CN106096772A - Energy based on intelligent power and load corporate management system and implementation method - Google Patents
Energy based on intelligent power and load corporate management system and implementation method Download PDFInfo
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Abstract
本发明涉及一种基于智能用电的负荷与能量联合管理系统及实现方法，包括：位于所述主站层的主站通过通信模块与通信层的信息交互终端和设备层中的能效监控终端依次连接；同一层级的所述能效监控终端与用户端之间相互通信。为现场操作人员提供数据信息，制定能量优化策略，规划和管理用户侧电能使用与能量利用，通过调整用户侧的负荷，控制用户自身配备的分布式发电设备的运行，调节储能设备的充放电状态，达到适应电网负荷和电价变化，降低用户的用电最大需量，减少新增负荷设备对配用电设施、输电容量及发电装机容量的影响等目的，以实现节约能源、确保用户用电安全、减少用户电费支出、提高电网稳定性和安全性的目标。
The present invention relates to a load and energy joint management system based on intelligent power consumption and its implementation method, comprising: the master station located at the master station layer communicates with the information interaction terminal of the communication layer and the energy efficiency monitoring terminal of the device layer in turn through a communication module connection; the energy efficiency monitoring terminal and the user terminal at the same level communicate with each other. Provide data information for on-site operators, formulate energy optimization strategies, plan and manage user-side power usage and energy utilization, control the operation of distributed power generation equipment equipped by users themselves, and adjust the charging and discharging of energy storage equipment by adjusting the load on the user side State, to adapt to changes in grid load and electricity prices, reduce the maximum demand for electricity consumption of users, reduce the impact of new load equipment on power distribution facilities, transmission capacity and installed capacity of power generation, in order to achieve energy conservation and ensure power consumption by users The goals of safety, reducing user electricity bills, and improving grid stability and security.
Description
The technical field is as follows:
the invention belongs to the field of intelligent power utilization, and particularly relates to an energy and load combined management system based on intelligent power utilization and an implementation method.
Background
For a long time, the scale of the economic industry of China is continuously and rapidly increased, and the energy consumption is increased year by year. But compared with developed countries, the unit GDP energy consumption of China is still high, and the energy utilization efficiency is low; meanwhile, the per-capita energy occupancy of China is low, and energy consumption needs to depend on imports in a large amount. In addition, with the aggravation of urbanization, the energy demand per capita will be continuously increased, and the emission of greenhouse gases and the occurrence of extreme severe weather such as haze and the like will be further aggravated. In order to relieve the problems of energy shortage and environmental pollution and promote the sustainable and healthy development of economy, scientific technical means are required to be relied on in addition to the requirement of coming out and implementing more regulation policies by government departments. At present, in the fast construction stage of the smart grid, one of three characteristics of the smart grid is 'interactive', so that a higher requirement is provided for the improvement of the interaction level between the power grid and a user, the improvement of the interaction capacity of the power grid actively participates in the peak shaving of the power grid for a client, the operation mode and the operation economy of a power system are optimized, the energy expenditure of the client is reduced, and the integral improvement of the energy utilization efficiency is of great significance. In addition, the continuous promotion of government power demand side management work and the construction of an energy-saving service system of large-scale nationally owned enterprises play a role in propaganda and promotion for the improvement of the energy-saving consciousness of the whole society.
Besides government-provided policy support, energy-saving and energy-efficient work is implemented, and new energy-saving technologies and energy-saving products are required to be continuously developed for support. The common load management control technology is mainly used for industrial users with large power consumption scale and is used for executing peak avoidance or peak shifting instructions when the peak load of a power grid comes. The main body for implementing load management control is a power grid enterprise, a user is in a passive execution status, the intention of the user cannot be reflected, and the positive initiative of the user participating in power grid peak shaving is more difficult to mobilize. Meanwhile, the situation of increasing peak load of power utilization can not be met by means of fundamentally turning to the measures of expanding installed capacity of a power generation side, increasing investment of power transmission and distribution and the like by implementing load management control.
While the load management control is implemented, the investment construction speed of the user-side distributed power supply is also increasing day by day. How to coordinate and control the distributed power supply and apply to the peak shaving of the power grid, a complete set of management system does not exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an energy and load combined management system based on intelligent power utilization and an implementation method thereof, and the combined optimization control of a user side energy system and a load system is realized.
The purpose of the invention is realized by adopting the following technical scheme:
a load and energy combined management system based on intelligent power utilization is connected with an industrial enterprise energy management center (EMS) and a Building Energy Management System (BEMS) through system expansion interfaces respectively and is used for providing data information for field operators and formulating an optimization strategy; characterized in that the system comprises: a master station layer, a communication layer and a device layer; the master station positioned on the master station layer is sequentially connected with the information interaction terminal of the communication layer and the energy efficiency monitoring terminal in the equipment layer through the communication module; the energy efficiency monitoring terminals and the user terminals at the same level are communicated with each other; the user side comprises a load system and an energy system;
the master station is used for analyzing the operation state data, the power consumption data and the power quality data of the user side and generating an optimization strategy so as to realize control management of the user side;
the communication module is used for establishing communication between the master station and an external system, between the master station and a local user system and between the master station and a user side; wherein,
the external system, namely the public internet, is used for realizing the control of the intelligent power load and energy combined management system by the user;
the local user system comprises an industrial enterprise energy management center EMS and a building energy management system BEMS;
the energy efficiency monitoring terminal is used for acquiring data of a user side and respectively controlling the load system and the energy system according to a master station command;
and the information interaction terminal is used for gathering the data acquired by the energy efficiency monitoring terminal and returning the control data of the main station to the energy efficiency monitoring terminal.
Preferably, the master station communicates with the user side through the communication module to realize the unified conversion between a non-standard communication protocol and a standard Modbus TCP protocol, and transmits the monitoring data and the operation state data to the building intelligent power consumption energy management system to complete information interaction.
The master station comprises a real-time information monitoring unit, an optimization strategy unit, an information analysis unit and a linkage control unit; wherein,
the real-time information monitoring unit is used for acquiring data and displaying the analysis result of the acquired data in a chart form;
the optimization strategy unit is used for generating a power utilization strategy for reducing the maximum demand of power utilization and the power utilization expenditure according to the analysis result of the collected data, the user power utilization file data, the historical load data and the power grid price information, and the power utilization strategy is selected and called by the user;
the analysis unit is used for analyzing the acquired data by using professional analysis software to obtain an analysis result of the acquired data;
the linkage control unit is used for generating a linkage control command according to the user customized operation or the actual operation result by combining the optimization strategy generated by the main station, and transmitting the command to the user side;
the communication module comprises an Ethernet communication unit, an RS485 communication unit, a protocol adaptation unit and an external access unit; wherein,
the Ethernet communication unit is used for realizing the connection of the master station with the information interaction terminal, the industrial enterprise energy management center EMS and the building energy management system BEMS through the Ethernet local area network and receiving the power information data through the public Internet;
the protocol adaptation unit is used for realizing the conversion between the energy efficiency special protocol and the protocols of the systems when the energy efficiency monitoring terminal is in data communication with the load system and the energy system;
the external system access unit is used for carrying out data communication with an external system through a local area network or the Internet; and the own protocol comprises Modbus and OPC.
Preferably, the information interaction terminal comprises a data summarizing module, a data processing module and a sending module; wherein,
the data summarization unit is used for receiving the data of the energy efficiency monitoring terminal and storing the data in a centralized manner;
the data processing unit is used for analyzing and storing the data of the energy efficiency monitoring terminal according to a special communication protocol of the energy efficiency monitoring system;
and the sending unit is used for uploading data to the main station in real time or at regular time and receiving the data of the main station.
Preferably, the energy efficiency monitoring terminal comprises a data acquisition unit, a data storage unit and a communication unit; wherein,
the data acquisition unit is used for acquiring operation state data, energy consumption data and electric energy quality data of a user side;
the data storage unit is used for storing the data acquired by the data acquisition module;
the communication unit is used for the energy efficiency monitoring terminal to upload the acquired data regularly or actively according to the command of the information interaction terminal and receive the data sent by the information interaction terminal;
the user side comprises a control unit, a grid-connected operation unit and an island operation unit; wherein,
the control unit is used for realizing operation regulation and control of the energy system and the load system;
the grid-connected operation unit means that a power distribution and utilization system at a user side and a large power grid are in a connection state, and energy exchange exists between the power distribution and utilization system and the large power grid;
the island operation unit means that a power distribution and utilization system at a user side and a large power grid are in an isolated state, and energy exchange does not exist between the power distribution and utilization system and the large power grid;
and the large power grid is connected with a power distribution bus inside the user side through a grid-connected control device.
Preferably, the energy efficiency monitoring terminal is connected with the grid-connected control device through a load system and an energy system;
the load system comprises an illumination subsystem, a double-storage/central air-conditioning subsystem, a fan subsystem, a water pump subsystem and an electric automobile charging subsystem;
the energy system comprises a photovoltaic power generation subsystem, a wind power generation subsystem and an energy storage subsystem;
the grid-connected control device is used for connecting the protocol adaptation unit and the external system access unit and can control the grid-connected/off-grid operation of the external unit;
the load system and the energy system are arranged in a local distribution network, and the load system and the energy system comprise:
and the lighting subsystem, the double-storage/central air-conditioning subsystem, the fan subsystem, the water pump subsystem and the electric vehicle charging subsystem are connected with the energy efficiency monitoring terminal in a one-to-one correspondence manner, and the photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem are connected with the energy efficiency monitoring terminal in a one-to-one correspondence manner.
The invention provides a load and energy combined management implementation method based on intelligent power utilization, which comprises the following steps:
(1) collecting data;
(2) data interaction;
(3) analyzing data and making an optimization strategy;
(4) and executing the control of the optimization strategy on the system, acquiring an optimization result and evaluating the optimization result.
Preferably, the data acquisition in the step (1) includes that the energy efficiency monitoring terminal uploads data to the information interaction terminal according to an upload cycle set by the master station while acquiring data of the energy system and the load system of the user side at regular time, and the data are sent to the master station through the information interaction terminal;
and when an emergency occurs, the energy efficiency monitoring terminal uploads data to the main station through the information interaction terminal.
Preferably, in the step (2), the data interaction specifically includes that the master station interacts information with the user side through an energy interface and/or a load interface;
the energy interface is used for scheduling the electric energy generated by the energy system, supporting plug and play of a distributed power system and an energy storage system of a user side, and simultaneously supporting scheduling use of cold and heat generated by the energy system;
and the load interface is used for connecting a user side load system and carrying out information interaction with each energy utilization system or equipment.
Preferably, the step (3) specifically includes: the master station analyzes the collected data, the power grid information data and the user behavior data and formulates an optimization strategy; the method comprises a load balancing strategy, an equipment operation strategy, a distributed power supply grid-connected strategy, an electric vehicle charging strategy and an energy storage system operation strategy; wherein:
the load balancing strategy is used for analyzing the running state of each energy-using device or system in a load system to which the client belongs in real time according to the preset maximum power demand of the client, and if the running total power of all the energy-using devices or systems exceeds the maximum power demand of the power, shutting down part of the energy-using devices, reducing the running power of part of the energy-using devices or balancing part of energy demands through a local distributed power supply or an energy storage system;
the equipment operation strategy is used for combining the power grid enterprise electricity price information and the weather forecast information and adjusting the operation of energy utilization equipment of the environmental parameters by controlling the double-storage/central air conditioner; or the system automatically sends out an alarm signal to prompt delayed start of energy utilization equipment when the energy utilization system or equipment with a larger load requirement is about to access the system according to the real-time load data and the maximum power consumption preset by the client;
the distributed power supply grid-connected strategy is used for controlling the on-off of a distributed power supply grid-connected switch according to the actual operation requirement of the system and the operation state of the distributed power supply; the grid-connected switch is positioned between the distributed power supply and the client local power distribution network;
the electric vehicle charging strategy is used for controlling an electric vehicle charging facility to charge the electric vehicle under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of local energy utilization equipment is low;
the energy storage system operation strategy is used for controlling the energy storage system to charge under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of a local energy utilization system or equipment is low; and under the condition that the running power of a local energy utilization system or equipment is larger and exceeds the preset maximum power utilization demand of a user, controlling the energy storage system to discharge.
Preferably, the step (4) of executing the optimization strategy comprises the steps of logging in a master station Web server by a user, checking the strategy, selecting a corresponding energy optimization strategy and executing the strategy; or the user customizes an energy optimization strategy in advance, and the master station executes the optimization strategy according to the system running condition, specifically: the master station generates a control command according to the optimization strategy, and transmits the control command to the user side, and the user side controls the load system or the energy system in a linkage control mode; namely, the control is carried out on two or more systems at the same time, and the control command is executed;
the execution mode of the optimization strategy comprises mechanical execution and automatic execution;
the mechanical execution is that the master station executes according to a user instruction;
the automatic execution means that the main station automatically executes an optimization strategy according to the historical behavior habits or user settings of the user and by combining the data acquired by the system;
the step (4) of evaluating the optimization comprises: and the master station compares the historical data with the system data after the strategy is executed, obtains an evaluation result through an effect evaluation algorithm, and displays the evaluation result on the master station server.
Compared with the closest prior art, the invention has the following beneficial effects:
1. the system has flexible networking communication and protocol adaptation functions, and can conveniently regulate and control the running states of various energy utilization systems or equipment, distributed power supply systems or equipment, energy storage systems and the like;
2. according to the system, the client can know the basic energy utilization condition of the client through professional data analysis software, and simultaneously selects an energy utilization optimization strategy which is more economical and reasonable, so that the aim of effectively reducing the maximum power consumption requirement of a user is fulfilled, the energy utilization efficiency is improved, and the energy expenditure is reduced.
Drawings
FIG. 1 is a combined management system and an implementation method for loads and energy based on intelligent power utilization, provided by the invention;
FIG. 2 is a physical architecture diagram of the intelligent power consumption energy and load combined management system provided by the present invention;
FIG. 3 is a functional architecture diagram of the intelligent combined energy and load management system provided by the present invention;
fig. 4 is a flowchart of a load and energy joint management implementation method based on intelligent power consumption provided by the invention.
The specific implementation mode is as follows:
the load and energy combined management system is respectively connected with an industrial enterprise energy management center EMS and a building energy management system BEMS through system expansion interfaces and used for providing data information (information such as power supply and utilization, electric energy quality, running states of subsystems, power utilization and the like of a whole house) for field operators, and an optimization strategy is formulated through analysis and prediction by utilizing data acquired by user side terminal equipment. The strategy is used for planning and managing electric energy use and energy utilization of a user side, the operation of distributed power generation equipment equipped by the user is controlled by adjusting the load of the user side, and the charging and discharging state of energy storage equipment is adjusted, so that the purposes of adapting to the load and the price change of a power grid, reducing the maximum demand of power consumption of the user, reducing the influence of newly added load equipment on power distribution and utilization facilities, transmission capacity and power generation installed capacity and the like are achieved, and the aims of saving energy, ensuring the power consumption safety of the user, reducing the power cost of the user, and improving the stability and the safety of the power grid are fulfilled.
As shown in fig. 3, a functional architecture diagram of an intelligent power consumption energy and load combined management system provided in an embodiment of the present invention includes: a master station layer, a communication layer and a device layer; the main station layer mainly comprises a main station and a related system expansion interface. The communication layer mainly refers to a related communication infrastructure utilized by information interaction between the master station and the energy-using user side; the communication gateway is used for uniformly converting the non-standard communication protocols used by the subsystems into standard Modbus TCP protocols, and transmitting monitoring data and the equipment operation state to the building intelligent electricity energy management system; the equipment layer mainly refers to specific energy utilization equipment or system, a distributed power generation and energy storage system and a related energy efficiency monitoring terminal; the distributed power generation and energy storage system is directly connected with the energy utilization equipment or system through a power distribution bus inside the energy utilization user, and meanwhile, an external large power grid is connected with the power distribution bus inside the user side through a grid-connected control device.
As shown in fig. 1, a master station located in the master station layer is sequentially connected with an information interaction terminal in the communication layer and an energy efficiency monitoring terminal in the device layer through a communication module; the energy efficiency monitoring terminals and the user terminals at the same level are communicated with each other; the user side comprises a load system and an energy system.
The master station is used for analyzing the operation state data, the power consumption data and the power quality data of the user side and generating an optimization strategy so as to realize control management of the user side;
the communication module is used for establishing communication between the master station and the external system, between the local user system and between the master station and the user side; wherein,
the external system is the public internet, so that the user can control the intelligent power load and energy combined management system;
the local user system comprises an industrial enterprise energy management center EMS and a building energy management system BEMS;
the energy efficiency monitoring terminal is used for acquiring data of the user side and respectively controlling the load system and the energy system according to the master station command;
and the information interaction terminal is used for gathering the data acquired by the energy efficiency monitoring terminal and returning the control data of the main station to the energy efficiency monitoring terminal.
The intelligent building electricity consumption energy management system comprises a main station, a user side and a communication module, wherein the main station and the user side communicate through the communication module to realize the unified conversion of a non-standard communication protocol and a standard Modbus TCP protocol, and transmit monitoring data and operation state data to the intelligent building electricity consumption energy management system to finish information interaction.
The master station comprises a real-time information monitoring unit, an optimization strategy unit, an information analysis unit and a linkage control unit; wherein,
the real-time information monitoring unit is used for acquiring data and displaying the analysis result of the acquired data in a chart form;
the optimization strategy unit is used for generating a power utilization strategy for reducing the maximum demand of power utilization and the power utilization expenditure according to the analysis result of the collected data, the user power utilization file data, the historical load data and the power grid price information, and the power utilization strategy is selected and called by the user;
the analysis unit is used for analyzing the acquired data by using professional analysis software to obtain an analysis result of the acquired data;
and the linkage control unit is used for generating a linkage control command according to the user customized operation or actual operation result by combining the optimization strategy generated by the main station, and transmitting the command to the user side.
The communication module comprises an Ethernet communication unit, an RS485 communication unit, a protocol adaptation unit and an external access unit; wherein,
the Ethernet communication unit is used for realizing the connection of the master station with the information interaction terminal, the industrial enterprise energy management center EMS and the building energy management system BEMS through the Ethernet local area network and receiving the power information data through the public Internet;
the protocol adaptation unit is used for realizing the conversion between the energy efficiency special protocol and the own protocols of the systems when the energy efficiency monitoring terminal is in data communication with the load system and the energy system;
an external system access unit for performing data communication with an external system through a local area network or the internet; and the own protocol comprises Modbus and OPC.
The information interaction terminal comprises a data summarizing module, a data processing module and a sending module; wherein,
the data summarization unit is used for receiving the data of the energy efficiency monitoring terminal and storing the data in a centralized manner;
the data processing unit is used for analyzing and storing the data of the energy efficiency monitoring terminal according to a special communication protocol of the energy efficiency monitoring system;
and the sending unit is used for uploading data to the master station in real time or at regular time and receiving the data of the master station.
The energy efficiency monitoring terminal comprises a data acquisition unit, a data storage unit and a communication unit; wherein,
the acquisition unit is used for acquiring the operation state data, the energy consumption data and the electric energy quality data of the user side;
the data storage unit is used for storing the data acquired by the data acquisition module;
and the communication unit is used for the energy efficiency monitoring terminal to regularly or actively upload the acquired data according to the command of the information interaction terminal and receive the data sent by the information interaction terminal.
The user side comprises a control unit, a grid-connected operation unit and an island operation unit; wherein,
the control unit is used for realizing operation regulation and control of the energy system and the load system;
the grid-connected operation unit means that a power distribution and utilization system at a user side and a large power grid are in a connection state, and energy exchange exists between the power distribution and utilization system and the large power grid;
the island operation unit means that a power distribution and utilization system at a user side and a large power grid are in an isolated state, and energy exchange does not exist between the power distribution and utilization system and the large power grid.
And the large power grid is connected with a power distribution bus inside the user side through the grid-connected control device.
As shown in fig. 2, the energy efficiency monitoring terminal is connected with the grid-connected control device through a load system and an energy system;
the load system comprises an illumination subsystem, a double-storage/central air-conditioning subsystem, a fan subsystem, a water pump subsystem and an electric automobile charging subsystem;
the energy system comprises a photovoltaic power generation subsystem, a wind power generation subsystem and an energy storage subsystem;
the grid-connected control device is used for connecting the protocol adaptation unit and the external system access unit and can control grid-connected/off-grid operation of the external unit.
The load system and the energy system are arranged in a local distribution network, and the load system and the energy system comprise:
the lighting subsystem, the double-storage/central air-conditioning subsystem, the fan subsystem, the water pump subsystem and the electric vehicle charging subsystem are connected with the energy efficiency monitoring terminal in a one-to-one correspondence manner, and the photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem
As shown in fig. 4, a method for implementing load and energy joint management based on intelligent power utilization includes the following steps:
(1) collecting data;
the data acquisition in the step (1) comprises the steps that the energy efficiency monitoring terminal uploads data to the information interaction terminal according to an uploading period set by the main station while acquiring data of an energy system and a load system of a user side at regular time, and the data are sent to the main station through the information interaction terminal;
and when an emergency occurs, the energy efficiency monitoring terminal uploads data to the main station through the information interaction terminal.
(2) Data interaction;
in the step (2), the data interaction specifically comprises that the master station interacts information with the user side through an energy interface and/or a load interface;
the energy interface is used for scheduling the electric energy generated by the energy system, supporting plug and play of a distributed power system and an energy storage system of a user side, and simultaneously supporting scheduling use of cold and heat generated by the energy system;
and the load interface is used for connecting a user side load system and carrying out information interaction with each energy utilization system or equipment.
(3) Analyzing data and making an optimization strategy;
the method specifically comprises the following steps: the master station analyzes the collected data, the power grid information data and the user behavior data and formulates an optimization strategy; the method comprises a load balancing strategy, an equipment operation strategy, a distributed power supply grid-connected strategy, an electric vehicle charging strategy and an energy storage system operation strategy; wherein:
the load balancing strategy is used for analyzing the running state of each energy-using device or system in a load system to which the client belongs in real time according to the preset maximum power demand of the client, and if the running total power of all the energy-using devices or systems exceeds the maximum power demand of the power, shutting down part of the energy-using devices, reducing the running power of part of the energy-using devices or balancing part of energy demands through a local distributed power supply or an energy storage system;
the equipment operation strategy is used for combining the power grid enterprise electricity price information and the weather forecast information and adjusting the operation of energy utilization equipment of the environmental parameters by controlling the double-storage/central air conditioner; or the system automatically sends out an alarm signal to prompt delayed start of energy utilization equipment when the energy utilization system or equipment with a larger load requirement is about to access the system according to the real-time load data and the maximum power consumption preset by the client;
the distributed power supply grid-connected strategy is used for controlling the on-off of a distributed power supply grid-connected switch according to the actual operation requirement of the system and the operation state of the distributed power supply; the grid-connected switch is positioned between the distributed power supply and the client local power distribution network;
the electric vehicle charging strategy is used for controlling an electric vehicle charging facility to charge the electric vehicle under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of local energy utilization equipment is low;
the energy storage system operation strategy is used for controlling the energy storage system to charge under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of a local energy utilization system or equipment is low; and under the condition that the running power of a local energy utilization system or equipment is larger and exceeds the preset maximum power utilization demand of a user, controlling the energy storage system to discharge.
The optimization strategy also comprises a master control target which is self-defined according to the actual situation and is used for evaluating the control result.
(4) And executing the control of the optimization strategy on the system, acquiring an optimization result and evaluating the optimization result. Step (4) the step of executing the optimization strategy comprises the steps that a user logs in a master station Web server, checks the strategy, selects a corresponding energy optimization strategy and executes the strategy; or the user customizes an energy optimization strategy in advance, and the master station executes the optimization strategy according to the system running condition, specifically: the master station generates a control command according to the optimization strategy, and transmits the control command to the user side, and the user side controls the load system or the energy system in a linkage control mode; that is, two or more systems are controlled at the same time, and a control command is executed.
The execution mode of the optimization strategy comprises mechanical execution and automatic execution;
the mechanical execution is that the master station executes according to a user instruction;
and the automatic execution means that the main station automatically executes an optimization strategy according to the historical behavior habits or user settings of the user and by combining the data acquired by the system.
The step (4) of evaluating the optimization comprises: and the master station compares the historical data with the system data after the strategy is executed, obtains an evaluation result through an effect evaluation algorithm, and displays the evaluation result on the master station server.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A load and energy combined management system based on intelligent power utilization is connected with an industrial enterprise energy management center (EMS) and a Building Energy Management System (BEMS) through system expansion interfaces respectively and is used for providing data information for field operators and formulating an optimization strategy; characterized in that the system comprises: a master station layer, a communication layer and a device layer; the master station positioned on the master station layer is sequentially connected with the information interaction terminal of the communication layer and the energy efficiency monitoring terminal in the equipment layer through the communication module; the energy efficiency monitoring terminals and the user terminals at the same level are communicated with each other; the user side comprises a load system and an energy system;
the master station is used for analyzing the operation state data, the power consumption data and the power quality data of the user side and generating an optimization strategy so as to realize control management of the user side;
the communication module is used for establishing communication between the master station and an external system, between the master station and a local user system and between the master station and a user side; wherein,
the external system, namely the public internet, is used for realizing the control of the intelligent power load and energy combined management system by the user;
the local user system comprises an industrial enterprise energy management center EMS and a building energy management system BEMS;
the energy efficiency monitoring terminal is used for acquiring data of a user side and respectively controlling the load system and the energy system according to a master station command;
and the information interaction terminal is used for gathering the data acquired by the energy efficiency monitoring terminal and returning the control data of the main station to the energy efficiency monitoring terminal.
2. The system of claim 1, wherein the master station communicates with the user side through a communication module to realize the unified conversion between a non-standard communication protocol and a standard ModbusTCP protocol, and transmits monitoring data and operating state data to the building intelligent electricity consumption energy management system to complete information interaction;
the master station comprises a real-time information monitoring unit, an optimization strategy unit, an information analysis unit and a linkage control unit; wherein,
the real-time information monitoring unit is used for acquiring data and displaying the analysis result of the acquired data in a chart form;
the optimization strategy unit is used for generating a power utilization strategy for reducing the maximum demand of power utilization and the power utilization expenditure according to the analysis result of the collected data, the user power utilization file data, the historical load data and the power grid price information, and the power utilization strategy is selected and called by the user;
the analysis unit is used for analyzing the acquired data by using professional analysis software to obtain an analysis result of the acquired data;
the linkage control unit is used for generating a linkage control command according to the user customized operation or the actual operation result by combining the optimization strategy generated by the main station, and transmitting the command to the user side;
the communication module comprises an Ethernet communication unit, an RS485 communication unit, a protocol adaptation unit and an external access unit; wherein,
the Ethernet communication unit is used for realizing the connection of the master station with the information interaction terminal, the industrial enterprise energy management center EMS and the building energy management system BEMS through the Ethernet local area network and receiving the power information data through the public Internet;
the protocol adaptation unit is used for realizing the conversion between the energy efficiency special protocol and the protocols of the systems when the energy efficiency monitoring terminal is in data communication with the load system and the energy system;
the external system access unit is used for carrying out data communication with an external system through a local area network or the Internet; and the own protocol comprises Modbus and OPC.
3. The system of claim 1, wherein the information interaction terminal comprises a data summarization module, a data processing module and a sending module; wherein,
the data summarization unit is used for receiving the data of the energy efficiency monitoring terminal and storing the data in a centralized manner;
the data processing unit is used for analyzing and storing the data of the energy efficiency monitoring terminal according to a special communication protocol of the energy efficiency monitoring system;
and the sending unit is used for uploading data to the main station in real time or at regular time and receiving the data of the main station.
4. The system of claim 1, wherein the energy efficiency monitoring terminal comprises a data acquisition unit, a data storage unit and a communication unit; wherein,
the data acquisition unit is used for acquiring operation state data, energy consumption data and electric energy quality data of a user side;
the data storage unit is used for storing the data acquired by the data acquisition module;
the communication unit is used for the energy efficiency monitoring terminal to upload the acquired data regularly or actively according to the command of the information interaction terminal and receive the data sent by the information interaction terminal;
the user side comprises a control unit, a grid-connected operation unit and an island operation unit; wherein,
the control unit is used for realizing operation regulation and control of the energy system and the load system;
the grid-connected operation unit means that a power distribution and utilization system at a user side and a large power grid are in a connection state, and energy exchange exists between the power distribution and utilization system and the large power grid;
the island operation unit means that a power distribution and utilization system at a user side and a large power grid are in an isolated state, and energy exchange does not exist between the power distribution and utilization system and the large power grid;
and the large power grid is connected with a power distribution bus inside the user side through a grid-connected control device.
5. The system of claim 1, wherein the energy efficiency monitoring terminal is connected with a grid-connected control device through a load system and an energy system;
the load system comprises an illumination subsystem, a double-storage/central air-conditioning subsystem, a fan subsystem, a water pump subsystem and an electric automobile charging subsystem;
the energy system comprises a photovoltaic power generation subsystem, a wind power generation subsystem and an energy storage subsystem;
the grid-connected control device is used for connecting the protocol adaptation unit and the external system access unit and can control the grid-connected/off-grid operation of the external unit;
the load system and the energy system are arranged in a local distribution network, and the load system and the energy system comprise:
and the lighting subsystem, the double-storage/central air-conditioning subsystem, the fan subsystem, the water pump subsystem and the electric vehicle charging subsystem are connected with the energy efficiency monitoring terminals in a one-to-one correspondence manner, and the photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem are connected with the energy efficiency monitoring terminals in a one-to-one correspondence manner.
6. A load and energy combined management implementation method based on intelligent power utilization is characterized by comprising the following steps:
(1) collecting data;
(2) data interaction;
(3) analyzing data and making an optimization strategy;
(4) and executing the control of the optimization strategy on the system, acquiring an optimization result and evaluating the optimization result.
7. The method of claim 6, wherein the data acquisition in step (1) includes that the energy efficiency monitoring terminal uploads data to the information interaction terminal according to an upload cycle set by the master station while acquiring data of the energy system and the load system of the user side at regular time, and the data are sent to the master station via the information interaction terminal;
and when an emergency occurs, the energy efficiency monitoring terminal uploads data to the main station through the information interaction terminal.
8. The method of claim 6, wherein in the step (2), the data interaction specifically includes the master station interacting with the client terminal through an energy interface and/or a load interface;
the energy interface is used for scheduling the electric energy generated by the energy system, supporting plug and play of a distributed power system and an energy storage system of a user side, and simultaneously supporting scheduling use of cold and heat generated by the energy system;
and the load interface is used for connecting a user side load system and carrying out information interaction with each energy utilization system or equipment.
9. The method according to claim 6, wherein the step (3) specifically comprises: the master station analyzes the collected data, the power grid information data and the user behavior data and formulates an optimization strategy; the method comprises a load balancing strategy, an equipment operation strategy, a distributed power supply grid-connected strategy, an electric vehicle charging strategy and an energy storage system operation strategy; wherein:
the load balancing strategy is used for analyzing the running state of each energy-using device or system in a load system to which the client belongs in real time according to the preset maximum power demand of the client, and if the running total power of all the energy-using devices or systems exceeds the maximum power demand of the power, shutting down part of the energy-using devices, reducing the running power of part of the energy-using devices or balancing part of energy demands through a local distributed power supply or an energy storage system;
the equipment operation strategy is used for combining the power grid enterprise electricity price information and the weather forecast information and adjusting the operation of energy utilization equipment of the environmental parameters by controlling the double-storage/central air conditioner; or the system automatically sends out an alarm signal to prompt delayed start of energy utilization equipment when the energy utilization system or equipment with a larger load requirement is about to access the system according to the real-time load data and the maximum power consumption preset by the client;
the distributed power supply grid-connected strategy is used for controlling the on-off of a distributed power supply grid-connected switch according to the actual operation requirement of the system and the operation state of the distributed power supply; the grid-connected switch is positioned between the distributed power supply and the client local power distribution network;
the electric vehicle charging strategy is used for controlling an electric vehicle charging facility to charge the electric vehicle under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of local energy utilization equipment is low;
the energy storage system operation strategy is used for controlling the energy storage system to charge under the conditions that the power generation capacity of the distributed power supply is large and the load utilization rate of a local energy utilization system or equipment is low; and under the condition that the running power of a local energy utilization system or equipment is larger and exceeds the preset maximum power utilization demand of a user, controlling the energy storage system to discharge.
10. The method of claim 6, wherein the step (4) of executing the optimization strategy comprises the steps of logging in a Web server of the main station by a user, checking the strategy, selecting a corresponding energy optimization strategy and executing the strategy; or the user customizes an energy optimization strategy in advance, and the master station executes the optimization strategy according to the system running condition, specifically: the master station generates a control command according to the optimization strategy, and transmits the control command to the user side, and the user side controls the load system or the energy system in a linkage control mode; namely, the control is carried out on two or more systems at the same time, and the control command is executed;
the execution mode of the optimization strategy comprises mechanical execution and automatic execution;
the mechanical execution is that the master station executes according to a user instruction;
the automatic execution means that the main station automatically executes an optimization strategy according to the historical behavior habits or user settings of the user and by combining the data acquired by the system;
the step (4) of evaluating the optimization comprises: and the master station compares the historical data with the system data after the strategy is executed, obtains an evaluation result through an effect evaluation algorithm, and displays the evaluation result on the master station server.
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