An intelligent air conditioning control network suitable for load aggregation scheduling

Abstract

The present invention discloses an intelligent air conditioning control network suitable for load aggregation scheduling, including an intelligent air conditioning controller, and one or more of a central air conditioning control subnetwork, a multi-split air conditioning control subnetwork, and a distributed air conditioning control subnetwork; the control object of the central air conditioning control subnetwork is the air conditioning host, the control object of the multi-split air conditioning control subnetwork is the multi-split outdoor unit, and the control object of the distributed air conditioning control subnetwork is the indoor unit. Each subnetwork realizes information interaction with the intelligent air conditioning controller through its own smart energy interaction module, mainly completing the reporting of air conditioning load information and executing the specified load removal instruction. The intelligent air conditioning control network suitable for load aggregation scheduling provided in this case, as a part of the power load in the new intelligent power grid dispatching automation system, is mainly used to cooperate with the power station air conditioning load aggregation dispatching system to realize air conditioning load management.

Description

Technical Field

[0001] The invention relates to an intelligent air-conditioning control network suitable for load aggregation dispatching, belonging to a monitoring, analysis, dispatching and control technology for electric power loads in a new intelligent power grid dispatching automation system. Background Art

[0002] The development of China's modernization process and the revolution of power technology are accompanied by the reform of the modern power system. Grid dispatching automation should be used to help electricity enter the market in response to the needs of grid development. Under this environment, grid technology is developing more rapidly and maturely, the level of intelligence of power dispatching master station systems is getting higher and higher, intelligent technologies are emerging in an endless stream, and dispatching automation and substation digital systems are continuously updated. The new smart grid dispatching automation system can adopt a provincial-local integrated network model. This integrated model should have obvious advantages in intelligence over the existing hierarchical dispatching automation structure model. It is necessary to study the new smart grid dispatching automation system from the aspects of software and hardware configuration, operation mode, master station requirements, and dispatching communication function upgrades to meet the advantages of intelligence.

[0003] The Electric Power D5000 system is a new type of intelligent grid dispatching automation system proposed under this background. The Electric Power D5000 system platform can realize real-time monitoring, online stability analysis, dispatching business management and other functions in the operation of the power grid through power middleware, dispatching plan applications and dispatching management application systems. The system can monitor, analyze, dispatch and control power grid equipment and power loads, improve the intelligence level of the power grid, optimize the operation and energy distribution of the power grid, and improve the safety and reliability of the power system.

[0004] The building environment where the air-conditioning load is located has heat storage capacity and huge demand response potential. The reasonable exploration and dispatch of the air-conditioning load can improve the power system's ability to accept intermittent new energy, alleviate the imbalance between supply and demand, improve the comprehensive operational efficiency of the power system, and achieve optimal resource allocation. Therefore, the air-conditioning load is aggregated and dispatched as part of the power load in the power D5000 system, which will further improve the intelligence level of the power grid, optimize the operation and energy distribution of the power grid, and improve the safety and reliability of the power system. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an intelligent air-conditioning control network suitable for load aggregation scheduling. As a part of the power load in the new intelligent grid dispatching automation system, it is mainly used to cooperate with the power station air-conditioning load aggregation dispatching system to realize air-conditioning load management, so that the scope of load aggregation scheduling is wider, further improving the intelligence level of the power grid, optimizing the operation and energy distribution of the power grid, and improving the safety and reliability of the power system.

[0006] Technical solution: To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] An intelligent air conditioning control network suitable for load aggregation scheduling includes an intelligent air conditioning controller and one or more of a central air conditioning control subnetwork, a multi-split air conditioning control subnetwork and a distributed air conditioning control subnetwork;

[0008] The control object of the central air conditioning control sub-network is the air conditioning host, which includes a chiller and an air-cooled heat pump. The central air conditioning control sub-network realizes information interaction with the intelligent air conditioning controller through the smart energy interaction module I; the smart energy interaction module I sends the received specified load removal instruction to the air conditioning communication module, and the air conditioning communication module controls the start and stop state and operating parameters of the air conditioning host based on the set value and current value of the chilled water outlet temperature, the set value and current value of the chilled water return temperature, and the current start and stop state of the air conditioning host to complete the removal of the specified load; the central air conditioning control sub-network collects the real-time operating parameters of the central air conditioning through the Internet of Things smart meter I and uploads them to the smart energy interaction module I, and the central air conditioning control sub-network collects the real-time temperature and humidity values ​​of the environment through the wireless temperature and humidity sensor and uploads them to the smart energy interaction module I;

[0009] The control object of the multi-split air conditioning control sub-network is the multi-split outdoor unit. The multi-split air conditioning control sub-network realizes information interaction with the intelligent air conditioning controller through the smart energy interaction module II; the smart energy interaction module II sends the received specified load removal instruction to the multi-split air conditioning controller, and the multi-split air conditioning controller controls the start and stop status and operating parameters of each outdoor unit based on the current operating mode and set temperature to complete the removal of the specified load; the multi-split air conditioning control sub-network collects the real-time operating parameters of the multi-split air conditioner through the Internet of Things smart meter II and uploads them to the smart energy interaction module II;

[0010] The control object of the distributed air-conditioning control subnetwork is the indoor unit. The distributed air-conditioning control subnetwork realizes information interaction with the intelligent air-conditioning controller through the smart energy interaction module III; the smart energy interaction module III is used to receive the specified load removal instruction, and control the start and stop status and operating parameters of each indoor unit through infrared control to complete the removal of the specified load; the distributed air-conditioning control subnetwork collects the real-time operating parameters of the distributed air-conditioning through the distributed air-conditioning control gateway and uploads them to the smart energy interaction module III.

[0011] The intelligent air conditioning control network provided in this case is used to realize air conditioning load management, and adopts a modular structure of the main network and subnets; the intelligent air conditioning controller is the hub for the intelligent air conditioning control network to be networked with the external network, and is mainly used to report air conditioning load information, receive and issue air conditioning control instructions, monitor and manage the entire intelligent air conditioning control network, and facilitate the joining and exiting of the entire intelligent air conditioning control network, and is convenient for operation and maintenance and expansion; the smart energy interactive module is the hub for the subnet and the intelligent air conditioning controller to be networked, and is mainly used to report air conditioning load information, receive and issue air conditioning control instructions, monitor and manage each subnet, and facilitate the joining and exiting of each subnet, and is convenient for operation and maintenance and expansion. Different types of air conditioners have different structures, working principles, and working methods. This case does not adopt a one-size-fits-all approach, but designs three different subnets for different air conditioning types and working scenarios (if new scenarios appear, new subnets can be added by referring to the method of this case), and adopts different control objects and control methods to achieve the goal of "observable, measurable, adjustable and controllable" air conditioning load. The design of the entire intelligent air-conditioning control network has limited requirements on the software and hardware characteristics of the substation air-conditioning load aggregation dispatching system, and can meet the data requirements of the substation air-conditioning load aggregation dispatching system, and can complete the air-conditioning control command tasks of the substation air-conditioning load aggregation dispatching system.

[0012] The intelligent air conditioning control network provided in this case is mainly used to cooperate with the power station air conditioning load aggregation dispatching system to realize air conditioning load management. Therefore, it is necessary to optimize the communication method between devices to achieve the control rate requirements and communication security requirements above the minute level. The design of the communication method in this case mainly considers the following basic principles: ① When the distance between each monitoring device and the smart energy interactive module is relatively close and the communication cable can be arranged in a relatively short time, they should be connected as much as possible through limited communication methods; ② If each monitoring device and the smart energy interactive module have existing channels such as bridges, and the channels are unobstructed and the construction difficulty is small, they should be connected as much as possible through limited communication methods; ③ If there is no channel between some monitoring devices and the smart energy interactive module, or the channel is blocked, wireless communication methods such as 4G can be considered for connection; ④ If it is not convenient to lay cables, such as if it has a great impact on the user's business and damages the original building, wireless communication methods such as 4G can be considered for connection. The specific communication method design is as follows.

[0013] Specifically, in the central air-conditioning control subnetwork, the Internet of Things smart meters I first perform internal networking through the RS485 bus or Lora wireless. After the internal networking is completed, information is exchanged with the smart energy interaction module I through the RS485 bus or the intelligent communication unit; the wireless temperature and humidity sensor first transmits the collected data to the temperature and humidity cloud box through Lora or Zigbee wireless, and then the temperature and humidity cloud box exchanges information with the smart energy interaction module I through the RS485 bus or the intelligent communication unit; the air-conditioning communication module exchanges information with the smart energy interaction module I through the RS485 bus; the smart energy interaction module I exchanges information with the smart air-conditioning controller through wireless communication.

[0014] Specifically, in the multi-split air-conditioning control sub-network, the multi-split air-conditioners are grouped according to areas or floors. The multi-split air-conditioning controller and the Internet of Things smart meter II in each group are first internally networked through the RS485 bus or Lora wireless. After the internal networking is completed, information is exchanged with the smart energy interaction module II through the RS485 bus or the smart communication unit; the smart energy interaction module II exchanges information with the smart air-conditioning controller through wireless communication.

[0015] Specifically, in the distributed air-conditioning control sub-network, the indoor unit realizes infrared control through a single-phase smart socket or an air-conditioning controller, and the single-phase smart socket and the air-conditioning controller exchange information with the distributed air-conditioning control gateway through Lora wireless or 4G wireless; the distributed air-conditioning control network exchanges information with the smart energy interaction module III through the RS485 bus or the smart communication unit; the smart energy interaction module III exchanges information with the smart air-conditioning controller through wireless communication.

[0016] The intelligent communication units transmit data wirelessly, and the intelligent communication units and other devices transmit data wirelessly via the RS485 bus.

[0017] Specifically, in the central air-conditioning control subnetwork, each air-conditioning host is configured with a smart energy interaction module I; in each group of the multi-split air-conditioning control subnetwork, all outdoor machine refrigeration pipes are connected first, and then the master-slave machine settings are performed, and the slave outdoor units are driven to work together by controlling the master outdoor unit to form a refrigeration circuit, and each refrigeration circuit is configured with a smart energy interaction module II; in the distributed air-conditioning control subnetwork, the indoor units are grouped according to the total number or region, and each group is configured with a smart energy interaction module III.

[0018] Specifically, the intelligent air-conditioning controller and the smart energy interactive module use 4G to exchange information, and the communication protocol used is MQTT; the communication protocol used by the RS485 bus is Modbus RTU; the intelligent communication units use 4G to exchange information, and the communication protocol used is Modbus RTU.

[0019] The intelligent communication unit is an important component for establishing communication connections between different devices in the sub-network. The safety and stability of its operation are extremely important for each sub-network and the entire air conditioning control network. Specifically, the intelligent communication unit is used to realize data transparent transmission, and includes at least one Ethernet port, two RS485 serial ports and one 4G interface; a track connector or a wall connector is provided on the housing of the intelligent communication unit; power-off data and internal clock retention measures are provided in the intelligent communication unit, so that when the power is restored, the data is saved without loss and the internal clock operates normally.

[0020] Specifically, the intelligent communication unit includes at least three working modes: real-time collection, timed automatic collection and automatic supplementary copying; in the real-time collection, the corresponding data items of the connected device are directly collected, or the corresponding data items stored in the connected device are collected; in the timed automatic collection, the intelligent communication unit automatically collects the corresponding data items of the connected device or the corresponding data items stored according to the set plan; in the automatic supplementary copying, the intelligent communication unit automatically supplements the data that has not been collected within the specified time. If the supplementary copying fails, an event record is generated and reported.

[0021] Specifically, the intelligent communication unit has a self-checking function, which can realize self-checking without communication, self-checking and self-recovery, parameter self-checking, equipment communication abnormality detection and remote software upgrade; the self-checking without communication means that after the intelligent communication unit has no communication with the smart energy interactive module for a specified time, the intelligent communication unit is automatically reset and the smart energy interactive module is re-dialed; the self-checking and self-recovery means that the intelligent communication unit continuously monitors the operating status of its own communication software and hardware, records and reports the cause of the abnormality when an abnormality occurs, and can reset the abnormality by software or hardware; the parameter self-checking means that the intelligent communication unit backs up and verifies its own operating parameters to avoid intrusion and ensure reliable operation; the equipment communication abnormality detection means that the intelligent communication unit performs communication checks on the connected equipment, can identify communication interruptions, message abnormalities, and data item abnormalities, and generates and reports event records when abnormalities are found; the remote software upgrade means that the intelligent communication unit can realize online software upgrades through remote channels after obtaining application permission, and can also realize local software upgrades through local maintenance interfaces, and supports breakpoint continuation during the software application process.

[0022] Specifically, the wireless temperature and humidity sensor uses LoRa or Zigbee wireless mode to upload real-time data, the battery uses a built-in general industrial-grade lithium battery, and has communication and operation indicator lights; the temperature and humidity cloud box uses LoRa or Zigbee wireless mode to collect real-time data downward, uses an external power supply module for power supply, uses a metal sheet metal shell with a self-shielding effect, and has communication and operation indicator lights.

[0023] Specifically, the intelligent air conditioning controller exchanges information with the station-side auxiliary controller in the substation air conditioning load aggregation dispatching system through the RS485 bus, uploads air conditioning load information to the station-side auxiliary controller, and receives a designated load shedding instruction issued by the station-side auxiliary controller.

[0024] Specifically, the substation air conditioning load aggregation dispatching system is a three-layer structure consisting of a primary dispatching platform, a secondary dispatching platform and a station-side auxiliary controller; each substation is equipped with a station-side auxiliary controller, and the intelligent air conditioning controller is connected via RS485 The bus is connected to the station-side auxiliary controller, and the air-conditioning load information is collected through the intelligent air-conditioning controller. The station-side auxiliary controller aggregates the air-conditioning load information and uniformly uploads it to the secondary scheduling platform. The station-side auxiliary controller receives the specified load removal instruction issued by the secondary scheduling platform, and the intelligent air-conditioning controller removes the air conditioner according to the specified load removal instruction; the secondary scheduling platform monitors all air conditioners in the jurisdiction online according to the air-conditioning load information uploaded by the station-side auxiliary controller in the jurisdiction, aggregates and analyzes all air-conditioning load information in the jurisdiction to form a load aggregation model, uploads the air-conditioning load information and the load aggregation model to the primary scheduling platform, receives and disassembles the air-conditioning load aggregation scheduling instruction issued by the primary scheduling platform, generates the specified load removal instruction of each station-side auxiliary controller in the jurisdiction according to the air-conditioning removal strategy, and issues the specified load removal instruction to the station-side auxiliary controller; the primary scheduling platform aggregates and displays all air conditioners in the jurisdiction according to the load aggregation model and air-conditioning load information uploaded by the secondary scheduling platform in the jurisdiction, disassembles the control demand and generates the air-conditioning load aggregation scheduling instruction of each secondary scheduling platform in the jurisdiction, and issues the air-conditioning load aggregation scheduling instruction to the secondary scheduling platform.

[0025] The above-mentioned substation air conditioning load aggregation dispatching system aggregates and dispatches the air conditioning load as part of the power load in the new smart grid dispatching automation system, which can further improve the intelligence level of the power grid, optimize the operation and energy distribution of the power grid, and improve the safety and reliability of the power system. It adopts a three-layer structure to differentiate the storage and computing power requirements of each layer, and can quickly adapt to the existing three-level smart grid dispatching structure of province-local-station end; the substation end collects data and remotely controls the air conditioners within its jurisdiction, and the secondary dispatching platform undertakes as much data processing as possible, including the calculation of aggregation models and air conditioning removal instructions, which reduces the pressure on the computing power of the first-level dispatching platform and facilitates the first-level dispatching platform to display the working conditions of all air conditioning loads in a more macroscopic way. In the selection of data interaction methods, factors such as data volume, security, stability, and distance must be fully considered.

[0026] Beneficial effect: The intelligent air-conditioning control network suitable for load aggregation scheduling provided by the present invention, as a part of the power load in the new intelligent grid scheduling automation system, is mainly used to cooperate with the power station air-conditioning load aggregation scheduling system to realize air-conditioning load management, so that the scope of load aggregation scheduling is wider, which can further improve the intelligence level of the power grid, optimize the operation and energy distribution of the power grid, and improve the safety and reliability of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural block diagram of a substation air conditioning load aggregation dispatching system using the intelligent air conditioning controller of the present invention;

[0028] Figure 2 This is the structural diagram of the central air conditioning control subnetwork;

[0029] Figure 3 It is the structural block diagram of the multi-split air conditioning control sub-network;

[0030] Figure 4 This is the structural block diagram of the distributed air conditioning control subnetwork. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1The figure shows a substation air conditioning load aggregation dispatching system, which is a three-layer structure consisting of a primary dispatching platform, a secondary dispatching platform and a station-side auxiliary controller. Each substation is equipped with a station-side auxiliary controller. The intelligent air conditioning controller is connected to the station-side auxiliary controller through the RS485 bus. The intelligent air conditioning controller collects the data information of the air conditioning load. The station-side auxiliary controller aggregates the data information of the air conditioning load and uploads it to the secondary dispatching platform. The station-side auxiliary controller receives the air conditioning removal instruction issued by the secondary dispatching platform, and the intelligent air conditioning controller removes the air conditioning load according to the air conditioning removal instruction. The secondary dispatching platform monitors all air conditioning loads in the jurisdiction online based on the data information of the air conditioning load uploaded by the station-side auxiliary controller in the jurisdiction, aggregates and analyzes the data information of all air conditioning loads in the jurisdiction to form an aggregation model of the air conditioning load, uploads the aggregation model and data information of the air conditioning load to the primary dispatching platform, receives and disassembles the air conditioning load aggregation dispatching instruction issued by the primary dispatching platform, generates the air conditioning removal instruction of each station-side auxiliary controller in the jurisdiction according to the air conditioning removal strategy, and issues the air conditioning removal instruction to the station-side auxiliary controller. The first-level dispatching platform aggregates and displays all air-conditioning loads within its jurisdiction based on the aggregation model and data information of air-conditioning loads uploaded by the second-level dispatching platform within its jurisdiction, breaks down the control needs and generates air-conditioning load aggregation dispatching instructions for each second-level dispatching platform within its jurisdiction, and sends the air-conditioning load aggregation dispatching instructions to the second-level dispatching platform.

[0033] The air-conditioning load is added to the substation air-conditioning load aggregation dispatching system in the form of an intelligent air-conditioning control network. The connection hub is the intelligent air-conditioning controller. Each intelligent air-conditioning controller and all sub-networks communicating with it constitute a complete intelligent air-conditioning control network.

[0034] The following example shows that the management of the intelligent air-conditioning control network belongs to device-level regulation. The control rate requirement is above minute level, and the control target of the air-conditioning load is "observable, measurable, adjustable and controllable".

[0035] 1. Typical scenarios of air conditioning load

[0036] The air-conditioning load in buildings accounts for the vast majority of the air-conditioning load in the power supply system. There are three typical scenarios for air-conditioning load in buildings, namely central air-conditioning, multi-split air-conditioning and distributed air-conditioning. As shown in Table 1, each scenario has different main equipment and control objects.

[0037] Table 1 Three typical scenarios of air conditioning load

[0038]

[0039] 2. Construction of Central Air Conditioning Control Sub-Network

[0040] The control object of the central air-conditioning control sub-network is the air-conditioning host, which includes a chiller and an air-cooled heat pump. The central air-conditioning control sub-network realizes information interaction with the intelligent air-conditioning controller through the smart energy interaction module I; the smart energy interaction module I sends the received specified load removal instruction to the air-conditioning communication module, and the air-conditioning communication module controls the start and stop status and operating parameters of the air-conditioning host based on the set value and current value of the chilled water outlet temperature, the set value and current value of the chilled water return temperature, and the current start and stop status of the air-conditioning host to complete the removal of the specified load; the central air-conditioning control sub-network collects the real-time operating parameters of the central air-conditioning through the Internet of Things smart meter I and uploads them to the smart energy interaction module I, and the central air-conditioning control sub-network collects the real-time temperature and humidity values ​​of the environment through the wireless temperature and humidity sensor and uploads them to the smart energy interaction module I.

[0041] In the central air conditioning control sub-network, each air conditioning host is equipped with a smart energy interaction module I. During the communication connection, the basic principle is that the air conditioning communication module, the IoT smart meter I, and the temperature and humidity cloud box should all exchange data with the smart energy interaction module I through the RS485 bus. Figure 2 As shown, the specific design:

[0042] (1) All IoT smart meters I should first be networked internally (preferably through the RS485 bus, with Lora wireless networking as an alternative). After the networking is completed, in principle, wired RS485 should be used to interact with the smart energy interaction module for data.

[0043] (2) After the wireless temperature and humidity sensor transmits data to the temperature and humidity cloud box via Lora or Zigbee wireless method, in principle, it should use wired RS485 method to interact with the smart energy interactive module I.

[0044] (3) If the conditions on site are limited and it is impossible to ensure that all devices are connected via wired connection, priority should be given to ensuring that the air conditioning communication module and the smart energy interactive module I exchange data via RS485 wired mode; for devices other than the air conditioning communication module, data can be transparently transmitted by installing an intelligent communication unit on the device side and the interactive module side; the intelligent communication unit on the interactive module side exchanges data with the smart energy interactive module I via RS485 wired mode.

[0045] (4) Smart energy interaction module I exchanges information with the smart air-conditioning controller through the 4G network.

[0046] 3. Construction of multi-split air conditioning control sub-network

[0047] The control object of the multi-split air-conditioning control sub-network is the multi-split outdoor unit. The multi-split air-conditioning control sub-network realizes information interaction with the intelligent air-conditioning controller through the smart energy interaction module II; the smart energy interaction module II sends the received specified load removal instruction to the multi-split air-conditioning controller. The multi-split air-conditioning controller controls the start and stop status and operating parameters of each outdoor unit based on the current operating mode and set temperature to complete the removal of the specified load; the multi-split air-conditioning control sub-network collects the real-time operating parameters of the multi-split air conditioner through the Internet of Things smart meter II and uploads them to the smart energy interaction module II.

[0048] Since multi-split outdoor units are usually not arranged in one place, the corresponding method should be selected for group networking communication according to the distribution of multi-split outdoor units; for each group, first connect all outdoor machine refrigeration pipes, and then set up the master and slave machines, and control the master outdoor unit to drive the slave outdoor units to work together to form a refrigeration circuit. Each refrigeration circuit is equipped with a smart energy interaction module II. When communicating, the basic principle is that the multi-split air conditioning controller and the Internet of Things smart meter II should exchange data with the smart energy interaction module II through the RS485 bus. Figure 3 As shown, the specific design:

[0049] If the multi-split outdoor units are concentrated in several areas, each area is divided into a group. The multi-split air-conditioning controller and the IoT smart meter II in each group are networked through RS485 wired mode. After the networking is completed, in principle, the wired RS485 mode should be used to interact with the smart energy interactive module II. When the wired conditions are insufficient, data can be transparently transmitted by adding an intelligent communication unit on the device side (multi-split air-conditioning controller or IoT smart meter II) and the interactive module side. The intelligent communication unit on the interactive module side interacts with the smart energy interactive module II through RS485 wired mode. Finally, the smart energy interactive module II interacts with the smart air-conditioning controller through the 4G network.

[0050] If the multi-split outdoor units are distributed on each floor, each floor is divided into a group, and networking is completed between each group (networking is preferentially performed through RS485 wired), and then data is transparently transmitted through RS485 wired (preferentially) or through the intelligent communication units on both sides to complete data interaction with the smart energy interaction module. Finally, the smart energy interaction module II interacts with the smart air conditioning controller through the 4G network.

[0051] 4. Construction of decentralized air conditioning control sub-network

[0052] The control object of the distributed air-conditioning control subnetwork is the indoor unit. The distributed air-conditioning control subnetwork realizes information interaction with the intelligent air-conditioning controller through the smart energy interaction module III; the smart energy interaction module III is used to receive the specified load removal instruction, and regulate the start and stop status and operating parameters of each indoor unit through infrared control to complete the removal of the specified load. The indoor unit realizes infrared control through a single-phase smart socket or an air-conditioning controller; the distributed air-conditioning control subnetwork collects the real-time operating parameters of the distributed air-conditioning through the distributed air-conditioning control gateway and uploads them to the smart energy interaction module III.

[0053] In the distributed air conditioning control sub-network, the indoor units are grouped according to the total number (every 100 units) or region, and each group is configured with a smart energy interaction module III. During the communication connection, the basic principle is that both distributed air conditioning control gateways should exchange data with the smart energy interaction module via RS485 wired mode. Figure 4 As shown, the specific design:

[0054] If some decentralized air conditioning control gateways (LoRa) cannot exchange data with the smart energy interactive module III via RS485 wired mode, data can be transparently transmitted by installing intelligent communication units on the device side (decentralized air conditioning control gateway (Lora)) and the interactive module side. The intelligent communication unit on the interactive module side exchanges data with the smart energy interactive module III via RS485 wired mode. Finally, the smart energy interactive module III exchanges information with the smart air conditioning controller via the 4G network.

[0055] 5. Design of some monitoring equipment

[0056] 1. Design of intelligent air conditioning controller and smart energy interactive module

[0057] The design of the intelligent air-conditioning controller and smart energy interactive module needs to adapt to the needs of the substation air-conditioning load aggregation and dispatching system. It is mainly used to complete data aggregation and forwarding, ensure the security and timeliness of data transmission, and have self-inspection and monitoring functions.

[0058] 2. Design of intelligent communication unit

[0059] The intelligent communication unit is an important component to ensure the security of sub-network communications. Based on the components and connection methods it connects, the intelligent communication unit is required to include at least one Ethernet port, two RS485 serial ports and one 4G interface. Considering the installation environment of the intelligent communication unit, a rail-mounted connector or a wall-mounted connector is provided on the shell of the intelligent communication unit, and it is installed by rail connection or wall mounting.

[0060] (1) Design of working power supply

[0061] General requirements: The power input of the intelligent communication unit supports (direct current) DC 9V~48V, or (alternating current) AC 100V~230V wide voltage input.

[0062] Power consumption: In non-communication state, the active power consumption should not exceed 10W, and the apparent power consumption should not exceed 10VA.

[0063] Power-off data and internal clock retention: After power failure, data retention time is not less than twelve months, and the internal clock operates normally for at least five years; when power is restored, the saved data is not lost and the internal clock operates normally.

[0064] (2) Housing and protection

[0065] Housing Material: Metal.

[0066] Mechanical strength: When the casing of the intelligent communication unit is deformed by impact from external objects, its normal operation should not be affected.

[0067] Shell protection performance: The shell protection performance should comply with the requirements of GB / T 4208 and adopt IP41 level.

[0068] (3) Remote function

[0069] Remote configuration: All parameters in the intelligent communication unit can be remotely configured regardless of the public or private network.

[0070] Remote debugging: Whether in the public network or private network, you can remotely view the communication protocol messages and collected real-time data of each port of the intelligent communication unit.

[0071] Remote upgrade: Regardless of the public network or private network, the intelligent communication unit can be remotely upgraded, including the basic installation package and various protocol functions.

[0072] (4) Working mode

[0073] Real-time collection: directly collect corresponding data items from the connected device, or collect corresponding data items stored in the connected device.

[0074] Scheduled automatic collection: The intelligent communication unit automatically collects the corresponding data items of the connected device or the corresponding data items stored according to the set plan.

[0075] Automatic re-copying: The intelligent communication unit automatically re-copy the data that has not been collected within the specified time. If the re-copying fails, an event record will be generated and reported.

[0076] (5) Self-check function

[0077] No-communication self-check: When there is no communication between the intelligent communication unit and the smart energy interactive module for a specified period of time, the intelligent communication unit will be automatically reset and the connection to the smart energy interactive module will be re-dialed.

[0078] Self-check and self-recovery: refers to the intelligent communication unit continuously monitoring the operating status of its own communication software and hardware, recording and reporting the cause of the abnormality when an abnormality occurs, and being able to reset the abnormality through software or hardware.

[0079] Parameter self-check: refers to the intelligent communication unit backing up and verifying its own operating parameters to avoid intrusion and ensure reliable operation.

[0080] Device communication anomaly detection: refers to the intelligent communication unit performing communication checks on connected devices, which can identify communication interruptions, message anomalies, and data item anomalies, and generate event records and report them when an anomaly is found.

[0081] Remote software upgrade: It means that after obtaining application permission, the intelligent communication unit can realize online software upgrade through the remote channel, and can also realize local software upgrade through the local maintenance interface, and supports breakpoint resumption during the software application process.

[0082] 3. Design of wireless temperature and humidity sensor

[0083] Wireless temperature and humidity sensors can achieve high-precision temperature and humidity collection. LoRa or Zigbee wireless methods are used to upload real-time data, with long transmission distance, strong anti-interference ability and low power consumption. The maximum communication distance can reach 3000 meters of line of sight. The battery uses a built-in general industrial-grade lithium battery, which is easy to replace, ensuring that the temperature and humidity sensor can continue to work for at least 3 years at a collection frequency of 5min / time.

[0084] 4. Design of temperature and humidity cloud box

[0085] The temperature and humidity cloud box should be able to be used with wireless temperature and humidity sensors. It is powered by an external power module with a supply voltage of 10~30V. The device uses a metal sheet metal shell, has its own shielding, strong anti-interference ability, and more stable on-site operation. It has communication and operation indicator lights, and equipment problems can be easily judged on-site. It uses LoRa or Zigbee wireless communication technology to collect real-time data, supports multi-channel communication, enhances link communication stability, increases penetration and transmission capabilities, and supports at least 16 channels of temperature and humidity sensor data collection. It can be connected to an external computer or special debugging tool to debug the device, set parameters, and view the real-time data of the temperature and humidity sensors hanging down.

[0086] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. An intelligent air conditioning control network suitable for load aggregation scheduling, characterized by: It includes an intelligent air conditioning controller, and also includes one or more of a central air conditioning control sub-network, a multi-connected air conditioning control sub-network, and a distributed air conditioning control sub-network; The control object of the central air conditioning control sub-network is the air conditioning host, which includes a chiller and an air-cooled heat pump. The central air conditioning control sub-network realizes information interaction with the intelligent air conditioning controller through the smart energy interaction module I; the smart energy interaction module I sends the received specified load removal instruction to the air conditioning communication module, and the air conditioning communication module controls the start-stop state and operating parameters of the air conditioning host based on the set value and current value of the chilled water outlet temperature, the set value and current value of the chilled water return temperature, and the current start-stop state of the air conditioning host to complete the removal of the specified load; The central air conditioning control sub-network collects the real-time operating parameters of the central air conditioning through the IoT smart meter I and uploads them to the smart energy interactive module I. The central air conditioning control sub-network collects the real-time temperature and humidity values ​​of the environment through the wireless temperature and humidity sensor and uploads them to the smart energy interactive module I; The control object of the multi-split air conditioning control sub-network is the multi-split outdoor unit. The multi-split air conditioning control sub-network realizes information interaction with the intelligent air conditioning controller through the smart energy interaction module II; the smart energy interaction module II sends the received specified load removal instruction to the multi-split air conditioning controller, and the multi-split air conditioning controller controls the start and stop status and operating parameters of each outdoor unit based on the current operating mode and set temperature to complete the removal of the specified load; The multi-split air conditioner control sub-network collects the real-time operating parameters of the multi-split air conditioner through the IoT smart meter II and uploads them to the smart energy interactive module II; The control object of the distributed air conditioning control sub-network is the indoor unit. The distributed air conditioning control sub-network realizes information interaction with the intelligent air conditioning controller through the smart energy interaction module III; the smart energy interaction module III is used to receive the specified load removal instruction, and control the start and stop status and operating parameters of each indoor unit through infrared control to complete the removal of the specified load; the distributed air conditioning control sub-network collects the real-time operating parameters of the distributed air conditioner through the distributed air conditioning control gateway and uploads them to the smart energy interaction module III; The intelligent air-conditioning controller exchanges information with the station-side auxiliary controller in the substation air-conditioning load aggregation dispatching system through the RS485 bus, uploads air-conditioning load information to the station-side auxiliary controller, and receives the specified load removal instruction issued by the station-side auxiliary controller; the substation air-conditioning load aggregation dispatching system is a three-layer structure consisting of a primary dispatching platform, a secondary dispatching platform and a station-side auxiliary controller; Each substation is equipped with a station-side auxiliary controller. The intelligent air-conditioning controller is connected to the station-side auxiliary controller through the RS485 bus. The air-conditioning load information is collected through the intelligent air-conditioning controller. The station-side auxiliary controller aggregates the air-conditioning load information and uploads it to the secondary dispatching platform. The station-side auxiliary controller receives the specified load removal instruction issued by the secondary dispatching platform, and the intelligent air-conditioning controller removes the air conditioner according to the specified load removal instruction. The secondary dispatching platform monitors all air conditioners in the jurisdiction online based on the air conditioner load information uploaded by the station-side auxiliary controllers in the jurisdiction, aggregates and analyzes all air conditioner load information in the jurisdiction to form a load aggregation model, uploads the air conditioner load information and load aggregation model to the primary dispatching platform, receives and disassembles the air conditioner load aggregation dispatching instructions issued by the primary dispatching platform, generates the specified load shedding instructions for each station-side auxiliary controller in the jurisdiction according to the air conditioner shedding strategy, and issues the specified load shedding instructions to the station-side auxiliary controllers; The first-level dispatching platform aggregates and displays all air conditioners within its jurisdiction based on the load aggregation model and air-conditioning load information uploaded by the second-level dispatching platform within its jurisdiction, breaks down the control needs and generates air-conditioning load aggregation dispatching instructions for each second-level dispatching platform within its jurisdiction, and sends the air-conditioning load aggregation dispatching instructions to the second-level dispatching platform.

2. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 1 is characterized in that: In the central air conditioning control subnetwork, the IoT smart meters 1 are first internally networked through the RS485 bus or Lora wireless. After the internal networking is completed, information is exchanged with the smart energy interaction module 1 through the RS485 bus or the intelligent communication unit; the wireless temperature and humidity sensor first transmits the collected data to the temperature and humidity cloud box through Lora or Zigbee wireless mode, and then the temperature and humidity cloud box exchanges information with the smart energy interaction module 1 through the RS485 bus or the intelligent communication unit; the air conditioning communication module exchanges information with the smart energy interaction module 1 through the RS485 bus; The smart energy interactive module I exchanges information with the smart air-conditioning controller via wireless communication; In the multi-split air conditioning control sub-network, the multi-split air conditioners are grouped according to regions or floors. The multi-split air conditioning controller and the IoT smart meter II in each group are first internally networked via RS485 bus or Lora wireless. After the internal networking is completed, information is exchanged with the smart energy interaction module II via RS485 bus or smart communication unit; the smart energy interaction module II exchanges information with the smart air conditioning controller via wireless communication; In the distributed air conditioning control sub-network, the indoor unit realizes infrared control through a single-phase smart socket or an air conditioning controller, and the single-phase smart socket and the air conditioning controller interact with the distributed air conditioning control gateway through Lora wireless or 4G wireless; the distributed air conditioning control gateway interacts with the smart energy interaction module III through the RS485 bus or the smart communication unit; the smart energy interaction module III interacts with the smart air conditioning controller through wireless communication; The intelligent communication units transparently transmit data to each other through wireless means, and the intelligent communication units transparently transmit data to other devices through RS485 bus.

3. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 1 is characterized in that: In the central air-conditioning control subnetwork, each air-conditioning host is configured with a smart energy interaction module I; in each group of the multi-split air-conditioning control subnetwork, all outdoor machine refrigeration pipes are connected first, and then the master-slave machine settings are performed, and the slave outdoor units are driven to work together by controlling the master outdoor unit to form a refrigeration circuit, and each refrigeration circuit is configured with a smart energy interaction module II; in the distributed air-conditioning control subnetwork, the indoor units are grouped according to the total number or region, and each group is configured with a smart energy interaction module III.

4. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 2 is characterized in that: The intelligent air-conditioning controller and the smart energy interactive module use 4G to exchange information, and the communication protocol used is MQTT; the communication protocol used by the RS485 bus is Modbus RTU; the intelligent communication units use 4G to exchange information, and the communication protocol used is Modbus RTU.

5. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 2 is characterized in that: The intelligent communication unit is used to realize data transparent transmission, and includes at least one Ethernet port, two RS485 serial ports and one 4G interface; a track connection or a wall connection is arranged on the shell of the intelligent communication unit; power-off data and internal clock retention measures are arranged in the intelligent communication unit, so that when the power is restored, the data is saved without being lost and the internal clock operates normally.

6. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 2 is characterized in that: The intelligent communication unit includes at least three working modes: real-time collection, timed automatic collection and automatic supplementary copying. In the real-time collection, the corresponding data items of the connected device are directly collected, or the corresponding data items stored in the connected device are collected. In the timed automatic collection, the intelligent communication unit automatically collects the corresponding data items of the connected device or the corresponding data items stored according to the set plan. In the automatic supplementary copying, the intelligent communication unit automatically supplements the data that has not been collected within the specified time. If the supplementary copying fails, an event record is generated and reported.

7. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 2 is characterized in that: The intelligent communication unit is provided with a self-checking function, which can realize self-checking without communication, self-checking and self-recovery, parameter self-checking, equipment communication abnormality detection and remote software upgrade; the self-checking without communication means that after the intelligent communication unit and the smart energy interactive module have no communication for a specified time, the intelligent communication unit is automatically reset and the smart energy interactive module is re-dialed; the self-checking and self-recovery means that the intelligent communication unit continuously monitors the running status of its own communication software and hardware, records and reports the abnormal cause when an abnormality occurs, and can reset the abnormality by software or hardware; the parameter self-checking means that the intelligent communication unit backs up and verifies its own operating parameters to avoid being invaded and ensure reliable operation; the equipment communication abnormality detection means that the intelligent communication unit performs communication checks on the connected equipment, can identify communication interruptions, message abnormalities, data item abnormalities, and generates and reports event records when abnormalities are found; the remote software upgrade means that the intelligent communication unit can realize online software upgrades through remote channels after obtaining application permission, and can also realize local software upgrades through local maintenance interfaces, and supports breakpoint continuation during the software application process.

8. The intelligent air conditioning control network suitable for load aggregation scheduling according to claim 1 is characterized in that: The wireless temperature and humidity sensor uses LoRa or Zigbee wireless mode to upload real-time data, the battery uses a built-in general industrial-grade lithium battery, and has communication and operation indicator lights; the temperature and humidity cloud box uses LoRa or Zigbee wireless mode to collect real-time data downward, uses an external power supply module for power supply, uses a metal sheet metal shell with a self-shielding effect, and has communication and operation indicator lights.

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