CN112600242A - Micro-grid data acquisition and monitoring platform - Google Patents

Micro-grid data acquisition and monitoring platform Download PDF

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Publication number
CN112600242A
CN112600242A CN202011431770.3A CN202011431770A CN112600242A CN 112600242 A CN112600242 A CN 112600242A CN 202011431770 A CN202011431770 A CN 202011431770A CN 112600242 A CN112600242 A CN 112600242A
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power generation
generation device
state
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uncontrolled
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CN112600242B (en
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朱见涛
曹振武
郭振鹏
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Zhong Tengwei Network Beijing Technology Co ltd
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Zhong Tengwei Network Beijing 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • 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
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/242—Home appliances
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention provides a micro-grid data acquisition and monitoring platform which is used for acquiring data of a plurality of controlled electric devices and power generation devices within the range of a micro-grid, wherein the controlled electric devices are provided with programmable logic controlled intelligent switches; the intelligent switch is used for controlling the on-off states of the controlled electric equipment in a plurality of different time periods; the data acquisition comprises: collecting normal starting power, normal running power and the different time periods of the controlled electric equipment; and collecting a first operation time period when the uncontrolled power generation device is in an operation state. The power generation device comprises a controlled power generation device and an uncontrolled power generation device, and the working state of the controlled power generation device is controlled based on the running state of the uncontrolled device, the storage state of the electric energy storage device and the set working period. According to the invention, through the collection and monitoring of various state data in the micro-grid range, the normal use of electric equipment is ensured while the energy utilization is optimized.

Description

Micro-grid data acquisition and monitoring platform
Technical Field
The invention belongs to the technical field of microgrid operation and management, and particularly relates to a microgrid data acquisition and monitoring platform.
Background
In recent years, smart grids have become a hot point of research in the energy field. The intelligent power grid is the core of the modernization of the power grid in China. The micro-grid is an important component of a smart grid, is a small power generation and distribution system which is formed by collecting a distributed power supply, an energy storage device, an energy conversion device, related loads, a monitoring device and a protection device, and is an autonomous system capable of realizing self-control, protection and management. The system can be operated in a grid-connected mode with a large power grid, and can also be operated in an isolated mode. The micro-grid is an advanced application form of a future distributed power generation and supply system. The micro-grid is the biggest difference with a conventional power distribution network and a conventional power supply network in that the micro-grid can independently operate on the premise of ensuring the quality of electric energy.
Distributed Generation (DG) has many advantages, and can solve the problem that the conventional energy can not be solved, for example, for remote and laggard areas, the traditional centralized power supply system has technical difficulty or is economically infeasible, and at the moment, a small-scale DG mode is used for providing electric energy to utilize renewable energy, so that the pollution to the environment can be reduced, and the economic benefit of the whole power Generation system can be improved; the DG does not need long-distance power transmission and transformation facilities, so that compared with a traditional power system, a part of power transmission and transformation capacity can be reduced, the power transmission loss is reduced, and the pressure of infrastructure facilities is relieved; DG is a very effective way for reasonably utilizing resources, renewable energy sources such as solar energy, wind energy and the like can be fully utilized by utilizing the DG, and the utilization rate is improved.
In order to fully develop and exert the DG energy efficiency and weaken the adverse effect of the DG on the power grid, the American reliability technology solution institute (CERTS) provides an organization form which can better exert the potential capability of the DG, namely a microgrid: the microgrid system comprises a micro power supply and various loads, and can supply electric energy and heat simultaneously; the power generation equipment in the microgrid is generally connected into the microgrid through a power electronic device, and the power electronic device is responsible for energy conversion and is required to provide corresponding control for the power electronic device; for a power grid, the microgrid is equivalent to a controllable unit, and can meet various requirements of users, such as the requirements of power supply reliability, safety, power quality and the like. By formulating a reasonable operation plan, the micro-grid Energy Management System (EMS) can fully utilize renewable energy with low pollution and low cost, reduce environmental geophysical prospecting and improve the utilization efficiency of energy.
The chinese patent application CN202010769447.0 proposes a method for real-time regulation and control of micro-power supply and energy storage, which is characterized in that the charging and discharging states of the energy storage system no longer only depend on the state of energy storage SOC, but also consider the constraint conditions such as priority of energy storage and power supply and maximum charging and discharging power; when the grid-connected operation is carried out, under the condition that the peak-valley load occurrence time of a known system is balanced, the energy storage and power supply mode is divided into an energy storage priority mode, a commercial power priority mode and a general mode, so that peak clipping and valley filling are realized, the output fluctuation of a micro power supply is stabilized, the utilization rate of renewable energy is improved, and the economic benefit is maximized; when the off-grid operation is carried out, the load is divided into an important load and a controllable load, the micro-source output is reduced through load shedding, the micro-grid operation under various working conditions is met, a specific load shedding value and a reduced micro-source output value are given, the reduced micro-source output is distributed to all distributed micro-sources for common bearing according to the weight by using a weighted distribution method, the important load is guaranteed not to be powered off, the energy utilization efficiency is maximized, and the micro-grid operation is stable.
The chinese patent publication CN111711214A discloses a microgrid scheduling monitoring system, which includes a large power grid and a microgrid scheduling unit, wherein the large power grid is connected with a plurality of microgrid scheduling units, and the plurality of microgrid scheduling units are connected with each other to form a power grid framework with the large power grid as a center and each microgrid scheduling unit as a node, so as to provide a flow channel for electric quantity transmission; little electric wire netting scheduling unit includes power generation end, load end, energy storage dc-to-ac converter, detection module, monitoring module and incoming end, the incoming end is connected with the energy storage dc-to-ac converter, the type of the required electric quantity of input is turned into with the output electric quantity to the energy storage dc-to-ac converter, eliminates the electric quantity exchange obstacle between each little electric wire netting scheduling unit and between big electric wire netting and the little electric wire netting scheduling unit. The method has the advantages that the electric quantity distribution of the micro power grid is realized, the micro power grid dispatching and the large power grid dispatching are combined with each other, the power grid is optimized, the electric quantity is distributed reasonably, the electric quantity utilization rate is improved, and the power supply requirement is met.
On the other hand, in recent years, with the development of the internet of things technology, a house is taken as a platform, facilities related to home life are integrated by utilizing a comprehensive wiring technology, a network communication technology, an intelligent home-system design scheme safety precaution technology, an automatic control technology and an audio and video technology, and an efficient management system for home facilities and family schedule affairs can be gradually constructed to realize an environment-friendly and energy-saving living environment. In this case, the smart home devices themselves have certain energy saving properties. How to make the smart home devices in the micro-grid range can normally work, and can ensure the original energy-saving property, and make the micro-grid itself realize the optimal scheduling of system energy, the prior art does not notice the problems, and does not provide an effective technical scheme.
Disclosure of Invention
In order to solve the technical problems, the invention provides a microgrid data acquisition and monitoring platform which is used for acquiring data of a plurality of controlled electric devices and power generation devices within the range of a microgrid, wherein the controlled electric devices are provided with programmable logic controlled intelligent switches; the intelligent switch is used for controlling the on-off states of the controlled electric equipment in a plurality of different time periods; the data acquisition comprises: collecting normal starting power, normal running power and the different time periods of the controlled electric equipment; and collecting a first operation time period when the uncontrolled power generation device is in an operation state. The power generation device comprises a controlled power generation device and an uncontrolled power generation device, and the working state of the controlled power generation device is controlled based on the running state of the uncontrolled device, the storage state of the electric energy storage device and the set working period. According to the invention, through the collection and monitoring of various state data in the micro-grid range, the normal use of electric equipment is ensured while the energy utilization is optimized.
In a first aspect of the invention, a microgrid data acquisition platform is provided for acquiring data of a plurality of controlled electric devices and power generation devices within the range of a microgrid.
As an innovative point, in the invention, the controlled electric equipment is provided with an intelligent switch controlled by programmable logic;
the intelligent switch is used for controlling the on-off states of the controlled electric equipment in a plurality of different time periods;
the intelligent switch is communicated with the mobile terminal through the two-dimension code; the mobile terminal is provided with an APP matched with the intelligent switch, and the APP is used for setting the different time periods;
the power generation device comprises a controlled power generation device and an uncontrolled power generation device;
when the power generation parameters in the micro-grid range meet preset conditions, the uncontrolled power generation device is in an operating state, otherwise, the uncontrolled power generation device is in a closed state;
the data acquisition comprises:
collecting normal starting power, normal running power and the different time periods of the controlled electric equipment;
and collecting a first operation time period when the uncontrolled power generation device is in an operation state.
Further, as a key technical means for further realizing the innovation point, the controlled power generation device comprises a fuel oil power generation device and a fuel gas power generation device;
the operation state of the controlled power generation device is controllable, the operation state comprises opening and closing, and the output power in the opening state is adjustable.
And controlling the running state of the controlled power generation device based on the data acquisition result.
In addition, as a further preferred mode, a field combined sensing unit is arranged in the range of the micro-grid, and the field combined sensing unit comprises a light intensity sensor and a wind speed sensor;
predicting a second power generation parameter in a future time period within the range of the microgrid based on the first power generation parameter acquired by the field combination sensing unit;
and controlling the running state of the controlled power generation device based on the data acquisition result and the second power generation parameter.
In another aspect of the present invention, a microgrid data monitoring platform is provided, configured to monitor a set operating period of a plurality of controlled electric devices within a range of a microgrid and an operating state of a power generation apparatus.
The microgrid data monitoring platform of the present invention may be used in conjunction with the microgrid data acquisition platform of the first aspect.
More specifically, as one of the key technical means, in the microgrid data monitoring platform on the other hand, the set working period of the controlled electric equipment is controlled by a user terminal through an intelligent switch;
at least one electric energy storage device is arranged in the range of the micro-grid, and working energy is provided for the intelligent switch through the electric energy storage device;
the power generation device comprises a controlled power generation device and an uncontrolled power generation device;
monitoring the operating state of the power generation device specifically comprises:
monitoring an operational state of the uncontrolled power plant,
and controlling the working state of the controlled power generation device based on the running state of the uncontrolled device, the storage state of the electric energy storage device and the set working period.
Preferably, the storage state of the electric energy storage device comprises a current remaining available electric energy proportion value;
the operation states of the uncontrolled device include an off state and an on state, as well as a time period and corresponding output power in the on state.
As a further innovation, the microgrid data monitoring platform further comprises a prediction engine;
the prediction engine predicts a possible operation state of the uncontrolled device within a future predetermined time period based on a current operation state of the uncontrolled device;
the operating states of the uncontrolled device include the current operating state and possible operating states.
More specifically, the working state of the controlled power generation device comprises a shutdown state and an adjustable operation state;
in the adjustable operating state, the output power of the controlled power generation device is adjustable.
According to the technical scheme, the energy utilization is optimized through the collection and monitoring of various state data in the micro-grid range, and meanwhile, the normal use of the electric equipment is ensured.
Further advantages of the invention will be apparent in the detailed description section in conjunction with the drawings attached hereto.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a diagram of a main body architecture of a microgrid data acquisition platform according to an embodiment of the present invention
FIG. 2 is a schematic diagram of the energy storage state of the energy storage battery pack in the embodiment of FIG. 1
FIG. 3 is operation decision logic for the energy storage battery pack of FIG. 2
FIG. 4 is a schematic diagram of data acquisition and control performed by the system of FIG. 1
FIG. 5 is a control data flow diagram of a smart home device used in the system of FIG. 1
Fig. 6 is a schematic diagram of an embodiment of a microgrid data monitoring platform
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Referring to fig. 1, a body architecture diagram of a microgrid data acquisition platform according to an embodiment of the present invention is shown.
In fig. 1, the microgrid data acquisition platform is configured to acquire data of a plurality of controlled electric devices and power generation devices within a range of the microgrid.
The controlled electric equipment is provided with an intelligent switch controlled by programmable logic; the intelligent switch is used for controlling the on-off states of the controlled electric equipment in a plurality of different time periods;
preferably, the plurality of controlled electric devices correspond to one intelligent switch, the intelligent switch is configured with a plurality of group control sockets, and each group control socket is set with different on-off time periods and corresponds to the plurality of controlled electric devices.
The power generation device comprises a controlled power generation device and an uncontrolled power generation device;
and when the power generation parameters in the micro-grid range meet the preset conditions, the uncontrolled power generation device is in an operating state, otherwise, the uncontrolled power generation device is in a closed state.
It can be seen that, in various embodiments of the present invention, the uncontrolled power generation device is a power generation device that operates adaptively with the environment, and is not controlled by a user;
the controlled power generation device is a parameter which is automatically adjusted and controlled based on the existing parameter, and can also be controlled and adjusted based on the control parameter actively provided by the user.
In fig. 1, at least one energy storage battery pack is further included in the range of the microgrid; the energy storage battery pack is preset with an upper limit and a lower limit of a residual electric quantity proportional value.
The energy storage battery pack comprises three groups of storage batteries, each group is provided with a Battery Management System (BMS) and a bidirectional energy Conversion System (Power Conversion System, PCS), and the BMS effectively checks, controls and maintains the running state of each battery in the System and realizes remote communication with a background central control System.
In order to effectively prolong the service life of the energy storage battery pack and avoid frequent deep charging and discharging, the SOC change interval of the energy storage battery pack needs to be reasonably set. According to the functional positioning requirement of the energy storage system, four key nodes are selected to define the change intervals of the SOC, namely the SOCmin、SOClow、SOChighAnd SOCmax. See in particular the schematic diagram depicted in fig. 2.
Based on fig. 2, the energy storage battery pack is preset with an upper limit and a lower limit of a residual electric quantity proportion value;
the arrangement is mainly to avoid the damage of excessive charging and discharging to the energy storage battery pack and is determined by the physical characteristics of the energy storage battery pack.
The stability of the microgrid is further described in connection with fig. 2.
In fig. 2, SOC is a key parameter for controlling strategy execution, and its correctness is related to the stability of the microgrid system. And the three groups of PCS realize charge-discharge current sharing among the battery packs according to the control strategies of the PCS. Because sampling errors of voltage and current of three groups of PCS (Power conversion System) cannot be completely equalized, SOC (state of charge) between storage battery groups is allowed to have certain deviation, namely MAXSOC-MINSOC≤S，
And S is the maximum difference allowed by the SOC between the battery groups. When the system detects that the three groups of storage batteries can not meet the conditions, if MAX is adoptedSOC＞SOChighAnd the battery pack with the minimum SOC exits from operation, and conversely, the battery pack with the maximum SOC exits from operation. Meanwhile, the system can not ensure that the SOC of the three groups of batteries are completely consistent under the long-term running condition, so the system judges the region to which the SOC of the energy storage system belongs according to the SOC of the three groups of batteries, and the judgment logic is shown in figure 3, wherein the figure is MIDSOCThe battery pack with the SOC at the middle value is adopted.
Preferably, the intelligent switch is communicated with the mobile terminal through the two-dimension code; the mobile terminal is provided with an APP matched with the intelligent switch, and the APP is used for setting the plurality of different time periods.
Reference is next made to fig. 4.
The data acquisition of the microgrid data acquisition platform comprises the following data acquisition:
normal starting power, normal running power and the plurality of different time periods of the controlled electric equipment;
a first operation time period and output power when the uncontrolled power generation device is in an operation state;
a second power generation parameter within a future time period within the microgrid range;
and the current residual capacity proportion value of the energy storage battery pack.
Wherein the uncontrolled power generation device comprises a wind power generation device and a solar power generation device;
the power generation parameters include wind speed and solar intensity.
The controlled power generation device comprises a fuel oil power generation device and a fuel gas power generation device;
the operation state of the controlled power generation device is controllable, the operation state comprises opening and closing, and the output power in the opening state is adjustable.
And controlling the running state of the controlled power generation device based on the data acquisition result.
In the process of implementing the embodiment specifically, a field combined sensing unit can be arranged in the range of the microgrid, and the field combined sensing unit comprises a light intensity sensor and a wind speed sensor;
predicting a second power generation parameter in a future time period within the range of the microgrid based on the first power generation parameter acquired by the field combination sensing unit;
and controlling the running state of the controlled power generation device based on the data acquisition result and the second power generation parameter.
The first power generation parameter includes an operating state of the uncontrolled device, the operating state including a current operating state and a possible operating state.
And predicting the possible operation state of the uncontrolled device in a future preset time period based on the current operation state of the uncontrolled device.
Fig. 5 is a control data flow diagram of the smart home device used in the system of fig. 1.
In the embodiment of fig. 5, the controlled electric equipment is an intelligent household equipment configured with an intelligent switch controlled by programmable logic, and includes an intelligent router, an intelligent air conditioner and an intelligent water heater.
The intelligent switch of the intelligent household equipment is provided with a two-dimension code, and the intelligent switch is communicated with the mobile terminal through the two-dimension code; the mobile terminal is provided with an APP matched with the intelligent switch, and the APP is used for setting the plurality of different time periods, such as a table shown in fig. 5, so that the intelligent switch controls the on-off states of the controlled electric equipment in the plurality of different time periods.
Based on the acquisition platform shown in fig. 1, the invention also provides a monitoring platform, and the monitoring platform controls the working state of the controlled power generation device in the microgrid based on the data obtained by the data acquisition platform.
More specifically, referring to fig. 6, fig. 6 provides a microgrid data monitoring platform implemented based on the data acquisition platform in fig. 1, and the microgrid data monitoring platform is used for monitoring the set working periods of a plurality of controlled electric devices within the range of the microgrid and the operating state of a power generation device.
The set working period of the controlled electric equipment is controlled by a user terminal through an intelligent switch;
at least one electric energy storage device is arranged in the range of the micro-grid, and working energy is provided for the intelligent switch through the electric energy storage device;
the power generation device comprises a controlled power generation device and an uncontrolled power generation device;
monitoring the operating state of the power generation device specifically comprises:
monitoring an operational state of the uncontrolled power plant,
and controlling the working state of the controlled power generation device based on the running state of the uncontrolled device, the storage state of the electric energy storage device and the set working period.
The storage state of the electric energy storage device comprises a current residual available electric energy proportion value;
the operation states of the uncontrolled device include an off state and an on state, as well as a time period and corresponding output power in the on state.
The microgrid data monitoring platform also comprises a prediction engine;
the prediction engine predicts a possible operation state of the uncontrolled device within a future predetermined time period based on a current operation state of the uncontrolled device;
the operating states of the uncontrolled device include the current operating state and possible operating states.
The working state of the controlled power generation device comprises a shutdown state and an adjustable operation state;
in the adjustable operating state, the output power of the controlled power generation device is adjustable.
According to the technical scheme, the energy utilization is optimized through the collection and monitoring of various state data in the micro-grid range, and meanwhile, the normal use of the electric equipment is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a little electric wire netting data acquisition platform for to a plurality of controlled consumer and power generation facility in little electric wire netting scope carry out data acquisition, its characterized in that:
the controlled electric equipment is provided with an intelligent switch controlled by programmable logic;
the intelligent switch is used for controlling the on-off states of the controlled electric equipment in a plurality of different time periods;
the intelligent switch is communicated with the mobile terminal through the two-dimension code; the mobile terminal is provided with an APP matched with the intelligent switch, and the APP is used for setting the different time periods;
the power generation device comprises a controlled power generation device and an uncontrolled power generation device;
when the power generation parameters in the micro-grid range meet preset conditions, the uncontrolled power generation device is in an operating state, otherwise, the uncontrolled power generation device is in a closed state;
the data acquisition comprises:
collecting normal starting power, normal running power and the different time periods of the controlled electric equipment;
and collecting a first operation time period when the uncontrolled power generation device is in an operation state.
2. The microgrid data acquisition platform of claim 1, wherein:
the micro-grid range also comprises at least one energy storage battery pack;
the energy storage battery pack is preset with an upper limit and a lower limit of a residual electric quantity proportional value;
the data acquisition further comprises: and acquiring the current residual electric quantity proportion value of the energy storage battery pack.
3. A microgrid data acquisition platform as claimed in claim 1 or 2, characterized in that:
the uncontrolled power generation device comprises a wind power generation device and a solar power generation device;
the power generation parameters include wind speed and solar intensity.
4. A microgrid data acquisition platform as claimed in claim 1 or 2, characterized in that:
the controlled power generation device comprises a fuel oil power generation device and a fuel gas power generation device;
the operation state of the controlled power generation device is controllable, the operation state comprises opening and closing, and the output power in the opening state is adjustable.
5. The microgrid data acquisition platform of claim 4, wherein:
and controlling the running state of the controlled power generation device based on the data acquisition result.
6. The microgrid data acquisition platform of claim 5, wherein:
a field combined sensing unit is arranged in the range of the micro-grid and comprises a light intensity sensor and a wind speed sensor;
predicting a second power generation parameter in a future time period within the range of the microgrid based on the first power generation parameter acquired by the field combination sensing unit;
and controlling the running state of the controlled power generation device based on the data acquisition result and the second power generation parameter.
7. The utility model provides a little electric wire netting data monitoring platform for to a plurality of controlled consumer in little electric wire netting scope set for the operating condition of working period and power generation facility and monitor, its characterized in that:
the set working period of the controlled electric equipment is controlled by a user terminal through an intelligent switch;
at least one electric energy storage device is arranged in the range of the micro-grid, and working energy is provided for the intelligent switch through the electric energy storage device;
the power generation device comprises a controlled power generation device and an uncontrolled power generation device;
monitoring the operating state of the power generation device specifically comprises:
monitoring an operational state of the uncontrolled power plant,
and controlling the working state of the controlled power generation device based on the running state of the uncontrolled device, the storage state of the electric energy storage device and the set working period.
8. The microgrid data monitoring platform of claim 7, wherein:
the storage state of the electric energy storage device comprises a current residual available electric energy proportion value;
the operation states of the uncontrolled device include an off state and an on state, as well as a time period and corresponding output power in the on state.
9. The microgrid data monitoring platform of claim 7, wherein:
the microgrid data monitoring platform also comprises a prediction engine;
the prediction engine predicts a possible operation state of the uncontrolled device within a future predetermined time period based on a current operation state of the uncontrolled device;
the operating states of the uncontrolled device include the current operating state and possible operating states.
10. The microgrid data monitoring platform of claim 9, wherein:
the working state of the controlled power generation device comprises a shutdown state and an adjustable operation state;
in the adjustable operating state, the output power of the controlled power generation device is adjustable.
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