A Substation Air Conditioning Load Aggregation Dispatching System

Abstract

The present invention discloses a substation air conditioning load aggregation dispatching system, which is composed of a first-level dispatching platform, a second-level dispatching platform and a station-side auxiliary controller to form a three-layer structure; the intelligent air conditioning controller collects and uploads the data information of the air conditioning load, and after the second-level dispatching platform receives the air conditioning load aggregation dispatching instruction, it disassembles the air conditioning load aggregation dispatching instruction, constructs the air conditioning removal instruction according to the air conditioning removal strategy and sends it to the station-side auxiliary controller for execution, so as to achieve the air conditioning load aggregation dispatching target. The present invention aggregates and dispatches the air conditioning load as part of the power load in the new intelligent power grid dispatching automation system, enriches the consideration factors of the power load, 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.

Description

Technical Field

[0001] The invention relates to a substation air-conditioning load aggregation dispatching system, which belongs to a monitoring, analysis, dispatching and control technology for power load in a new intelligent power grid dispatching automation system. Background Art

[0002] Grid dispatching automation should be used to help electricity enter the market in response to the needs of grid development. In this environment, grid technology is developing more rapidly and maturely, the intelligence level 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 a substation air-conditioning load aggregation and dispatching system, which aggregates and dispatches the air-conditioning load as part of the power load in the new intelligent grid dispatching automation 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.

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

[0007] A substation air conditioning load aggregation dispatching system, the system is a three-layer structure consisting of a primary dispatching platform, a secondary dispatching platform and a station-side auxiliary controller;

[0008] 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 command issued by the secondary dispatching platform, and the intelligent air-conditioning controller removes the air-conditioning load according to the air-conditioning removal command.

[0009] The secondary dispatching platform and the station-side auxiliary controllers within the jurisdiction exchange data through the http protocol and restful interface, and different secondary dispatching platforms exchange data through E files; the secondary dispatching platform monitors all air-conditioning loads within the jurisdiction online based on the data information of air-conditioning loads uploaded by the station-side auxiliary controllers within the jurisdiction, aggregates and analyzes the data information of all air-conditioning loads within the jurisdiction to form an aggregation model of air-conditioning loads, uploads the aggregation model and data information of air-conditioning loads to the primary dispatching platform, receives and disassembles the air-conditioning load aggregation dispatching instructions issued by the primary dispatching platform, generates air-conditioning removal instructions for each station-side auxiliary controller within the jurisdiction according to the air-conditioning removal strategy, and issues air-conditioning removal instructions to the station-side auxiliary controllers;

[0010] The first-level dispatching platform exchanges data with at least some of the second-level dispatching platforms within its jurisdiction through the wide area service bus or DL476 forwarding method; 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 platforms within its jurisdiction, disassembles 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 platforms.

[0011] The substation air conditioning load aggregation dispatching system provided in this case 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. This case 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, this case fully considered factors such as data volume, security, stability, and distance. For example, the secondary dispatching platform and the station-side auxiliary controller are connected through a network port, which has fast data transmission, high security, and can meet the data volume requirements; however, between different secondary dispatching platforms, due to the sharp increase in data volume, the general network port is obviously under pressure, so the intranet-based E-file transfer (Raysync transfer) is designed to further improve the security of data transmission and meet the data volume requirements; between the primary dispatching platform and the secondary dispatching platform, due to the further increase in data volume, the wide area service bus method or DL476 forwarding method is designed for data interaction.

[0012] Preferably, from all the secondary dispatching platforms within the jurisdiction of the primary dispatching platform, some secondary dispatching platforms are selected to directly interact with the primary dispatching platform, and the remaining secondary dispatching platforms indirectly interact with the primary dispatching platform through these secondary dispatching platforms. Generally speaking, the jurisdiction of the secondary dispatching platform is divided according to the size of the geographical area, but some secondary dispatching platforms are far away from the primary dispatching platform or have a small amount of data, and the cost of directly establishing data interaction with the primary dispatching platform is high, so this indirect method can be used to reduce costs.

[0013] Preferably, it also includes a power distribution intelligent auxiliary module, each power distribution intelligent auxiliary module serves more than one secondary dispatching platform, and the power distribution intelligent auxiliary module is used as an access service for data interaction between the secondary dispatching platform and the intelligent air conditioning controller; the secondary dispatching platform and the power distribution intelligent auxiliary module interact with each other through the http protocol and the restful interface, and the power distribution intelligent auxiliary module interacts with the station-side auxiliary controller through the http protocol and the restful interface. The power distribution intelligent auxiliary module can alleviate the data storage and computing pressure of the secondary dispatching platform and can be shared by multiple secondary dispatching platforms.

[0014] Preferably, it also includes a centralized control intelligent auxiliary module. Each power distribution intelligent auxiliary module serves all intelligent air-conditioning controllers within the jurisdiction of a secondary dispatching platform. The power distribution intelligent auxiliary module is partitioned for storage, corresponding one-to-one to the intelligent air-conditioning controllers served. The centralized control intelligent auxiliary module is used as an access service for data interaction between the secondary dispatching platform and the intelligent air-conditioning controller. Each centralized control intelligent auxiliary module interacts with at least two secondary dispatching platforms, and at least one secondary dispatching platform is able to directly interact with the primary dispatching platform. The secondary dispatching platform and the centralized control intelligent auxiliary module interact with data through E files, and the centralized control intelligent auxiliary module interacts with the station-side auxiliary controller through the http protocol and the restful interface. The centralized control intelligent auxiliary module can alleviate the data storage and computing pressure of the secondary dispatching platform. Compared with the power distribution intelligent auxiliary module, it can share the computing power of the secondary dispatching platform to a certain extent.

[0015] Preferably, the air conditioning load aggregation scheduling instruction includes a preset instruction and an execution instruction. The preset instruction includes the air conditioning load aggregation scheduling target. The first-level scheduling platform first sends the preset instruction to the second-level scheduling platform. The second-level scheduling platform confirms that the air conditioning load aggregation scheduling target can be achieved according to the air conditioning load aggregation scheduling target and the air conditioning removal strategy, and then feeds back the confirmation information to the first-level scheduling platform. After receiving the confirmation information, the first-level scheduling platform sends the execution instruction to the second-level scheduling platform. After receiving the execution instruction, the second-level scheduling platform sends the air conditioning removal instruction to the station-side auxiliary controller; the air conditioning removal instruction at least includes the aggregation scheduling information including the control object, control level, load removal amount, load removal start time and load removal duration. The control level represents the priority of the order of shutting down the air conditioning load. The air conditioning load with a higher priority is shut down first. Splitting the air conditioning load aggregation scheduling instruction into preset instructions and execution instructions can ensure that the adjustable load meets the requirements and the information communication is normal, and avoid abnormal situations in the waiting period, which affect the aggregation scheduling effect.

[0016] Preferably, the air conditioning load is divided into two categories according to the installation location: air conditioning that can be turned off at any time and flexible air conditioning that can be cut off. The air conditioning cut-off strategy is as follows:

[0017] The control level of shutting down the air conditioner at any time is higher than the control level of the flexible switchable air conditioner;

[0018] The air conditioner is turned off at any time. First, the air conditioner loads in operation are arranged from low to high according to the substation voltage level, and then the air conditioner loads are classified from low to high according to the regional voltage level for each substation voltage level. Finally, the air conditioner loads are arranged from high to low according to the real-time load for each regional voltage level. The lower the substation voltage level, the higher the control level, the lower the regional voltage level, the higher the control level, and the higher the real-time load, the higher the control level; among all the air conditioners that can be turned off at any time, the air conditioner load with the lowest substation voltage level, the lowest regional voltage level and the highest real-time load has the highest control level;

[0019] The flexible switchable air conditioner is provided with a heating temperature start value and a cooling temperature start value; during the execution of the air conditioning load aggregation scheduling instruction, if the ambient temperature is lower than the heating temperature start value of a certain flexible switchable air conditioner or higher than the cooling temperature start value, the flexible switchable air conditioner is forced to enter the heating mode or the cooling mode, and the air conditioning load aggregation scheduling instruction is shielded; during the execution of the air conditioning load aggregation scheduling instruction, if the ambient temperature is between the heating temperature start value and the cooling temperature start value of a certain flexible switchable air conditioner, the flexible switchable air conditioner is allowed to be cut off; for the flexible switchable air conditioner that is allowed to be cut off, the air conditioning loads in operation are first arranged from low to high according to the substation voltage level, and then the air conditioning loads are arranged from high to low according to the real-time load for each substation voltage level. The lower the substation voltage level, the higher the control level, and the higher the real-time load, the higher the control level; among all the flexible switchable air conditioners, the one with the lowest substation voltage level and The control level of the air conditioner load with the highest real-time load is the highest; during the execution of the air conditioner load aggregation scheduling instruction, the secondary scheduling platform uses a batch rotation strategy to cut off all flexible cuttable air conditioners that are allowed to be cut off within the jurisdiction, and the flexible cuttable air conditioners retain at least 50% margin; the batch rotation strategy means that after the execution of a certain air conditioner load aggregation scheduling instruction, the control level of all flexible cuttable air conditioners cut off according to the air conditioner cutting instruction during the execution of the air conditioner load aggregation scheduling instruction is adjusted to the lowest as a whole; for example, there are a total of 5 flexible cuttable air conditioners, which are ranked from high to low in terms of control level as air conditioner 1, air conditioner 2, air conditioner 3, air conditioner 4, and air conditioner 5. During the execution of a certain air conditioner load aggregation scheduling instruction, air conditioners 1 and air conditioner 2 are cut off. After the execution of the air conditioner load aggregation scheduling instruction, the control level is ranked from high to low as air conditioner 3, air conditioner 4, air conditioner 5, air conditioner 1, and air conditioner 2;

[0020] After the execution period of the air-conditioning load aggregation scheduling instruction ends, except for the flexible switchable air-conditioning that is forced to enter the heating mode or cooling mode, all other air-conditioning loads are restored to the state before the start of the air-conditioning load aggregation scheduling instruction execution period. If the recovery fails, an alarm reminder will be issued.

[0021] Preferably, the air conditioner that can be turned off at any time is installed in the inspection robot room, drone room, conference room, dormitory, data room, safety equipment room, spare room, office, hall, lounge, kitchen, restaurant, guard room, duty room or activity room, and the flexible switchable air conditioner is installed in the main control room, control room, high-voltage room, relay protection room, protection room, switch room, monitoring room, communication room, reactor room, communication room, data center, high-voltage room or battery room.

[0022] Preferably, the execution process of the air conditioning load aggregation scheduling instruction includes the following steps:

[0023] S1: The first-level dispatching platform disassembles the control demand according to the aggregation model and data information of the air-conditioning load, generates the air-conditioning load aggregation dispatching instructions of each second-level dispatching platform within the jurisdiction, and sends the preset instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform, and the preset instructions include the air-conditioning load aggregation dispatching target; enter step S2;

[0024] S2: The secondary dispatching platform receives the preset instruction issued by the primary dispatching platform, and determines whether the air conditioning load aggregation dispatching target can be achieved according to the total load removal amount: if it cannot be achieved, it returns to step S1; otherwise, the secondary dispatching platform feeds back confirmation information to the primary dispatching platform and enters step S3;

[0025] S3: The first-level dispatching platform sends the execution instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform;

[0026] S4: The secondary dispatching platform receives the execution instruction issued by the primary dispatching platform, disassembles the air-conditioning load aggregation dispatching target, selects the air-conditioning load to be removed according to the air-conditioning removal strategy, and generates the air-conditioning removal instruction of each station-side auxiliary controller within the jurisdiction, wherein the air-conditioning removal instruction at least includes the aggregation dispatching information including the control object, control level, load removal amount, load removal start time and load removal duration; and proceeds to step S5;

[0027] S5: Wait until the air conditioner cut-off instruction execution time arrives, and the secondary dispatching platform sends the air conditioner cut-off instruction to each station-side auxiliary controller; then proceed to step S6;

[0028] S6: The station-side auxiliary controller receives the air conditioning cut-off instruction issued by the secondary dispatching platform, and the intelligent air conditioning controller executes the air conditioning cut-off instruction; then proceeds to step S7;

[0029] S7: Wait until the delay time arrives, and the secondary scheduling platform inspects the execution results to determine whether all the removals are completed: if all the removals are completed, go to step S8; otherwise, count the number of inspections, and if it reaches the set value, go to step S8, otherwise repeat step S7;

[0030] S8: The secondary scheduling platform uploads the execution result to the primary scheduling platform; proceed to step S9;

[0031] S9: The first-level dispatching platform receives the execution result uploaded by the second-level dispatching platform; and proceeds to step S10;

[0032] S10: Wait until the load shedding duration is reached. Except for the flexible switchable air conditioner that is forced into the heating mode or cooling mode, all other air conditioning loads are restored to the state before the execution of step S5. If the restoration fails, an alarm reminder is issued.

[0033] Preferably, the data flow process of the air conditioning load data information includes the following steps:

[0034] S1: The intelligent air conditioning controller collects data information of the air conditioning load and uploads it to the station-side auxiliary controller; the data information of the air conditioning load includes basic parameters of the air conditioning, on / off status and real-time load;

[0035] S2: The station-side auxiliary controller receives the data information of the air-conditioning load uploaded by the intelligent air-conditioning controller, aggregates the data information of the air-conditioning load and uploads it to the secondary dispatching platform;

[0036] S3: The secondary dispatching platform receives the data information of the air-conditioning load uploaded by the auxiliary controller at the station end, monitors all the air-conditioning loads within the jurisdiction online, and aggregates and analyzes the data information of the air-conditioning load based on the main transformer and feeder information of the distribution station building, taking the substation building as a unit to form an aggregation model of the air-conditioning load; at the same time, the secondary dispatching platform counts the total number of air-conditioning loads, the total number of powered-on units, and the real-time total load of all air-conditioning loads within the jurisdiction, queries the reserved margin locally, calculates the total load that can be reduced based on the reserved margin, and adds the total number of air-conditioning loads, the total number of powered-on units, the real-time total load, and the total load that can be reduced to the data information of the air-conditioning load; the secondary dispatching platform assembles the aggregation model and data information of the air-conditioning load into a json message;

[0037] S4: Wait until the message upload time arrives, and the secondary scheduling platform uploads the JSON message to the primary scheduling platform;

[0038] S5: The first-level dispatching platform stores and transfers the JSON message uploaded by the second-level dispatching platform.

[0039] Preferably, the first-level dispatching platform counts the total number of air conditioners, the total number of air conditioners turned on, the real-time total load and the total load that can be adjusted down of all air-conditioning loads in the jurisdiction based on the aggregation model and data information of the air-conditioning loads uploaded by the second-level dispatching platform in the jurisdiction, draws the real-time total load curves and the corresponding rated capacity lines of each air-conditioning load, each substation, each second-level dispatching platform and the first-level dispatching platform in the jurisdiction, monitors the execution plan and execution result of each air-conditioning load for the air-conditioning cut-off instruction, and issues an alarm for fault conditions.

[0040] Beneficial effects: The substation air-conditioning load aggregation and dispatching system provided by the present invention aggregates and dispatches the air-conditioning load as a part of the power load in the new intelligent grid dispatching automation system, enriching the consideration factors of the power load, and 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

[0041] Figure 1 is an architecture diagram of the system of the present invention;

[0042] Figure 2 It is a schematic diagram of the air conditioning removal strategy in the present invention;

[0043] Figure 3 It is a flowchart of the execution process of the air conditioning load aggregation scheduling instruction;

[0044] Figure 4 The figure is a flow chart of the data flow process of the air conditioning load data information. DETAILED DESCRIPTION

[0045] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] A substation air conditioning load aggregation dispatching system takes the air conditioning load as a consideration of the power load in the new smart grid dispatching automation system to 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.

[0047] 1. Construction Objectives

[0048] Based on the existing three-level smart grid dispatching structure of province-local-station, air-conditioning load is taken as a consideration factor of power load in the new smart grid dispatching automation system. The joint debugging and docking of the first-level dispatching platform, the second-level dispatching platform and the station-side auxiliary controller are designed to achieve the access of air-conditioning load at the station-side of 500 kV and below substations, and the air-conditioning load aggregation dispatching instructions are issued from the first-level dispatching platform to the second-level dispatching platform.

[0049] After receiving the air-conditioning load aggregation scheduling instruction, the secondary scheduling platform disassembles the air-conditioning load aggregation scheduling instruction, constructs the air-conditioning cut-off instruction according to the air-conditioning cut-off strategy, and sends it to the station-side auxiliary controller for execution to achieve the air-conditioning load aggregation scheduling target.

[0050] 2. System Architecture

[0051] like Figure 2 As shown in the figure, 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.

[0052] Each substation is equipped with a station-side auxiliary controller, which collects data information of air-conditioning load through the intelligent air-conditioning controller. The station-side auxiliary controller aggregates the data information of air-conditioning load and uploads it to the secondary dispatching platform. The station-side auxiliary controller receives the air-conditioning cut-off instruction issued by the secondary dispatching platform, and the intelligent air-conditioning controller cuts off the air-conditioning load according to the air-conditioning cut-off instruction.

[0053] The secondary dispatching platform monitors all air-conditioning loads within its jurisdiction online based on the data information of air-conditioning loads uploaded by the station-side auxiliary controllers within its jurisdiction, aggregates and analyzes the data information of all air-conditioning loads within its jurisdiction to form an aggregation model of the air-conditioning loads, uploads the aggregation model and data information of the air-conditioning loads to the primary dispatching platform, receives and disassembles the air-conditioning load aggregation dispatching instructions issued by the primary dispatching platform, generates air-conditioning cut-off instructions for each station-side auxiliary controller within its jurisdiction according to the air-conditioning cut-off strategy, and issues the air-conditioning cut-off instructions to the station-side auxiliary controllers.

[0054] 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.

[0055] 3. Access method

[0056] 1. The intelligent air conditioning controller is connected to the station-side auxiliary controller via the RS485 bus.

[0057] 2. The secondary dispatching platform exchanges data with the station-side auxiliary controllers within its jurisdiction through the power transformation and distribution intelligent auxiliary module or the centralized control intelligent auxiliary module.

[0058] The intelligent auxiliary module for power transformation and distribution is a more traditional design method. Each intelligent auxiliary module for power transformation and distribution serves more than one secondary dispatching platform, and the intelligent auxiliary module for power transformation and distribution is used as the access service for data interaction between the secondary dispatching platform and the intelligent air-conditioning controller; the station-side auxiliary controller and the intelligent auxiliary module for power transformation and distribution interact with each other through the http protocol and the restful interface, and the intelligent auxiliary module for power transformation and distribution interact with the secondary dispatching platform through the http protocol and the restful interface.

[0059] The centralized control intelligent auxiliary module is a newly created design method. Each power transformation and distribution intelligent auxiliary module serves all intelligent air-conditioning controllers within the jurisdiction of a secondary dispatching platform. The power transformation and distribution intelligent auxiliary modules are stored in partitions, corresponding one to one to the intelligent air-conditioning controllers they serve. The centralized control intelligent auxiliary module is used as an access service for data interaction between the secondary dispatching platform and the intelligent air-conditioning controllers. Each centralized control intelligent auxiliary module interacts with at least two secondary dispatching platforms, and at least one secondary dispatching platform can directly interact with the primary dispatching platform. The station-side auxiliary controller interacts with the centralized control intelligent auxiliary module through the http protocol and the restful interface, and the centralized control intelligent auxiliary module interacts with the secondary dispatching platform through E-files.

[0060] 3. Data exchange between different secondary scheduling platforms is carried out through E-files.

[0061] 4. The first-level dispatching platform and some second-level dispatching platforms within its jurisdiction exchange data directly through the wide area service bus or DL476 forwarding method, and the first-level dispatching platform and the remaining second-level dispatching platforms exchange data indirectly through these second-level dispatching platforms.

[0062] 4. Air conditioning removal strategy

[0063] 1. Dispatch support

[0064] The air-conditioning load aggregation scheduling instruction includes a preset instruction and an execution instruction. The preset instruction includes the air-conditioning load aggregation scheduling target. The first-level scheduling platform first sends the preset instruction to the second-level scheduling platform. The second-level scheduling platform confirms that the air-conditioning load aggregation scheduling target can be achieved based on the air-conditioning load aggregation scheduling target and the air-conditioning removal strategy, and then feeds back confirmation information to the first-level scheduling platform. After receiving the confirmation information, the first-level scheduling platform ensures that the communication is normal and the air-conditioning load aggregation scheduling target can be achieved, and then sends the execution instruction to the second-level scheduling platform. After receiving the execution instruction, the second-level scheduling platform sends the air-conditioning removal instruction to the station-side auxiliary controller.

[0065] The air conditioning cut-off instruction at least includes aggregated scheduling information including the control object, control level, load cut-off amount, load cut-off start time and load cut-off duration.

[0066] 2. Air conditioning removal strategy

[0067] Air conditioning load is divided into two categories according to the installation location: air conditioning that can be turned off at any time and flexible air conditioning. Refer to Table 1 to classify the air conditioning load.

[0068] Table 1 Classification of air conditioning loads

[0069]

[0070] The air conditioner can be turned off at any time. The flexible switchable air conditioner is set with a heating temperature start value (for example: the ambient temperature is less than 5°C) and a cooling temperature start value (for example: the ambient temperature is greater than 25°C). At any time, if the ambient temperature is lower than the heating temperature start value of a flexible switchable air conditioner or higher than the cooling temperature start value, the flexible switchable air conditioner is forced to enter the heating mode or cooling mode, and all air conditioning load aggregation scheduling instructions are shielded. If the ambient temperature is between the heating temperature start value and the cooling temperature start value of a flexible switchable air conditioner, the flexible switchable air conditioner is allowed to be cut off.

[0071] The control level is used to represent the priority of the order of shutting down the air conditioning loads. The air conditioning loads with higher priorities are shut down first. Figure 2 As shown, the air conditioning removal strategy is designed as follows:

[0072] (1) The control level of turning off the air conditioner at any time is higher than the control level of the flexible switchable air conditioner.

[0073] (2) For air conditioners that can be turned off at any time, first sort the air conditioner loads in operation from low to high according to the substation voltage level, then classify the air conditioner loads from low to high according to the regional voltage level for each substation voltage level, and finally sort the air conditioner loads from high to low according to the real-time load for each regional voltage level. The lower the substation voltage level, the higher the control level, the lower the regional voltage level, the higher the control level, and the higher the real-time load, the higher the control level; among all air conditioners that can be turned off at any time, the air conditioner load with the lowest substation voltage level, the lowest regional voltage level and the highest real-time load has the highest control level.

[0074] (3) For the flexible cuttable air conditioners that are allowed to be cut off, first arrange the air conditioner loads in operation from low to high according to the substation voltage level, and then arrange the air conditioner loads from high to low according to the real-time load for each substation voltage level. The lower the substation voltage level, the higher the control level, and the higher the real-time load, the higher the control level. Among all the flexible cuttable air conditioners, the air conditioner load with the lowest substation voltage level and the highest real-time load has the highest control level.

[0075] (4) The secondary dispatching platform adopts a batch rotation strategy to cut off all flexible cuttable air conditioners that are allowed to be cut off within its jurisdiction, and at least 50% margin is retained for the flexible cuttable air conditioners.

[0076] (5) After the execution period of the air conditioning load aggregation scheduling instruction ends, except for the flexible switchable air conditioners that are forced to enter the heating mode or cooling mode, all other air conditioning loads are restored to the state before the start of the air conditioning load aggregation scheduling instruction execution period. If the restoration fails, an alarm reminder will be issued.

[0077] 5. Business Process

[0078] like Figure 3As shown in FIG. 1 , the execution process of the air conditioning load aggregation scheduling instruction includes the following steps:

[0079] S1: The first-level dispatching platform disassembles the control demand according to the aggregation model and data information of the air-conditioning load, generates the air-conditioning load aggregation dispatching instructions of each second-level dispatching platform within the jurisdiction, and sends the preset instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform, and the preset instructions include the air-conditioning load aggregation dispatching target; enter step S2;

[0080] S2: The secondary dispatching platform receives the preset instruction issued by the primary dispatching platform, and determines whether the air conditioning load aggregation dispatching target can be achieved according to the total load removal amount: if it cannot be achieved, it returns to step S1; otherwise, the secondary dispatching platform feeds back confirmation information to the primary dispatching platform and enters step S3;

[0081] S3: The first-level dispatching platform sends the execution instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform;

[0082] S4: The secondary dispatching platform receives the execution instruction issued by the primary dispatching platform, disassembles the air-conditioning load aggregation dispatching target, selects the air-conditioning load to be removed according to the air-conditioning removal strategy, and generates the air-conditioning removal instruction of each station-side auxiliary controller within the jurisdiction, wherein the air-conditioning removal instruction at least includes the aggregation dispatching information including the control object, control level, load removal amount, load removal start time and load removal duration; and proceeds to step S5;

[0083] S5: Wait until the air conditioner cut-off instruction execution time arrives, and the secondary dispatching platform sends the air conditioner cut-off instruction to each station-side auxiliary controller; then proceed to step S6;

[0084] S6: The station-side auxiliary controller receives the air conditioning cut-off instruction issued by the secondary dispatching platform, and the intelligent air conditioning controller executes the air conditioning cut-off instruction; then proceeds to step S7;

[0085] S7: Wait until the delay time arrives, and the secondary scheduling platform inspects the execution results to determine whether all the removals are completed: if all the removals are completed, go to step S8; otherwise, count the number of inspections, and if it reaches the set value, go to step S8, otherwise repeat step S7;

[0086] S8: The secondary scheduling platform uploads the execution result to the primary scheduling platform; proceed to step S9;

[0087] S9: The first-level dispatching platform receives the execution result uploaded by the second-level dispatching platform; and proceeds to step S10;

[0088] S10: Wait until the load shedding duration is reached. Except for the flexible switchable air conditioner that is forced into the heating mode or cooling mode, all other air conditioning loads are restored to the state before the execution of step S5. If the restoration fails, an alarm reminder is issued.

[0089] like Figure 4 As shown in FIG. 1 , the data flow process of the air conditioning load data information includes the following steps:

[0090] S1: The intelligent air conditioning controller collects data information of the air conditioning load and uploads it to the station-side auxiliary controller; the data information of the air conditioning load includes basic parameters of the air conditioning, on / off status and real-time load;

[0091] S2: The station-side auxiliary controller receives the data information of the air-conditioning load uploaded by the intelligent air-conditioning controller, aggregates the data information of the air-conditioning load and uploads it to the secondary dispatching platform;

[0092] S3: The secondary dispatching platform receives the data information of the air-conditioning load uploaded by the auxiliary controller at the station end, monitors all the air-conditioning loads within the jurisdiction online, and aggregates and analyzes the data information of the air-conditioning load based on the main transformer and feeder information of the distribution station building, taking the substation building as a unit to form an aggregation model of the air-conditioning load; at the same time, the secondary dispatching platform counts the total number of air-conditioning loads, the total number of powered-on units, and the real-time total load of all air-conditioning loads within the jurisdiction, queries the reserved margin locally, calculates the total load that can be reduced based on the reserved margin, and adds the total number of air-conditioning loads, the total number of powered-on units, the real-time total load, and the total load that can be reduced to the data information of the air-conditioning load; the secondary dispatching platform assembles the aggregation model and data information of the air-conditioning load into a json message;

[0093] S4: Wait until the message upload time arrives, and the secondary scheduling platform uploads the JSON message to the primary scheduling platform;

[0094] S5: The first-level dispatching platform stores and transfers the JSON message uploaded by the second-level dispatching platform.

[0095] 6. System Functions

[0096] The first-level dispatching platform counts the total number of air conditioners, the total number of air conditioners on, the real-time total load and the total load that can be adjusted down for all air-conditioning loads in the jurisdiction based on the aggregation model and data information of the air-conditioning load uploaded by the second-level dispatching platform in the jurisdiction, draws the real-time total load curve and the corresponding rated capacity line of each air-conditioning load, each substation, each second-level dispatching platform and the first-level dispatching platform in the jurisdiction, monitors the execution plan and execution results of each air-conditioning load for the air-conditioning cut-off instruction, and issues alarm reminders for fault conditions.

[0097] 1. Air conditioning load monitoring

[0098] (1) Key monitoring indicators

[0099] Real-time total load: the sum of the real-time loads of the air conditioners currently in operation.

[0100] Real-time total load of air conditioners that can be turned off at any time: the sum of the real-time loads of air conditioners that can be turned off at any time that are currently in operation.

[0101] Total real-time load of flexible switchable air conditioners: the sum of the real-time loads of the flexible switchable air conditioners currently in operation.

[0102] Rated Capacity: The total rated power of all air conditioning loads.

[0103] (2) Air conditioning load details

[0104] The real-time total load detailed data is displayed through a pop-up window.

[0105] The real-time total load of the air conditioner can be turned off at any time through a pop-up window.

[0106] The real-time total load of the flexible switchable air conditioner is displayed through a pop-up window.

[0107] (3) Observe real-time load changes

[0108] The real-time load of each air conditioning load and the corresponding rated capacity line are displayed in a curve form.

[0109] (4) Records of issuing, stopping and executing air conditioner cut-off instructions

[0110] Display the latest 10 air conditioner cut-off instructions and execution information.

[0111] Supports one-click stop control of air conditioner cut-off commands with status of "pending", "executing" and "pending recovery".

[0112] (5) Recovery failure alarm

[0113] Data that failed to be restored is displayed in red.

[0114] Failure to report recovery failure alarm.

[0115] 2. Policy Configuration

[0116] (1) Classification of air conditioning load

[0117] It is divided into two categories: flexible switchable air conditioners (need to set heating temperature start value and cooling temperature start value) and air conditioners that can be turned off at any time.

[0118] (2) It supports convenient and fast air conditioning type query solutions. It can freely combine mechanical energy such as power station voltage level, regional voltage level, substation terminal, name, air conditioning cut-off strategy, etc. to formulate air conditioning type query solutions.

[0119] 3. History

[0120] The records of air conditioning load aggregation dispatching instructions and execution status issued by the first-level dispatching platform and air conditioning removal instructions and execution status issued by the second-level dispatching platform are displayed.

[0121] (1) All instruction execution records showing the issuance and execution of instructions.

[0122] (2) Supports filtering records based on instruction type.

[0123] (3) Supports detailed viewing based on the air conditioning removal strategy.

[0124] (4) Supports convenient and fast instruction execution record query solutions, and can freely combine instruction type and actual execution time to formulate instruction execution record query solutions.

[0125] (5) Supports one-button stop control of air conditioner cut-off commands with status of "pending", "executing" or "pending recovery".

[0126] 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. A substation air conditioning load aggregation dispatching system, characterized by: The 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 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 command issued by the secondary dispatching platform, and the intelligent air-conditioning controller removes the air-conditioning load according to the air-conditioning removal command. The secondary dispatching platform and the station-side auxiliary controllers within the jurisdiction exchange data through the http protocol and restful interface, and different secondary dispatching platforms exchange data through E files; The secondary dispatching platform monitors all air-conditioning loads in the jurisdiction online based on the data information of air-conditioning loads uploaded by the station-side auxiliary controllers in the jurisdiction, aggregates and analyzes the data information of all air-conditioning loads in the jurisdiction to form an aggregation model of air-conditioning loads, uploads the aggregation model and data information of air-conditioning loads to the primary dispatching platform, receives and disassembles the air-conditioning load aggregation dispatching instructions issued by the primary dispatching platform, generates air-conditioning removal instructions for each station-side auxiliary controller in the jurisdiction according to the air-conditioning removal strategy, and issues air-conditioning removal instructions to the station-side auxiliary controllers; The primary dispatching platform exchanges data with at least some of the secondary dispatching platforms within its jurisdiction through the wide area service bus or DL476 forwarding method; the primary 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 secondary dispatching platforms within its jurisdiction, decomposes the control demand and generates air conditioning load aggregation dispatching instructions for each secondary dispatching platform within its jurisdiction, and issues the air conditioning load aggregation dispatching instructions to the secondary dispatching platforms; The air conditioning load aggregation scheduling instruction includes a preset instruction and an execution instruction. The preset instruction includes the air conditioning load aggregation scheduling target. The first-level scheduling platform first sends the preset instruction to the second-level scheduling platform. The second-level scheduling platform confirms that the air conditioning load aggregation scheduling target can be achieved according to the air conditioning load aggregation scheduling target and the air conditioning removal strategy, and then feeds back confirmation information to the first-level scheduling platform. After receiving the confirmation information, the first-level scheduling platform sends the execution instruction to the second-level scheduling platform. After receiving the execution instruction, the second-level scheduling platform sends the air conditioning removal instruction to the station-side auxiliary controller; the air conditioning removal instruction at least includes the aggregation scheduling information including the control object, control level, load removal amount, load removal start time and load removal duration. The control level represents the priority of the order of shutting down the air conditioning load. The air conditioning load with a higher priority is shut down first. The air conditioning load is divided into two categories according to the installation location: air conditioning that can be turned off at any time and flexible air conditioning that can be cut off. The air conditioning cut-off strategy is as follows: A1: The control level of shutting down the air conditioner at any time is higher than the control level of the flexible switchable air conditioner; A2: For turning off the air conditioner at any time, firstly, the air conditioner loads in operation are arranged from low to high according to the voltage level of the substation, and then the air conditioner loads are classified from low to high according to the voltage level of the region for each substation, and finally, the air conditioner loads are arranged from high to low according to the real-time load for each region voltage level. The lower the substation voltage level, the higher the control level, the lower the regional voltage level, the higher the control level, and the higher the real-time load, the higher the control level; among all the air conditioners that can be turned off at any time, the air conditioner load with the lowest substation voltage level, the lowest regional voltage level and the highest real-time load has the highest control level; A3: The flexible switchable air conditioner is provided with a heating temperature start value and a cooling temperature start value; during the execution of the air conditioning load aggregation scheduling instruction, if the ambient temperature is lower than the heating temperature start value of a certain flexible switchable air conditioner or higher than the cooling temperature start value, the flexible switchable air conditioner is forced to enter the heating mode or cooling mode, and the air conditioning load aggregation scheduling instruction is shielded; during the execution of the air conditioning load aggregation scheduling instruction, if the ambient temperature is between the heating temperature start value and the cooling temperature start value of a certain flexible switchable air conditioner, the flexible switchable air conditioner is allowed to be cut off; for the flexible switchable air conditioner that is allowed to be cut off, firstly according to the variable The power station voltage level is arranged from low to high to list the air conditioning loads in operation, and then the air conditioning loads are arranged from high to low according to the real-time load for each substation voltage level. The lower the substation voltage level, the higher the control level, and the higher the real-time load, the higher the control level; among all flexible switchable air conditioners, the air conditioning load with the lowest substation voltage level and the highest real-time load has the highest control level; during the execution of the air conditioning load aggregation dispatching instruction, the secondary dispatching platform uses a batch rotation strategy to remove all flexible switchable air conditioners that are allowed to be removed within the jurisdiction, and the flexible switchable air conditioners retain at least 50% margin; A4: After the execution period of the air conditioning load aggregation scheduling instruction ends, except for the flexible switchable air conditioners that are forced to enter the heating mode or cooling mode, all other air conditioning loads are restored to the state before the start of the air conditioning load aggregation scheduling instruction execution period. If the restoration fails, an alarm reminder is issued; The execution process of the air conditioning load aggregation scheduling instruction includes the following steps: S1: The first-level dispatching platform disassembles the control demand according to the aggregation model and data information of the air-conditioning load, generates the air-conditioning load aggregation dispatching instructions of each second-level dispatching platform within the jurisdiction, and sends the preset instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform, and the preset instructions include the air-conditioning load aggregation dispatching target; enter step S2; S2: The secondary dispatching platform receives the preset instruction issued by the primary dispatching platform, and determines whether the air conditioning load aggregation dispatching target can be achieved according to the total load removal amount: if it cannot be achieved, it returns to step S1; Otherwise, the secondary dispatching platform feeds back confirmation information to the primary dispatching platform and enters step S3; S3: The first-level dispatching platform sends the execution instructions in the air-conditioning load aggregation dispatching instructions to each second-level dispatching platform; S4: The secondary dispatching platform receives the execution instruction issued by the primary dispatching platform, disassembles the air-conditioning load aggregation dispatching target, selects the air-conditioning load to be removed according to the air-conditioning removal strategy, and generates the air-conditioning removal instruction of each station-side auxiliary controller within the jurisdiction, wherein the air-conditioning removal instruction at least includes the aggregation dispatching information including the control object, control level, load removal amount, load removal start time and load removal duration; and proceeds to step S5; S5: Wait until the air conditioner cut-off instruction execution time arrives, and the secondary dispatching platform sends the air conditioner cut-off instruction to each station-side auxiliary controller; then proceed to step S6; S6: The station-side auxiliary controller receives the air conditioning cut-off instruction issued by the secondary dispatching platform, and the intelligent air conditioning controller executes the air conditioning cut-off instruction; then proceeds to step S7; S7: Wait until the delay time arrives, and the secondary scheduling platform inspects the execution results to determine whether all the removals are completed: if all the removals are completed, go to step S8; otherwise, count the number of inspections, and if it reaches the set value, go to step S8, otherwise repeat step S7; S8: The secondary scheduling platform uploads the execution result to the primary scheduling platform; proceed to step S9; S9: The first-level dispatching platform receives the execution result uploaded by the second-level dispatching platform; and proceeds to step S10; S10: Wait until the load shedding duration is reached. Except for the flexible switchable air conditioner that is forced into the heating mode or cooling mode, all other air conditioning loads are restored to the state before the execution of step S5. If the restoration fails, an alarm reminder is issued.

2. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: From all the secondary dispatching platforms within the jurisdiction of the primary dispatching platform, some secondary dispatching platforms are selected to directly exchange data with the primary dispatching platform, and the remaining secondary dispatching platforms are selected to indirectly exchange data with the primary dispatching platform through these secondary dispatching platforms.

3. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: It also includes intelligent auxiliary modules for power transformation and distribution. Each intelligent auxiliary module for power transformation and distribution serves one or more secondary dispatching platforms. The intelligent auxiliary module for power transformation and distribution is used as an access service for data interaction between the secondary dispatching platform and the intelligent air-conditioning controller. The secondary dispatching platform and the intelligent auxiliary module for power transformation and distribution exchange data through the http protocol and the restful interface, and the intelligent auxiliary module for power transformation and distribution exchange data with the station-side auxiliary controller through the http protocol and the restful interface.

4. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: It also includes a centralized control intelligent auxiliary module. Each power transformation and distribution intelligent auxiliary module serves all intelligent air-conditioning controllers within the jurisdiction of a secondary dispatching platform. The power transformation and distribution intelligent auxiliary modules are stored in partitions, corresponding one to one to the intelligent air-conditioning controllers they serve. The centralized control intelligent auxiliary module is used as an access service for data interaction between the secondary dispatching platform and the intelligent air-conditioning controllers. Each centralized control intelligent auxiliary module interacts with at least two secondary dispatching platforms, and at least one secondary dispatching platform is able to directly interact with the primary dispatching platform. The secondary dispatching platform and the centralized control intelligent auxiliary module interact with data through E files, and the centralized control intelligent auxiliary module interacts with the station-side auxiliary controller through the http protocol and the restful interface.

5. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: The air conditioner that can be turned off at any time is installed in the inspection robot room, drone room, conference room, dormitory, data room, safety equipment room, spare room, office, hall, lounge, kitchen, restaurant, guard room, duty room or activity room; the flexible and switchable air conditioner is installed in the main control room, control room, high-voltage room, relay protection room, protection room, switch room, monitoring room, communication room, reactor room, communication room, data center, high-voltage room or battery room.

6. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: The data flow process of the air conditioning load data information includes the following steps: S1: The intelligent air conditioning controller collects data information of the air conditioning load and uploads it to the station-side auxiliary controller; the data information of the air conditioning load includes basic parameters of the air conditioning, on / off status and real-time load; S2: The station-side auxiliary controller receives the data information of the air-conditioning load uploaded by the intelligent air-conditioning controller, aggregates the data information of the air-conditioning load and uploads it to the secondary dispatching platform; S3: The secondary dispatching platform receives the data information of the air-conditioning load uploaded by the auxiliary controller at the station end, monitors all the air-conditioning loads within the jurisdiction online, and aggregates and analyzes the data information of the air-conditioning load based on the main transformer and feeder information of the distribution station building, taking the substation building as a unit to form an aggregation model of the air-conditioning load; at the same time, the secondary dispatching platform counts the total number of air-conditioning loads, the total number of powered-on units, and the real-time total load of all air-conditioning loads within the jurisdiction, queries the reserve margin locally, calculates the total load that can be reduced based on the reserve margin, and adds the total number of air-conditioning loads, the total number of powered-on units, the real-time total load, and the total load that can be reduced to the data information of the air-conditioning load; The secondary dispatching platform assembles the aggregation model and data information of air conditioning load into a JSON message; S4: Wait until the message upload time arrives, and the secondary scheduling platform uploads the JSON message to the primary scheduling platform; S5: The first-level dispatching platform stores and transfers the JSON message uploaded by the second-level dispatching platform.

7. The substation air conditioning load aggregation dispatching system according to claim 1 is characterized by: The first-level dispatching platform counts the total number of air conditioners, the total number of air conditioners turned on, the real-time total load and the total load that can be adjusted down of all air-conditioning loads in the jurisdiction based on the aggregation model and data information of the air-conditioning load uploaded by the second-level dispatching platform in the jurisdiction, draws the real-time total load curve and the corresponding rated capacity line of each air-conditioning load, each substation, each second-level dispatching platform and the first-level dispatching platform in the jurisdiction, monitors the execution plan and execution result of each air-conditioning load for the air-conditioning cut-off instruction, and issues an alarm for fault conditions.

Images