-grids supply power, power supply source switching is not performed on power required by system loads in time, so that the energy utilization rate of a photovoltaic power generation system and a diesel power generation system is low, and the economic benefit maximization cannot be achieved.
At present, no effective solution is provided aiming at the problem of low economic benefit caused by low energy utilization rate of a micro-grid on a photovoltaic and diesel power generation system in the related technology.
Disclosure of Invention
The embodiment of the application provides an independent microgrid optimization method, optimization is carried out based on microgrid power supply switching, and the problem that the microgrid system is low in energy utilization rate of photovoltaic and diesel power generation systems and low in economic benefit is solved.
The embodiment of the application provides an independent microgrid optimization method, which comprises the following steps:
calculating first unbalanced power based on the generating power of the photovoltaic power generation system, and acquiring the average charge amount of the PCS;
judging whether the diesel power generation system meets a shutdown condition or not when the diesel power generation system is in an operating state;
and judging whether the diesel power generation system meets the operation condition or not when the diesel power generation system is in a shutdown state.
Preferably, the diesel power generation system satisfying the shutdown condition includes:
the average charge amount of an energy storage converter of the energy storage system is larger than a first preset value, and the first unbalanced power is smaller than the maximum power discharged by the energy storage system.
Preferably, the diesel power generation system satisfying the operating condition includes:
the average charge amount of the energy storage converter is lower than a second preset value, and the first unbalanced power is larger than the maximum power provided by the photovoltaic power generation system, or the first unbalanced power is larger than the maximum power discharged by the energy storage system.
Preferably, the second unbalanced power is obtained when the diesel power generation system does not satisfy the shutdown condition.
Preferably, the method further comprises:
and under the condition that the second unbalanced power is less than the minimum power generated by the diesel power generation system, the diesel power generation system generates power with the minimum generated power, under the condition that the second unbalanced power is greater than the maximum power generated by the diesel power generation system, the diesel power generation system operates with the maximum generated power, and under the condition that the second unbalanced power is between the minimum power generated by the diesel power generation system and the maximum power generated by the diesel power generation system, the generated power of the diesel power generation system is the same as the second unbalanced power of the system.
Preferably, in the case where the diesel power generation system generates power with the minimum generated power, the power of the energy storage system discharge is calculated.
Preferably, in the case where the diesel power generation system generates power at the maximum generated power, the photovoltaic power generation system and the energy storage system provide the maximum generated power.
Preferably, the diesel power generation system does not meet the operating condition, the energy storage system is matched to discharge when the first unbalanced power is greater than 0, and the energy storage system is charged when the first unbalanced power is less than 0.
Preferably, the discharge power of the energy storage system is the same as the first unbalance power.
Preferably, the method further comprises:
and judging whether the average charge quantity of the PQ mode of the energy storage system is larger than a third preset threshold value, if so, stopping charging the energy storage system, and if not, charging the energy storage system at the maximum charging power.
Compared with the related art, the beneficial effects of the application are that: the unbalanced power of the microgrid system is calculated, on the premise that the photovoltaic power generation system is preferentially used for supplying power, the energy storage system or the diesel power generation system is automatically switched to be matched for supplying power according to the unbalanced power of the system, the residual charge amount of the photovoltaic power generation system and the residual charge amount of the diesel power generation system after the photovoltaic power generation system and the diesel power generation system meet the requirement of load power supply are stored in the energy storage system, the charge amount generated by the photovoltaic power generation system and the diesel power generation system can be fully utilized, and further the economic benefit maximization is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is an application scenario diagram of a method for independent microgrid optimization according to an embodiment of the present application;
fig. 2 is a block diagram of a photovoltaic power generation system in the prior art, which is adopted in the embodiment of the present application;
FIG. 3 is a block diagram of a prior art diesel power generation system employed in an embodiment of the present application;
FIG. 4 is a block diagram of a prior art energy storage system as utilized in an embodiment of the present application;
FIG. 5 is a block diagram of a system for independent microgrid optimization of an embodiment of the present application;
fig. 6 is a flow chart of a method of microgrid optimization according to an embodiment of the present application.
Detailed Description
The independent microgrid optimization method provided by the application can be applied to an island power supply system application scene shown in fig. 1.
Fig. 1 is an application scenario diagram of a method for optimizing an independent microgrid according to an embodiment of the present application. The island power supply system comprises a photovoltaic power generation system, a diesel power generation system, an energy storage system and an island load.
Fig. 2 is a block diagram of a photovoltaic power generation system in the prior art according to an embodiment of the present application.
As shown in fig. 2, in which the photovoltaic power generation system stores the amount of charge in the photovoltaic cells, the photovoltaic power generation system is coordinated to supply power based on the power requirements of the entire independent microgrid system.
Fig. 3 is a block diagram of a diesel power generation system in the prior art used in the embodiment of the present application.
As shown in fig. 3, the diesel power generation system may include a number of diesel generators, and a corresponding number of diesel generators may be operated according to the power demand of the entire independent microgrid system.
Figure 4 is a block diagram of a prior art energy storage system used in an embodiment of the present application,
as shown in fig. 4, the energy storage system includes a pcs (power converter system), an energy storage converter, an energy storage battery, etc.; PCS can be classified into PQ and VF modes.
When the energy storage system works, the PCS in the two modes operates, but only the control result in one of the operating modes is input into the control of the next link, and the output result in the other mode which is not input into the next link is shielded and does not produce a control effect.
It is worth mentioning that: the PCS in the PQ mode can adopt a double closed-loop structure, an outer ring is a direct-current voltage ring, an inner ring is a current ring, and the on-off of a switch device of the PCS is controlled by adopting a voltage space vector pulse width modulation method.
The PCS in the VF mode can also adopt a double closed-loop structure, the outer ring is an alternating current voltage ring, the inner ring is a current ring, the on-off of a switch device of the PCS is controlled by adopting a voltage space vector pulse width modulation method, and the energy storage system realizes the charging and discharging process by switching the two operation modes.
The application provides a system that independent microgrid optimizes:
fig. 5 is a block diagram of a system for independent microgrid optimization according to an embodiment of the present application, and is shown in fig. 5.
The control system is respectively in communication connection (connected by a dotted line) with the photovoltaic power generation system, the energy storage system and the diesel power generation system, and the photovoltaic power generation system, the energy storage system, the diesel power generation system and the load are connected by power connecting lines (connected by a solid line).
The embodiment provides an independent microgrid optimization method, and aims to solve the problem that the microgrid is insufficient in use of the amount of electric charge generated by a photovoltaic and diesel power generation system, so that economic benefits are low.
Fig. 6 is a flowchart of a microgrid optimization method according to an embodiment of the present application, and as shown in fig. 6, the flowchart includes steps S601 to S604.
Step S601, calculating first unbalanced power based on the generated power of the photovoltaic power generation system, and obtaining the average charge amount of the PCS in the energy storage system.
It is worth to say that the formula PGeneral assembly－Ppv＝PMedicine for treating rheumatism，
Wherein, PGeneral assemblyThe total power supply power required by the independent micro-grid system, namely the power supply power required by the load of the independent micro-grid, PpvFor the generated power of a photovoltaic power generation system, PMedicine for treating rheumatismIs the first unbalanced power.
When P is presentMedicine for treating rheumatismWhen the quantity of the electric charge generated by the photovoltaic power generation system is less than 0, the quantity of the electric charge generated by the photovoltaic power generation system can meet the total quantity of the electric charge required by the normal operation of the whole independent micro-grid system.
When P is presentMedicine for treating rheumatismWhen the quantity of the electric charges generated by the photovoltaic power generation system is larger than 0, the quantity of the electric charges generated by the photovoltaic power generation system cannot meet the normal operation of the whole independent micro-grid system. And carrying out weighting calculation on the charge quantity collected by the energy storage battery of the energy storage system in real time to obtain the average charge quantity of the PCS.
Step S602, determining whether the diesel power generation system is in an operating state, if so, executing step S603, and if not, executing step S604.
And step S603, judging whether the diesel power generation system meets the shutdown condition or not according to the average charge amount of the PCS and the first unbalanced power.
And step S604, judging whether the diesel power generation system meets the operation condition or not according to the average charge amount of the PCS and the first unbalanced power.
In conclusion, the first unbalanced power is calculated based on the generated power of the photovoltaic power generation system and the total power supply power needed by the independent microgrid, and the average charge amount of the PCS in the energy storage system is obtained.
Whether the diesel power generation system meets the shutdown/operation condition or not is judged according to the average charge quantity and the first unbalanced power of the PCS, so that the working state (the operation state/the shutdown state) of the diesel power generation system can be determined under the condition that the generated power of the photovoltaic power generation system is preferentially used, and the utilization rate of new energy can be improved under the condition that the normal operation of the independent microgrid is ensured.
In some of these embodiments:
whether the diesel power generation system satisfies the shutdown condition may include: the average charge quantity of the PCS of the energy storage system is larger than a first preset value, and the first unbalanced power is smaller than the maximum power discharged by the energy storage system.
It should be noted that the first preset value can be set according to different requirements. And stopping running the diesel power generation system when the electric charge quantity provided by the photovoltaic power generation system and the energy storage system can meet the total electric charge quantity required by the micro-grid. The first balance power in the independent micro-grid is calculated in time, so that the power supply system is switched to a corresponding power supply system for supplying power, the normal operation of the independent micro-grid system is guaranteed, the utilization rate of photovoltaic power generation energy can be improved, and the consumption of a diesel power generation system on disposable energy is reduced. In the aspect of maximizing economic benefit, the sequence of the charge quantity used by the independent microgrid system is as follows: the quantity of electric charge generated by the photovoltaic power generation system, the quantity of electric charge stored by the energy storage system and the quantity of electric charge generated by the diesel power generation system.
In some of these embodiments:
determining that the diesel power generation system satisfies the operating condition may include:average charge amount of PCS is lower than second preset value and first unbalanced power (P)Medicine for treating rheumatism) Greater than the maximum power (P) provided by the photovoltaic power generation systempvmax) Alternatively, the first imbalance power is greater than a maximum power at which the energy storage system discharges. In combination with the above PMedicine for treating rheumatismIn the embodiment, the average charge amount of the PCS in the energy storage system is lower than the second preset value, and PMedicine for treating rheumatism＞PpvmaxAnd the second preset value can be used for setting parameters according to requirements, under the condition, the PCS in the energy storage system can normally operate, and the requirement of power balance of the microgrid system is met, and then the diesel power generation system is matched with the microgrid system to operate for power generation. In another case, PMedicine for treating rheumatism＞PpcsmaxIn this case, PMedicine for treating rheumatismThe power of the diesel oil power generation system is high, the charge quantity of the energy storage system can be consumed completely, the energy storage system cannot guarantee normal operation, and the diesel oil power generation system is required to be operated to generate power in a matched mode.
In some embodiments:
in step S603, if the diesel power generation system does not satisfy the shutdown condition, a second unbalanced power is obtained, where the diesel power generation system generates power at the minimum generated power when the second unbalanced power is less than the minimum power generated by the diesel power generation system, the diesel power generation system operates at the maximum generated power when the second unbalanced power is greater than the maximum power generated by the diesel power generation system, and the generated power of the diesel power generation system is the same as the second unbalanced power when the second unbalanced power is between the minimum power generated by the diesel power generation system and the maximum power generated by the diesel power generation system. It is worth noting that the second unbalanced power is represented by the formula PGeneral assembly－Ppv－PNon-pqP is the second unbalanced power, PNon-pqThe micro-grid control system is used for adjusting the operating power of the PCS and is not controlled by the micro-grid control system. And if the diesel power generation system meets the shutdown condition, stopping running the diesel power generation system.
In still other embodiments:
under the condition that the diesel power generation system generates power with the minimum generating power, in order to meet the power balance of the microgrid system, the photovoltaic power generation system should provide the generating powerSatisfies a first formula, the first formula is PGeneral assembly-Ppcs-Pdgmin＝PpvPtotal is the total power of the microgrid system, PtotalpcsPower discharged for the energy storage system, PdgminMinimum generated power, P, for a diesel power systempvThe generated power is provided for the photovoltaic power generation system.
In still other embodiments:
when the diesel power generation system generates power with the maximum generated power, the photovoltaic power generation system should generate power with the maximum generated power. It is worth noting that, to satisfy the power balance of the microgrid system,
generated power that the energy storage system should provide: pGeneral assembly-Ppvmax-Pdgmax＝Ppcs；
PpvmaxMaximum generated power, P, for a photovoltaic power generation systemdgmaxThe maximum generated power provided by the diesel power generation system.
Thus further:
when the sum of the maximum generating power of the photovoltaic power generation system, the energy storage system and the diesel power generation system in the microgrid system cannot meet the total power of the microgrid system, namely Ppvmax+Pdgmax+Ppcsmax＜PGeneral assemblyThe micro-grid system can close the unnecessary power utilization module to close the unnecessary power utilization power, so that the total power of the micro-grid system is reduced, and the power balance of the micro-grid system is further achieved.
In some embodiments:
in order to improve the utilization rate of energy,
in step S604, in a state where the diesel power generation system is stopped, whether the diesel power generation system satisfies an operation condition is determined according to the average charge amount of the energy storage converter and the first unbalanced power,
if not, under the condition that the first unbalanced power is larger than 0, the energy storage system is matched for discharging, namely the generated power of the photovoltaic power generation system cannot meet the power required by the microgrid system, and the generated power which is required by the energy storage system is provided for meeting the power balance of the microgridElectric power and PMedicine for treating rheumatismThe same is true. And under the condition that the first unbalanced power is less than 0, charging the energy storage system.
If the first unbalanced power is matched with the second unbalanced power, the diesel power generation system is started to enter an operation state to generate power. The residual charge quantity of the power supply power required by the independent micro-grid system is stored in the energy storage system and is matched and utilized at the next moment, so that the utilization rate of energy can be improved.
According to the judgment result, the energy efficient utilization under the operation condition of the diesel engine (oil engine) can be met, the energy efficient utilization of the micro-grid can be realized under the condition of no operation, and the system balance is realized.
In some of these embodiments:
under the condition that the diesel power generation system is in a shutdown state and the first unbalanced power is smaller than 0, the charge amount provided by the photovoltaic power generation system can meet the charge amount required by the micro-grid system, and the residual charge amount can be used for charging the energy storage system. And judging whether the average charge amount of the PCS in the energy storage system PQ mode is smaller than a third preset threshold value, if so, stopping charging the energy storage system, and if not, charging the energy storage system at the maximum charging power. And the third preset threshold is a preset threshold of the charging cut-out condition of the energy storage system. And on the principle of protecting the energy storage system, when the charging reaches a certain threshold value, the charging is automatically disconnected.
The present embodiment also provides an electronic device comprising a memory having a computer program stored therein and a processor configured to execute the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
and S1, calculating first unbalanced power based on the generated power of the photovoltaic power generation system, and acquiring the average charge amount of the PCS.
And S2, judging whether the diesel power generation system meets the stop condition or not when the diesel power generation system is in the running state.
And S3, judging whether the diesel power generation system meets the operation condition or not when the diesel power generation system is in a stop state.
It should be noted that, for specific examples in this embodiment, reference may be made to examples described in the foregoing embodiments and optional implementations, and details of this embodiment are not described herein again.
In addition, in combination with the method for optimizing the independent microgrid in the above embodiment, the embodiment of the present application may provide a storage medium to implement. The storage medium having stored thereon a computer program; the computer program, when executed by a processor, implements any of the above-described embodiments of the method for independent microgrid optimization.
Claims (10)
1. A method of independent microgrid optimization, the independent microgrid comprising a diesel power generation system, a photovoltaic power generation system and an energy storage system, characterized in that the method comprises:
calculating a first unbalance power based on the generated power of the photovoltaic power generation system,
acquiring the average charge quantity of the PCS;
judging whether the diesel power generation system meets a shutdown condition or not when the diesel power generation system is in an operating state;
and judging whether the diesel power generation system meets the operation condition or not when the diesel power generation system is in a shutdown state.
2. The method of claim 1, wherein the diesel power generation system satisfying a shutdown condition comprises:
the average charge amount of an energy storage converter of the energy storage system is larger than a first preset value, and the first unbalanced power is smaller than the maximum power discharged by the energy storage system.
3. The method of claim 1, wherein the diesel power generation system satisfying an operating condition comprises:
the average charge amount of the PCS is lower than a second preset value, and the first unbalanced power is larger than the maximum power provided by the photovoltaic power generation system, or the first unbalanced power is larger than the maximum power discharged by the energy storage system.
4. The method of claim 2, wherein a second imbalance power is obtained when the diesel power generation system does not meet a shutdown condition.
5. The method of claim 4, further comprising:
and under the condition that the second unbalanced power is less than the minimum power generated by the diesel power generation system, the diesel power generation system generates power with the minimum generated power, under the condition that the second unbalanced power is greater than the maximum power generated by the diesel power generation system, the diesel power generation system operates with the maximum generated power, and under the condition that the second unbalanced power is between the minimum power generated by the diesel power generation system and the maximum power generated by the diesel power generation system, the generated power of the diesel power generation system is the same as the second unbalanced power of the system.
6. The method of claim 5, wherein the power discharged by the energy storage system is calculated with the diesel power generation system generating power at a minimum generated power.
7. The method of claim 5, wherein the photovoltaic power generation system and the energy storage system provide maximum generated power in the event the diesel power generation system generates power at a maximum generated power.
8. The method of claim 3, wherein the diesel power generation system does not meet operating conditions, and wherein the energy storage system is configured to discharge when the first imbalance power is greater than 0 and charge when the first imbalance power is less than 0.
9. The method of claim 8, wherein a discharge power of the energy storage system is the same as the system first imbalance power.
10. The method of claim 8, further comprising:
and judging whether the average charge quantity of the PQ mode of the energy storage system is larger than a third preset threshold value, if so, stopping charging the energy storage system, and if not, charging the energy storage system at the maximum charging power.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767445.2A CN113659613A (en) | 2021-07-07 | 2021-07-07 | Independent micro-grid optimization method |
| PCT/CN2021/123926 WO2023279566A1 (en) | 2021-07-07 | 2021-10-14 | Independent microgrid optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110767445.2A CN113659613A (en) | 2021-07-07 | 2021-07-07 | Independent micro-grid optimization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113659613A true CN113659613A (en) | 2021-11-16 |
Family
ID=78489961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110767445.2A Pending CN113659613A (en) | 2021-07-07 | 2021-07-07 | Independent micro-grid optimization method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113659613A (en) |
| WO (1) | WO2023279566A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118739416B (en) * | 2024-09-02 | 2024-11-05 | 华能新能源股份有限公司山西分公司 | Distributed photovoltaic unplanned island operation method, system, equipment and medium |
| CN118826145B (en) * | 2024-09-19 | 2025-01-07 | 浙江时代兰普新能源有限公司 | Control method and device of micro-grid hybrid control system and computer equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151798A (en) * | 2013-03-27 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Optimizing method of independent microgrid system |
| CN107492910A (en) * | 2017-10-10 | 2017-12-19 | 北京四方继保自动化股份有限公司 | A kind of off-network micro-capacitance sensor Self Adaptive Control of the storage containing bavin and main power source switching method |
| CN108258728A (en) * | 2018-01-29 | 2018-07-06 | 中国人民解放军军事科学院国防工程研究院 | A kind of control method of the adjustable degree type wind-solar-diesel storage independent micro-grid based on droop control |
| CN109167381A (en) * | 2018-08-01 | 2019-01-08 | 中国电力科学研究院有限公司 | A kind of microgrid control method and topological structure |
| CN109873452A (en) * | 2019-03-25 | 2019-06-11 | 中国电建集团江西省电力建设有限公司 | The off-network state electricity control system of energy internet |
| US20200067318A1 (en) * | 2018-08-23 | 2020-02-27 | Korea Institute Of Energy Research | Mobile micro-grid unit and micro-grid system |
| CN111628522A (en) * | 2020-04-27 | 2020-09-04 | 合肥阳光新能源科技有限公司 | Light storage diesel micro-grid system and control method thereof |
| CN111953016A (en) * | 2020-07-27 | 2020-11-17 | 江苏大学 | A mobile multi-energy microgrid control method and system |
| CN112821466A (en) * | 2021-01-08 | 2021-05-18 | 湖北工业大学 | Independent micro-grid capacity configuration method containing photo-thermal power generation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236718B (en) * | 2013-03-26 | 2014-12-31 | 东北大学 | Source-network-load automatic control system and method for intelligent microgrid |
| CN105990838B (en) * | 2016-05-17 | 2019-01-18 | 杭州电子科技大学 | A kind of island microgrid Optimization Scheduling of meter and schedulable and translatable load |
| CN106849343B (en) * | 2017-01-23 | 2019-05-17 | 武汉理工大学 | The independently-powered switching system of communication base station wind-solar-diesel storage and power switching method |
| CN106877407A (en) * | 2017-03-24 | 2017-06-20 | 南京国电南自电网自动化有限公司 | A kind of wind-solar-diesel storage type micro electric network coordination controls optimization method |
| CN109038670A (en) * | 2018-08-24 | 2018-12-18 | 深圳市汉储能源科技有限公司 | A kind of micro-capacitance sensor and energy-storage system controller |
| CN110460101A (en) * | 2019-09-05 | 2019-11-15 | 北京双登慧峰聚能科技有限公司 | Island microgrid energy storage subsystem and control method |
-
2021
- 2021-07-07 CN CN202110767445.2A patent/CN113659613A/en active Pending
- 2021-10-14 WO PCT/CN2021/123926 patent/WO2023279566A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151798A (en) * | 2013-03-27 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Optimizing method of independent microgrid system |
| CN107492910A (en) * | 2017-10-10 | 2017-12-19 | 北京四方继保自动化股份有限公司 | A kind of off-network micro-capacitance sensor Self Adaptive Control of the storage containing bavin and main power source switching method |
| CN108258728A (en) * | 2018-01-29 | 2018-07-06 | 中国人民解放军军事科学院国防工程研究院 | A kind of control method of the adjustable degree type wind-solar-diesel storage independent micro-grid based on droop control |
| CN109167381A (en) * | 2018-08-01 | 2019-01-08 | 中国电力科学研究院有限公司 | A kind of microgrid control method and topological structure |
| US20200067318A1 (en) * | 2018-08-23 | 2020-02-27 | Korea Institute Of Energy Research | Mobile micro-grid unit and micro-grid system |
| CN109873452A (en) * | 2019-03-25 | 2019-06-11 | 中国电建集团江西省电力建设有限公司 | The off-network state electricity control system of energy internet |
| CN111628522A (en) * | 2020-04-27 | 2020-09-04 | 合肥阳光新能源科技有限公司 | Light storage diesel micro-grid system and control method thereof |
| CN111953016A (en) * | 2020-07-27 | 2020-11-17 | 江苏大学 | A mobile multi-energy microgrid control method and system |
| CN112821466A (en) * | 2021-01-08 | 2021-05-18 | 湖北工业大学 | Independent micro-grid capacity configuration method containing photo-thermal power generation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023279566A1 (en) | 2023-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101775957B1 (en) | Power applying system for connecting photovoltaic power generating apparatus | |
| US12021405B2 (en) | Electricity power storage and distribution method, device and system | |
| CN109274088B (en) | Energy control method, energy control device, energy management system and storage medium | |
| CN103151799B (en) | A kind of micro-capacitance sensor electric power system and control method | |
| CN106471696A (en) | The method and apparatus running the power station of performance inconsistency being also connected to limited AC network in addition to grid generator and at least one load | |
| CN113659613A (en) | Independent micro-grid optimization method | |
| JP2002218654A (en) | Photovoltaic power generation system | |
| CN102903942B (en) | Control method and device for output power of fuel cell | |
| KR100844401B1 (en) | Uninterruptible Power Supply with Solar Power Generator | |
| CN103904768B (en) | Method for controlling power supply and power supply control apparatus | |
| CN109494860B (en) | Online interactive solar grid-connected and off-grid energy storage three-in-one all-in-one machine and control method | |
| Garrido-Sarasol et al. | Technical performance analysis of high-voltage battery-based photovoltaic water pumping systems | |
| Tarun et al. | Solar based electric vehicle charging station | |
| WO2024131045A1 (en) | Photovoltaic apparatus and method for increasing photovoltaic utilization rate of photovoltaic apparatus | |
| AU2011375679A1 (en) | A power management system and method for optimizing fuel consumption | |
| CN110535233A (en) | Base station power supply system and method | |
| CN115579945A (en) | Light storage and charging system and charging and discharging control method thereof | |
| CN109599898B (en) | Control method and device for improving consumption of distributed power supply | |
| CN117220324B (en) | Hybrid energy storage system and control method thereof | |
| CN118971160B (en) | Control method and device of power generation system and power generation system | |
| CN104578123A (en) | Micro grid system framework for improving robustness and energy control method | |
| CN203491709U (en) | Microgrid framework improving robustness | |
| US12191664B2 (en) | Power system and method | |
| CN112531801B (en) | Charging method and device | |
| Druga et al. | Stand-alone wind power system operating with a specific storage structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211116 |