CN105375483B - A kind of source/net/storage/lotus coordinated management system and method for energy Internet service - Google Patents
A kind of source/net/storage/lotus coordinated management system and method for energy Internet service Download PDFInfo
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Abstract
The invention discloses a kind of source/net/storage/lotus coordinated management systems and method for energy Internet service, which includes source/net/storage/lotus intelligent management system and source/net/storage/lotus interconnected communication system；Interconnected communication system realizes the acquisition and monitoring of system metadata using communication network, and provides communication for the control instruction of intelligence control system and support.Intelligence control system is designed as the three-decker of demand layer, state layer and control layer, by the way that the comprehensive coordination control of source/net/storage/lotus is arranged with optimum management, it can be achieved that the targets such as the equilibrium of supply and demand, maintenance power quality, demand side management.The present invention is based on the growth requirements of energy internet, provide a set of high degree of autonomy, the rapid energy management strategies of response for the interconnection of the energy, realize the efficient utilization of distributed generation resource under energy Internet architecture.
Description
Technical field
The present invention relates to energy internet arenas and distributed electrical source domain, and in particular to one kind being applied to energy internet
Source/net/storage/lotus coordinated management system and method.
Background technology
Distributed generation resource, communication and the fast development of control technology bring the research fields such as intelligent grid, active distribution network
Rise, source/net/storage/lotus coordination optimization is a kind of integrated management to distributed generation resource, power grid, energy storage device and load, is contained
Lid electrical energy production, transmission, distribution and each link of consumption, the consumption that can further increase distribution type renewable energy are horizontal and simultaneous
Care for system economy and safety.The energy internet currently risen is the new developing direction of energy system, it is intended to make transverse direction
The energy source interconnection circle of the complementary, longitudinal source/net/storage/lotus coordination and interaction of multiple-energy-source body, farthest utilizes distributed type renewable energy
Energy supply and the interconnection of large-scale energy of localization are realized in source.Source/net/storage/lotus coordination optimization management will realize the energy
One of important technology of internet.
Under the background that energy internet rapidly develops, the importance of source/net/storage/lotus coordination optimization management increasingly improves.
Research both domestic and external concentrates on the region home rule within the scope of micro-capacitance sensor, the optimal coordination of shorter mention and power grid, side at present
The single or Partial coordination control for overweighting distributed generation resource, energy storage device, lacks source/net/storage/lotus is excellent as a tunable
Change the whole research of management, fails to play powerful support to Economic Load Dispatch.Related coordinated management method or level be strong,
Master Control Center data volume is excessive, is not up to the control of energy internet rank requirement, or only does frame suggestion, management structure pine
It dissipates, response speed, degree of flexibility when practical application etc. can all be restricted.
Invention content
To overcome in above-mentioned background technology to distributed generation resource, energy storage device, load and electric system in energy internet
Interconnection and its integrated management deficiency, purpose provided by the invention be to provide a kind of source/net for energy Internet service/
Storage/lotus coordinated management system and method.
To achieve the above object, the present invention uses following technical scheme：
A kind of source/net/storage/lotus coordinated management system for energy Internet service, including source/net/storage/lotus intelligent management
System and source/net/storage/lotus interconnected communication system；
Source/net/storage/lotus the intelligent management system includes demand layer, state layer and control layer, wherein
The demand layer is for receiving setting information, i.e., source/net/storage/lotus that source/net/storage/lotus interconnected communication system collects
Basic data and control targe information, include at least output state of the distributed generation resource under MPPT maximum power point tracking
PDG_M, maximum power P that power distribution network provides or receivesG_S_lim、PG_I_lim, the voltage on line side U that acquires under grid-connected conditions*, battery storage
The minimum of energy default and maximum state-of-charge SOCmin、SOCmax, user mode selection, user agree to receive demand side management
When minimum load demand PL_min；
The state layer for receiving operation information, that is, utilize source that source/net/storage/lotus interconnected communication system acquires in real time/
Net/storage/lotus running state parameter includes at least distributed generation resource actual generation power PDG, the reality of busbar where source/storage/lotus
Measure voltage U, the instant SOC of battery energy storage system and output PS, user's real-time load PL, power grid offer power PG；
The control layer includes central controller, and the information data provided by demand layer, state layer is controlled according to center
The optimum management set in device carries out condition judgment and control；The associated control parameters of control layer include at least distributed generation resource
It contributes and adjustsUser mode switching, energy-storage units charge and discharge switching；The optimization pipe set in the central controller
Reason is：Introduce the power regulation factorThe power partition coefficient K of energy-storage units and power gridD, proportional controller coefficient lambda, table
It is as follows up to formula：
Wherein, U is busbar voltage where source/storage/lotus that state layer measures；λ indicates proportional controller coefficient；P*Indicate total
The power regulation factor, beThe sum of；
Source/net/storage/lotus the interconnected communication system includes dispatch command, requirement command, controllable burden, spatial load forecasting list
Member, power electronic equipment, distributed generation resource, control unit, wherein the dispatch command connects upper layer power grid, and scheduling is referred to
Information is enabled to be transmitted to demand layer and state layer；The requirement command connects controllable burden, and the requirement command of controllable burden is believed
Breath is transmitted to demand layer；The status information of controllable burden is transmitted to state layer, and load control unit receives the information of control layer, and
Transmit information to controllable burden；Power electronic equipment connects distributed generation resource, and transmits information to state layer, control unit
The information of reception state layer and control layer, and transmit a signal to power electronic equipment.
A kind of source/net/storage/lotus for energy Internet service coordinates and manages method, utilizes source/net/storage/lotus interconnected communication
System is that source/net/storage/lotus intelligent management system transmits demand variable, and the control requirement of feedback intelligent management system, specific to wrap
It includes：
Control parameter, the state for collecting source/net/storage/lotus by demand layer such as define at the letter of basic datas and control targe
Breath；
Acquire the running state parameter of source/net/storage/lotus in real time by state layer；
Realize that system power balance, general objective function representation are finally by control layer：
PDG+PS+PG=PL
In formula, PDG, PS, PGDistributed generation resource, the output of energy-storage units and power grid are indicated respectively；PLIndicate user's total load；
When customer charge is contributed more than distributed generation resource, system judges the state of energy-storage system, if SOC is less than setting immediately
Minimum value SOCmin, need to be powered by grid side；Pass through the power grid P being collected into demand layer the last timeG_S_limAnd corresponding electricity
Valence instructs, according to the pre-set routine of user, economic dispatch operational mode with PL_minIt indicates after user receives demand side management
Minimum load demand, i.e. the uncontrollable part of load determines whether user cuts economic model operation.
The control that distributed generation resource preferentially presses MPPT is contributed, when energy-storage units state-of-charge is beyond setting maximum value SOCmax
And the power regulation factorWhen setting the maximum power received more than power grid, control layer can determine to contribute distributed generation resourceIt is set as：
The beneficial effects of the invention are as follows：The present invention by establish measure, control etc. signals communication network, realize source/net/
Real-time information collection between storage/lotus, and carried by data transmission intelligent control system, and for the control instruction of intelligent management system
It is supported for communication.Compared with prior art, the present invention is the coordination optimization management to source/net/storage/lotus, it is contemplated that future source of energy
The mass data of internet, control system is realized using three-decker, can be responded according to communication speed, operational capability and system
It is required that flexibly selection system control targe, control effect also more accurately, have the function of demand side management, distribution is further promoted
The utilization rate of formula power supply.
Description of the drawings
Fig. 1 is source/net/storage/lotus coordinated management system schematic diagram of the present invention；
Fig. 2 is the workflow example of the present invention.
Specific implementation mode
With reference to the accompanying drawings of the specification to a kind of source/net/storage/lotus coordinated management system for energy Internet service and side
Method is described further.
As shown in Figure 1 be the present invention it is a kind of be energy Internet service source/net/storage/lotus coordinated management system, scheme
In, solid line indicates that the interconnection between device, dotted line indicate the communication network of signals such as to measure, control, and utilizes communication network
Network realizes the acquisition and monitoring of system metadata, and establishes information channel between source/storage/lotus, is the control of intelligence control system
System instruction provides communication and supports.Including source/net/storage/lotus intelligent management system and source/net/storage/lotus interconnected communication system；Source/
Net/storage/lotus intelligent management system includes demand layer, state layer and control layer, wherein
Demand layer is for receiving setting information, i.e., source/net/storage that source/net/storage/lotus interconnected communication system collects/lotus control
Parameter, state such as define at the information of basic datas and control targe, include at least distributed generation resource under MPPT maximum power point tracking
Output state PDG_M, maximum power P that power distribution network provides or receivesG_S_lim、PG_I_lim, system reference voltage U*, it is being incorporated to electricity
Under conditions of net, this value comes from the voltage on line side acquisition of demand layer；Network operater or other instruction letters of regulator's publication
Breath can also collect in demand layer；The minimum of battery energy storage system setting and maximum state-of-charge SOCmin、SOCmax, user mode choosing
It selects, minimum load demand P when user agrees to receive demand side managementL_min, battery use can be extended within this range by working
Service life.
State layer for receiving operation information, that is, utilize source/net that source/net/storage/lotus interconnected communication system acquires in real time/
Storage/lotus running state parameter includes at least distributed generation resource actual generation power PDG, the practical measurement of busbar where source/storage/lotus
Voltage U, the instant SOC of battery energy storage system and output PS, user's real-time load PL, power grid offer power PG；
Control layer includes central controller, the information data provided by demand layer, state layer, according in central controller
The optimum management of setting carries out condition judgment and control；The associated control parameters of control layer include at least the output of distributed generation resource
AdjustmentUser mode switching, energy-storage units charge and discharge switching；The optimum management set in the central controller
For：Introduce the power regulation factorThe power partition coefficient K of energy-storage units and power gridD, proportional controller coefficient lambda, table
It is as follows up to formula：
Wherein, U is busbar voltage where source/storage/lotus that state layer measures；λ indicates proportional controller coefficient；P*Indicate total
The power regulation factor, beThe sum of；
Source/net/storage/lotus interconnected communication system includes dispatch command, requirement command, controllable burden, load control unit, electricity
Power electronic equipment, distributed generation resource, control unit, wherein dispatch command connects upper layer power grid, and communication with dispatch instructions is transmitted
To demand layer and state layer；The requirement command connects controllable burden, and the requirement command information of controllable burden is transmitted to need to
Seek layer；The status information of controllable burden is transmitted to state layer, and load control unit receives the information of control layer, and information is transmitted
To controllable burden；Power electronic equipment connects distributed generation resource, and transmits information to state layer, control unit reception state layer
With the information of control layer, and power electronic equipment is transmitted a signal to.
A kind of source/net/storage/lotus for energy Internet service coordinates and manages method, utilizes source/net/storage/lotus interconnected communication
System is that source/net/storage/lotus intelligent management system transmits demand variable, and the control requirement of feedback intelligent management system, specific to wrap
It includes：
Control parameter, the state for collecting source/net/storage/lotus by demand layer such as define at the letter of basic datas and control targe
Breath；
Acquire the running state parameter of source/net/storage/lotus in real time by state layer；
Realize that system power balance, general objective function representation are finally by control layer：
PDG+PS+PG=PL
In formula, PDG, PS, PGDistributed generation resource, the output of energy-storage units and power grid are indicated respectively；PLIndicate user's total load.
In the present embodiment, the output of default distributed generation resource, i.e. photovoltaic generating system is preferentially used for local self-sufficiency, point
The SOC states of analysis demand layer and state layer setting and the battery energy storage system received, determine the charging operations to energy-storage units, if
There is dump energy, accesses power distribution network.
When customer charge is contributed more than distributed generation resource, system judges the state of energy-storage system, if SOC is less than setting immediately
Minimum value SOCmin, need to be powered by grid side.Pass through the power grid P being collected into demand layer the last timeG_S_limAnd corresponding electricity
Valence instructs, according to the pre-set routine of user, economic dispatch operational mode, with PL_minIt indicates after user receives demand side management
Minimum load demand, i.e. the uncontrollable part of load determines whether user cuts economic model operation.
The control that distributed generation resource preferentially presses MPPT is contributed, when energy-storage units state-of-charge is beyond setting maximum value SOCmax
And the power regulation factorWhen setting the maximum power received more than power grid, control layer can determine to contribute distributed generation resourceIt is set as：
Control targe is coordinated and optimized to realize, the flow criterion of control layer refers to Fig. 2：
(1) demand layer receives setting information, including：Output state of the distributed generation resource under MPPT maximum power point tracking
PDG_M, maximum power P that power distribution network provides or receivesG_S_lim、PG_I_lim, system reference voltage U*；Battery energy storage system setting
Minimum and maximum state-of-charge SOCmin、SOCmax；User mode selects, minimum load when user agrees to receive demand side management
Demand PL_min；
(2) state layer receives status information, including：Distributed generation resource actual generation power PDG；It is female where source/storage/lotus
The practical measurement voltage U of line, power grid provide power PG；The instant SOC of battery energy storage system and output PS, user's real-time load PL；
(3) central controller of control layer first determines whether PL＞ PDGIt is whether true,
PL＞ PDGIt is invalid, then judge SOC >=SOCmaxIt is whether true, be, thenIt is invalid, thenMatch
The power that power grid receivesJudge PG_I≥PG_I_limIt is whether true, be, thenContinue to sentence
Disconnected PDG=PDG_MIt is whether true, it is that then distributed generation resource operating status switches, no, then the minimum of distributed generation resource generated output
ValueWherein, CpFor proportional controller coefficient；PG_S≥PG_S_limIt is invalid, then
In conclusion by the comprehensive coordination control and optimum management of above energy internet Zhong Yuan/net/storage/lotus, controlling
Preparative layer realizes the equilibrium of supply and demand, maintains power quality, the targets such as demand side management, realizes distributing rationally for electric energy, reach source/net/
The purpose of storage/lotus coordinated management.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of source/net/storage/lotus for energy Internet service coordinates and manages method, it is characterised in that：Using source/net/storage/
Lotus interconnected communication system is that source/net/storage/lotus intelligent management system transmits demand variable, and the control of feedback intelligent management system
It is required that；
Wherein, the source/net/storage/lotus coordinated management system includes source/net/storage/lotus intelligent management system and source/net/storage/lotus
Interconnected communication system；
Source/net/storage/lotus the intelligent management system includes demand layer, state layer and control layer, wherein
The demand layer is for receiving setting information, i.e., the base for source/net/storage/lotus that source/net/storage/lotus interconnected communication system collects
The information of plinth data and control targe includes at least output state P of the distributed generation resource under MPPT maximum power point trackingDG_M, electricity
The maximum power P that net provides or receivesG_S_lim、PG_I_lim, system reference voltage U*, battery energy storage system setting minimum with most
Big state-of-charge SOCmin、SOCmax, user mode selection, minimum load demand when user agrees to receive demand side management
PL_min；
The state layer for receiving operation information, that is, utilize source/net that source/net/storage/lotus interconnected communication system acquires in real time/
Storage/lotus running state parameter includes at least distributed generation resource actual generation power PDG, the practical measurement of busbar where source/storage/lotus
Voltage U, the instant SOC of battery energy storage system and output PS, user's real-time load PL, power grid exchange power PG；
The control layer includes central controller, the information data provided by demand layer, state layer, according in central controller
The optimum management of setting carries out condition judgment and control；The associated control parameters of control layer include at least the power of distributed generation resource
AdjustmentUser mode switching, battery energy storage system charge and discharge switching；The optimization pipe set in the central controller
Reason is：Introduce the power regulation factorThe power partition coefficient K of battery energy storage system and power gridD, proportional controller system
Number λ, expression formula are as follows：
Wherein, U is busbar voltage where source/storage/lotus that state layer measures；λ indicates proportional controller coefficient；P*Indicate total work(
Rate regulatory factor isThe sum of；
Source/net/storage/lotus the interconnected communication system includes dispatch command, requirement command, controllable burden, load control unit, electricity
Power electronic equipment, distributed generation resource, control unit, wherein the dispatch command connects upper layer power grid, and by communication with dispatch instructions
It is transmitted to demand layer and state layer；The requirement command connects controllable burden, and the requirement command information of controllable burden is transmitted
To demand layer；The status information of controllable burden is transmitted to state layer, and load control unit receives the information of control layer, and by information
It is transmitted to controllable burden；Power electronic equipment connects distributed generation resource, and transmits information to state layer, and control unit receives shape
The information of state layer and control layer, and transmit a signal to power electronic equipment；
The method specifically includes：
Control parameter, the state for collecting source/net/storage/lotus by demand layer define information with control targe；
Acquire the running state parameter of source/net/storage/lotus in real time by state layer；
Realize that system power balance, general objective function representation are finally by control layer：
PDG+PS+PG=PL
In formula, PDG, PS, PGDistributed generation resource power generation, the work(that the instant SOC of battery energy storage system is exchanged with output, power grid are indicated respectively
Rate；PLIndicate user's real-time load；
Wherein, the flow criterion of control layer is：
(1) demand layer receives setting information, including：Power P of the distributed generation resource under MPPT maximum power point trackingDG_M, power grid gives
The maximum power P for going out or receivingG_S_lim、PG_I_lim, system reference voltage U*；The minimum of battery energy storage system setting and maximum lotus
Electricity condition SOCmin、SOCmax；User mode selects, minimum load demand P when user agrees to receive demand side managementL_min；
(2) state layer receives status information, including：Distributed generation resource generated output PDG；The reality of busbar where source/storage/lotus
Voltage U is measured, power grid exchanges power PG；The instant SOC of battery energy storage system and output PS, user's real-time load PL；
(3) central controller of control layer first determines whether PL＞ PDGIt is whether true,
If set up, the state-of-charge SOC ＜ SOC of battery energy storage system are judgedminIt is whether true, it sets up, thenNot at
It is vertical, thenThe power that power grid providesJudge PG_S≥PG_S_limIt is whether true, it sets up, thenContinue to judge user's original loads demand PLD≥PLIt is whether true, it is then to continue to judge " whether user agrees to
Economical operation " is, thenIn above-mentioned Rule of judgment, PG_S≥PG_S_lim, PLD≥PL, " whether user
Agree to economical operation " in have one it is invalid, then
PL＞ PDGIt is invalid, then judge SOC >=SOCmaxIt is whether true, be, thenIt is invalid, thenPower grid receives
PowerJudge PG_I≥PG_I_limIt is whether true, be, thenContinue to judge PDG=
PDG_MIt is whether true, it is that then distributed generation resource operating status switches, no, then the power adjustment P of distributed generation resourceDG_lim=PL
P*+Cp(U*- U), wherein CpFor proportional controller coefficient；PG_S≥PG_S_limIt is invalid, then
2. coordinating and managing method as described in claim 1 for source/net/storage of energy Internet service/lotus, it is characterised in that：
When customer charge is more than distributed generation resource generated output, system judges the state of energy-storage system, if SOC is less than setting most immediately
Small value SOCmin, need to be powered by grid side；Pass through the power grid P being collected into demand layer the last timeG_S_limAnd corresponding electricity price refers to
It enables, according to the pre-set routine of user, economic operation model with PL_minIndicate the minimum after user receives demand side management
Workload demand, the i.e. uncontrollable part of load, determine whether user cuts economic model operation.
3. coordinating and managing method as described in claim 1 for source/net/storage of energy Internet service/lotus, it is characterised in that：
Distributed generation resource preferentially sends out power by the control of MPPT, when battery energy storage system state-of-charge is beyond setting maximum value SOCmax
And the power regulation factorWhen setting the maximum power received more than power grid, control layer can be determined distributed generation resource power adjustmentIt is set as：
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| CN105762934B (en) * | 2016-03-30 | 2017-09-26 | 南京邮电大学 | A kind of distributed coordination mixed control method based on energy interconnected electric power system |
| CN106786754A (en) * | 2016-12-29 | 2017-05-31 | 中国南方电网有限责任公司电网技术研究中心 | Cooperative control device and system for distributed energy |
| CN106911149B (en) * | 2017-04-14 | 2019-11-12 | 许继集团有限公司 | A kind of active distribution network demand response control method based on layering energy storage |
| CN108667012A (en) * | 2018-05-21 | 2018-10-16 | 国网山东省电力公司电力科学研究院 | Regional Energy the Internet sources lotus based on more scenes stores up dual-stage coordination optimizing method |
| CN109861281A (en) * | 2019-02-21 | 2019-06-07 | 国网山东省电力公司临沂供电公司 | One provenance net lotus stores up integrated coordination optimizing method and device, system |
| CN109728650B (en) * | 2019-03-14 | 2022-09-23 | 江苏金智科技股份有限公司 | Active power distribution network based on source network load and storage coordination control |
| CN110380397B (en) * | 2019-06-18 | 2022-12-23 | 天津大学 | Control framework suitable for medium-low voltage direct current power distribution and utilization system |
| CN111864748A (en) * | 2020-08-14 | 2020-10-30 | 国网山东省电力公司威海供电公司 | Monitoring and scheduling integrated system and method suitable for distributed photovoltaic grid connection |
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