CN102623991B - Microgrid energy management system and method - Google Patents
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Abstract
The invention discloses a microgrid energy management system and aims to provide a microgrid energy management system capable of sufficiently utilizing an intelligent heating adjustable load or an intelligent refrigerating adjustable load in a microgrid to reduce the construction cost of the microgrid. The microgrid energy management system comprises the microgrid and a microgrid control center, wherein the intelligent heating adjustable load or the intelligent refrigerating adjustable load is arranged in the microgrid; and the microgrid control center is connected with the intelligent heating adjustable load or the intelligent refrigerating adjustable load and is used for controlling the intelligent heating adjustable load to heat or controlling the intelligent refrigerating adjustable load to refrigerate according to the real-time condition of the microgrid and the user actual setting of heating or refrigerating equipment when the generated energy of the microgrid is excessive and an energy storage device cannot meet the energy storage requirement. The invention also discloses a microgrid energy management method. The microgrid energy management system and the microgrid energy management method can be used for the microgrid.
Description
Technical field
The present invention relates to microgrid, especially relate to a kind of microgrid EMS and method.
Background technology
Microgrid also claims micro-electrical network, is the important component part of intelligent grid.In prior art, microgrid can coordinate the stable independently off-grid operation of energy-storage units, realizes the Optimized Operation of energy and the economical operation of network between each distributed power generation unit and load, energy-storage units.Compared with traditional large capacity thermal power generation, in microgrid, there is the fluctuation problem of distributed energy.In order to realize preferably the stable operation of microgrid, want to meet load to the requirement of power capacity except the energy storage as uninterrupted power supply, also need certain stored energy capacitance to meet Load Regulation.
At present, batteries to store energy technology is the most ripe, business the widest universal energy storage technology, and the application in microgrid is also extensive, as Dutch Continuon microgrid, Greece NTUA microgrid, Japanese Wakkanai microgrid etc. is all the principal and subordinate's control model micro-grid systems taking accumulator plant as main control unit.
Present stage is because energy storage device is expensive and maintenance cost is high, if the design of energy storage device had both met the energy storage requirement of uninterrupted power supply, meet again Load Regulation requirement, certainly will in microgrid, a large amount of energy storage devices will be adopted so, this will make micro-grid system construction cost too high, cost of electricity-generating does not have advantage yet, thereby has hindered the development of microgrid.
Achievement in research about microgrid is very abundant, as: HeFei University of Technology's doctorate paper " the operation optimization of micro-grid system and energy management research " of delivering in April, 2011.This article is pointed out: in micro-grid system, distributed energy storage unit can be used for stabilizing load fluctuation, carries out peak load shifting; Match with the renewable energy power generation such as wind power generation, photovoltaic generation technology, with the power stage of systems stabilisation, strengthen the schedulability energy of renewable energy system; Ensure the quality of power supply, improve user's side reliability; The assistant service functions such as frequency adjustment, transient response are for subsequent use, spinning reserve are provided; Can, by participating in electricity market, utilize time-of-use tariffs difference to make energy-storage system owner obtain certain economic well-being of workers and staff; Meanwhile can improve electrical network power transmission and distribution ability, delay electrical network upgrading enlarging, reduce electric grid investment cost etc.
This article is pointed out simultaneously: the large scale application of the renewable energy power generations such as wind power generation, photovoltaic generation is faced with intermittence and this basic fundamental difficult point of unpredictability of energy supply.Energy storage technology, for processing this problem, will be brought into play important or even critical effect: can stabilize the random short-term fluctuation (every minute and second level) of renewable energy power generation unit, the power stage curve of level and smooth renewable energy power generation unit, systems stabilisation frequency; Can stabilize the Long-term Fluctuation (hour level) of renewable energy power generation unit, so that become can scheduling type generator unit in renewable energy power generation unit, increase the stability of its power stage; Can alleviate the impact that the prediction deviation of renewable energy power generation brings, according to the prediction case of renewable energy power generation, energy storage coordinates auxiliary output, can improve the reliability of unit output, especially even more important under the situation that participates in electricity market.
Can learn from this article, energy storage technology is most important in the stable operation of microgrid.If but the high performance micro-grid system of pursuit simply need to arrange a large amount of energy storage devices in micro-grid system.And present stage, because energy storage device is expensive, a large amount of energy storage devices will certainly reduce the cost performance of microgrid generating.
And for example Huabei Electricl Power Univ.'s master thesis " Study on economical operation of microgrid ", known according to Fig. 2-2 in this paper and paper, is input to energy terminal use from fuel, and in microgrid, main energy flow has electrical energy flows and heat energy stream.Energy terminal use is divided into four classes: electric load is as illuminating lamp; Be exactly to utilize waste heat to meet the compressor cooling needs of any standard for refrigeration duty; Hot water and space heating load are exactly utilize cogeneration machine or directly satisfy the demand with natural gas.In microgrid, heat load is to be met by micro-power supply of cogeneration, and the heat that they produce is except having a small amount of used heat, and remaining is by after heat exchanger, and a part is used for meeting heat load demand, and another part is stored in thermal storage.The heat energy storing discharges for user in the time that heat load increases, and has during this time a certain proportion of thermal losses and falls.Hot water in this article and space heating load are to utilize cogeneration machine or natural gas to meet the demands, and this article has only provided the source of hot water and space heating load.
And for example publish in " electric power network technique " the 33rd the 20th phase of volume in 2009 " based on the microgrid economic operation analysis containing plurality of energy supplies system of particle swarm optimization algorithm ".This article provides energy flow main in microgrid electrical energy flows, heat energy stream and natural gas flow, and it flows to as to be input to energy terminal use from fuel.Energy terminal use is divided into electric load, confession refrigeration duty, hot water and space heating load, natural gas load 5 classes.But this article does not provide specific definition, source and the using method of hot water and space heating load.
For another example HeFei University of Technology's master thesis of Gao Yan " research of the distributed generation system graphic platform based on CIM ".This article provides micro-electrical network and large electrical network carries out energy exchange by PCC, and both sides are for subsequent use each other, thereby has improved the reliability of power supply.Figure 6 shows that the micro-grid system being formed by miniature gas turbine, wind power generation, photovoltaic generation, biomass power generation, fuel cell and energy storage device, wherein the micro-power supply of part is connected near heat load, can be local user's heat supply, thereby improve the utilization ratio of the energy.Heat load heat in this article derive from fuel cell.
For another example the Chinese invention patent that publication number is CN101789608A again, a kind of isolated power grid multi-unit parallel load distribution control system of this disclosure of the invention, it comprises Load Distribution System and DEH system, and the controller of described DEH system is built-in with the special control program of DEH; Status signal in steam turbine operation process and parameter, and status signal, the operational factor of Dcs system, electrical system and boiler FSSS system are received by Load Distribution System with aspect, after the judgement of sharing of load program, processing, control signal is sent to each DEH system, by built-in DEH control logic, unit load is distributed; This invention realizes many units of island network parallel sharing of load, transfer, can show each operating states of the units, select suitable operational mode according to the operational factor of unit, free setting sharing of load ratio, realize the planned scheduling of the frequency control system after set grid-connection or load control mode and load, ensure each Steam Turbine safety, reliability service simultaneously.This invention is mainly for isolated power grid multi-unit parallel load distribution control system, and wherein boiler FSSS system is the equipment that generator operation uses, not heat load.
For another example University Of Tianjin's master thesis " research of microgrid pilot system " again, the load providing in this article in microgrid comprises three parts: local actual single-phase illumination and three-phase air conditioner load (17.6kW altogether), the motor of dynamic model experiment chamber and resistive load are the tunable capacitor-resistance-inductance load cabinet that ensures that microgrid power-balance configures.Wherein, dynamic model experiment chamber load can pass through tunable load cabinet and regulate the size of load, and by the control to switch Q1 to Q9, realizes the research of any distributed power source separately and dynamic model experiment chamber load group net operation.
Known in sum, in present stage microgrid to the supply source of heat load the waste heat from system generating, user's Intelligent heating deferrable load is not carried out to detailed utilization and control.In order to ensure the power-balance of microgrid, in document, also there is employing tunable capacitor-resistance-inductance load cabinet, this kind of mode for regulating power by too much energy dissipation at tunable capacitor-resistance-inductance load cabinet, do not make full use of the Intelligent heating deferrable load of user side.
Summary of the invention
The present invention does not make full use of the technical problem of the Intelligent heating deferrable load of user side in order to solve prior art microgrid, a kind of microgrid EMS and method are provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is a kind of microgrid EMS of design, comprise microgrid, in described microgrid, be provided with Intelligent heating deferrable load or Intelligent refrigeration deferrable load, described microgrid EMS also comprises one with described Intelligent heating deferrable load or Intelligent refrigeration deferrable load is connected and in the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement, heat or control the microgrid control centre of described Intelligent refrigeration deferrable load refrigeration according to Intelligent heating deferrable load described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load by the real-time situation of microgrid.
Described Intelligent heating deferrable load or Intelligent refrigeration deferrable load comprise that one supplies user to set the authorization module of authorization message; Described microgrid control centre comprises and obtains the authorization message that user sets Intelligent heating deferrable load or Intelligent refrigeration deferrable load, and according to Intelligent heating deferrable load heating described in described authorization message control or control the mandate acquisition module of Intelligent refrigeration deferrable load refrigeration.
Described authorization message comprise time range, water temperature, the water yield, water temperature allowed band, the heating of control authority, subscriber authorisation maximum power, be heated to a certain temperature required time.
Described Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine, and described Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer and air-conditioning.
The present invention also provides a kind of microgrid energy management method, is included in microgrid Intelligent heating deferrable load or Intelligent refrigeration deferrable load are set, and described microgrid energy management method also comprises the following steps:
Whether the energy output that obtains microgrid is superfluous;
In the time that energy output is superfluous, detects energy storage device and whether meet energy storage requirement;
If cannot meet energy storage requirement time, heat according to Intelligent heating deferrable load described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load by the real-time situation of microgrid and freeze.
Described microgrid energy management method also comprises that user sets authorization message to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.
Described authorization message comprise control authority, subscriber authorisation time range, water temperature, the water yield, water temperature allowed band, heating maximum power or be heated to a certain temperature required time.
Described Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine, and described Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer and air-conditioning.
Described microgrid energy management method also comprises in the time that microgrid is incorporated into the power networks, if microgrid energy output can not meet burden requirement, controls microgrid and buys civil power to large electrical network.
Described microgrid energy management method also comprises in the time that microgrid is incorporated into the power networks, if microgrid energy output surplus, sell electricity price lattice when higher, control microgrid and sell electricity to large electrical network, sell electricity price lattice when lower, energy priority is stored in energy storage device, if energy storage device storage is full, controls microgrid and sell electricity to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.
The present invention is by arranging microgrid control centre, in the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement, according to Intelligent heating deferrable load heating described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load refrigeration, superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load by the real-time situation of microgrid.Take full advantage of Intelligent heating deferrable load or Intelligent refrigeration deferrable load, thereby can reduce the capacity of system stored energy device, reduce cost and the maintenance cost of energy storage device, effectively reduced the waste of the energy.The present invention can save microgrid construction cost, makes the authorized user in microgrid low electricity price obtain electric energy by optimal control, improves the cost performance of microgrid generating.
Brief description of the drawings
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail, wherein:
Fig. 1 is the schematic diagram of microgrid EMS of the present invention;
Fig. 2 is the structure principle chart of microgrid of the present invention;
Fig. 3 is microgrid in Fig. 2 and the catenation principle figure of microgrid control centre;
Fig. 4 is a specific embodiment structure chart of microgrid EMS of the present invention;
Fig. 5 is the flow chart of microgrid energy management method of the present invention;
Fig. 6 is prior art micro-grid system structure chart.
Embodiment
Refer to Fig. 1.Microgrid EMS of the present invention comprises microgrid and the microgrid control centre being connected with microgrid.Wherein:
In microgrid, be provided with Intelligent heating deferrable load or Intelligent refrigeration deferrable load, controlled capacitance inductance control cubicle and energy storage device.Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine etc.Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer, air-conditioning etc.On Intelligent heating deferrable load or Intelligent refrigeration deferrable load, be provided with the authorization module of setting authorization message for user, user can set the authorization message of Intelligent heating deferrable load or Intelligent refrigeration deferrable load by authorization module, as the authority of Intelligent heating deferrable load or Intelligent refrigeration deferrable load is set and licenses the time etc., authorize the operation of microgrid control centre to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.In design when microgrid, in order to reducing the construction costs, the capacity of energy storing device of design need meet the basic demand of sensitive load.
Microgrid control centre and Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle are connected and can control Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle.Microgrid control centre is mainly used in the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement, by the real-time situation of microgrid according to Intelligent heating deferrable load heating described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load refrigeration, thereby superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load.Microgrid control centre carries out communication by communication line and Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle, controls the power-balance of microgrid.
In order to meet user's demand in realizing control, microgrid control centre comprises a mandate acquisition module, the authorization message that it is set Intelligent heating deferrable load or Intelligent refrigeration deferrable load for obtaining user, and according to Intelligent heating deferrable load heating described in described authorization message control or control described Intelligent refrigeration deferrable load refrigeration.Authorization message comprise time range, water temperature, the water yield, water temperature allowed band, the heating of control authority, subscriber authorisation maximum power, be heated to a certain temperature required time etc.
Taking intelligent ice machine as example, user arranges the intelligent ice machine of oneself, such as can ice making time interval, the electricity charge of ice making are not more than quantity of how many, ice making etc., when microgrid produces superfluous electric weight, and can provide energy to intelligent ice machine time, microgrid can be sold ice making user by electric energy according to user's definition, when not meeting the condition of user's setting, stops providing electric power to ice making user.
In the time that energy output is greater than load, coordinate energy storage device, microgrid control centre controls Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle and carries out Load Regulation.In the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement (as full in stored up), by the real-time situation of microgrid according to Intelligent heating deferrable load heating described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load refrigeration, thereby superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load.Thereby take full advantage of Intelligent heating deferrable load or Intelligent refrigeration deferrable load, can reduce the capacity of system stored energy device, reduce cost and the maintenance cost of energy storage device, effectively reduced the waste of the energy.The present invention can save microgrid construction cost, makes the authorized user in microgrid low electricity price obtain electric energy by optimal control, improves the cost performance of microgrid generating.Meanwhile, microgrid control centre can also control quadergy by controlling controlled capacitance inductance control cubicle.
Please also refer to Fig. 2 and Fig. 3.In microgrid, be provided with distributed power source, energy storage device, sensitive load and non-sensitive load, microgrid is connected with large electrical network by a switch.Distributed power source is connected in common feeder by inverter and switch, and energy storage device is connected in common feeder by Power Conditioning Unit and switch, and sensitive load and non-sensitive load are all connected in common feeder by switch, can control separately to realize.Non-sensitive load comprises Intelligent heating deferrable load or Intelligent refrigeration deferrable load, controlled capacitance inductance control cubicle and other non-sensitive loads.Microgrid control centre is connected with the switch of inverter, Power Conditioning Unit, Intelligent heating deferrable load or Intelligent refrigeration deferrable load, controlled capacitance inductance control cubicle and the control that is useful on.
In the time that microgrid departs from large electrical network independent operating, if energy output can not meet burden requirement, can progressively cut off non-sensitive load, finally can only retain sensitive load.
In the time that microgrid departs from large electrical network independent operating, if energy output is greater than burden requirement, while being energy output surplus, coordinate energy storage device, and control Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle, will gain merit energy storage in energy storage device and Intelligent heating deferrable load or Intelligent refrigeration deferrable load.After energy storage device storage is full, system will be gained merit in energy storage Intelligent heating deferrable load or Intelligent refrigeration deferrable load, if after energy storage device and Intelligent heating deferrable load or Intelligent refrigeration deferrable load all store up completely, cut-off parts distributed power source makes power reach balance.
In the time that microgrid is incorporated into the power networks, if microgrid energy output can not meet burden requirement, also can buy civil power to large electrical network by microgrid control centre.
In the time that microgrid is incorporated into the power networks, if microgrid energy output is greater than burden requirement, it is energy output surplus, now, when selling electricity price lattice when higher, can sell electricity to large electrical network by the control of microgrid control centre, and when selling electricity price lattice when lower, energy priority is stored in energy storage device, if energy storage device storage is full, can read Intelligent heating deferrable load or Intelligent refrigeration deferrable load user profile and relevant setting, controlling microgrid sells electricity with lower price and superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.
Please also refer to Fig. 4.In this specific embodiment, distributed power source comprises photovoltaic generation 11, wind power generation 12, internal combustion engine generating 13, natural gas power 14 etc.Sensitive load comprises microgrid control system 21, the network equipment 22 etc.Non-sensitive load comprises independent domestic consumer 31, Intelligent heating deferrable load and controlled capacitance inductance control cubicle 33.Intelligent heating deferrable load comprises water heater 321, electric boiler 322 and water dispenser 323 etc.Intelligent electric meter 4 has the effect of metering and control relay switch.Microgrid control centre 5 collects and gathers the information that on each nodes, intelligent electric meter provides, and is mainly used in: the fuel of controlling distributed power source generating equipment and generating is as diesel gas etc.; Control Intelligent heating deferrable load and the controlled capacitance inductance control cubicles such as water heater, electric boiler and water dispenser; Control discharging and recharging of energy-storage battery 6.
Refer to Fig. 5.Microgrid energy management method of the present invention comprises the following steps:
The first step, Intelligent heating deferrable load or Intelligent refrigeration deferrable load are set in microgrid.
Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine etc.Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer and air-conditioning etc.
Whether second step, the energy output that obtains microgrid be superfluous.
In the time that microgrid departs from large electrical network independent operating, if energy output can not meet burden requirement, can progressively cut off non-sensitive load, finally can only retain sensitive load.
In the time that microgrid is incorporated into the power networks, if microgrid energy output can not meet burden requirement, controls microgrid and buy civil power to large electrical network.
The 3rd step, in the time that energy output is superfluous, detect energy storage device and whether meet energy storage requirement.
If when the 4th step cannot meet energy storage requirement, heat according to Intelligent heating deferrable load described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load by the real-time situation of microgrid and freeze.
In this process, superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load.
Described microgrid energy management method also comprises that user sets authorization message to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.Described authorization message comprise control authority, subscriber authorisation time range, water temperature, the water yield, water temperature allowed band, heating maximum power or be heated to a certain temperature required time.
In the time that microgrid departs from large electrical network independent operating, if energy output is greater than burden requirement, while being energy output surplus, coordinate energy storage device, and control Intelligent heating deferrable load or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle, will gain merit energy storage in energy storage device and Intelligent heating deferrable load or Intelligent refrigeration deferrable load.After energy storage device storage is full, system will be gained merit in energy storage Intelligent heating deferrable load or Intelligent refrigeration deferrable load, if after energy storage device and Intelligent heating deferrable load or Intelligent refrigeration deferrable load all store up completely, cut-off parts distributed power source makes power reach balance.
In the time that microgrid is incorporated into the power networks, if microgrid energy output is greater than burden requirement, it is energy output surplus, now, when selling electricity price lattice when higher, can sell electricity to large electrical network by the control of microgrid control centre, and when selling electricity price lattice when lower, energy priority is stored in energy storage device, if energy storage device storage is full, can read Intelligent heating deferrable load or Intelligent refrigeration deferrable load user profile and relevant setting, control microgrid and sell electricity to Intelligent heating deferrable load or Intelligent refrigeration deferrable load with lower price, be stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load superfluous energy output is changed into heat energy or cold energy.
The present invention is by arranging microgrid control centre, in the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement, microgrid control centre controls the heating of described Intelligent heating deferrable load or controls described Intelligent refrigeration deferrable load refrigeration, superfluous energy output is changed into heat energy or cold energy is stored in Intelligent heating deferrable load or Intelligent refrigeration deferrable load.Take full advantage of Intelligent heating deferrable load or Intelligent refrigeration deferrable load, thereby can reduce the capacity of system stored energy device, reduce cost and the maintenance cost of energy storage device, effectively reduced the waste of the energy.The present invention can save microgrid construction cost, makes the authorized user in microgrid low electricity price obtain electric energy by optimal control, improves the cost performance of microgrid generating.
The present invention adopts Intelligent heating deferrable load or Intelligent refrigeration deferrable load to carry out the requirement that balanced load regulates, thereby reduces as much as possible the capacity of microgrid energy storage, reduces the cost of the energy storage device of micro-grid system, reduces microgrid construction, maintenance and cost of electricity-generating.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a microgrid EMS, is characterized in that comprising:
Microgrid, is provided with distributed power source in described microgrid, comprises photovoltaic generation, wind power generation, internal combustion engine generating, natural gas power; Energy storage device, sensitive load and non-sensitive load, described non-sensitive load comprises Intelligent heating deferrable load or Intelligent refrigeration deferrable load, controlled capacitance inductance control cubicle, described distributed power source is connected in common feeder by inverter and switch, described energy storage device is connected in common feeder by Power Conditioning Unit and switch, described sensitive load and non-sensitive load are all connected in common feeder by switch, can control separately to realize, described common feeder is connected with large electrical network by a switch;
With microgrid control centre, described microgrid control centre carries out communication by the Intelligent heating deferrable load in communication line and described microgrid or Intelligent refrigeration deferrable load and controlled capacitance inductance control cubicle, control the power-balance of microgrid, the information that on each node, intelligent electric meter provides that gathers is collected by described microgrid control centre, controls the fuel of distributed power source generating equipment and generating; Control the heating of Intelligent heating deferrable load or control Intelligent refrigeration deferrable load refrigeration and controlled capacitance inductance control cubicle; Control discharging and recharging of energy storage device, and in the time that microgrid energy output surplus and energy storage device cannot meet energy storage requirement, by the real-time situation of microgrid according to Intelligent heating deferrable load heating described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load refrigeration;
Described Intelligent heating deferrable load or Intelligent refrigeration deferrable load comprise that one supplies user to set the authorization module of authorization message; Described microgrid control centre comprises and obtains the authorization message that user sets, and according to Intelligent heating deferrable load heating described in described authorization message control or control the mandate acquisition module of Intelligent refrigeration deferrable load refrigeration.
2. microgrid EMS according to claim 1, is characterized in that: described authorization message comprise time range, water temperature, the water yield, water temperature allowed band, the heating of control authority, subscriber authorisation maximum power, be heated to a certain temperature required time.
3. microgrid EMS according to claim 1, it is characterized in that: described Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine, described Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer and air-conditioning.
4. a microgrid energy management method for microgrid EMS described in claim 1, is characterized in that, comprises the following steps:
Whether the energy output that obtains microgrid is superfluous;
In the time that energy output is superfluous, detects energy storage device and whether meet energy storage requirement;
If cannot meet energy storage requirement time, heat according to Intelligent heating deferrable load described in user's actual set control of Intelligent heating deferrable load or Intelligent refrigeration deferrable load or control described Intelligent refrigeration deferrable load by the real-time situation of microgrid and freeze;
Described microgrid energy management method also comprises that user sets authorization message to Intelligent heating deferrable load or Intelligent refrigeration deferrable load, described microgrid control centre obtains the authorization message that user sets, and according to Intelligent heating deferrable load heating described in described authorization message control or control Intelligent refrigeration deferrable load refrigeration.
5. microgrid energy management method according to claim 4, is characterized in that: described authorization message comprise control authority, subscriber authorisation time range, water temperature, the water yield, water temperature allowed band, heating maximum power or be heated to a certain temperature required time.
6. microgrid energy management method according to claim 4, it is characterized in that: described Intelligent heating deferrable load comprises intelligent electric boiler, intelligent water heater or intelligent drinking machine, described Intelligent refrigeration deferrable load comprises ice machine, cooling-water machine, freezer and air-conditioning.
7. microgrid energy management method according to claim 4, is characterized in that: described microgrid energy management method also comprises in the time that microgrid is incorporated into the power networks, if microgrid energy output can not meet burden requirement, controls microgrid and buys civil power to large electrical network.
8. microgrid energy management method according to claim 4, it is characterized in that: described microgrid energy management method also comprises in the time that microgrid is incorporated into the power networks, if microgrid energy output surplus, sell electricity price lattice when higher, control microgrid and sell electricity to large electrical network, sell electricity price lattice when lower, energy priority is stored in energy storage device, if energy storage device storage is full, controls microgrid and sell electricity to Intelligent heating deferrable load or Intelligent refrigeration deferrable load.
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| CN104659795B (en) * | 2015-01-28 | 2017-01-11 | 东北大学 | Microgrid power balance control device and method |
| CN107453407B (en) * | 2017-07-03 | 2020-05-26 | 东华大学 | Intelligent micro-grid distributed energy scheduling method |
| CN107276126A (en) * | 2017-07-21 | 2017-10-20 | 中国华能集团清洁能源技术研究院有限公司 | A kind of electric heating cold air based on fuel cell is provided multiple forms of energy to complement each other energy supplying system and method |
| CN109659927B (en) * | 2018-10-24 | 2022-06-17 | 国网天津市电力公司电力科学研究院 | Energy storage capacity configuration method of comprehensive energy microgrid considering energy storage participation degree |
| CN110138017A (en) * | 2019-06-21 | 2019-08-16 | 四川大通睿恒能源有限公司 | The control system tested for gas electricity generator in cold, heat and power triple supply system |
| CN110768274B (en) * | 2019-11-04 | 2022-03-29 | 南京南瑞继保电气有限公司 | Power control method and device for isolated microgrid |
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