CN110426590B - Multi-energy information interaction device suitable for comprehensive energy system - Google Patents
Multi-energy information interaction device suitable for comprehensive energy system Download PDFInfo
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- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
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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
- 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
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- 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
- Y04S40/128—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 involving the use of Internet protocol
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Abstract
The invention discloses a multi-energy information interaction device suitable for an integrated energy system, which supports various communication modes and communication protocols, can acquire and correspondingly control data of various distributed energy sources, intelligent instruments and dynamic ring equipment, has a storage function, has a local coordination control function, can analyze the running state and trend of each energy source equipment, combines regional energy utilization information and optimizes the running mode of the system. Meanwhile, the information can be uploaded to the superior master station, various strategy instructions sent by the superior master station are supported to be received, and a corresponding control sequence is generated according to the strategy instructions, so that the automatic control of the distributed energy is realized. The invention can realize the data acquisition and interaction of various energy sources in the comprehensive energy system, realize the in-situ coordination control of the multifunctional system, support the receiving master station downloading control strategy to control the related equipment, reduce the equipment quantity and complexity of the access system, improve the system debugging efficiency and provide support for the coordination and optimization operation of the comprehensive energy system.
Description
Technical Field
The invention relates to a multi-energy information interaction device suitable for an integrated energy system, and belongs to the technical field of multi-energy information acquisition and control of the integrated energy system.
Background
Currently, energy is the power and basis for social and economic development. Because the traditional fossil energy is exhausted day by day, the increase of the energy utilization efficiency, the development of new energy and the enhancement of energy coordination and complementation become inevitable choices for solving the contradiction between the increase of energy demand and the shortage of energy in the social and economic development process. In the traditional energy industry, due to the essential difference of different energy sources, in a social energy supply system, power supply, gas supply and heating/cooling ring sections are often independently planned, designed and operated, and lack of coordination among the different energy supply systems, so that the social energy supply system is considered to be an important reason for low safety, poor reliability and low energy efficiency of the social energy supply system. Therefore, the research and practice of the technologies related to the integrated energy system have become important development directions in the future energy field.
The comprehensive energy system is a multi-energy complementary and integrated optimized energy system, covers various energy systems mainly comprising electricity, heat, gas and the like, realizes organic coordination and cooperative optimization of different types of energy, and becomes a necessary way for adapting to the change of the social energy field and ensuring the safety and sustainable development of energy consumption of society. In order to realize the coordination control among the multiple energy systems, firstly, the relevant equipment and operation parameters of various energy systems need to be collected. Because the data types and the communication protocols of all energy system devices are different, a plurality of information acquisition devices need to be installed, and the complexity of the system is increased.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides the multi-energy information interaction device suitable for the comprehensive energy system, so that the data acquisition and interaction of various energy sources in the comprehensive energy system are realized, the local coordination control of the multi-energy system can be realized, and the support is provided for the coordination and optimization operation of the comprehensive energy system.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a multi-energy information interaction device suitable for use in an integrated energy system, comprising: the energy monitoring module has the functions of distributed power generation system monitoring, energy storage system monitoring, triple energy supply station monitoring, load monitoring and environment monitoring; the distributed power supply statistical analysis function is provided, the statistics and measurement are carried out on the related data of the new energy operation, and the related data are visually displayed in a curve and report form; the distributed energy control module is used for controlling a distributed power generation operation mode: controlling the running state of the distributed power generation according to the running conditions inside the main network and the new energy; controlling an energy storage operation mode: carrying out constant power charge and discharge, constant current charge and discharge and constant voltage charge and discharge control on the energy storage system in a grid-connected operation mode, and setting voltage and frequency fixed values of v/f operation of the energy storage system in an off-grid operation mode; strategy generation and issuing: carrying out strategy adjustment on the distributed energy according to the current environmental load condition, issuing the device for execution, carrying out operation adjustment on the distributed energy according to plan data issued by a superior system, and issuing the device for execution; the microgrid management module is used for controlling the start and stop of a microgrid: receiving a micro-grid starting/stopping instruction of a distributed power generation access control master station or a local background, and completing starting/stopping operations of each device and switch of a micro-grid, wherein the micro-grid is started in a grid-connected state, and an off-grid starting function is supported; the method comprises the following steps of switching the operation modes of the microgrid, receiving a microgrid connection/disconnection instruction of a distributed generation access control master station, and completing the microgrid connection/disconnection state switching, wherein the microgrid operation state switching realizes seamless switching or seam switching according to the configuration of microgrid equipment; the method comprises the steps of microgrid online power control, namely receiving a microgrid power regulation instruction of a master station at an upper level, regulating the output of each distributed power generation unit according to the configuration condition of microgrid equipment, and realizing power control in different modes; and the micro-grid is stably controlled, the joint operation of all distributed generation units in a micro-grid connection/off-grid operation mode is realized, the voltage and the frequency of the system are stabilized through the coordinated control of all distributed power supplies, and the optimal operation of the whole micro-grid system is realized.
Preferably, the method further comprises the following steps: the system comprises a data acquisition module, a data storage and query module, an authority management module, a log function module and a remote control and remote regulation function, wherein the data acquisition module adopts various communication interfaces, communication protocol protocols and data interaction interfaces with other systems; the data storage and query module is used for storing various telemetering, remote signaling and remote pulse data and events to be stored, the sampling interval supports various choices, and the data storage and query module can be configured with sampling periods of second, one minute, five minutes and one hour for storage; the method has the advantages that various stored data and events are queried, the conditional retrieval function is realized, and the query algorithm is optimized; the method has the functions of data calculation and statistics and supports the statistics of the maximum value, the minimum value and the average value; the authority management module is used for distributing user authority according to function types, and the function types comprise: browsing, parameter setting, remote control execution, strategy setting, operation, monitoring, protection setting, database maintenance, picture report maintenance, historical data maintenance and operation maintenance; the log function module; the log function module is used for storing equipment starting information, system master-slave switching information, running states of all channels, running states of software modules, digital quantity alarm records, analog quantity alarm records, remote control operation records, parameter modification records, manual replacement records, file operation records and equipment running record logs, simultaneously, provides various queries of log data, allows a client to browse and retrieve, is convenient to query log data of various equipment, various types and all time periods, and displays query result data in a table mode.
Preferably, the energy monitoring module comprises the following sub-modules:
distributed power generation system monitoring submodule:
the monitoring system is used for monitoring real-time operation information, faults and alarm information of the fan and the photovoltaic power generation system; monitoring wind power generation: displaying a real-time power generation power curve according to the current power, daily generated energy, total generated energy, wind speed and running state; photovoltaic power generation monitoring: displaying a real-time power generation power curve by the current power, daily power generation amount, total power generation amount, light irradiance, photovoltaic panel temperature, photovoltaic panel direct-current end voltage and current;
energy storage system monitoring submodule:
the monitoring device is used for monitoring the energy storage bidirectional converter, the battery management system and the battery module; and (3) real-time operation information of the energy storage battery: the voltage, the internal resistance, the pre-estimation performance, the SOC and the alarm information of the single battery are comprehensively monitored; the battery of a specific branch is diagnosed and maintained independently through a monitoring system;
triple energy supply station submodule:
the system is used for monitoring the operation data information of the gas turbine, the boiler, the refrigerating and heating devices of the triple energy supply station, carrying out early warning and alarming according to threshold setting, and carrying out statistical analysis on the operation data;
and a load monitoring submodule:
the system is used for monitoring and counting the load in the new energy and providing a basis for the power balance control of the new energy; when new energy is constructed, all loads are classified, during operation, all loads are classified and monitored, and the balance of active load and reactive load of the whole new energy is realized by matching with an on-site load controller;
an environment monitoring submodule:
for integrating environmental monitoring functions, comprising: total radiation, total scattering, wind speed, wind direction, outdoor temperature and humidity and air pressure information;
energy statistics analysis submodule:
the system is used for counting and metering related data of new energy operation and visually displaying the data in the form of curves and reports; the method comprises the following steps: displaying new energy operation indexes and metering electric energy.
As a preferred scheme, the new energy operation index shows: the system is used for carrying out curve display on relevant statistical data aiming at new energy operation, and comprises a power generation capacity curve, a continuous power generation time curve and a CO2 emission reduction curve; the method comprises the steps of displaying real-time operation data of the new energy, monitoring the operation state of the new energy, displaying the appearances of the photovoltaic power station and the energy storage equipment, and displaying operation data related to the total generated energy and the operation time of the new energy.
Preferably, the electric energy metering comprises the following steps: the system is used for accurately measuring the power generation unit and the energy storage unit in the new energy system, is used for marketing, statistics and analysis, and comprises the following components: measuring the generated energy of the new energy, including active electric quantity and reactive electric quantity; calculating power generation efficiency and energy-saving displacement reduction data by combining results predicted by the environmental parameters; performing bidirectional metering on the generated energy of the energy storage system, wherein the bidirectional metering comprises forward active power, reverse active power, forward reactive power and reverse reactive power and is used for analyzing the efficiency of the energy storage system; and (4) metering the load side, and guiding the load side to reasonably and scientifically use the electricity by combining the property analysis and the historical data analysis of the load.
Preferably, the communication interface includes: RS232, 485/422, Ethernet, GPRS/CDMA, wifi.
Preferably, the communication protocol includes: the upper communication supports IEC101, 104, CDT, 61850, Modbus, DL/T645, MQTT and COAP protocols, and has the functions of remote signaling, remote measurement, remote control, remote regulation and fixed value setting; the lower communication supports Modbus _ RTU/TCP, DLT645-1997/2007 meter reading protocols, IEC104 and 61850.
Preferably, the other system includes: the system comprises a dispatching automation system, a power distribution automation system, a power utilization information acquisition system, an equipment (asset) operation and maintenance lean management system, a meteorological information system, a photovoltaic energy management system, an energy storage energy management system and a microgrid energy management system.
Has the advantages that: the multifunctional information interaction device suitable for the comprehensive energy system, provided by the invention, can realize data acquisition and interaction of various energy sources in the comprehensive energy system, has edge computing capability, can realize local coordination control of the multifunctional system, and simultaneously supports receiving of a master station downloading control strategy to control related equipment, so that the number and complexity of equipment accessed to the system are reduced, the system debugging efficiency is improved, and support is provided for the coordination optimization operation of the comprehensive energy system.
Drawings
FIG. 1 is a functional architecture diagram of a multi-functional information interaction device according to the present invention;
fig. 2 is an interaction topology diagram of the multifunctional information interaction device of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, a multi-energy information interaction device suitable for an integrated energy system can collect data of various distributed energy sources (such as photovoltaic, triple generation, wind power, geothermal, heat storage, and energy storage) and intelligent instruments; the system has a localized coordination control function, can analyze the running state and trend of each energy device, combines regional energy utilization information, and optimizes the running mode of the system; the information can be uploaded to the superior master station, various coordination control strategy instructions sent by the superior master station are supported to be received, and a corresponding control sequence is generated according to the strategy instructions, so that the automatic control of the distributed energy is realized. The system specifically comprises the following modules:
the data acquisition module supports various communication interfaces and protocol protocols, can acquire analog quantity and digital quantity, and has the functions of remote control and remote regulation.
(1) The communication interface supports RS232, 485/422, Ethernet, GPRS/CDMA and wifi communication modes.
(2) The communication protocol comprises: the upper communication supports IEC101, 104, CDT, 61850, Modbus, DL/T645, MQTT and COAP protocols, and has the functions of remote signaling, remote measurement, remote control, remote regulation and fixed value setting. The lower communication supports Modbus _ RTU/TCP (configurable), DLT645-1997/2007 meter reading protocol, IEC104 and 61850.
(3) The data interaction interface with other systems is provided, and the other systems comprise: the system comprises a dispatching automation system, a power distribution automation system, a power utilization information acquisition system, an equipment (asset) operation and maintenance lean management system, a meteorological information system, a photovoltaic energy management system, an energy storage energy management system and a microgrid energy management system.
The data storage and query module can store various telemetering, remote signaling and remote pulse data and events which need to be stored, the sampling interval supports various choices, and the data storage and query module can be configured with sampling periods of second, one minute, five minutes and one hour for storage. The method can be used for inquiring various stored data and events, has a conditional retrieval function, optimizes an inquiry algorithm and ensures inquiry speed. The method has the functions of data calculation and statistics, and supports statistics of the maximum value, the minimum value and the average value.
And the authority management module can distribute user authority according to the function types, such as browsing, parameter setting, remote control execution, strategy setting, operation, monitoring, protection setting, database maintenance, picture report maintenance, historical data maintenance and operation maintenance.
The log function module can store equipment starting information, system master-slave switching information, running states of all channels, running states of software modules, digital quantity alarm records, analog quantity alarm records, remote control operation records, parameter modification records, manual replacement records, file operation records and equipment running record logs. Meanwhile, a plurality of query means of log data are provided, the client is allowed to browse and retrieve, log data of various devices, various types and various time periods can be conveniently queried, and the display of query result data can be provided in a table mode.
The energy monitoring module has the functions of monitoring a distributed power generation system (photovoltaic and wind power), an energy storage system, a triple energy supply station, a load and an environment. The distributed power supply statistical analysis system has a distributed power supply statistical analysis function, and is used for counting and metering related data of new energy operation and visually displaying the data in a curve and report form. The system comprises the following sub-modules:
(1) distributed power generation system monitoring submodule:
and monitoring real-time operation information, faults and alarm information of the fan and the photovoltaic power generation system. The wind power generation can monitor the current power, daily generated energy, total generated energy, wind speed and running state, and can display a real-time generated power curve. Photovoltaic power generation monitoring can display the following information: the current power, daily generated energy, total generated energy, light irradiance, photovoltaic panel temperature, photovoltaic panel direct current end voltage and current of the photovoltaic power generation system can display a real-time power generation power curve.
(2) Energy storage system monitoring submodule:
the method comprises the following steps: monitoring an energy storage bidirectional converter, monitoring a battery management system and monitoring a battery module. And (3) real-time operation information of the energy storage battery: and the voltage, the internal resistance, the estimation performance, the SOC and the alarm information of the single battery are comprehensively monitored. The monitoring system can be used for diagnosing and maintaining the batteries of the specific branch independently.
(3) Triple energy supply station submodule:
the operation data information of the gas turbine, the boiler, the refrigerating device and the heating device of the triple energy supply station is monitored, early warning and alarming are carried out according to threshold setting, and statistical analysis is carried out on the operation data.
(4) And a load monitoring submodule:
and monitoring and counting the load in the new energy, and providing a basis for the power balance control of the new energy. When the new energy is constructed, all loads are classified, during operation, the loads can be classified and monitored, and the balance of active load and reactive load of the whole new energy is realized by matching with a local load controller.
(5) An environment monitoring submodule:
the integrated environment monitoring function mainly comprises: total radiation, total scattering, wind speed, wind direction, outdoor temperature and humidity, and air pressure information.
(6) Energy statistics analysis submodule:
and (4) counting and metering related data of the new energy operation, and visually displaying the data in a curve and report form.
6.1 displaying new energy operation indexes:
performing curve display on relevant statistical data aiming at new energy operation, wherein the curve display comprises a power generation capacity curve, a continuous power generation time curve and a CO2 displacement reduction curve; the method comprises the steps of displaying real-time operation data of the new energy, monitoring the operation state of the new energy, displaying the appearances of the photovoltaic power station and the energy storage equipment, and displaying relevant important operation data of the total generated energy and the operation time of the new energy.
6.2 electric energy metering:
and the power generation unit and the energy storage unit in the new energy system are accurately measured and used for marketing, statistics and analysis. The method mainly comprises the following steps: and measuring the generated energy of the new energy, wherein the measured generated energy mainly comprises active electric quantity and reactive electric quantity. And calculating the power generation efficiency and the energy-saving displacement-reducing data by combining the results predicted by the environmental parameters. And performing bidirectional measurement on the generated energy of the energy storage system, wherein the bidirectional measurement comprises positive active power, reverse active power, positive reactive power and reverse reactive power, and is used for analyzing the efficiency of the energy storage system. And (4) metering the load side, and guiding the load side to reasonably and scientifically use the electricity by combining the property analysis and the historical data analysis of the load.
Distributed energy control module: (1) distributed generation operation mode control: the operation state of the distributed power generation is controlled mainly according to the operation conditions inside the main network and the new energy. (2) Controlling an energy storage operation mode: the energy storage system can be subjected to constant power charge and discharge, constant current charge and discharge and constant voltage charge and discharge control in a grid-connected operation mode. The voltage and frequency ratings of the energy storage system v/f operation may be set in the off-grid mode of operation. (3) Strategy generation and issuing: the strategy adjustment can be carried out on the distributed energy sources according to the current environment load condition, and the distributed energy sources are issued to the device for execution. The operation adjustment of the distributed energy can be carried out according to the plan data issued by the superior system, and the plan data is issued to the device for execution.
The microgrid management module: (1) the micro-grid start and stop control: the micro-grid start/stop instruction of the distributed power generation access control master station or the local background can be received, and start/stop operation of each device and switch of the micro-grid is completed. The micro grid can be started in a grid-connected state, and an off-grid starting (black start) function is supported. (2) And the micro-grid operation mode switching can receive a micro-grid connection/disconnection instruction of the distributed power generation access control master station, and complete the micro-grid connection/disconnection state switching. The operation state switching of the microgrid can realize seamless switching or seam switching according to the configuration of the microgrid equipment. (3) The micro-grid power control can receive a micro-grid power regulation instruction of the upper master station. And adjusting the output of each distributed power generation unit according to the configuration condition of the micro-grid equipment, and realizing power control in different modes. (4) The micro-grid stability control function can realize the combined operation of all distributed power generation units in a micro-grid connection/off-grid operation mode. Through the coordinated control of all distributed power supplies, the voltage and the frequency of the system are stabilized, and the optimized operation of the whole micro-grid system is realized.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (1)
1. A multi-energy information interaction device suitable for use in an integrated energy system, comprising: energy monitoring module, distributed energy control module and microgrid management module, its characterized in that:
the energy monitoring module sends monitoring data to the distributed energy control module and the microgrid management module for controlling various kinds of energy; the distributed energy control module controls the distributed energy by receiving the instruction of the microgrid management module; the energy monitoring module has the functions of distributed power generation system monitoring, energy storage system monitoring, triple energy supply station monitoring, load monitoring and environment monitoring; the distributed power supply statistical analysis function is realized, and the statistics and the measurement are performed on the related data of the new energy operation;
the energy monitoring module comprises the following sub-modules:
distributed power generation system monitoring submodule:
the monitoring system is used for monitoring real-time operation information, faults and alarm information of the fan and the photovoltaic power generation system; monitoring wind power generation: displaying a real-time power generation power curve according to the current power, daily generated energy, total generated energy, wind speed and operation state; photovoltaic power generation monitoring: displaying a real-time power generation power curve by the current power, daily power generation amount, total power generation amount, light irradiance, photovoltaic panel temperature, photovoltaic panel direct-current end voltage and current;
energy storage system monitoring submodule:
the monitoring device is used for monitoring the energy storage bidirectional converter, the battery management system and the battery module; and (3) real-time operation information of the energy storage battery: the voltage, the internal resistance, the pre-estimation performance, the SOC and the alarm information of the single battery are comprehensively monitored; the battery of a specific branch is diagnosed and maintained independently through a monitoring system;
triple energy supply station submodule:
the system is used for monitoring the operation data information of a gas turbine, a boiler and a refrigerating and heating device of a triple energy supply station, carrying out early warning and alarming according to threshold setting, and carrying out statistical analysis on the operation data;
and a load monitoring submodule:
the system is used for monitoring and counting the load in the new energy and providing a basis for the power balance control of the new energy; when new energy is constructed, all loads are classified, during operation, all loads are classified and monitored, and the balance of active load and reactive load of the whole new energy is realized by matching with an on-site load controller;
an environment monitoring submodule:
for integrating environmental monitoring functions, comprising: total radiation, total scattering, wind speed, wind direction, outdoor temperature and humidity and barometric pressure information;
energy statistics analysis submodule:
the system is used for counting and metering related data of new energy operation and visually displaying the data in the form of curves and reports; the method comprises the following steps: displaying new energy operation indexes and measuring electric energy;
and displaying the new energy operation indexes: the system comprises a curve display module, a control module and a control module, wherein the curve display module is used for carrying out curve display on relevant statistical data aiming at new energy operation, and the relevant statistical data curve of the new energy operation comprises a power generation capacity curve, a continuous power generation time curve and a CO2 emission reduction curve; displaying real-time operation data of the new energy, monitoring the operation state of the new energy, displaying the appearances of a photovoltaic power station and energy storage equipment, and displaying the operation data related to the total power generation amount and the operation time of the new energy;
the electric energy metering comprises the following steps: the system is used for accurately measuring the power generation unit and the energy storage unit in the new energy system, is used for marketing, statistics and analysis, and comprises the following components: measuring the generated energy of the new energy, including active electric quantity and reactive electric quantity; calculating power generation efficiency and energy-saving displacement reduction data by combining results predicted by the environmental parameters; performing bidirectional metering on the generated energy of the energy storage system, wherein the bidirectional metering comprises forward active power, reverse active power, forward reactive power and reverse reactive power and is used for analyzing the efficiency of the energy storage system; the method comprises the steps of measuring a load side, and guiding the load side to reasonably and scientifically use electricity by combining the property analysis and the historical data analysis of the load;
the distributed energy control module is used for controlling a distributed power generation operation mode: controlling the running state of the distributed power generation according to the running conditions inside the main network and the new energy;
controlling an energy storage operation mode: carrying out constant power charge and discharge, constant current charge and discharge and constant voltage charge and discharge control on the energy storage system in a grid-connected operation mode, and setting voltage and frequency fixed values of v/f operation of the energy storage system in an off-grid operation mode;
strategy generation and issuing: carrying out strategy adjustment on the distributed energy according to the current environmental load condition, issuing the device for execution, carrying out operation adjustment on the distributed energy according to plan data issued by a superior system, and issuing the device for execution;
the microgrid management module is used for controlling the start and stop of a microgrid: receiving a micro-grid starting/stopping instruction of a distributed power generation access control master station or a local background to complete starting/stopping operations of each device and switch of the micro-grid;
the micro-grid is started in a grid-connected state, and an off-grid starting function is supported; the method comprises the following steps of switching the operation modes of the microgrid, receiving a microgrid connection/disconnection instruction of a distributed generation access control master station, and completing the microgrid connection/disconnection state switching, wherein the microgrid operation state switching realizes seamless switching or seam switching according to the configuration of microgrid equipment; the method comprises the steps of microgrid online power control, namely receiving a microgrid power regulation instruction of a master station at an upper level, regulating the output of each distributed power generation unit according to the configuration condition of microgrid equipment, and realizing power control in different modes; the micro-grid stability control is used for realizing the combined operation of all distributed generation units in a micro-grid connection/off-grid operation mode, and the voltage and the frequency of the system are stabilized through the coordination control of all distributed power supplies, so that the optimized operation of the whole micro-grid system is realized;
further comprising: the system comprises a data acquisition module, a data storage and query module, a permission management module and a log function module; the data acquisition module adopts various communication interfaces, communication protocol protocols and data interaction interfaces with other systems, and has remote control and remote regulation functions; the data storage and query module is used for storing various telemetering, remote signaling and remote pulse data and events to be stored, the sampling interval supports various choices, and the sampling period of second, one minute, five minutes or one hour is configured for storage; the method has the advantages that various stored data and events are queried, the conditional retrieval function is achieved, and the query algorithm is optimized; the method has the functions of data calculation and statistics, and supports statistics of the maximum value, the minimum value and the average value; the authority management module is used for distributing user authority according to function types, and the function types comprise: browsing, parameter setting, remote control execution, strategy setting, operation, monitoring, protection setting, database maintenance, picture report maintenance, historical data maintenance and operation maintenance; the log function module is used for storing equipment starting information, system master-slave switching information, running states of all channels, running states of software modules, digital quantity alarm records, analog quantity alarm records, remote control operation records, parameter modification records, manual replacement records, file operation records and equipment running record logs, providing various queries of log data, allowing a client to browse and retrieve, conveniently querying log data of various equipment, various types and all time periods, and providing the display of query result data in a table mode;
the other system includes: the system comprises a dispatching automation system, a power distribution automation system, a power utilization information acquisition system, an equipment operation and maintenance lean management system, a meteorological information system, a photovoltaic energy management system, an energy storage energy management system and a microgrid energy management system; data transmission is carried out on system data interaction in a file mode, unified data formats meeting a power grid public information model and a service model are agreed, a data matching rule is established, and data security is guaranteed;
the communication interface includes: RS232, 485/422, Ethernet, GPRS/CDMA and wifi;
the communication protocol comprises: the upper communication supports IEC101, 104, CDT, 61850, Modbus, DL/T645, MQTT and COAP protocols, and has the functions of remote signaling, remote measurement, remote control, remote regulation and fixed value setting; the lower communication supports Modbus _ RTU/TCP, DLT645-1997/2007 meter reading protocols, IEC104 and 61850;
the multi-energy information interaction device realizes the local coordination control of the multi-energy system, and simultaneously supports the control strategy issued by the receiving master station to control the related equipment, thereby reducing the equipment number and complexity of the access system.
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