Building power load dynamic regulation and control system

Abstract

The invention discloses a building power load dynamic regulation and control system, which belongs to the technical field of power utilization of a power system, and comprises a data processing device capable of collecting data and dynamically regulating the operation state of load equipment according to a regulation and control instruction, the data analysis device can process the operation data; the regulation and control scheduling device can generate a regulation and control instruction for regulating and controlling a certain number of load devices in the priority sequence table according to a sequence or an inverted sequence mode through a scheduling algorithm; a load threshold value of the current building and a priority sequence table arranged according to the regulation and control characteristics of load equipment in the current building are further preset in the regulation and control scheduling device; according to the system, dynamic adjustment of the power load in the building can be achieved by adopting a simple algorithm, meanwhile, regulation and control objects of the system are diversified and are not limited to a central air conditioner with a host, and the defects that existing power load regulation and control are high in use cost and single in regulation and control object are overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of power system electricity consumption, and in particular relates to a building power load dynamic control system. Background Art

[0002] The regulation of building power load is crucial to the economic and efficient operation of urban power grids. By adjusting the building power load, the peak load of the power grid can be reduced and the flexibility of the power grid can be improved.

[0003] With the development of society and the advancement of technology, many buildings have installed intelligent control equipment and systems. These systems are involved in the power monitoring and switch control of many electrical equipment in the building, making dynamic regulation possible. However, these devices and systems themselves do not have dynamic regulation capabilities and often require manual intervention.

[0004] In the current power system, the control center usually specifies the response power status of various power-consuming devices to achieve the purpose of balancing the power load. The designated power-consuming devices are shut down by the management personnel for a period of time to respond.

[0005] In some buildings equipped with specific intelligent building systems, batch control and scene mode are also used to issue one-time instructions. Scene mode is essentially a batch control device. The approximate timing diagram is as follows: Figure 1 However, the batch control method of equipment switching has the following main disadvantages:

[0006] 1. Since the equipment to be turned off is manually selected, it is impossible to accurately control the number of switchgear required, which in turn affects the comfort and energy consumption of building use;

[0007] 2. Batch control instructions are mostly issued as one-time operations, and there is no status monitoring method. Therefore, if the device is reopened by others without authorization during the control period, it will not only affect the control effect, but also easily cause other devices to be turned on and off blindly.

[0008] Most of the existing load control target devices are central air conditioners, because central air conditioners occupy a large proportion of the load and have a relatively outstanding control effect. The load control implementation scheme for central air conditioners is disclosed in the invention patent with application number 201210364602.6, which discloses a commercial building central air conditioner load control system and method that interacts with the power grid. The scheme adopts a strategic plan expert library, combines environmental sensors, air conditioning management systems, load control terminals and smart meters to adjust the parameters of the central air conditioner host. Although it realizes automatic load control, it also has the following shortcomings:

[0009] 1. It is necessary to use a strategic plan expert database, which will greatly increase the difficulty and cost of using the system;

[0010] 2. Environmental sensors need to be installed to assist. A large number of environmental sensors need to be installed in a building, which is not economically efficient. The benefits of load regulation may not be enough to offset the hardware installation costs.

[0011] 3. The host parameters can only be adjusted for the central air-conditioning system, and cannot be adjusted for other intelligent electrical equipment such as VRV air conditioners, single air conditioners, lighting, elevators, etc.

[0012] Based on the above analysis, there is an urgent need for a control system and method that can continuously monitor and dynamically adjust the building power load. Summary of the invention

[0013] The purpose of the present invention is to provide a building power load dynamic control system to solve the shortcomings of the existing power load control system, such as high cost and single control object.

[0014] In order to solve the above problems, the present application provides a building power load dynamic control system, comprising:

[0015] A data processing device, the data processing device comprises a collection unit and a processing unit, the collection unit is used to collect the operation data of the load device, the processing unit can transfer and upload the operation data, and at the same time, can dynamically adjust the operation state of the load device according to the control instruction;

[0016] A data analysis device, the data analysis device is used to process and analyze the operation data uploaded from the data processing device, and obtain the load data of the building according to the operation data, and store the load data and the analyzed operation data after adding a collection timestamp;

[0017] A control and scheduling device, the control and scheduling device comprises a pre-storage unit and a control command generation unit, wherein the pre-storage unit at least presets a load threshold of a building and a priority sequence table of adjustable load devices, and the control command generation unit can periodically retrieve the load data and operation data of the building in the data analysis device, and generate control instructions through a scheduling algorithm that can control a certain number of load devices in the priority sequence table in sequential or reverse order.

[0018] As the preferred solution of this application:

[0019] During a control process, the control command generation unit can also monitor the operating status of the corresponding load device after control based on the retrieved operating data and the control instructions generated for the first time. If the operating status changes, a control instruction to restore the operating status is generated to adjust the load device to the operating status it should have.

[0020] As the preferred solution of this application:

[0021] The load data at least includes the total load data of the building, the sub-item load data and the power data of each load device in the corresponding mode; the load threshold at least includes the total load threshold, and the total load threshold includes the target value and the upper and lower limit values;

[0022] The scheduling algorithm specifically includes:

[0023] Step S1: Determine whether the real-time total load of the current building is less than the lower limit of the preset total load threshold. If so, calculate the load difference between the real-time total load and the lower limit of the total load threshold, and generate a control instruction to restore the operating status of M load devices in the priority sequence table in reverse order. If not, proceed to the next step.

[0024] Step S2: Determine whether the real-time total load of the current building is greater than the preset target value of the total load threshold. If not, wait for a specified period of time before entering the next control process to continue monitoring the total load of the building. If yes, proceed to the next step.

[0025] Step S3: Calculate the load difference between the real-time total load of the current building and the target value of the total load threshold, and select N load devices in the priority sequence table according to the priority order, and at the same time, generate control instructions for regulating the operating status of the N load devices.

[0026] As the preferred solution of this application:

[0027] In step S3, if the number of load devices in the priority sequence table is less than N, the current number of load devices is adjusted, and data is read cyclically to ensure that the current number of load devices are all in a control state until the scheduling process ends.

[0028] As the preferred solution of this application:

[0029] In step S3, if there is a load device whose operating state is off among the N load devices selected sequentially, it is replaced in sequence until the sum of the loads of the N load devices is greater than or equal to the load difference.

[0030] As the preferred solution of this application:

[0031] In step S1, if there is a load device whose operating state is turned on among the M load devices selected in reverse order, it is replaced in sequence until the sum of the loads of the M load devices is greater than or equal to the load difference.

[0032] As the preferred solution of this application:

[0033] The pre-storage unit also presets the control duration of each load device.

[0034] As the preferred solution of this application:

[0035] The operating state of the load device is dynamically adjusted according to the control instruction, and the operating state includes a switch state or an operating mode of the load device.

[0036] As the preferred solution of this application:

[0037] The load equipment includes one or more of an air-conditioning system, a lighting system, an intelligent circuit breaker system and an elevator system.

[0038] As the preferred solution of this application:

[0039] The priority sequence table divides the load devices into different priority levels according to their control characteristics, wherein the control characteristics of the load devices include at least four types: controllable at any time, controllable, delayable control and forced control.

[0040] Compared with the prior art, the advantages of the building power load dynamic control system of the present application are:

[0041] The system includes a data processing device capable of collecting data and dynamically adjusting the operating status of load devices according to control instructions, a data analysis device capable of processing operating data, and a control and scheduling device capable of generating control instructions for controlling a certain number of load devices in a priority sequence list in a sequential or reverse order through a scheduling algorithm. The control and scheduling device is also preset with a load threshold of the current building. At the same time, the control and scheduling device is preset with a priority sequence list that divides the load devices in the current building into different priority levels according to their control characteristics. When in use, the data processing device and the data analysis device obtain real-time operating data and load data of the building, the control and scheduling device periodically retrieves the load data and operating data of the building in the data analysis device, and uses a scheduling algorithm to generate control instructions that can control a certain number of load devices in the priority sequence list in a sequential or reverse order. The operating status of a certain number of load devices in the priority sequence list can be adjusted through the control instructions, thereby Dynamic regulation of electric load is realized, wherein the scheduling algorithm mainly includes determining what kind of regulation instruction to generate by comparing the real-time load data of the building with the preset load threshold; that is, the system of the present application mainly calculates the real-time load difference of the building to determine the load equipment whose operating status needs to be adjusted in the priority sequence table and then dynamically adjusts the electric load. It can be seen that the system of the present application adopts a simple algorithm to realize the dynamic adjustment of the electric load in the building. On the one hand, this reduces the use cost and structure of the system, and on the other hand, it can make real-time dynamic adjustments to improve the adaptability and comfort of the building. At the same time, the regulation object of the system of the present application is the terminal control structure (switch) that can control the start and stop and mode conversion of the corresponding load equipment, rather than the host parameters. In this way, the type of load equipment to be regulated can be more flexible, and is not limited to central air conditioners with hosts, thereby increasing the flexibility and significance of building load regulation; solving the shortcomings of high use cost and single regulation object in the existing electric load regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of existing power load adjustment provided by an embodiment of the present invention.

[0043] Figure 2 A structural diagram of a building power load dynamic control system provided in an embodiment of the present invention.

[0044] Figure 3 A flowchart of a scheduling algorithm provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0046] like Figure 1The present embodiment provides a building power load dynamic control system, comprising: a data processing device, a data analysis device and a control and dispatch device; wherein the data processing device comprises a collection unit and a processing unit, the collection unit is used to collect the operating data of the load device, in this embodiment, the operating data comprises the switch state, operating power and operating mode of the load device; the processing unit first converts the operating data to ensure that it can be recognized by the data analysis device, and then stores and uploads the converted operating data, and at the same time, the processing unit can also dynamically adjust the operating state of the load device according to the control instruction, in this embodiment, the operating state comprises the switch state or operating mode of the load device, that is, through the control The command adjusts the switch state and operation mode of the corresponding load device to realize dynamic adjustment of the power load; the data analysis device receives the operation data uploaded by the data processing device and corrects it by means of data cleaning and data filtering, and at the same time, obtains the load data of the building according to the operation data, adds the load data and the analyzed operation data to the collection timestamp and stores them in the device. In this embodiment, the load data obtained according to the operation data at least includes the total load data of the building, the sub-item load data and the power data of each load device in the corresponding mode, and if necessary, it may also include the current load data of each load device; the control and dispatching device includes a pre-storage unit and a control command generation unit, and the pre-storage unit generates a control command. The storage unit is pre-set with at least the load threshold of the building and the priority sequence table of the adjustable load equipment. In this embodiment, the control time of each load equipment is also pre-set. In this embodiment, the data stored in the pre-storage unit can be dynamically adjusted as needed. The control command generation unit can periodically (the retrieval cycle is usually 1min / time) retrieve the load data and operation data of the building in the data analysis device, and generate a control instruction that can control a certain number of load devices in the priority sequence table in sequence or reverse order through the scheduling algorithm; in this embodiment, the load threshold is used as a reference object for the building load data to ensure that the current load data of the building is within the load threshold range. The load threshold at least includes the total load threshold. The total load The load threshold value includes a target value and an upper limit and a lower limit. By setting the upper limit and the lower limit of the total load threshold, it is possible to ensure that the load equipment in the building has a certain amount of flexible adjustment space. The priority sequence table is divided into different priority levels according to the control characteristics of the load equipment. Among them, the control characteristics of the load equipment include four types: controllable at any time, controllable, delayed control and forced control. By setting the priority sequence table, on the one hand, only the load equipment in the priority sequence table can be controlled without affecting the normal use of other load equipment not preset in the priority sequence table, thereby ensuring that the load equipment in the key position is not affected. On the other hand, the load in the building can be effectively and reasonably distributed to improve the adaptability and comfort of the building.By limiting the control time of each load device, on the one hand, it can ensure that the load device is effectively controlled within the specified time, and on the other hand, it can ensure the effective use of the load device, further improving the adaptability and comfort of the building. ;

[0047] In this embodiment, the scheduling algorithm specifically includes: Figure 3 As shown,

[0048] Step S1: Determine the real-time total load of the current building (hereinafter referred to as P 总 ) is less than the preset lower limit of the total load threshold (hereinafter referred to as P), if so, calculate the real-time total load P 总 The load difference ΔP between the lower limit value P of the total load threshold is calculated, and a control instruction is generated to restore the operating status of M (M≥1) load devices in the priority sequence table in reverse order. If not, proceed to the next step;

[0049] In this step, the real-time total load P of the current building is obtained. 总 It is compared with the lower limit value P of the preset total load threshold. If it is less than, it means that the current load of the building is small. At this time, in order to improve the comfort of the building, the operating status of some equipment can be restored. This embodiment preferably adopts a reverse recovery method. If there is a load device with an operating status of on among the M load devices selected in reverse order, it is replaced in sequence until the sum of the loads of the M load devices is greater than or equal to the load difference. The processing unit in the data processing device can control the M load devices to resume the operating status of the startup or normal operating mode after receiving the control instruction. Specifically, when the regulated load device is in the off state, it is restored to the startup state; when the regulated load device is in the low-power saving mode, it is restored to the normal operating state.

[0050] Step S2: Determine the real-time total load P of the current building 总 Is it greater than the preset total load threshold target value (hereinafter referred to as P 目 ), if not, wait for a specified period of time before entering the next control process to continue monitoring the real-time total load of the building; if yes, proceed to the next step;

[0051] In this step, if the real-time total load P of the current building 总 The target value P is not greater than the preset total load threshold 目 , it means that the real-time total load value of the current building satisfies the following relationship P<P 总 ≤P 目 At this time, the current control process is completed, and the next control process is entered after waiting for the specified time. The waiting time can be 1-3 minutes.

[0052] Step S3: Calculate the real-time total load P of the current building 总The target value P of the total load threshold 目 The load difference ΔP between the load devices is obtained, and N (N≥1) load devices are selected in the priority sequence table according to the priority order, and at the same time, a control instruction for regulating the operating status of the N load devices is generated;

[0053] In this step, when ΔP is a positive number, it means that the real-time total load of the building P 总 is greater than a preset target value. At this time, the control and scheduling device selects N load devices in the priority sequence table according to the priority order to adjust the operating status to reduce the building load. In the process of selecting N load devices, if the number of load devices in the priority sequence table is less than N, the current number of load devices is adjusted, and the data is read cyclically to ensure that the current number of load devices are all in the control state until the scheduling process ends; if there are load devices with a closed operating status among the N load devices selected in sequence (that is, the load device is closed or the power is 0), they are replaced in sequence until the sum of the loads of the N load devices is greater than or equal to the load difference; the processing unit in the data processing device adjusts the operating status of the N load devices according to the received control instructions, including shutting down the load device or adjusting it to a low-power saving mode, which is specifically determined according to the load difference. In order to ensure the comfort of the building, this embodiment preferably only adjusts the load device to the power saving mode.

[0054] It should be noted that the above method is an operation flow of a control process. When the scheduling algorithm is used to control the total load value to satisfy the following relationship P<P 总 ≤P 目 When the mode is displayed, it means that the current control process is completed. After waiting for the specified time, it will enter the next control process again to continue monitoring the total load data of the building and realize dynamic adjustment of the power load.

[0055] Before step S1, it can be determined whether the system has reached the end time of regulation, that is, the regulation operation of the system in this embodiment is within a specified time, such as rush hour or a time period with higher temperature, so that effective regulation of the power load can be achieved; specifically, if the end time of regulation is reached, the regulation operation is terminated, and if the end time of regulation is not reached, the scheduling algorithm program is entered.

[0056] In this embodiment, the control object of the system is the terminal control structure (switch) that can control the start and stop and mode conversion of the corresponding load equipment, rather than the host parameters. Therefore, in this embodiment, the load equipment includes one or more of the air-conditioning system, lighting system, intelligent circuit breaker system and elevator system.

[0057] When this embodiment is used specifically, the data processing device and the data analysis device obtain the real-time operation data and load data of the building, the control and dispatching device periodically retrieves the load data and operation data of the building in the data analysis device, and uses the dispatching algorithm to generate a control instruction that can control a certain number of load devices in the priority sequence table in a sequential or reverse manner. The operation status of a certain number of load devices in the priority sequence table can be adjusted through the control instruction, thereby realizing dynamic control of the power load. Among them, the dispatching algorithm mainly includes comparing the real-time load data of the building with the preset load threshold to determine what kind of control instruction to generate; that is, the system of this embodiment mainly calculates the building's The real-time load difference is used to determine the load equipment that needs to adjust the operating status in the priority sequence table, and then dynamically adjust the power load; it can be seen that the system of the present embodiment can realize the dynamic adjustment of the power load in the building with a simple algorithm, which reduces the use cost and structure of the system on the one hand, and can make real-time dynamic adjustments on the other hand to improve the adaptability and comfort of the building. At the same time, the control object of the system of the present embodiment is the terminal control structure (switch) that can control the start and stop and mode conversion of the corresponding load equipment, rather than the host parameters. This makes the type of load equipment that can be controlled more flexible, and is not limited to central air conditioners with host machines, thereby increasing the flexibility and significance of building load control.

[0058] As a preferred embodiment of the present application, during a control process, the control command generation unit can also monitor the operating status of the corresponding load device after control based on the retrieved operating data and the control instructions generated for the first time. If the operating status changes, a control instruction for restoring the operating status is generated to adjust the load device to the operating status it should have.

[0059] Specifically, in actual use, after some devices are turned off during the load control process, others may reopen them in an unauthorized state, which will not only affect the control effect. In view of this phenomenon, the present implementation uses a control command generation unit to monitor the operating status of the corresponding load device after being controlled according to the retrieved operating data and the control instruction generated for the first time. If the operating status of the load device after being controlled changes during the current control process, it means that someone has reopened it in an unauthorized state. Therefore, a control instruction for restoring the operating status is generated. The processing unit in the data processing device can control the corresponding load device to the operating status it should currently have according to the control instruction, thereby improving the control effect and avoiding the occurrence of human error operations.

[0060] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A building power load dynamic control system, Features: include, A data processing device, the data processing device comprises a collection unit and a processing unit, the collection unit is used to collect the operation data of the load device, the processing unit can transfer and upload the operation data, and at the same time, can dynamically adjust the operation state of the load device according to the control instruction; A data analysis device, the data analysis device is used to process and analyze the operation data uploaded from the data processing device, and obtain the load data of the building according to the operation data, and store the load data and the analyzed operation data after adding a collection timestamp; A control and scheduling device, the control and scheduling device comprises a pre-storage unit and a control command generation unit, wherein the pre-storage unit at least presets a load threshold of a building and a priority sequence table of adjustable load devices, and the control command generation unit can periodically retrieve the load data and operation data of the building in the data analysis device, and generate control instructions through a scheduling algorithm that can control a certain number of load devices in the priority sequence table in sequential or reverse order.

2. The building power load dynamic control system according to claim 1, Features: During a control process, the control command generation unit can also monitor the operating status of the corresponding load device after control based on the retrieved operating data and the control instructions generated for the first time. If the operating status changes, a control instruction to restore the operating status is generated to adjust the load device to the operating status it should have.

3. The building power load dynamic control system according to claim 1, Features: The load data at least includes the total load data of the building, the sub-item load data and the power data of each load device in the corresponding mode; the load threshold at least includes the total load threshold, and the total load threshold includes the target value and the upper and lower limit values; The scheduling algorithm specifically includes: Step S1: Determine whether the real-time total load of the current building is less than the lower limit of the preset total load threshold. If so, calculate the load difference between the real-time total load and the lower limit of the total load threshold, and generate a control instruction to restore the operating status of M load devices in the priority sequence table in reverse order. If not, proceed to the next step. Step S2: Determine whether the real-time total load of the current building is greater than the preset target value of the total load threshold. If not, wait for a specified period of time before entering the next control process to continue monitoring the total load of the building. If yes, proceed to the next step. Step S3: Calculate the load difference between the real-time total load of the current building and the target value of the total load threshold, and select N load devices in the priority sequence table according to the priority order, and at the same time, generate control instructions for regulating the operating status of the N load devices.

4. The building power load dynamic control system according to claim 3, Features: In step S3, if the number of load devices in the priority sequence table is less than N, the current number of load devices is adjusted, and data is read cyclically to ensure that the current number of load devices are all in a control state until the scheduling process ends.

5. The method for dynamic control of building power load according to claim 3, Features: In step S3, if there is a load device whose operating state is off among the N load devices selected sequentially, it is replaced in sequence until the sum of the loads of the N load devices is greater than or equal to the load difference.

6. The method for dynamic control of building power load according to claim 3, Features: In step S1, if there is a load device whose operating state is turned on among the M load devices selected in reverse order, it is replaced in sequence until the sum of the loads of the M load devices is greater than or equal to the load difference.

7. The method for dynamic control of building power load according to claim 1, Features: The pre-storage unit also presets the control duration of each load device.

8. The method for dynamic control of building power load according to claim 1, Features: The operating state of the load device is dynamically adjusted according to the control instruction, and the operating state includes a switch state or an operating mode of the load device.

9. The building power load dynamic control system according to claim 1, Features: The load equipment includes one or more of an air-conditioning system, a lighting system, an intelligent circuit breaker system and an elevator system.

10. The building power load dynamic control system according to claim 1, Features: The priority sequence table divides the load devices into different priority levels according to their control characteristics, wherein the control characteristics of the load devices include at least four types: controllable at any time, controllable, delayable control and forced control.

Images