Energy storage system configuration method of direct current elevator, elevator control method, configuration device and control device

Abstract

The invention relates to the technical field of elevator energy conservation, and particularly discloses an energy storage system configuration method of a direct-current elevator, an elevator control method, a configuration device and a control device, and the configuration method comprises the steps that historical operation data of the elevator is obtained; determining power consumption data based on the historical operation data; determining normal consumption data and limit consumption data based on the power consumption data; obtaining a basic configuration unit, and determining basic energy storage parameters of the basic configuration unit; and determining a configuration scheme of the energy storage system based on the conventional consumption data, the limit consumption data and the basic energy storage parameters. The energy storage system is configured for the elevator according to the actual operation data and the optimal cost of the elevator, so that the elevator is allowed to operate at the optimal cost, the operation cost of the elevator is greatly reduced, and the actual requirements of users are met.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator energy saving, and in particular to a method for configuring an energy storage system of a direct current elevator, an elevator control method, a device for configuring an energy storage system of a direct current elevator, and an elevator control device. Background Art

[0002] In modern urban buildings, elevators are key facilities for vertical transportation, and their safety, comfort and energy efficiency have always been important considerations in design and manufacturing. In traditional elevator power supply methods, AC power supply systems are basically used because AC has good energy transmission advantages.

[0003] However, with the continuous development of new energy technologies, DC power supply equipment and energy storage equipment are increasingly being deployed in people's daily lives, which has affected the power supply method of elevators. At the same time, due to the excellent starting and braking performance, smooth speed control and high efficiency of DC elevators, they meet higher customer requirements for actual elevator riding experience.

[0004] In actual application, the current DC elevators mainly use the power conversion of the mains to convert AC power into DC power for powering the DC elevators. However, since the mains adopts a market-based fluctuating electricity price plan, direct access to the mains power supply is not economical enough. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems existing in the prior art, the embodiments of the present invention provide a method for configuring an energy storage system of a DC elevator, an elevator control method, a configuration device, and a control device. By configuring an energy storage system for the elevator according to the actual operation data of the elevator and the optimal cost, the elevator is allowed to operate at the optimal cost, which greatly reduces the operation cost of the elevator and meets the actual needs of users.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a method for configuring an energy storage system of a DC elevator, the configuration method comprising: obtaining historical operation data of the elevator; determining power consumption data based on the historical operation data; determining normal consumption data and limit consumption data based on the power consumption data; obtaining a basic configuration unit, and determining a basic energy storage parameter of the basic configuration unit; and determining a configuration scheme of the energy storage system based on the normal consumption data, the limit consumption data and the basic energy storage parameters.

[0007] Preferably, the configuration method also includes: after determining the power consumption data, judging whether the data volume of the power consumption data reaches a preset data volume; if it does not reach the preset data volume, performing data interpolation operation on the power consumption data to obtain preliminary consumption data after interpolation; if it reaches the preset data volume, performing data denoising processing on the power consumption data to obtain denoised data, and performing smoothing processing on the denoised data to obtain processed power consumption data.

[0008] Preferably, the conventional consumption data includes conventional current consumption and conventional power consumption, the extreme consumption data includes extreme current consumption and extreme power consumption, and the method of determining the configuration scheme of the energy storage system based on the conventional consumption data, the extreme consumption data and the basic energy storage parameters includes: determining the conventional scheme of the energy storage system based on the conventional current consumption, the conventional power consumption and the basic energy storage parameters; determining the extreme scheme of the energy storage system based on the extreme current consumption, the extreme power consumption and the basic energy storage parameters; determining the conventional configuration cost of the conventional scheme and the extreme configuration cost of the extreme scheme; obtaining the expected configuration cost, adjusting the extreme scheme based on the expected configuration cost, the conventional configuration cost and the extreme configuration cost, and generating a configuration scheme for the energy storage system.

[0009] Preferably, the adjusting the extreme scheme based on the expected configuration cost, the conventional configuration cost and the extreme configuration cost to generate a configuration scheme for the energy storage system includes: determining a first power supply cost corresponding to the conventional scheme, and a second power supply cost corresponding to the extreme scheme; determining a cost deviation between the first power supply cost and the second power supply cost; determining a cost recovery period based on the conventional configuration cost, the extreme configuration cost and the cost deviation; determining an optimal cost scheme based on the cost recovery period; and adjusting the extreme scheme based on the expected configuration cost and the optimal cost scheme to generate a configuration scheme for the energy storage system.

[0010] On the other hand, an embodiment of the present invention provides a control method for an elevator, the elevator including an energy storage system, the energy storage system being configured according to the configuration method described in the embodiment of the present invention, the control method comprising: determining a current power supply period; if the current power supply period is in a preset low electricity price period, controlling the elevator to connect to an external power supply and disconnecting the energy storage system; if the current power supply period is not in the preset low electricity price period, obtaining the power of the energy storage system, and controlling the elevator to connect to the energy storage system or the external power supply based on the power.

[0011] Preferably, controlling the elevator to connect to the energy storage system and / or the external power supply based on the power supply includes: if the power supply is greater than a preset limit, controlling the elevator to connect to the energy storage system and disconnecting the external power supply; if the power supply is less than or equal to the preset limit, controlling the elevator to connect to the external power supply and disconnecting the energy storage system.

[0012] Preferably, the control method also includes: obtaining at least one low-cost DC power supply, the power supply cost of the low-cost DC power supply being lower than the power supply cost of the external power supply; obtaining a first power supply cost of each low-cost DC power supply; obtaining an energy consumption rate of the energy storage system, and determining a converted power supply cost based on the first power supply cost and the energy consumption rate; obtaining the power supply demand of the elevator and the charging demand of the energy storage system; and controlling the low-cost DC power supply to supply power to the elevator and the energy storage system based on the converted power supply cost, the power supply demand and the charging demand.

[0013] Preferably, the controlling all low-cost DC power supplies to supply power to the elevator and the energy storage system based on the discounted power supply cost, the power supply demand and the charging demand includes: obtaining a second power supply cost of the external power supply; dividing all low-cost DC power supplies into a first power supply and a second power supply based on the second power supply cost and the discounted power supply cost, the discounted power supply cost of the second power supply being less than the second power supply cost; controlling all low-cost DC power supplies to supply power to the elevator based on the power supply demand; and controlling the second power supply to supply power to the energy storage system based on the charging demand.

[0014] Correspondingly, the present invention also provides a device for configuring an energy storage system of a DC elevator, the configuration device comprising: a data acquisition unit for acquiring historical operation data of the elevator; a consumption determination unit for determining power consumption data based on the historical operation data; a consumption calculation unit for determining normal consumption data and limit consumption data based on the power consumption data; a configuration acquisition unit for acquiring a basic configuration unit and determining basic energy storage parameters of the basic configuration unit; a configuration unit for determining a configuration scheme of the energy storage system based on the normal consumption data, the limit consumption data and the basic energy storage parameters.

[0015] Correspondingly, the present invention also provides a control device for an elevator, the elevator including an energy storage system, the control device including: a time period determination unit, used to determine a current power supply time period; a first control unit, used to control the elevator to connect to an external power supply and disconnect the energy storage system when the current power supply time period is in a preset low electricity price time period; a second control unit, used to obtain the power of the energy storage system when the current power supply time period is not in the preset low electricity price time period, and control the elevator to connect to the energy storage system or the external power supply based on the power.

[0016] Through the technical solution provided by the present invention, the present invention has at least the following technical effects: By configuring the energy storage system with the best cost-effectiveness for users based on the historical operating conditions of the elevator and the actual configuration cost of the battery, the elevator master control intelligently controls the elevator to access the external power supply and energy storage device according to the actual electricity cost and the maximum service life of the energy storage device, thereby achieving low-cost elevator operation, effectively reducing the elevator operating cost and meeting the actual needs of users.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a specific implementation flow chart of the energy storage system configuration method of a DC elevator provided by an embodiment of the present invention;

[0020] Figure 2 is a specific implementation flow chart of the elevator control method provided by an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of an energy storage system configuration device for a DC elevator provided in an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a control device for an elevator provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0024] The terms "system" and "network" in the embodiments of the present invention can be used interchangeably. "Multiple" means two or more than two. In view of this, "multiple" can also be understood as "at least two" in the embodiments of the present invention. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship. In addition, it should be understood that in the description of the embodiments of the present invention, the words "first", "second", etc. are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0025] See also Figure 1 The embodiment of the present invention provides a method for configuring an energy storage system of a DC elevator, the configuration method comprising: S10) Obtaining historical operation data of the elevator; S20) determining power consumption data based on the historical operation data; S30) determining normal consumption data and limit consumption data based on the power consumption data; S40) Acquire a basic configuration unit and determine a basic energy storage parameter of the basic configuration unit; S50) Determining a configuration scheme of an energy storage system based on the normal consumption data, the limit consumption data and the basic energy storage parameters.

[0026] In a possible implementation, historical operation data of the elevator is first obtained, and then power consumption data is determined based on the historical operation data. Specifically, the historical operation data of the elevator in the previous year can be obtained, and the power consumption of the elevator in each time period (for example, 1 day, 1 week or 1 month, etc.) can be obtained, and the power consumption data is generated.

[0027] However, in actual application, on the one hand, the historical operation data of the elevator may be missing or erroneous, which will affect the subsequent data analysis; on the other hand, the historical operation data of the elevator may not be sufficient to provide sufficient data support for subsequent data analysis.

[0028] In order to solve the above technical problems, in an embodiment of the present invention, the configuration method also includes: after determining the power consumption data, judging whether the data amount of the power consumption data reaches a preset data amount; if it does not reach the preset data amount, performing data interpolation operation on the power consumption data to obtain preliminary consumption data after interpolation; if it reaches the preset data amount, performing data denoising processing on the power consumption data to obtain denoised data, and performing smoothing processing on the denoised data to obtain processed power consumption data.

[0029] In a possible implementation, after the power consumption data is preliminarily determined, it is further determined whether the amount of power consumption data reaches a preset amount of data, for example, the preset amount of data is set to 300 data items, that is, at least 300 days of data in a year meet the needs of subsequent data analysis. If the preset amount of data is not reached, a data interpolation operation is performed on the preliminarily acquired power consumption data. In a specific implementation process, a simulation trend analysis can be performed based on the daily operation data of the current elevator, and the power consumption data can be interpolated according to the simulation trend; or based on big data analysis of elevators with similar operating conditions to the current elevator, the operation data of the elevator can be used to interpolate the power consumption data of the current elevator to obtain the interpolated preliminary consumption data.

[0030] When it is determined that the data volume of the power consumption data has reached the preset data volume, data denoising is performed on the power consumption data, such as removing null values, removing mutation values ​​and obvious abnormal values, etc., to obtain denoised data, and then further smoothing is performed, such as supplementing the data after removing the original value with a smoothing trend, replacing the values ​​with more violent fluctuations with smoother values, etc., to obtain the processed power consumption data.

[0031] At this time, the normal consumption data and the extreme consumption data are determined according to the power consumption data. In the embodiment of the present invention, the normal consumption data is defined as the power consumption data of the elevator in the standby state. Since the power consumption of the elevator is not large and the consumption is relatively stable in the standby state, a low-configuration energy storage system can meet its needs, thereby determining the minimum configuration requirements of the energy storage system; the extreme consumption data is defined as the power consumption data of the elevator when it is fully loaded or unloaded. In this state, the power consumption of the elevator reaches the maximum, but this type of consumption occurs less frequently and more randomly, so it is only used as the power consumption required by the elevator under extreme conditions, thereby determining the extreme configuration requirements of the energy storage system.

[0032] Then, a basic configuration unit is obtained, which is the basic battery unit of the energy storage system. The basic energy storage parameters are determined based on the basic battery unit, and the basic energy storage parameters include but are not limited to the rated output current, maximum output current, rated output voltage, battery capacity and other parameters of the basic battery unit. Then, the configuration scheme of the energy storage system is determined based on the above conventional consumption data, extreme consumption data and basic energy storage parameters.

[0033] In actual application, the energy storage system is more economical than the traditional mains power supply. However, the cost savings of the energy storage system are limited, and the current configuration cost of the energy storage system is still relatively high. Therefore, if the energy storage system is configured directly according to the extreme consumption data, the configuration cost will be too high and cannot meet customer needs.

[0034] In an embodiment of the present invention, the conventional consumption data includes conventional current consumption and conventional power consumption, the limit consumption data includes limit current consumption and limit power consumption, and the method of determining a configuration scheme of the energy storage system based on the conventional consumption data, the limit consumption data and the basic energy storage parameters includes: determining a conventional scheme of the energy storage system based on the conventional current consumption, the conventional power consumption and the basic energy storage parameters; determining a limit scheme of the energy storage system based on the limit current consumption, the limit power consumption and the basic energy storage parameters; determining a conventional configuration cost of the conventional scheme and a limit configuration cost of the limit scheme; obtaining an expected configuration cost, adjusting the limit scheme based on the expected configuration cost, the conventional configuration cost and the limit configuration cost, and generating a configuration scheme of the energy storage system.

[0035] In a possible implementation, firstly, a conventional scheme of the energy storage system is determined based on conventional current consumption, conventional power consumption and basic energy storage parameters, that is, on the basis of meeting the standby operation of the elevator, the required minimum energy storage system configuration scheme is determined, and the conventional scheme includes the number of required basic configuration units and the connection relationship (series, parallel) of all basic configuration units. According to the conventional scheme, a preliminary energy storage system can be assembled. And the limit scheme of the energy storage system is determined based on the limit current consumption, the limit power consumption and basic energy storage parameters. According to the limit scheme, the required energy storage system configuration can be determined on the basis of meeting the limit operation power demand of the elevator.

[0036] At this time, the conventional configuration cost and the extreme configuration cost of the conventional solution and the extreme solution are obtained respectively, and the above extreme solution is adjusted according to the expected configuration cost to generate a configuration solution of the energy storage system that meets the actual needs. For example, in one embodiment, the expected configuration cost is about 200,000, the conventional configuration cost is 50,000, and the extreme configuration cost is 350,000. Therefore, according to the above three cost data, the conventional solution and the extreme solution are compared and the parameters are adjusted. For example, considering that the energy storage system is only used to provide 70% of the power supply demand of the elevator throughout the day, and only provides support for 70% of the elevator load capacity, that is, the DC output capacity of the energy storage system is not required to meet the extreme power supply demand of the elevator. On this basis, an adjustment plan that meets the above power supply demand is determined, and a configuration solution for the energy storage system is generated.

[0037] In the embodiment of the present invention, during the configuration of the energy storage system, the actual parameter requirements of the elevator and the expected configuration cost of the user are taken into consideration, and the best compromise solution is adopted, so as to provide the user with a configuration solution of the energy storage system with the highest efficiency and the lowest implementation cost while satisfying the normal use of the elevator, thereby meeting the actual needs of the customer.

[0038] In the actual application process, the technicians found that there are defects in only considering the hardware cost of the energy storage system to meet the needs of users. That is, the configuration plan generated by only considering the hardware cost of the energy storage system without considering the actual power supply cost may lead to the user's actual cost recovery period being extended. That is, in the actual application process, the purpose of users configuring the energy storage system is to save money, but configuring the energy storage system requires additional funds, so users expect to save the extra money through the energy storage system in the shortest time, and provide users with a low-cost elevator experience in the future.

[0039] In an embodiment of the present invention, the adjusting the extreme solution based on the expected configuration cost, the conventional configuration cost and the extreme configuration cost to generate a configuration solution for the energy storage system includes: determining a first power supply cost corresponding to the conventional solution, and a second power supply cost corresponding to the extreme solution; determining a cost deviation between the first power supply cost and the second power supply cost; determining a cost recovery period based on the conventional configuration cost, the extreme configuration cost and the cost deviation; determining an optimal cost solution based on the cost recovery period; and adjusting the extreme solution based on the expected configuration cost and the optimal cost solution to generate a configuration solution for the energy storage system.

[0040] In a possible implementation, after determining the conventional configuration cost of the conventional solution and the extreme configuration cost of the extreme solution, the first power supply cost of the conventional solution and the second power supply cost of the extreme solution are further obtained. Specifically, since the conventional solution can only meet the standby power supply demand of the elevator, the required energy storage system configuration is the lowest, and the conventional configuration cost is the lowest, but the additional power supply demand during the operation of the elevator requires the continued use of the mains, so its power supply cost is higher; on the contrary, the extreme solution can meet all the operating power supply needs of the elevator, so the configuration requirements of the energy storage system are the highest, and the extreme configuration cost is the highest, but the lowest cost electricity in the energy storage system is used during the operation of the elevator, so its power supply cost is the lowest.

[0041] At this time, the cost deviation is determined according to the above power supply cost. The size of the cost deviation determines the size of the cost recovery period. Specifically, a cost deviation change curve corresponding to different configuration cost conditions can be drawn. The cost recovery period under different configuration conditions can be determined based on the change curve, and the configuration scheme with the shortest cost recovery period is determined as the optimal cost scheme. However, the optimal cost scheme may not be within the expected configuration cost range accepted by the customer. Therefore, the limit scheme is finally adjusted according to the customer's expected configuration cost and the optimal cost scheme to generate a configuration scheme for the energy storage system that meets both the elevator operation and the customer's expectations.

[0042] In the embodiment of the present invention, the configuration scheme of the energy storage system is optimized by further combining the power supply costs of different energy storage system configuration schemes, thereby further improving the feasibility of the implementation of the configuration scheme, meeting the user's more accurate cost requirements, and improving the user experience.

[0043] After completing the configuration of the elevator energy storage system, the elevator is controlled to operate based on the energy storage system. On the one hand, the energy storage system may not be able to meet all the power supply needs of the elevator. Therefore, when to use the energy storage system for power supply and when to use an external power supply can determine whether the control strategy is the lowest cost. On the other hand, since batteries have a fixed limit on the number of charge and discharge times, if the energy storage system is frequently charged and discharged without restriction, its service life will be greatly reduced, causing losses to users.

[0044] For further information, see Figure 2 An embodiment of the present invention provides a control method for an elevator, wherein the elevator includes an energy storage system, and the energy storage system is configured according to the configuration method described in the embodiment of the present invention. The control method includes: S10) determining the current power supply period; S21) If the current power supply period is in a preset low power price period, control the elevator to access an external power supply and disconnect the energy storage system; S22) If the current power supply period is not in the preset low power price period, the power of the energy storage system is obtained, and based on the power, the elevator is controlled to connect to the energy storage system or the external power supply.

[0045] In one possible implementation, the elevator is at least equipped with the energy storage system described in the embodiment of the present invention. During operation, the elevator monitors the current power supply period in real time. In the embodiment of the present invention, the technicians pre-divide the time periods within a day into preset low-price periods (for example, from 10 pm to 7 am) according to the fluctuation of electricity prices. Since the electricity price is at the lowest level during this period, the elevator is preferentially controlled to access the external power supply and disconnect the energy storage system, so as to reduce the dependence on the energy storage system, reduce its configuration requirements, and reduce the configuration cost on the one hand; on the other hand, reduce the number of charge and discharge times of the energy storage system and increase its service life. When the elevator is not in the preset low-price period, the electricity price of the external power supply is high at this time, and the energy storage system can be connected. However, in order to avoid additional damage to the energy storage system by using it at too low a power level, the power of the energy storage system is further obtained, and the elevator is controlled to access the energy storage system or the external power supply according to the power.

[0046] In the embodiment of the present invention, by adopting the most economical power access control method according to the changes in external electricity prices, the operating cost of the elevator during operation can be effectively reduced, the economy of elevator riding can be improved, the user experience can be improved, and at the same time, the number of charge and discharge times of the energy storage system can be effectively reduced, thereby increasing the service life of the energy storage system.

[0047] In an embodiment of the present invention, controlling the elevator to connect to the energy storage system and / or the external power supply based on the power supply includes: if the power supply is greater than a preset limit, controlling the elevator to connect to the energy storage system and disconnecting the external power supply; if the power supply is less than or equal to the preset limit, controlling the elevator to connect to the external power supply and disconnecting the energy storage system.

[0048] In one possible implementation, in the process of determining whether the energy storage system can be connected, if the power of the energy storage system is greater than a preset limit, for example, the preset limit is 40%, the elevator is controlled to connect to the energy storage system and disconnect the external power supply to fully utilize the low-cost electricity of the energy storage system; otherwise, the elevator is controlled to connect to the external power supply and disconnect the energy storage system to avoid additional damage to the energy storage system caused by using it at extremely low power, thereby increasing the service life of the energy storage system.

[0049] In the actual application process, with the continuous development of new energy technology, there are more and more DC input power supplies and low-cost electricity in life. For example, new energy car owners can charge their cars at a low price at night, and when there is no demand for electricity during the day, they can output it to the energy storage system at a lower price to make a profit; for example, when the elevator is running during the day, the elevator's regenerated electricity can be directly input into the energy storage system for charging to make full use of free electricity, which can enable the elevator to use more low-cost electricity and achieve lower operating costs.

[0050] In an embodiment of the present invention, the control method also includes: obtaining at least one low-cost DC power supply, the power supply cost of the low-cost DC power supply being lower than the power supply cost of the external power supply; obtaining a first power supply cost of each low-cost DC power supply; obtaining an energy consumption rate of the energy storage system, and determining a converted power supply cost based on the first power supply cost and the energy consumption rate; obtaining the power supply demand of the elevator and the charging demand of the energy storage system; and controlling the low-cost DC power supply to supply power to the elevator and the energy storage system based on the converted power supply cost, the power supply demand and the charging demand.

[0051] In a possible implementation, at least one low-cost DC power supply is first obtained, and the low-cost DC power supply includes but is not limited to an energy feedback device for generating free renewable electric energy in an elevator, a power battery pack of a new energy vehicle, a DC microgrid, etc. At this time, a first power supply cost of each low-cost DC power supply is obtained, and then an energy consumption rate of the energy storage system is obtained, that is, the energy consumption rate of the low-cost DC power supply used to charge the energy storage system and then used to power the elevator. The converted power supply cost is determined based on the first power supply cost and the energy consumption rate, that is, the actual cost of each low-cost DC power supply being used for elevator operation after the energy is stored in the energy storage system.

[0052] At this time, the power supply demand of the elevator and the charging demand of the energy storage system are further obtained, and the low-cost DC power supply is controlled to supply power to the elevator and the energy storage system according to the converted power supply cost, power supply demand and charging demand, so as to further reduce the operating cost during the operation of the elevator and improve the economy of the elevator.

[0053] In an embodiment of the present invention, controlling all low-cost DC power supplies to supply power to the elevator and the energy storage system based on the converted power supply cost, the power supply demand and the charging demand includes: obtaining a second power supply cost of the external power supply; dividing all low-cost DC power supplies into a first power supply and a second power supply based on the second power supply cost and the converted power supply cost, the converted power supply cost of the second power supply being less than the second power supply cost; controlling all low-cost DC power supplies to supply power to the elevator based on the power supply demand; and controlling the second power supply to supply power to the energy storage system based on the charging demand.

[0054] In a possible implementation, the second power supply cost of the external power supply is obtained, and all low-cost DC power supplies are divided into a first power supply and a second power supply according to the above-mentioned converted power supply cost, wherein the converted power supply cost of the second power supply is less than the second power supply cost, that is, the actual use cost of the second power supply is lower than the actual use cost of the external power supply. At this time, the above two power supplies are controlled and used separately. Specifically, all low-cost DC power supplies are controlled to supply power to the elevator according to the power supply demand of the elevator. At this time, the power supply cost of all low-cost DC power supplies is lower than the power supply cost of the external power supply, thereby reducing the operating cost of the elevator; on the other hand, the second power supply is controlled to supply power to the energy storage system according to the charging demand. For example, when the elevator does not need to run, that is, there is no power supply demand or the power supply demand is less than the total power that all low-cost DC power supplies can provide, the power of the second power supply is stored in the energy storage system, and the power is released for use when the elevator needs to use it, thereby further reducing the operating cost of the elevator.

[0055] In an embodiment of the present invention, the actual usage cost of each low-cost power source is analyzed by combining the energy consumption during the storage process, and the corresponding power source is controlled to access the elevator according to the actual cost, thereby achieving low-cost operation of the elevator, reducing the operating burden and improving the user experience.

[0056] See also Figure 3 Based on the same inventive concept, an embodiment of the present invention provides a device for configuring an energy storage system of a DC elevator, the device comprising: a data acquisition unit for acquiring historical operation data of the elevator; a consumption determination unit for determining power consumption data based on the historical operation data; a consumption calculation unit for determining normal consumption data and limit consumption data based on the power consumption data; a configuration acquisition unit for acquiring a basic configuration unit and determining a basic energy storage parameter of the basic configuration unit; a configuration unit for determining a configuration scheme of the energy storage system based on the normal consumption data, the limit consumption data and the basic energy storage parameters.

[0057] See also Figure 4 Based on the same inventive concept, an embodiment of the present invention provides a control device for an elevator, wherein the elevator includes an energy storage system, and the device includes: a time period determination unit, used to determine a current power supply time period; a first control unit, used to control the elevator to access an external power supply and disconnect the energy storage system when the current power supply time period is in a preset low electricity price time period; a second control unit, used to obtain the power of the energy storage system when the current power supply time period is not in the preset low electricity price time period, and control the elevator to access the energy storage system or the external power supply based on the power.

[0058] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0060] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0061] In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. A method for configuring an energy storage system for a DC elevator, characterized in that: The configuration method comprises: Get the historical operation data of the elevator; determining power consumption data based on the historical operating data; determining normal consumption data and limit consumption data based on the power consumption data; Acquire a basic configuration unit and determine a basic energy storage parameter of the basic configuration unit; A configuration scheme of the energy storage system is determined based on the normal consumption data, the limit consumption data and the basic energy storage parameters.

2. The configuration method according to claim 1, characterized in that: The configuration method further includes: After determining the power consumption data, determining whether the data volume of the power consumption data reaches a preset data volume; If the preset data amount is not reached, performing a data interpolation operation on the power consumption data to obtain preliminary consumption data after interpolation; If the preset data amount is reached, data denoising is performed on the power consumption data to obtain denoised data, and smoothing is performed on the denoised data to obtain processed power consumption data.

3. The configuration method according to claim 1, characterized in that: The conventional consumption data includes conventional current consumption and conventional power consumption, the limit consumption data includes limit current consumption and limit power consumption, and the configuration scheme of the energy storage system is determined based on the conventional consumption data, the limit consumption data and the basic energy storage parameters, including: Determining a conventional solution of the energy storage system based on the conventional current consumption, the conventional power consumption and the basic energy storage parameter; Determine a limit solution of the energy storage system based on the limit consumption current, the limit power consumption and the basic energy storage parameter; Determining a conventional configuration cost of the conventional solution and an extreme configuration cost of the extreme solution; An expected configuration cost is obtained, and the extreme solution is adjusted based on the expected configuration cost, the conventional configuration cost, and the extreme configuration cost to generate a configuration solution for the energy storage system.

4. The configuration method according to claim 3, characterized in that: The step of adjusting the limit solution based on the expected configuration cost, the conventional configuration cost and the limit configuration cost to generate a configuration solution for the energy storage system includes: Determining a first power supply cost corresponding to the conventional solution and a second power supply cost corresponding to the extreme solution; determining a cost deviation between the first power supply cost and the second power supply cost; determining a cost recovery period based on the normal configuration cost, the extreme configuration cost and the cost deviation; Determining an optimal cost solution based on the cost recovery period; The limit solution is adjusted based on the expected configuration cost and the optimal cost solution to generate a configuration solution for the energy storage system.

5. A method for controlling an elevator, characterized in that: The elevator includes an energy storage system, and the energy storage system is configured according to the configuration method according to any one of claims 1 to 4. The control method includes: Determine the current power supply period; If the current power supply period is in a preset low power price period, control the elevator to access an external power supply and disconnect the energy storage system; If the current power supply period is not in the preset low power price period, the power of the energy storage system is obtained, and based on the power, the elevator is controlled to connect to the energy storage system or the external power supply.

6. The control method according to claim 5, characterized in that: The controlling the elevator to access the energy storage system and / or the external power supply based on the power quantity includes: If the power is greater than a preset limit, the elevator is controlled to connect to the energy storage system and disconnect the external power supply; If the power amount is less than or equal to the preset limit, the elevator is controlled to connect to the external power supply and disconnect the energy storage system.

7. The control method according to claim 5, characterized in that: The control method further comprises: Obtain at least one low-cost DC power source, wherein the power supply cost of the low-cost DC power source is lower than the power supply cost of the external power source; Get the first supply cost of each low-cost DC power source; Acquire an energy consumption rate of the energy storage system, and determine a converted power supply cost based on the first power supply cost and the energy consumption rate; Obtaining the power supply demand of the elevator and the charging demand of the energy storage system; A low-cost DC power supply is controlled to supply power to the elevator and the energy storage system based on the converted power supply cost, the power supply demand and the charging demand.

8. The control method according to claim 7, characterized in that: The controlling all low-cost DC power supplies to supply power to the elevator and the energy storage system based on the converted power supply cost, the power supply demand and the charging demand includes: Obtaining a second power supply cost of the external power source; dividing all low-cost DC power supplies into a first power supply and a second power supply based on the second power supply cost and the converted power supply cost, the converted power supply cost of the second power supply being less than the second power supply cost; Based on the power supply demand, control all low-cost DC power supplies to supply power to the elevator; The second power source is controlled to supply power to the energy storage system based on the charging demand.

9. A DC elevator energy storage system configuration device, characterized in that: The configuration device comprises: A data acquisition unit, used to acquire historical operation data of the elevator; a consumption determination unit, configured to determine power consumption data based on the historical operation data; a consumption calculation unit, configured to determine normal consumption data and limit consumption data based on the power consumption data; A configuration acquisition unit, used to acquire a basic configuration unit and determine a basic energy storage parameter of the basic configuration unit; A configuration unit is used to determine a configuration scheme of the energy storage system based on the conventional consumption data, the limit consumption data and the basic energy storage parameters.

10. An elevator control device, characterized in that: The elevator includes an energy storage system, and the control device includes: A time period determination unit, used to determine a current power supply time period; A first control unit is used to control the elevator to access an external power supply and disconnect the energy storage system when the current power supply period is in a preset low power price period; The second control unit is used to obtain the power of the energy storage system when the current power supply period is not in the preset low power price period, and control the elevator to connect to the energy storage system or the external power supply based on the power.

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