CN111224428A - Light storage diesel micro-grid system and control method thereof - Google Patents

Light storage diesel micro-grid system and control method thereof Download PDF

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CN111224428A
CN111224428A CN202010134936.9A CN202010134936A CN111224428A CN 111224428 A CN111224428 A CN 111224428A CN 202010134936 A CN202010134936 A CN 202010134936A CN 111224428 A CN111224428 A CN 111224428A
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diesel
power
storage system
load
light
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CN111224428B (en
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孙德亮
邹绍琨
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Hefei Sungrow New Energy Technology Co Ltd
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Hefei Sungrow New Energy Technology Co Ltd
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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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed 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
    • 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
    • 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
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

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  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The method comprises the steps of firstly, controlling a diesel generator system to independently operate and supply power in an optimal operation efficiency interval and meet the load power consumption requirement, and after judging that the light storage system meets the cut-in condition, controlling the light storage system to cut in so that the diesel generator system and the light storage system jointly operate and supply power in the optimal operation efficiency interval and jointly meet the load power consumption requirement; after the light storage system is judged to meet the switching-out condition, the light storage system is controlled to be switched out, so that the diesel generator system can independently operate to supply power in the optimal operation efficiency range and meet the load power consumption requirement; that is, the diesel generator system is used as a main source, the light storage system executes switching operation according to the self condition, so that the diesel generator in the diesel generator system is dynamically adjusted in the maximum efficiency interval, the diesel output is less when the photovoltaic output is more, and the condition of photovoltaic limited power waste is reduced.

Description

Light storage diesel micro-grid system and control method thereof
Technical Field
The invention relates to the technical field of operation control, in particular to an optical storage diesel micro-grid system and a control method thereof.
Background
Today, power grid technology and power supply conditions are increasingly developed, some dead areas which cannot be covered by power grids in southeast Asia countries (such as Indonesia, Markov and the like), island areas in China and remote mountainous areas and the like still exist, and power utilization in the areas is generally solved by diesel generators. If the scale of the dead zone is large, a plurality of large diesel generators are required to be connected in parallel to form a large off-grid power supply system to supply power to the dead zone.
It is known that a power supply system composed of diesel generators has a series of problems such as noise, pollution and high cost. With the progress of photovoltaic power generation and energy storage technology and the reduction of cost, aiming at areas with better illumination conditions, a light storage system with a certain proportion is added into an original power supply system to form a light storage diesel power generation system, so that the fuel consumption of the original diesel generator system can be reduced, the total energy consumption cost of the system can be reduced, and the pollution and the noise can be reduced.
However, the light storage system and the diesel engine are operated in a matched manner, and due to the randomness of photovoltaic power generation, a lot of challenges are brought to the stable operation control of the on-line system, and how to improve the overall operation economy of the system on the premise of meeting the stable operation of the system is a problem to be solved urgently at present.
Disclosure of Invention
Therefore, the light storage diesel micro-grid system and the control method thereof can improve the economic efficiency of the overall operation of the system on the premise of meeting the requirement of stable operation of the system.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the application discloses in a first aspect, a control method of an optical storage diesel microgrid system is characterized in that the control method is applied to a central controller of the optical storage diesel microgrid system, and the control method comprises the following steps:
controlling a diesel generator system of the light storage diesel micro-grid system to independently operate and supply power in an optimal operation efficiency interval, and meeting the load power consumption requirement of the light storage diesel micro-grid system;
judging whether an optical storage system of the optical storage diesel micro-grid system meets a cut-in condition or not;
if the light storage system of the light storage diesel micro-grid system meets the cut-in condition, controlling the cut-in of the light storage system, so that the diesel generator system and the light storage system jointly run to supply power in the optimal running efficiency range and jointly meet the load power utilization requirement of the light storage diesel micro-grid system;
judging whether an optical storage system of the optical storage diesel micro-grid system meets a switching-out condition or not;
if the light-out system of the light storage diesel micro-grid system meets the cut-out condition, the light storage system is controlled to be cut out, so that the diesel generator system is in independent operation power supply in the optimal operation efficiency interval and meets the load power utilization requirement of the light storage diesel micro-grid system.
Optionally, in the control method of the light-storage diesel microgrid system, the cut-in condition is as follows: the current SOC of an energy storage system in the optical storage system is increased to a preset cut-in SOC;
the cutting conditions were: the current SOC is reduced to a preset cut-out SOC.
Optionally, in the control method of the light storage diesel microgrid system, when controlling a diesel generator system of the light storage diesel microgrid system to independently operate and supply power in an optimal operation efficiency interval and meet a load power demand of the light storage diesel microgrid system, the method further includes:
judging whether the current illumination meets the power generation condition of a photovoltaic system in the light storage system;
and if the current illumination meets the power generation condition of the photovoltaic system, controlling the photovoltaic system to generate power, and fully charging the energy storage system with the generated energy of the photovoltaic system until the current SOC of the energy storage system is greater than the preset cut-in SOC.
Optionally, in the control method of the light storage diesel microgrid system, the step of controlling a diesel generator system of the light storage diesel microgrid system to independently operate and supply power in an optimal operation efficiency interval and meet a load power demand of the light storage diesel microgrid system includes:
determining the optimal operation efficiency interval;
calculating to obtain the maximum operation number and the minimum operation number of the diesel generators under the current load condition according to the optimal operation efficiency interval and the current load power;
and adjusting the number of the diesel generators according to the relationship between the current number of the diesel generators and the maximum number and the minimum number of the diesel generators to change the number of the diesel generators between the maximum number and the minimum number.
Optionally, in the control method of the light-storage diesel microgrid system, the determining the optimal operating efficiency interval includes:
according to the formula
Figure BDA0002396991350000031
Calculating to obtain all load rates of the diesel generator under different real-time powers;
according to the oil consumption curve of the diesel generator, determining the load factor of which the oil consumption is less than or equal to a preset value in all the load factors as the optimal operation efficiency interval;
wherein η is the load factor of the diesel generator, PdIs the real-time power, P, of the diesel generatord_ratedThe rated power of the diesel generator.
Optionally, in the control method of the optical storage diesel microgrid system, the maximum operating number and the minimum operating number of the diesel generators under the current load condition are obtained by calculating according to the optimal operating efficiency interval and the current load power, and the calculation formula adopted is as follows:
Figure BDA0002396991350000032
wherein, nummaxNum is the maximum number of running diesel generatorsminThe minimum number of the diesel generators is defined, ceil is the calculation result rounded up, PloadFor the current load power, Pd_ratedis the rated power, eta, of the diesel generatorminminimum operating efficiency, η, of said optimum operating efficiency intervalmaxAnd the maximum operation efficiency of the optimal operation efficiency interval is obtained.
Optionally, in the control method of the light-storage diesel microgrid system, the adjusting the number of operating diesel generators according to a relationship between the current number of operating diesel generators and the maximum number and the minimum number of operating diesel generators to change the number of operating diesel generators between the maximum number and the minimum number includes:
if num > nummaxAdjusting the number of the diesel generators to nummax；
If num > numminAdjusting the number of the diesel generators to nummin；
If nummin＜num＜nummaxIf so, not adjusting the number of the diesel generators;
wherein num is the number of the current diesel generators, nummaxNum is the maximum number of running diesel generatorsminThe minimum number of the diesel generators.
Optionally, in the control method of the light-storage diesel microgrid system, controlling the light-storage system to switch in to enable the diesel generator system to jointly operate with the light-storage system to supply power within the optimal operating efficiency interval and to jointly meet a load power demand of the light-storage diesel microgrid system includes:
controlling the optical storage system to switch in;
according to the formula
Figure BDA0002396991350000041
Calculating to obtain the number of running diesel generators needing to be cut in the diesel generator system; wherein, numreplFor the number of running diesel generators to be cut off, floor is the calculation result rounded down, Pess_ratedIs the rated power, P, of the energy storage systemd_ratedis the rated power, eta, of the diesel generatormaxThe maximum operation efficiency of the optimal operation efficiency interval is obtained;
cutting off a corresponding number of diesel generators in the diesel generator system;
adjusting the output power of a photovoltaic system and the output power of an energy storage system in the light-storage diesel micro-grid system in real time;
and adjusting the number of the diesel generators in real time according to the output power of the photovoltaic system and the output power of the energy storage system, so that the diesel generators in each operation work in the optimal operation efficiency interval.
Optionally, in the control method of the light-storage diesel microgrid system, the adjusting the output power of the photovoltaic system and the output power of the energy storage system in the light-storage diesel microgrid system in real time includes:
if Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC > SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Pload-num×ηmin；
If Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC < SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝Ppv-(Pload-num×Pd_rated×ηmin)，Ppv＝Ppv_mppt；
If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC < SOCminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Ppv_mppt；
If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC > SOCminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝-(Pload-num×Pd_rated×ηmax)，Ppv＝Ppv_mppt；
If Pload-num×Pd_rated×ηmax＜Ppv_mppt＜Pload-num×Pd_rated×ηminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Ppv_mppt；
Wherein, Ppv_mpptMppt power, P, for the photovoltaic systemloadFor the current load power, Pd_ratedis rated power of the diesel generator, num is the number of the current diesel generators, ηminminimum operating efficiency, η, of the optimum operating efficiency intervalmaxThe maximum operation efficiency in the optimal operation efficiency interval is the current SOC of the energy storage system, and the SOC is the current SOC of the energy storage systemmaxIs the maximum electric quantity limit value, SOC, of the energy storage systemminIs the minimum electric quantity limit value, P, of the energy storage systempcsIs the output power of the energy storage system, PpvIs the output power of the photovoltaic system.
Optionally, in the control method of the light storage diesel microgrid system, the controlling of switching out the light storage system to enable the diesel generator system to independently operate and supply power in the optimal operating efficiency interval and meet the load power demand of the light storage diesel microgrid system includes:
and calculating to obtain the number of diesel generators needing to operate in the diesel generator system, controlling the diesel generators with corresponding number to be put into operation, and controlling the light storage system to be switched out, so that the diesel generator system independently operates to supply power in the optimal operation efficiency range, and the load power consumption requirement of the light storage diesel micro-grid system is met.
The second aspect of the application discloses light stores up firewood microgrid system includes: a central controller, at least one light storage system and at least one diesel generator system;
wherein the light storage system comprises at least one photovoltaic system and at least one energy storage system; the diesel generator system comprises at least two diesel generators;
the output end of the photovoltaic system, the input and output end of the energy storage system and the output end of the diesel generator are connected with an alternating current bus of the light storage diesel micro-grid system;
the control end of the photovoltaic system, the control end of the energy storage system and the control end of the diesel generator system are all in communication connection with the central controller, and the central controller is configured to execute any one of the control methods disclosed in the first aspect.
The method comprises the steps of firstly controlling a diesel generator system of the light-storage diesel microgrid system to independently operate and supply power in an optimal operation efficiency interval and meet the load power consumption requirement of the light-storage diesel microgrid system, and after judging that the light-storage system of the light-storage diesel microgrid system meets the cut-in condition, controlling the light-storage system to cut in, so that the diesel generator system and the light-storage system jointly operate and supply power in the optimal operation efficiency interval and jointly meet the load power consumption requirement of the light-storage diesel microgrid system; after the light storage system of the light storage diesel micro-grid system meets the switching-out condition, the light storage system is controlled to be switched out, so that the diesel generator system independently operates to supply power in the optimal operation efficiency range, and the load power utilization requirement of the light storage diesel micro-grid system is met; that is, the diesel generator system in the light storage diesel micro-grid system is used as a main source, the light storage system executes switching operation according to self conditions, so that the diesel generator in the diesel generator system is dynamically adjusted in a maximum efficiency interval, diesel output is less when photovoltaic output is more, photovoltaic power generation limiting waste is reduced, and the economy of the overall operation of the system can be improved on the premise of meeting the requirement of stable operation of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical storage diesel microgrid system according to an embodiment of the present application;
fig. 2 is a flowchart of a control method of an optical storage diesel microgrid system according to an embodiment of the present application;
fig. 3 is a flowchart of another control method for an optical storage diesel microgrid system according to an embodiment of the present application;
FIG. 4 is a flow chart illustrating a method for controlling independent operation of a diesel generator system to supply power according to an embodiment of the present disclosure;
FIG. 5 is a flowchart illustrating a method for determining an optimal operating efficiency interval for a diesel generator according to an embodiment of the present disclosure;
fig. 6 is a specific control flowchart for controlling the switching-in of the optical storage system according to an embodiment of the present disclosure;
fig. 7 is a specific control flowchart for controlling switching out of the optical storage system according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present application provides an optical storage diesel microgrid system, please refer to fig. 1, which includes: a central controller (MGCC) 101, at least one light storage system 102 and at least one diesel generator system 103.
Wherein the light storage system 102 includes at least one photovoltaic system and at least one energy storage system (one is shown in fig. 1 as an example); the diesel generator system 103 includes at least two diesel generators (e.g., diesel generator 1, diesel generator 2 … diesel generator n shown in fig. 1).
The output end of the photovoltaic system, the input and output end of the energy storage system and the output end of the diesel generator are connected with an alternating current bus of the light storage diesel micro-grid system.
In practical application, a diesel generator system 103 formed by connecting n (n is an integer greater than 2) diesel generators in parallel can be used as a main power grid of the light storage diesel micro-grid system, and a photovoltaic system and an energy storage system are connected in a grid for operation and provide electric energy for a load together.
The control end of the photovoltaic system, the control end of the energy storage system and the control end of the diesel generator system 103 are all connected with the central controller 101 in a communication mode.
Due to the power generation randomness of the photovoltaic system, a plurality of challenges are brought to the stable operation control of the on-line system, and how to improve the overall operation economy of the system on the premise of meeting the stable operation of the system is a problem to be solved urgently at present. On the basis of the light-storage diesel microgrid system shown in fig. 1, the application also provides a control method of the light-storage diesel microgrid system, and the overall operation economy of the system can be improved on the premise of meeting the requirement of stable operation of the system.
First, the maximum number of the diesel generators in the diesel generator system 103 is n, and the diesel generator system 103 formed by the diesel generators is a main grid of the optical storage diesel microgrid system. When multiple diesel generators in the diesel generator system 103 are operated in parallel, the operating diesel generators all operate in a droop mode. Assuming that the diesel generators operating in the light-storage diesel micro-grid system have the same droop characteristic curve, the power to be borne by the system can be equally divided, and the photovoltaic system and the energy storage system are both operated in a PQ control mode in a grid-connected mode, the diesel generator system 103 needs to operate a certain number of diesel generators in order to meet the stable operation requirement of the system.
The control method of the optical storage diesel microgrid system is applied to a central controller 101 of the optical storage diesel microgrid system, please refer to fig. 2, and the control method mainly comprises the following steps:
s101, controlling a diesel generator system of the light storage diesel micro-grid system to independently operate and supply power in an optimal operation efficiency interval, and meeting the load power consumption requirement of the light storage diesel micro-grid system.
S102, judging whether the light storage system of the light storage diesel micro-grid system meets a cut-in condition or not.
Wherein the cutting-in conditions are as follows: and increasing the current SOC of an energy storage system in the light storage system to a preset cut-in SOC.
The current SOC of the energy storage system is the current residual capacity of the energy storage system in the light storage diesel micro-grid system, and the English of the SOC is called as: StateOfCharge. Specifically, the central controller may obtain the current SOC of the energy storage system through a Battery Management System (BMS) in the energy storage system.
The preset cut-in SOC is an electric quantity limiting value set for the energy storage system when the light storage system can be put into operation. The specific value of the preset cut-in SOC can be determined according to specific application environment and user requirements, and the application is not particularly limited and belongs to the protection range of the application.
If the light storage system of the light storage diesel microgrid system is judged to meet the cut-in condition, step S103 is executed.
And S103, controlling the switching-in of the light storage system, so that the diesel generator system and the light storage system run together to supply power in the optimal running efficiency range, and the load power utilization requirement of the light storage diesel micro-grid system is met together.
Specifically, after the current SOC is increased to the preset cut-in SOC, it is indicated that the current SOC of the energy storage system meets the condition of releasing electric energy of the light storage system to supply power to the load, and the light storage system can be controlled to be cut in to operate in combination with the diesel generator to supply power to the load together, so that fuel loss caused by independent operation of the diesel generator is reduced, and the economical efficiency of system operation is improved.
And S104, judging whether the light storage system of the light storage diesel micro-grid system meets a switching-out condition.
Wherein the cutting conditions are as follows: the current SOC is reduced to the preset cut-out SOC.
The preset cut-out SOC is an electric quantity limit value set when the optical storage system quits operation.
In practical application, the value of the preset cut-in SOC may be set to be greater than the value of the preset cut-out SOC, that is, the cut-in operation may be performed on the energy storage system only when the SOC of the energy storage system reaches a certain value, and the cut-out operation may be performed when the SOC is lower than the certain value. The specific value of the preset cut-out SOC can be determined according to specific application environment and user requirements, and the application is not particularly limited and belongs to the protection range of the application.
If the current SOC of the energy storage system is obtained according to the preset period, the current value of the SOC of the energy storage system and the value of a previous period of time can be obtained, and therefore whether the change trend of the SOC of the energy storage system is gradually increased or decreased is known.
If the light-out system of the light-out diesel microgrid system meets the switching-out condition, executing step S105.
And S105, controlling the light storage system to be switched out, enabling the diesel generator system to independently operate and supply power in the optimal operation efficiency interval, and meeting the load power utilization requirement of the light storage diesel micro-grid system.
Specifically, when the current SOC is gradually reduced but not reduced to the preset cut-out SOC, if the power generation of the photovoltaic system is low or the power generation condition is not satisfied at this time, the energy storage system can also discharge power to maintain the overall output of the photovoltaic system. However, after the current SOC is reduced to the preset cut-out SOC, it indicates that if the electricity generated by the photovoltaic system is low or the electricity generation condition is not satisfied at this time, the electricity generated by the whole photovoltaic system is too low, and the photovoltaic system needs to be cut out and the number of diesel generators in the diesel generator system needs to be increased to ensure that sufficient electricity can be supplied to the load.
According to the control method of the light storage diesel micro-grid system, the diesel generator system is used as a main source, the light storage system executes switching operation according to self conditions, the diesel generator in the diesel generator system is dynamically adjusted in a maximum efficiency interval, diesel output is less when photovoltaic output is more, photovoltaic power limiting waste is reduced, and the economy of the whole operation of the system can be improved on the premise of meeting the requirement of stable operation of the system.
In another embodiment provided by the present application, while executing step S101 and controlling the diesel generator system of the optical storage diesel-electric micro grid system to independently operate and supply power within the optimal operating efficiency interval to meet the load power demand of the optical storage diesel-electric micro grid system, please refer to fig. 3, the control method further includes the following steps:
and S106, judging whether the current illumination meets the power generation condition of the photovoltaic system in the light storage system.
If the current illumination meets the power generation condition of the photovoltaic system, step S107 is executed.
And S107, controlling the photovoltaic system to generate power, and fully charging the energy storage system with the generated energy of the photovoltaic system until the current SOC of the energy storage system is greater than the preset cut-in SOC.
In practical application, when the current SOC is not increased to the preset cut-in SOC, that is, the diesel generator operates independently to supply power to the load, and the current illumination condition meets the power generation condition of the photovoltaic system, the full amount of the power generated by the photovoltaic system is preferentially charged for storing energy, and the light storage system is controlled to be cut in when the SOC of the energy storage system is greater than the preset cut-in SOC, that is, the light storage system meets the cut-in condition. And in the process that the photovoltaic system charges the energy storage system in full, the diesel generator system independently operates to supply power, so that the use of the energy storage system can be reduced, and the charging and discharging loss and the service life loss of the energy storage system are reduced.
Optionally, referring to fig. 4, in step S101, the process of controlling the diesel generator system of the optical storage diesel-electric micro grid system to independently operate and supply power within the optimal operation efficiency interval and meet the load power demand of the optical storage diesel-electric micro grid system mainly includes the following steps:
s201, determining an optimal operation efficiency interval.
In practical application, please refer to fig. 5, the specific method for determining the optimal operating efficiency interval includes the following steps:
s301, according to the formula
Figure BDA0002396991350000101
And calculating to obtain the total load rate of the diesel generator under different real-time powers.
wherein η is the load factor of the diesel generator, PdIs the real-time power of a diesel generator, Pd_ratedIs the rated power of the diesel generator.
302. And determining the load carrying rate with the oil consumption less than or equal to a preset value in all the load carrying rates as an optimal operation efficiency interval according to the oil consumption curve of the diesel generator.
specifically, the diesel generator has different load carrying rates under different real-time powers, and the corresponding oil consumption under different real-time powers is different, so that the corresponding minimum operating efficiency eta can be obtained when the oil consumption is equal to the preset valueminand maximum operating efficiency ηmaxas an end point, [ eta ]min，ηmax]As the optimal operation efficiency interval of the diesel generator.
The specific value of the preset value can be determined according to the application environment and the user requirement, and the application is not particularly limited and belongs to the protection scope of the application.
S202, calculating to obtain the maximum running number and the minimum running number of the diesel generators under the current load condition according to the optimal running efficiency interval and the current load power.
The current load power is the power currently consumed by the load in the optical storage diesel micro-grid system.
In practical application, according to the optimal operation efficiency interval and the current load power, the maximum operation number and the minimum operation number of the diesel generator under the current load condition are obtained by calculation, and the adopted calculation formula is as follows:
Figure BDA0002396991350000102
wherein, nummaxNum is the maximum number of running diesel generatorsminThe minimum number of the diesel generators, ceil, P, is the calculation result rounded uploadFor the current load power, Pd_ratedis rated power of diesel generator, etaminminimum operating efficiency, η, of the optimum operating efficiency intervalmaxThe maximum operation efficiency of the optimal operation efficiency interval.
S203, adjusting the number of the diesel generators according to the relation between the current number of the diesel generators and the maximum number and the minimum number of the diesel generators to enable the number of the diesel generators to change between the maximum number and the minimum number.
Specifically, the method comprises the following steps:
(1) if num＞nummaxAdjusting the number of diesel generators to nummax。
(2) If num > numminAdjusting the number of diesel generators to nummin。
(3) If nummin＜num＜nummaxThe number of operating diesel generators is not adjusted.
Wherein num is the number of the current diesel generators, nummaxMaximum number of operating diesel generators, numminIs the minimum number of running diesel generators.
In this embodiment, in the process of controlling the diesel generator system of the optical storage diesel microgrid system to independently operate and supply power in the optimal operating efficiency interval and meet the load power consumption requirement of the optical storage diesel microgrid system, the number of operating diesel generators is adjusted according to the current number of operating diesel generators and the relationship between the maximum number of operating diesel generators and the minimum number of operating diesel generators, so that the number of operating diesel generators changes between the maximum number of operating diesel generators and the minimum number of operating diesel generators, the diesel generators are ensured to operate in the optimal fuel consumption interval, the diesel consumption of the diesel generator system is reduced, and the power generation cost is reduced.
In another embodiment provided by the present application, a specific process of executing step S105 and controlling the switching-out of the optical storage system to enable the diesel generator system to independently operate for power supply within the optimal operation efficiency interval and meet the load power demand of the optical storage diesel micro grid system is shown in fig. 6, and includes the following steps:
s401, controlling the switching-in of the optical storage system.
S402, according to the formula
Figure BDA0002396991350000111
And calculating to obtain the number of the diesel generators needing to be cut off in the diesel generator system.
Wherein, numreplFor the number of running diesel generators to be cut off, floor is the calculation result rounded down, Pess_ratedRated power of the stored energy system, Pd_ratedGenerating electricity for dieselrated power of the machine, ηmaxThe maximum operation efficiency of the optimal operation efficiency interval.
And S403, cutting off the diesel generators with corresponding number in the diesel generator system.
In practical application, in order to ensure stable and reliable operation of the system, the photovoltaic system is controlled to be switched in, and then the diesel generators with the corresponding number in the diesel generator system are cut off according to the calculated number of the diesel generators to be cut off in the diesel generator system.
S404, adjusting the output power of the photovoltaic system and the output power of the energy storage system in the light-storage diesel micro-grid system in real time.
It should be noted that, when the light storage system of the light storage diesel microgrid system is judged to meet the cut-in condition, after the system executes the cut-in operation, that is, after the current SOC of the energy storage system is increased to the preset cut-in SOC and the light storage system is cut in:
if the lighting conditions are better, P shown belowpv_mppt＞Pload-num×Pd_rated×ηminIf the photovoltaic system outputs mppt power, the generated energy preferentially supplies power to the load, and the rest part of the generated energy continues to charge the energy storage system, namely, the (2) th condition; of course, in practical application, the electric energy output by the photovoltaic system can be set to preferentially charge the energy storage system. After the energy storage system is fully charged, the photovoltaic system is connected to the grid for power generation, the diesel generators which run with the minimum number of running units in the diesel generator system generate power, the diesel generators and the load supply power together, and the photovoltaic system enters a power generation limiting state, namely the condition (1) in the following.
If the lighting conditions are poor, P is shown belowpv_mppt＜Pload-num×Pd_rated×ηmaxIf the energy storage system is not completely discharged at the moment, the photovoltaic system is controlled to output mppt power, the energy storage system is discharged, the diesel generator system operates, and the three are used for supplying power for the load together, namely the situation of (4) below; if the energy storage system is completely discharged at the moment, the photovoltaic system is controlled to output mppt power, the diesel generator system operates, the photovoltaic system and the diesel generator system jointly supply power for the load,namely, the case (3) hereinafter.
If the mppt power output by the photovoltaic system is between Pload-num×Pd_rated×ηmaxAnd Pload-num×Pd_rated×ηminAnd in the meantime, the energy storage system is controlled not to be charged or discharged, the photovoltaic system outputs mppt power, the diesel generator system operates, and the photovoltaic system and the diesel generator system jointly supply power for the load.
Based on the above description, in practical application, the specific process of adjusting the output power of the photovoltaic system and the output power of the energy storage system in the light-storage diesel microgrid system in real time is as follows:
(1) if Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC > SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be as follows: ppcs＝0，Ppv＝Pload-num×ηmin。
(2) If Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC < SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be as follows: ppcs＝Ppv-(Pload-num×Pd_rated×ηmin)，Ppv＝Ppv_mppt。
(3) If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC < SOCminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be as follows: ppcs＝0，Ppv＝Ppv_mppt。
(4) If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC > SOCminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be as follows: ppcs＝-(Pload-num×Pd_rated×ηmax)，Ppv＝Ppv_mppt。
(5) If Pload-num×Pd_rated×ηmax＜Ppv_mppt＜Pload-num×Pd_rated×ηminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be as follows: ppcs＝0，Ppv＝Ppv_mppt。
Wherein, Ppv_mpptMppt power, P, for photovoltaic systemsloadFor the current load power, Pd_ratedis rated power of the diesel generator, num is the number of the current diesel generators, ηminminimum operating efficiency, η, of the optimum operating efficiency intervalmaxThe maximum operation efficiency in the optimal operation efficiency interval is the current SOC of the energy storage system, and the SOC is the current SOC of the energy storage systemmaxIs the maximum electric quantity limit value, SOC, of the energy storage systemminIs the minimum electric quantity limit value, P, of the energy storage systempcsIs the output power of the energy storage system, PpvIs the output power of the photovoltaic system.
S405, adjusting the number of the diesel generators in real time according to the output power of the photovoltaic system and the output power of the energy storage system, so that each operating diesel generator works in an optimal operating efficiency interval.
In practical application, the number of the diesel generators can be adjusted in real time by combining with the specific adjustment manner in the embodiment corresponding to fig. 4.
Specifically, it is first ensured that the number of operating diesel generators is always adjusted between the maximum number of operating diesel generators and the minimum number of operating diesel generators; then according to a formula when the photovoltaic power generation capacity is increased
Figure BDA0002396991350000131
Calculating to obtain the number of running diesel generators needing to be cut off in the diesel generator system; or when the generated energy of the light storage system is reduced, the number of the diesel generators needing to be increased is obtained by adopting reverse calculation; and then the corresponding number of diesel generators is controlled to be cut off or put into operation so as to achieve the purpose of adjusting the number of the diesel generators in real time.
In the embodiment, the output power of the photovoltaic system and the output power of the energy storage system in the light-storage diesel micro-grid system are adjusted in real time, so that the light rejection rate of the photovoltaic system is reduced to the maximum extent, and the overall power generation benefit of the system is improved; moreover, the power optimization and adjustment mode provided by the implementation can reduce the use of the energy storage system, and further reduce the discharge loss and the service life loss of the energy storage system; the method for adjusting the number of the diesel generators in real time to enable the diesel generators to work in the optimal operation efficiency interval can ensure that the diesel generators work in the optimal oil consumption interval, further reduce the fuel consumption of a diesel generator system and reduce the power generation cost of the system.
In practical application, when it is determined that the light-emitting system of the light-storage diesel-electric micro-grid system meets the cut-out condition, that is, when the current SOC of the energy storage system is reduced to the preset cut-out SOC, please refer to fig. 7, step S105, controlling the light-storage system to be cut out, so that the diesel generator system independently operates to supply power in the optimal operating efficiency interval, and the specific process of meeting the load power demand of the light-storage diesel-electric micro-grid system is as follows:
s601, calculating the number of the diesel generators which need to operate in the diesel generator system.
It should be noted that, the manner of calculating the number of the diesel generators that need to operate in the diesel generator system may refer to the related description above, and details are not described here, and all of them belong to the protection scope of the present application.
And S602, controlling the diesel generators with corresponding numbers to be put into operation.
And S603, switching out the light storage system, so that the diesel generator system independently operates to supply power in the optimal operation efficiency interval, and the load power consumption requirement of the light storage diesel micro-grid system is met.
The number of the diesel generators needing to operate in the diesel generator system is obtained through calculation, the diesel generators with the corresponding number are controlled to be put into operation, and then the mode of switching out the optical storage system is controlled, so that the diesel generator system independently operates and supplies power in the optimal operation efficiency interval, the load power consumption requirement of the optical storage diesel microgrid system is met, and the stable and reliable operation of the system can be guaranteed.
It is worth to be noted that, in the prior art, there is also a light diesel storage system, and the control method thereof firstly judges whether the first diesel generator is in the running state according to the running information of the light diesel storage system; if the first diesel generator is in the running state, judging whether the active power of the first diesel generator is larger than a preset first threshold value; if the active power of the first diesel generator is larger than a preset first threshold value, the active power of the diesel generator is reduced, or the currently running generator is switched from the first diesel generator to a second diesel generator, wherein the capacity of the second diesel generator is larger than that of the first diesel generator. Although the control method can avoid overload or reverse power of the diesel generator, ensure stable operation of the light diesel storage system and improve stability and reliability of the light diesel storage system, the existing control method does not consider the economic operation interval of the diesel generator in the diesel generator system, and the control method of the light diesel storage micro-grid system provided by the application ensures that the diesel generator works in the optimal operation efficiency interval by adjusting the number of the diesel generators in real time, reduces oil consumption of the diesel generator system and fully considers the economic operation interval of the diesel generator.
Moreover, when the illumination or the SOC of the energy storage system changes, the reliable switching-in and switching-out control processing of the light storage system is not considered in the conventional control method, but the control method of the light storage diesel micro-grid system provided by the application takes the self condition of the light storage system as a switching standard, and can control the switching-in of the light storage system after the light storage system meets the switching-in condition; after the optical storage system meets the cut-out condition, the cut-out of the optical storage system is controlled, a reliable input and cut-out processing mode of the optical storage system is provided, and frequent cut-in and cut-out of the energy storage system are avoided.
Finally, when the light storage system is put into operation, the existing control method does not relate to how to control the number of running diesel generators to ensure stable operation and economic operation of the system, and the control method of the light storage diesel micro-grid system provided by the application can adjust the number of running diesel generators in real time to ensure stable operation of the system; the number of the running diesel generators is adjusted to change between the maximum number of the running diesel generators and the minimum number of the running diesel generators in real time, so that the diesel generators can work in an optimal oil consumption range, the fuel consumption of a diesel generator system is reduced, the power generation cost of the system is reduced, and the economic running of the system is ensured.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (11)

1. The control method of the optical storage diesel microgrid system is characterized by being applied to a central controller of the optical storage diesel microgrid system and comprising the following steps:
controlling a diesel generator system of the light storage diesel micro-grid system to independently operate and supply power in an optimal operation efficiency interval, and meeting the load power consumption requirement of the light storage diesel micro-grid system;
judging whether an optical storage system of the optical storage diesel micro-grid system meets a cut-in condition or not;
if the light storage system of the light storage diesel micro-grid system meets the cut-in condition, controlling the cut-in of the light storage system, so that the diesel generator system and the light storage system jointly run to supply power in the optimal running efficiency range and jointly meet the load power utilization requirement of the light storage diesel micro-grid system;
judging whether an optical storage system of the optical storage diesel micro-grid system meets a switching-out condition or not;
if the light-out system of the light storage diesel micro-grid system meets the cut-out condition, the light storage system is controlled to be cut out, so that the diesel generator system is in independent operation power supply in the optimal operation efficiency interval and meets the load power utilization requirement of the light storage diesel micro-grid system.
2. The method for controlling the light-storing diesel microgrid system according to claim 1, wherein the switching-in conditions are as follows: the current SOC of an energy storage system in the optical storage system is increased to a preset cut-in SOC;
the cutting conditions were: the current SOC is reduced to a preset cut-out SOC.
3. The method for controlling the light-storing diesel microgrid system according to claim 2, wherein the method for controlling the diesel generator system of the light-storing diesel microgrid system to independently operate and supply power in an optimal operation efficiency interval, and meet the load power demand of the light-storing diesel microgrid system further comprises:
judging whether the current illumination meets the power generation condition of a photovoltaic system in the light storage system;
and if the current illumination meets the power generation condition of the photovoltaic system, controlling the photovoltaic system to generate power, and fully charging the energy storage system with the generated energy of the photovoltaic system until the current SOC of the energy storage system is greater than the preset cut-in SOC.
4. The method for controlling the light-storing diesel microgrid system according to claim 1, wherein a diesel generator system controlling the light-storing diesel microgrid system independently operates to supply power in an optimal operating efficiency interval and meet a load power demand of the light-storing diesel microgrid system, and the method comprises the following steps:
determining the optimal operation efficiency interval;
calculating to obtain the maximum operation number and the minimum operation number of the diesel generators under the current load condition according to the optimal operation efficiency interval and the current load power;
and adjusting the number of the diesel generators according to the relationship between the current number of the diesel generators and the maximum number and the minimum number of the diesel generators to change the number of the diesel generators between the maximum number and the minimum number.
5. The method of claim 4, wherein the determining the optimal operating efficiency interval comprises:
according to the formula
Figure FDA0002396991340000021
Calculating to obtain all load rates of the diesel generator under different real-time powers;
according to the oil consumption curve of the diesel generator, determining the load factor of which the oil consumption is less than or equal to a preset value in all the load factors as the optimal operation efficiency interval;
wherein η is the load factor of the diesel generator, PdIs the real-time power, P, of the diesel generatord_ratedThe rated power of the diesel generator.
6. The method for controlling the light-storage diesel microgrid system according to claim 4, wherein the maximum number of operating machines and the minimum number of operating machines of the diesel generator under the current load condition are obtained by calculating according to the optimal operating efficiency interval and the current load power, and the calculation formula is as follows:
Figure FDA0002396991340000022
wherein, nummaxNum is the maximum number of running diesel generatorsminThe minimum number of the diesel generators is defined, ceil is the calculation result rounded up, PloadFor the current load power, Pd_ratedis the rated power, eta, of the diesel generatorminminimum operating efficiency, η, of said optimum operating efficiency intervalmaxMaximum operation of the optimum operation efficiency intervalThe line efficiency.
7. The method for controlling the light-storing diesel microgrid system according to claim 4, wherein the adjusting the number of the operating machines of the diesel generators according to the relationship between the current number of the operating machines of the diesel generators and the maximum number and the minimum number of the operating machines of the diesel generators to change the number of the operating machines of the diesel generators between the maximum number and the minimum number comprises:
if num > nummaxAdjusting the number of the diesel generators to nummax；
If num > numminAdjusting the number of the diesel generators to nummin；
If nummin＜num＜nummaxIf so, not adjusting the number of the diesel generators;
wherein num is the number of the current diesel generators, nummaxNum is the maximum number of running diesel generatorsminThe minimum number of the diesel generators.
8. The method for controlling the optical storage diesel-microgrid system according to any one of claims 1 to 7, wherein the switching-in of the optical storage system is controlled so that the diesel generator system and the optical storage system jointly operate to supply power in the optimal operation efficiency interval and jointly meet the load power demand of the optical storage diesel microgrid system, and the method comprises the following steps:
controlling the optical storage system to switch in;
according to the formula
Figure FDA0002396991340000031
Calculating to obtain the number of running diesel generators needing to be cut in the diesel generator system; wherein, numreplFor the number of running diesel generators to be cut off, floor is the calculation result rounded down, Pess_ratedIs the rated power, P, of the energy storage systemd_ratedIs a stand forrated power, eta, of the diesel generatormaxThe maximum operation efficiency of the optimal operation efficiency interval is obtained;
cutting off a corresponding number of diesel generators in the diesel generator system;
adjusting the output power of a photovoltaic system and the output power of an energy storage system in the light-storage diesel micro-grid system in real time;
and adjusting the number of the diesel generators in real time according to the output power of the photovoltaic system and the output power of the energy storage system, so that the diesel generators in each operation work in the optimal operation efficiency interval.
9. The method for controlling the optical storage diesel microgrid system according to claim 8, wherein the adjusting the output power of a photovoltaic system and the output power of an energy storage system in the optical storage diesel microgrid system in real time comprises:
if Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC > SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Pload-num×ηmin；
If Ppv_mppt＞Pload-num×Pd_rated×ηminAnd SOC < SOCmaxAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝Ppv-(Pload-num×Pd_rated×ηmin)，Ppv＝Ppv_mppt；
If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC < SOCminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Ppv_mppt；
If Ppv_mppt＜Pload-num×Pd_rated×ηmaxAnd SOC > SOCminThen the output of the energy storage system is usedThe power and the output power of the photovoltaic system are adjusted to: ppcs＝-(Pload-num×Pd_rated×ηmax)，Ppv＝Ppv_mppt；
If Pload-num×Pd_rated×ηmax＜Ppv_mppt＜Pload-num×Pd_rated×ηminAnd then adjusting the output power of the energy storage system and the output power of the photovoltaic system to be: ppcs＝0，Ppv＝Ppv_mppt；
Wherein, Ppv_mpptMppt power, P, for the photovoltaic systemloadFor the current load power, Pd_ratedis rated power of the diesel generator, num is the number of the current diesel generators, ηminminimum operating efficiency, η, of the optimum operating efficiency intervalmaxThe maximum operation efficiency in the optimal operation efficiency interval is the current SOC of the energy storage system, and the SOC is the current SOC of the energy storage systemmaxIs the maximum electric quantity limit value, SOC, of the energy storage systemminIs the minimum electric quantity limit value, P, of the energy storage systempcsIs the output power of the energy storage system, PpvIs the output power of the photovoltaic system.
10. The method for controlling the optical storage diesel-microgrid system according to any one of claims 1 to 7, wherein the controlling of switching out the optical storage system to enable the diesel generator system to independently operate and supply power in the optimal operation efficiency interval and meet the load power demand of the optical storage diesel microgrid system comprises:
and calculating to obtain the number of diesel generators needing to operate in the diesel generator system, controlling the diesel generators with corresponding number to be put into operation, and controlling the light storage system to be switched out, so that the diesel generator system independently operates to supply power in the optimal operation efficiency range, and the load power consumption requirement of the light storage diesel micro-grid system is met.
11. The utility model provides a firewood microgrid system is stored up to light which characterized in that includes: a central controller, at least one light storage system and at least one diesel generator system;
wherein the light storage system comprises at least one photovoltaic system and at least one energy storage system; the diesel generator system comprises at least two diesel generators;
the output end of the photovoltaic system, the input and output end of the energy storage system and the output end of the diesel generator are connected with an alternating current bus of the light storage diesel micro-grid system;
the control end of the photovoltaic system, the control end of the energy storage system and the control end of the diesel generator system are all in communication connection with the central controller, and the central controller is used for executing the control method according to any one of claims 1 to 10.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111740446A (en) * 2020-06-30 2020-10-02 合肥阳光新能源科技有限公司 Operation control method of photovoltaic power generation system and photovoltaic power generation system
CN112234637A (en) * 2020-09-01 2021-01-15 北京双登慧峰聚能科技有限公司 Light-diesel-storage hybrid power supply system for off-grid communication base station and control method
CN112467804A (en) * 2020-12-03 2021-03-09 合肥阳光新能源科技有限公司 Two-stage cooperative control method and system for light storage diesel micro-grid group
CN117154800A (en) * 2023-10-31 2023-12-01 深圳市德兰明海新能源股份有限公司 Control method of energy storage system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102157978A (en) * 2011-04-14 2011-08-17 天津大学 Wind-solar-diesel storage isolated microgrid system and control method thereof
CN102496965A (en) * 2011-11-28 2012-06-13 天津天大求实电力新技术股份有限公司 Island-grid-based method for power supply of diesel generator and energy storage coordination control of battery
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
CN109149567A (en) * 2018-09-10 2019-01-04 华南理工大学 The Multiple Time Scales control method for coordinating of self micro-capacitance sensor containing hybrid energy-storing
CN110011319A (en) * 2019-03-29 2019-07-12 广州航海学院 Without the frequency duty control method and system for sewing up bank electricity
CN110224447A (en) * 2019-07-09 2019-09-10 上海阜有海洋科技有限公司 A kind of Ship Power Station is based on generator load rate-diesel engine thermal efficiency coordinated control system
CN209497278U (en) * 2019-04-24 2019-10-15 深圳市聚能优电科技有限公司 A kind of energy-storage system improving Efficiency of Diesel Engine
CN110401185A (en) * 2019-06-28 2019-11-01 特变电工西安电气科技有限公司 A kind of collaboration energy management system control method based on the storage of source lotus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102157978A (en) * 2011-04-14 2011-08-17 天津大学 Wind-solar-diesel storage isolated microgrid system and control method thereof
CN102496965A (en) * 2011-11-28 2012-06-13 天津天大求实电力新技术股份有限公司 Island-grid-based method for power supply of diesel generator and energy storage coordination control of battery
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
CN109149567A (en) * 2018-09-10 2019-01-04 华南理工大学 The Multiple Time Scales control method for coordinating of self micro-capacitance sensor containing hybrid energy-storing
CN110011319A (en) * 2019-03-29 2019-07-12 广州航海学院 Without the frequency duty control method and system for sewing up bank electricity
CN209497278U (en) * 2019-04-24 2019-10-15 深圳市聚能优电科技有限公司 A kind of energy-storage system improving Efficiency of Diesel Engine
CN110401185A (en) * 2019-06-28 2019-11-01 特变电工西安电气科技有限公司 A kind of collaboration energy management system control method based on the storage of source lotus
CN110224447A (en) * 2019-07-09 2019-09-10 上海阜有海洋科技有限公司 A kind of Ship Power Station is based on generator load rate-diesel engine thermal efficiency coordinated control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
倪榕生: "采用无功补偿提高中小功率柴油发电机的性能指标", 《贵州大学学报（自然科学版）》 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111740446A (en) * 2020-06-30 2020-10-02 合肥阳光新能源科技有限公司 Operation control method of photovoltaic power generation system and photovoltaic power generation system
CN112234637A (en) * 2020-09-01 2021-01-15 北京双登慧峰聚能科技有限公司 Light-diesel-storage hybrid power supply system for off-grid communication base station and control method
CN112467804A (en) * 2020-12-03 2021-03-09 合肥阳光新能源科技有限公司 Two-stage cooperative control method and system for light storage diesel micro-grid group
CN112467804B (en) * 2020-12-03 2023-05-30 阳光新能源开发股份有限公司 Two-stage cooperative control method and system for optical firewood storage micro-grid group
CN117154800A (en) * 2023-10-31 2023-12-01 深圳市德兰明海新能源股份有限公司 Control method of energy storage system
CN117154800B (en) * 2023-10-31 2024-02-02 深圳市德兰明海新能源股份有限公司 Control method of energy storage system

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