A special equipment energy storage type energy recovery energy saving system and method

Abstract

The present invention provides a special equipment energy storage type energy recovery energy saving system and method, which involves data processing technology, respectively connected to each special equipment first inverter DC bus; DC bus, multiple first connection points of the DC bus are respectively connected to each first inverter DC bus; DCDC conversion device, the high voltage side of the DCDC conversion device is connected to the second connection point of the DC bus, and the low voltage side of the DCDC conversion device is connected to the energy storage device. The present invention can realize energy conversion and recovery of special equipment and meet energy saving requirements.

Description

Technical Field

[0001] The present invention relates to data processing technology, and in particular to a special equipment energy storage type energy recovery and energy saving system and method. Background Art

[0002] All industries are actively promoting green development and transformation to achieve sustainable development. Safety, greenness and energy conservation have become core issues in social development. With the rapid development of modern green buildings, the safe, efficient and energy-saving operation of special equipment has become increasingly important.

[0003] In the existing technology, special equipment usually relies on independent AC power supply, which has the problem of high energy consumption. In addition, traditional special equipment will generate a large amount of potential energy during operation, but this energy is often dissipated ineffectively in the form of heat energy. Traditional technology cannot effectively recover the energy generated during the operation of special equipment, resulting in energy waste.

[0004] Therefore, how to achieve energy recovery of special equipment and meet energy-saving needs has become an urgent problem to be solved. Summary of the invention

[0005] The present invention provides a special equipment energy storage type energy recovery energy saving system and method, which can realize energy recovery of special equipment and meet energy saving requirements.

[0006] A first aspect of the present invention provides a special equipment energy storage type energy recovery and energy saving system, comprising:

[0007] A first inverter DC bus bar connected to each special equipment respectively;

[0008] A DC bus, wherein a plurality of first connection points of the DC bus are respectively connected to each first inverter DC bus;

[0009] A DCDC conversion device, wherein the high voltage side of the DCDC conversion device is connected to the second connection point of the DC bus, and the low voltage side of the DCDC conversion device is connected to the energy storage device.

[0010] Optionally, in a possible implementation of the first aspect, the first inverter DC bus is connected to at least an original braking resistor, a fuse, a contactor and a DC meter of the special equipment in sequence in the direction toward the DC bus.

[0011] Optionally, in a possible implementation of the first aspect, a circuit breaker and a DC meter are provided at the connection line between the DC bus and the DCDC conversion device. The DCDC conversion device includes a TPC power supply interface, a TPC communication interface, a protection interface, an AC power supply interface, an emergency stop pin, and an indicator light pin;

[0012] The TPC power supply interface is connected to the local interactive terminal;

[0013] The TPC communication interface is connected to the local interactive terminal and the electric meter respectively;

[0014] The TPC power supply interface and protection interface are respectively connected to the energy storage protection module;

[0015] The low voltage side of the DCDC conversion device is connected to the energy storage device through a DC meter;

[0016] The AC power supply interface is connected to the meter power supply and the system power supply respectively;

[0017] The emergency stop pin is connected to the emergency stop button;

[0018] The indicator light pins are connected to a plurality of indicator lights respectively.

[0019] A second aspect of the present invention provides a special equipment energy storage type energy recovery and energy saving method, comprising:

[0020] If it is determined that the energy storage device meets the energy storage condition, obtaining first electric energy information of the DC bus;

[0021] If it is determined that the first electric energy information of the DC bus is greater than the first preset value, the first electric energy information of the DC bus is transformed based on the DCDC conversion device to obtain second electric energy information;

[0022] If it is determined that the second electric energy information has an upward trend in the time series dimension, charging the energy storage device based on the second electric energy information;

[0023] After determining that the energy storage device has reached a first upper limit of electrical energy, the original braking resistor of the special equipment is controlled to discharge, and the energy storage device is no longer charged until the energy storage device reaches a second upper limit of electrical energy, and the second upper limit of electrical energy is less than the first upper limit of electrical energy.

[0024] Optionally, in a possible implementation manner of the second aspect, the method further includes:

[0025] If it is determined that the second electric energy information has a downward trend in the time series dimension, the energy storage device is controlled to discharge the target load, and the energy storage device stops discharging and is placed in a waiting state for charging after the energy storage device reaches the first lower limit electric energy information.

[0026] Optionally, in a possible implementation manner of the second aspect, the method further includes:

[0027] Establishing a twin module corresponding to each device in the energy storage type energy recovery and energy saving system of special equipment, and establishing a twin connection line between all the twin modules according to the electrical connection relationship between the twin modules;

[0028] Receive a line attribute label and a line display label configured by a user for each twin connection line, wherein the line attribute label includes at least one of a strong current attribute or a weak current attribute, and the line display label includes multiple threshold display intervals and a display mode corresponding to each threshold display interval;

[0029] The status information of each twin module and twin connection line within a preset time period is obtained, and an optimization processing solution for the energy storage type energy recovery and energy saving system of special equipment is generated based on the status information.

[0030] Optionally, in a possible implementation of the second aspect, the acquiring of status information of each twin module and twin connection line within a preset time period, and generating an optimization processing scheme for the energy storage type energy recovery and energy saving system of special equipment based on the status information, includes:

[0031] Acquire status information of the energy storage device within a preset time period, extract a first time period when the energy storage device reaches a first upper limit of electric energy information, and extract a second time period when the energy storage device is in a state of waiting for charging;

[0032] Obtaining a first judgment coefficient based on a comparison between the first time period and the second time period;

[0033] If the first judgment coefficient falls within the first threshold interval, a power storage unsaturated reminder message is generated, and the number of special equipment that can be connected again is generated based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system;

[0034] If the first judgment coefficient falls within the second threshold interval, storage saturation reminder information is generated, and based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, an analysis is performed to generate a reminder number for newly built energy storage devices and a connection relationship between each special equipment and the energy storage device.

[0035] Optionally, in a possible implementation manner of the second aspect, if the first judgment coefficient falls within a first threshold interval, generating a power storage unsaturated reminder message, analyzing based on a current connection relationship of the special equipment energy storage type energy recovery and energy saving system, and generating a number of special equipment that can be connected again, including:

[0036] Counting an average power of the energy storage device in the second time period, and calculating a first power proportion based on the average power and a rated capacity of the energy storage device;

[0037] Obtaining a first number of special equipment that realizes an energy recovery connection relationship based on an energy storage device in a special equipment energy storage type energy recovery and energy saving system, and dividing the first power proportion by the first number of the special equipment to obtain a first equipment proportion;

[0038] The first increase coefficient is obtained by subtracting the first electricity proportion from the preset second electricity proportion and dividing the result by the first equipment proportion. The first increase coefficient is weighted according to the preset weight to generate the number of special equipment that is re-connected.

[0039] Optionally, in a possible implementation manner of the second aspect, if the first judgment coefficient falls within the second threshold interval, power storage saturation reminder information is generated, and the number of reminders for newly-built energy storage devices and the connection relationship between each special equipment and the energy storage device are generated based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system. The information includes:

[0040] Counting the discharge value of each original brake resistor in the first time period, and obtaining the rated discharge amount per unit time based on the sum of the discharge values ​​of all the original brake resistors in the first time period;

[0041] Acquire the rated charge capacity of the energy storage device in the charging state, calculate the first proportionality coefficient based on the rated discharge capacity and the rated charge capacity, and perform weighted processing on the first proportionality coefficient to obtain the reminder quantity of the newly built energy storage device;

[0042] Obtain the discharge state time of the original brake resistor corresponding to each special equipment and sort them in descending order to obtain a selection sequence;

[0043] The energy storage labels of all energy storage devices are counted and randomly sorted to obtain a label sequence. The special equipment in the sequence is selected by forward screening based on the order of the label sequence. After completing a forward screening, the special equipment in the sequence is selected by reverse screening in sequence. The above steps are repeated until all special equipment in the selection sequence is selected. Each forward or reverse screening determines a special equipment corresponding to each energy storage label.

[0044] According to a third aspect of an embodiment of the present invention, a storage medium is provided, in which a computer program is stored. When the computer program is executed by a processor, it is used to implement the method of the first aspect of the present invention and various possible designs of the first aspect.

[0045] The beneficial effects of the present invention are as follows:

[0046] 1. The present invention can realize the conversion of potential energy of special equipment into electrical energy, realize energy recovery of special equipment, avoid energy waste, and meet energy conservation requirements. The present invention can convert energy through the inverter of special equipment based on the normal power supply of the AC side of special equipment, combined with the potential energy generated by each special equipment during operation, and adopt a DC bus solution to realize the shared utilization of converted electrical energy between each other, and design a DCDC conversion device, combined with an energy storage module, to realize efficient storage of converted electrical energy, and use the stored electrical energy to supply DC power to special equipment, to achieve a rapid charging and discharging effect, and design corresponding application methods to ensure the safe and stable operation of the system, realize energy regeneration, shared utilization, energy saving and consumption reduction, and ensure the safe and efficient operation of special equipment while improving energy utilization efficiency and reducing operating costs.

[0047] 2. The present invention can use digital twin technology to achieve refined monitoring of each device and line in the system, improve the transparency and controllability of the system, combine real-time status information, dynamically generate optimization plans, and ensure that the system can maintain efficient operation under different working conditions. In addition, by configuring different tags and display methods, it can participate in the monitoring and optimization process of the system, thereby improving user experience and system adaptability.

[0048] 3. The present invention can accurately analyze the status information of the energy storage device, identify the underutilized energy storage capacity in the system, and adjust the system operation strategy according to the situation to improve energy efficiency, ensure that the charging and discharging of the energy storage device in the system operates within the ideal range, thereby optimizing the utilization of electric energy resources, providing optimization suggestions and reminders for system operators, supporting better decision-making, and improving the adaptability and flexibility of the system. Among them, it is also possible to identify the saturation state of the energy storage device, adjust the system configuration in time to prevent energy waste, and calculate the addition of energy storage devices to increase the total energy storage capacity of the system, so as to better meet the needs of energy recovery and storage. By adjusting the connection relationship between the equipment and the energy storage device, it is ensured that energy is stored and utilized in the most efficient way, and the overall efficiency of energy recovery in the system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A core architecture diagram of a special equipment energy storage type energy recovery and energy saving system provided by the present invention;

[0050] Figure 2 A core architecture diagram of another special equipment energy storage type energy recovery and energy saving system provided by the present invention;

[0051] Figure 3 A schematic diagram of a single-hall multi-elevator energy storage system provided by the present invention;

[0052] Figure 4A peripheral control architecture diagram of a special equipment energy storage type energy recovery and energy saving system provided by the present invention;

[0053] Figure 5 A flow chart of a special equipment energy storage type energy recovery and energy saving method provided by the present invention. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein.

[0056] It should be understood that in various embodiments of the present invention, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0057] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0058] It should be understood that in the present invention, "plurality" refers to two or more than two. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains A, B and C", "Contains A, B, C" means that A, B, and C are all included, "Contains A, B or C" means that one of A, B, and C is included, and "Contains A, B and / or C" means that any one, any two, or any three of A, B, and C are included.

[0059] It should be understood that in the present invention, "B corresponding to A", "B corresponding to A", "A corresponds to B" or "B corresponds to A" means that B is associated with A and B can be determined based on A. Determining B based on A does not mean determining B based only on A, but B can also be determined based on A and / or other information. A and B match when the similarity between A and B is greater than or equal to a preset threshold.

[0060] Depending on the context, "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting."

[0061] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0062] like Figure 1 He Ru Figure 2 As shown, the present invention provides a special equipment energy storage type energy recovery and energy saving system, which specifically includes:

[0063] The first inverter DC bus is respectively connected to each special equipment.

[0064] It should be noted that, in actual applications, various special equipment need to consume a large amount of electric energy to normally realize the corresponding lifting function, but the operating time of special equipment is uncertain. For example, special equipment (which can be an elevator) is frequently used within an hour, and is used less frequently at other times. At the same time, in order to meet the lifting operation needs in real time, it is necessary to store electricity at all times to meet the normal operation of the special equipment. As a result, the stored electric energy may be insufficient or redundant in different time periods, resulting in energy waste, which in turn affects the dispatching operation of the power grid. In the process of continuous operation of special equipment, corresponding potential energy will be generated. In order to realize energy regeneration and resource sharing, the first inverter DC bus can be used to convert energy through the inverter, realize the conversion of potential energy into electrical energy, and transmit it to the corresponding inverter DC bus side, thereby realizing energy sharing.

[0065] It can be understood that special equipment refers to eight categories of equipment that involve life safety and are relatively dangerous, including boilers, pressure vessels (including gas cylinders), pressure pipelines, elevators, lifting machinery, passenger ropeways, large amusement facilities and special motor vehicles within the site (factory). The first inverter DC bus is the corresponding DC bus in the inverter.

[0066] It is not difficult to understand that in order to recycle the energy in the corresponding special equipment, a first inverter DC bus is provided which is connected to each special equipment so that energy can be subsequently recovered according to the first inverter DC bus.

[0067] It is worth mentioning that the present invention can realize potential energy power generation during the operation of special equipment, which can flow to other special equipment that needs to consume electricity to realize the sharing of regenerative energy. Secondly, the excess electric energy can be stored in the energy storage module through a high-power bidirectional DCDC conversion device. When the special equipment that consumes electricity cannot obtain the potential energy generated by the operation of other special equipment, the electric energy of the energy storage module is released to the DC bus bar through the high-power bidirectional DCDC conversion device, and the power-consuming special equipment is supplied with stable DC power supply. When the above-mentioned electric energy cannot fully meet the operation of the special equipment, power is taken from the AC side to ensure the normal operation of the special equipment. When the electric energy converted by the potential energy of the special equipment cannot be fully stored, it can be released through the braking resistor connected to the DC bus of the original special equipment inverter.

[0068] A DC bus, wherein a plurality of first connection points of the DC bus are respectively connected to each first inverter DC bus.

[0069] It can be understood that the first connection point is a node on the DC bus that is connected to other devices.

[0070] It is not difficult to understand that, for example, Figure 3 As shown, in the same building, there are multiple elevators and thus corresponding inverters. Therefore, when energy recovery is performed, the DC bus bars of the first inverters corresponding to the multiple elevators can be connected to the DC bus bar, so that the multiple first connection points of the DC bus bar are respectively connected to the DC bus bar of each first inverter.

[0071] A DCDC conversion device, wherein the high voltage side of the DCDC conversion device is connected to the second connection point of the DC bus, and the low voltage side of the DCDC conversion device is connected to the energy storage device.

[0072] It can be understood that the DCDC conversion device has a high voltage side and a low voltage side, so that in the energy recovery system, the high voltage side of the DCDC conversion device is connected to the second connection point of the DC bus, and the low voltage side of the DCDC conversion device is connected to the energy storage device, so that the energy in the DC bus is stored in the energy storage device according to the flow through the DCDC conversion device.

[0073] The second connection point is a connection node of the DC busbar connected to the DCDC conversion device, and the energy storage device is a device for storing energy, such as a battery.

[0074] It is not difficult to understand that the DC busbar is connected to the high-voltage side of the high-power bidirectional DCDC converter, the energy storage device is connected to the low-voltage side of the high-power bidirectional DCDC converter, the high-power bidirectional DCDC converter is externally powered by AC and can simultaneously draw power from the DC side (supercapacitor side) to achieve connection or disconnection between its high-voltage side and low-voltage side, and to achieve voltage conversion between the high-voltage side and the low-voltage side in the connected state, and stabilize the DC bus voltage value within a fixed range, thereby ensuring stable, safe and energy-saving operation of special equipment.

[0075] It is worth mentioning that when the energy storage device is installed, when the voltage on the DC bus is greater than the preset bus voltage upper limit, the DC bus charges the energy storage device through a high-power bidirectional DCDC conversion device; and when the voltage on the DC bus is less than the preset bus voltage lower limit, the energy storage device supplies power to various special equipment through a high-power bidirectional DCDC conversion device, thereby achieving rapid charging and discharging effects.

[0076] In addition, the DCDC converter is used to achieve connection or disconnection between its high-voltage side and low-voltage side, and to achieve voltage conversion between the high-voltage side and the low-voltage side in the connected state. It has the characteristics of wide voltage transformation ratio, high conversion efficiency, and small size. It meets the wide voltage transformation ratio range of DC bus (high-voltage side) DC750V to energy storage device (low-voltage side) 70V, and its transformation ratio reaches 11:1; its half-load conversion efficiency reaches 99.2% or above, which is very important for converting potential energy into electrical energy, and in the conversion process, it reduces energy loss and heat release. At the same time, with regard to the energy storage device, a supercapacitor energy storage system is specifically used in actual applications to store and release the electrical energy converted from potential energy during braking of special equipment.

[0077] The DC side of the first frequency converter is connected in sequence with at least an original braking resistor (in parallel) of the special equipment, a fuse, a contactor and a DC meter in the direction toward the DC bus.

[0078] It can be understood that the DC meter includes a high-voltage side DC meter, a low-voltage side DC meter and each branch DC meter, and a high-voltage side switch and a low-voltage side switch are added to the system. The number of branch DC meters is equal to the number of special equipment inverters, and each branch DC meter corresponds to each special equipment inverter one by one. The DC bus of the inverter of each special equipment is connected to the DC bus bar through the corresponding branch DC meter, and the high-voltage side of the DCDC converter is connected to the DC bus bar through the high-voltage side DC meter and the high-voltage side switch in turn. The low-voltage side of the DCDC converter is connected to the energy storage device through the low-voltage side DC meter and the low-voltage side switch. The high-voltage side DC meter, the low-voltage side DC meter, and the branch DC meters constitute each system detection terminal, and the high-voltage side switch and the low-voltage side switch constitute each system control terminal.

[0079] Furthermore, on the basis of the above, Figure 1 He Ru Figure 2 As shown, an energy storage protection module, a discharge resistor, a discharge switch, and contactors, fuses, and brake resistors corresponding to each special equipment can be added to the system. In the specific design, the acquisition end of the energy storage protection module is connected to the energy storage module, the output end of the energy storage protection module is connected to the DCDC conversion device, and the energy storage protection module is connected to the power supply port of the DCDC conversion device to take power. The energy storage protection module collects status information of the energy storage module and sends it to the DCDC conversion device. The DCDC conversion device performs charging or discharging operations on the energy storage module based on the status information of the energy storage module.

[0080] The energy storage module is connected to the discharge resistor through the discharge switch, and the discharge switch constitutes the system control terminal. The inverter DC bus of each special equipment is connected to the DC bus bar through the corresponding original braking resistor, contactor, and fuse. The contactors corresponding to each special equipment constitute each system control terminal.

[0081] In application, the discharge resistor is mainly used for system maintenance to facilitate safe operation. After the low-voltage side switch on the low-voltage side of the high-power bidirectional DCDC converter is disconnected, the electric energy of the supercapacitor energy storage system is completely released. The connected discharge resistor is controlled by the switch to release the electric energy of the supercapacitor energy storage system in the form of heat.

[0082] Among them, the contactor is an electrical appliance that can be remotely controlled to be connected and disconnected. It needs to have a strong current-breaking ability, a fast action response and a high operational safety. The selection of the contactor must comply with the voltage (usually DC750V) and current level of the controlled circuit. Since the contactor cannot cut off the short-circuit current, it is necessary to cooperate with the fuse to protect the inverter of the equipment to ensure the safe operation of the equipment. Similarly, the selection of the fuse needs to comply with the voltage and current level of the circuit. Usually, the short-circuit current level of the fuse is smaller than the current level of the contactor. That is, in actual applications, when the inverter of a special equipment fails, the corresponding contactor can be controlled to disconnect and the faulty inverter can be repaired. After the repair, the contactor can be controlled to connect again and the repaired inverter can be reconnected to the circuit for operation.

[0083] A circuit breaker and a DC meter are provided at the connection line between the DC bus and the DCDC conversion device.

[0084] It can be understood that in specific applications, the DC meter can be a single-circuit DC meter or a dual-circuit DC meter. The DC meters on each branch respectively count the electric energy generated by potential energy recovery on the branch corresponding to the special equipment where it is located. The high-voltage side DC meter and the low-voltage side DC meter respectively count the electric energy passing through their respective locations based on the high-voltage side and low-voltage side of their high-power bidirectional DCDC conversion devices.

[0085] Among them, the parameter level of the DC meter must meet the DC750 voltage level and the corresponding current level measurement requirements. Based on the design of the above DC meter, in actual application, an AC meter located on the AC side is deployed for the above special equipment to count the total amount of power supplied by each special equipment on the AC side. A 400VAC voltage level AC meter is commonly used, and the corresponding measurement line current level is matched. The DC meters of each branch are compared to form the energy saving rate index of the entire system, that is,

[0086] Furthermore, when the DCDC conversion device fails or needs to be repaired, the circuit connection at the location where it is set can be cut off by the circuit breaker.

[0087] It is worth mentioning that Figure 4 As shown, a control module, a local interactive terminal, a remote interactive terminal, and a communication management module are further designed to be added. The frequency converter of each special equipment and each system detection terminal are respectively connected to the input end of the control module and the input end of the local interactive terminal. The control end of the control module and the control end of the local interactive terminal are respectively connected to each system control terminal. The remote control terminal is respectively connected to the frequency converter of each special equipment, each system detection terminal, and each system control terminal through the communication management module. That is, in the application, the addition of the control module realizes the automatic control process based on the threshold, and the status information of the frequency converter of each special equipment and each system detection terminal is observed with the help of the local interactive terminal, and the corresponding system control terminal is commanded and controlled. At the same time, the communication management module based on the network communication connection introduces the remote interactive terminal for application, which brings the same detection and control functions as the local interactive terminal to the remote interactive terminal.

[0088] In specific practical applications, the control module includes monitoring, protection and logic control modules to achieve flexible monitoring and safe operation of the system. The control module provides control signals for a small number of signal input ports of the high-power bidirectional DCDC converter. The control module includes multi-channel signal acquisition ports, multi-channel feedback protection ports and control output ports. It communicates with the high-power bidirectional DCDC converter through the 485 or / and CAN communication interface and executes control commands to ensure safe and stable operation of the system.

[0089] The local interactive terminal is the on-site operating hardware equipment of the system. It is responsible for communicating with the system detection terminals and system control terminals in the design of this system, that is, observing the status information of each system detection terminal locally, and performing command control on the corresponding system control terminals including the high-power bidirectional DCDC conversion device, including customization of voltage, current, power, energy saving, energy saving rate, carbon reduction, etc. In terms of communication, it can communicate with the outside with the help of the communication management module.

[0090] When the special equipment needs to be overhauled or stopped running, the corresponding line contactor can be controlled to be turned off through the local interactive terminal or the remote interactive terminal via the communication management module. When the system additionally designed and carried by the special equipment of the present invention needs to be overhauled, while turning off the contactors on all lines, the low-voltage side switch on the low-voltage side of the high-power bidirectional DCDC conversion device is disconnected, and the discharge switch is connected, that is, the energy storage module and the discharge resistor are connected, and the discharge resistor generates heat to consume electricity until the remaining power of the energy storage module is exhausted, which is convenient for maintenance.

[0091] The DCDC conversion device includes a TPC power supply interface, a TPC communication interface, a protection interface, an AC power supply interface, an emergency stop pin and an indicator light pin.

[0092] It can be understood that the TPC power supply interface is a power output interface, which is convenient for powering other devices. The protection interface is a supercapacitor system protection interface, which is convenient for monitoring the working status of the supercapacitor. The TPC communication interface is an interface for information communication, which is used for communication and control with other devices or systems. The AC power supply interface is an alternating current power supply interface. The emergency stop pin is an information pin for emergency stop, and an emergency button can be connected so that when an emergency stop is required, the circuit can be directly disconnected to achieve system protection. The indicator light pin is an information pin for displaying information prompts.

[0093] The TPC power supply interface is connected to the local interactive terminal.

[0094] It is understandable that the TPC power supply interface is connected to the local interactive terminal so as to maintain the local interactive terminal with power in real time for normal operation.

[0095] The TPC communication interface is connected to the local interactive terminal and the electric meter respectively.

[0096] It can be understood that the local interactive terminal is the on-site operating hardware equipment of the system, which is responsible for communicating with each system detection terminal and each system control terminal in the design of this system, that is, observing the status information of each system detection terminal locally, and performing command control on the corresponding system control terminals including the high-power bidirectional DCDC conversion device, including customization such as voltage, current, power, energy saving, energy saving rate, carbon reduction, etc. In terms of communication, it can communicate with the outside with the help of the communication management module.

[0097] The TPC power supply interface and protection interface are respectively connected to the energy storage protection module.

[0098] It can be understood that in order to enable the energy storage protection module to protect the circuit system, the energy storage protection module is connected to the TPC power supply interface so that the energy storage protection module has electrical energy for monitoring. At the same time, the energy storage protection module is connected to the protection interface to monitor the working status of the supercapacitor and realize the protection function.

[0099] The low voltage side of the DCDC conversion device is connected to the energy storage device through a DC meter.

[0100] It can be understood that the low-voltage side of the DCDC conversion device is connected to the energy storage device through a DC meter so that the energy in the DC bus is stored in the energy storage device according to the flow through the DCDC conversion device, and the DC meter is used to record information, such as voltage information and current information.

[0101] The AC power supply interface is connected to the meter power supply and the system power supply respectively.

[0102] It can be understood that the AC power supply interface is connected to the meter power supply and the system power supply respectively, wherein the AC power supply interface is connected to the system power supply so that the system power supply provides energy to the DCDC conversion device through the connected AC power supply interface, and is connected to the meter power supply so that other devices can be powered.

[0103] The emergency stop pin is connected to the emergency stop button.

[0104] It can be understood that the emergency stop pin is connected to the emergency stop button so that when an emergency stop is required, the circuit can be disconnected by triggering the emergency stop button to achieve system protection.

[0105] The indicator light pins are connected to a plurality of indicator lights respectively.

[0106] It is understandable that the indicator light pin is connected to multiple indicator lights so that the corresponding problem can be directly reflected by the flashing of different indicator lights. For example, when multiple indicator lights are all green, it means normal operation. When two indicator lights are red, it means that the electric meter is abnormal. When all indicator lights are red, it means that the circuit in the system is abnormal and should be stopped in time for maintenance.

[0107] It is worth mentioning that any fault in the energy recovery and energy-saving system itself will not affect the normal operation of the special equipment. The physical connection with the special equipment will be cut off unconditionally to ensure the safe operation of the special equipment. The system will enter the maintenance state and there will be prompt messages on the phone and APP. After the maintenance is completed and restored to normal, it will be put into use again.

[0108] like Figure 5 As shown, the present invention provides a special equipment energy storage type energy recovery and energy saving method, comprising:

[0109] S1: If it is determined that the energy storage device meets the energy storage condition, first electric energy information of the DC bus is obtained.

[0110] It can be understood that the first electric energy information is the electric energy information corresponding to the DC bus when the energy storage device can store energy, such as the corresponding voltage value.

[0111] It is not difficult to understand that when the energy storage device meets the energy storage conditions, the corresponding first electric energy information can be obtained through the DC meter of the corresponding DC bus to determine whether the current system is in a state where energy storage can be started, so as to start energy storage later.

[0112] S2, if it is determined that the first electric energy information of the DC bus is greater than the first preset value, the first electric energy information of the DC bus is transformed based on the DCDC conversion device to obtain second electric energy information.

[0113] It can be understood that the first preset value is a preset upper limit value of the bus voltage, and the second electric energy information is the electric energy information after voltage transformation, for example, the voltage information after the first electric energy information is transformed by a DCDC conversion device.

[0114] It is not difficult to understand that when the first electric energy information of the DC bus is greater than the first preset value, the first electric energy information needs to be transformed in order to determine the change state of the second electric energy information after the transformation, so as to subsequently determine whether to charge.

[0115] S3: If it is determined that the second electric energy information has an upward trend in the time series dimension, the energy storage device is charged based on the second electric energy information.

[0116] It is understandable that when it is detected that the electric energy information has an upward trend, the second electric energy information is used to charge the energy storage device, which can ensure effective energy storage when the electric energy is sufficient.

[0117] S4, after determining that the energy storage device has reached a first upper limit of electrical energy, controlling the original braking resistor of the special equipment to discharge, and no longer charging the energy storage device until the energy storage device reaches a second upper limit of electrical energy, wherein the second upper limit of electrical energy is less than the first upper limit of electrical energy.

[0118] It can be understood that the first upper limit electric energy is the upper limit value of the storage voltage, and the second upper limit electric energy is the lower limit value of the storage voltage.

[0119] It is not difficult to understand that when the electric energy of the energy storage device reaches the first upper limit, charging it is stopped and the original braking resistor of the special equipment is controlled to discharge. At this time, further charging of the energy storage device is suspended until the electric energy level drops to the second upper limit. This strategy can avoid overcharging and release excess electric energy through the discharge process.

[0120] It is worth noting that the second upper limit electrical energy is less than the first upper limit electrical energy to ensure a safe charge and discharge cycle.

[0121] In some embodiments, it also includes:

[0122] A1, if it is determined that the second electric energy information has a downward trend in the time series dimension, the energy storage device is controlled to discharge the target load, and the energy storage device stops discharging and is set to a waiting state for charging after the energy storage device reaches the first lower limit electric energy information.

[0123] It is understandable that the target load is a corresponding load device that needs to consume electric energy, such as an elevator, a crane, etc. included in the special equipment.

[0124] It is not difficult to understand that when it is judged that the second electric energy information has a downward trend in the time series, the energy storage device is started to discharge the target load. This step ensures that when the electric energy demand increases or the electric energy surplus decreases, the energy storage device can effectively provide electric energy support for the load. At the same time, when the electric energy level of the energy storage device drops to the preset first lower limit, the discharge operation is stopped and the energy storage device is placed in a waiting state for charging. At this time, the energy storage device is ready to charge again when the electric energy information shows an upward trend.

[0125] In some embodiments, it also includes:

[0126] B1, establish a twin module corresponding to each device in the special equipment energy storage type energy recovery and energy saving system, and establish a twin connection line between all the twin modules according to the electrical connection relationship between the twin modules.

[0127] It can be understood that the twin module is a digital virtual model corresponding to each device, and the twin connection line is a virtual line after connecting the twin modules according to the connection relationship corresponding to each device in the actual system. For example, the twin modules corresponding to the elevator device, battery and DCDC conversion device are connected according to the actual electrical connection relationship.

[0128] It is not difficult to understand that the creation of twin modules can reflect the status and characteristics of the physical device in real time, and based on the actual electrical connection relationship between the twin modules, virtual twin connection lines are established. These lines are used to simulate the flow and interaction of electrical energy within the system to support subsequent optimization analysis.

[0129] Through the above implementation modes, the present invention can realize refined monitoring of each device and line in the system through digital twin technology, thereby improving the transparency and controllability of the system.

[0130] B2, receiving the line attribute label and line display label configured by the user for each twin connection line, wherein the line attribute label includes at least one of a strong current attribute or a weak current attribute, and the line display label includes multiple threshold display intervals and a display method corresponding to each threshold display interval.

[0131] It can be understood that the line attribute label is an attribute label determined according to the level of electric energy in the line, including strong current attributes and weak current attributes, wherein the strong current attribute is a line attribute involving very high electric energy of the corresponding device in the line, and the weak current attribute is an attribute involving less electric energy, such as the attribute of the line that controls the circuit switch. The line display label is label information for displaying the line, which includes multiple threshold display intervals and the display method corresponding to each threshold display interval. The threshold display interval is a corresponding numerical interval, such as a numerical interval corresponding to voltage and current in different states. For example, the threshold interval corresponding to current can be (0A, 5A), (5A, 10A), and the display method is a method of displaying the line state. For example, when the electric energy related information (such as current) corresponding to line 1 is in the threshold display interval (0A, 5A), the corresponding indicator light is green, and when the current value corresponding to line 2 is (5A, 10A), the corresponding indicator light is red.

[0132] It is not difficult to understand that receiving the attribute labels of the twin connection lines configured by the user and determining whether each line has strong current attributes or weak current attributes helps to apply different control strategies in different categories of circuits and configure the display labels of the lines, including multiple threshold display intervals and their corresponding display methods. In this way, the line status can be intuitively displayed, such as changes in key parameters such as current and voltage.

[0133] B3, obtain the status information of each twin module and twin connection line within a preset time period, and generate an optimization processing plan for the special equipment energy storage energy recovery and energy saving system based on the status information.

[0134] It is understandable that the preset time period is a pre-set time period, for example, it may be 8:00-9:00.

[0135] It is not difficult to understand that the status information of each twin module and its connecting lines within a preset time period, including data such as power flow and load changes, is obtained. Based on the collected status information, an optimization processing plan for the special equipment energy storage energy recovery and energy-saving system is generated. This plan may include measures such as adjusting energy distribution, optimizing load balance, and improving energy efficiency.

[0136] Through the above implementation, combined with real-time status information, an optimization plan is dynamically generated to ensure that the system can maintain efficient operation under different working conditions.

[0137] In some embodiments, the specific implementation steps of step B3 (obtaining the status information of each twin module and twin connection line within a preset time period, and generating an optimization processing scheme for the special equipment energy storage type energy recovery and energy saving system based on the status information) include:

[0138] B31, obtaining status information of the energy storage device within a preset time period, extracting a first time period when the energy storage device reaches a first upper limit of electric energy information, and extracting a second time period when the energy storage device is in a state of waiting for charging.

[0139] It can be understood that in order to optimize the special equipment energy storage type energy recovery and energy saving system, the status information corresponding to the energy storage device within the preset time period can be obtained, and the corresponding first time period and second time period can be extracted, so that the corresponding first judgment coefficient can be accurately determined later, so that the system can be optimized according to the status of the energy storage device.

[0140] Among them, the first time period is the time period when the energy storage device is fully charged and does not need to be charged further, that is, the time period when the energy storage device reaches the first upper limit power information. For example, within the preset time period of 30 days, there are 25 days in which the device is fully charged at all times, and the corresponding first time period is 35 days. The second time period is the time period when the energy storage device is in a waiting state for charging. For example, if the device is not fully charged and is in a waiting state for 5 days, the corresponding second time period is 5 days.

[0141] B32, obtaining a first judgment coefficient based on a comparison between the first time period and the second time period.

[0142] It can be understood that the first judgment coefficient is a value for judging the state of the energy storage device in the circuit, that is, the ratio of the first time period to the second time period.

[0143] It is not difficult to understand that this coefficient can be used to quantify the charging and discharging balance of the energy storage device within a preset time period.

[0144] B33, if the first judgment coefficient falls within the first threshold interval, a battery unsaturation reminder message is generated, and the number of special equipment that can be connected again is generated based on an analysis of the current connection relationship of the special equipment energy storage type energy recovery and energy saving system.

[0145] It is understandable that if the judgment coefficient indicates that the energy storage device has not reached the ideal charging state (that is, the coefficient falls into the first threshold interval), a reminder message of unsaturated power storage is generated. This information prompts the system that there may be energy storage capacity that is not effectively utilized. Based on the current connection relationship, it analyzes whether the system can connect to more special equipment. If so, the number of special equipment that can be connected again is calculated and generated, which helps to make full use of the system's energy storage capacity and improve overall energy efficiency.

[0146] The first threshold interval is a numerical interval for determining that the energy storage device is not saturated.

[0147] In some embodiments, the specific implementation steps of step B33 (if the first judgment coefficient falls within the first threshold interval, generating the power storage unsaturated reminder information, analyzing the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, and generating the number of special equipment that can be connected again) include:

[0148] B331, counting the average power of the energy storage device in the second time period, and calculating a first power ratio based on the average power and the rated capacity of the energy storage device.

[0149] It can be understood that the average power is the average power value stored by the energy storage device in the second time, the rated capacity is the standard continuous storage capacity of the energy storage device, and the first power ratio is the ratio of the corresponding power stored by the energy storage device in the second time period to the rated capacity of the energy storage device, that is, the ratio of the average power to the rated capacity, such as 10%, 20%, etc. This ratio reflects the usage of the energy storage device in the time period relative to its maximum energy storage capacity.

[0150] B332, obtain the first number of special equipment that realizes energy recovery connection relationship based on energy storage device in the special equipment energy storage type energy recovery and energy saving system, and divide the first power ratio by the first number of the special equipment to obtain the first equipment ratio.

[0151] It can be understood that the first quantity is the number of special equipment currently connected to the energy storage device and participating in energy recovery. For example, currently 5 special equipment can be used for energy recovery, that is, the first quantity is 5, and the first equipment proportion is the ratio of the first power proportion to the first quantity. The proportion provides the average contribution or load of each special equipment to the energy storage device. For example, when the first power is 20% and the first quantity is 5, 20% ÷ 5 = 4%, which means that the recoverable power of each special equipment can charge 4% of the energy storage device.

[0152] B333, subtract the first electricity proportion from the preset second electricity proportion and divide the result by the first equipment proportion to obtain a first increase coefficient, and weight the first increase coefficient according to a preset weight to generate the number of special equipment that is reconnected.

[0153] It can be understood that the first increase coefficient is the additional equipment load that the system can withstand, that is, the difference between the preset second power ratio and the first power ratio divided by the first equipment ratio. This coefficient reflects that in the current state, various system factors (such as equipment type, priority, etc.) are taken into account to influence the access decision, so that the first increase coefficient can be weighted according to the preset weight. Through the weighted first increase coefficient, the number of special equipment that can be connected again is generated, so that the system can dynamically adjust the equipment access according to the real-time status, improve the overall energy efficiency, and make better use of the unsaturated energy storage capacity.

[0154] The second power proportion is a proportion of power in the device that is preset manually, for example, it may be 50%, and the preset weight is a preset weight value for calculating the number of connected special equipment.

[0155] B34, if the first judgment coefficient falls within the second threshold interval, then a battery saturation reminder message is generated, and based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, an analysis is performed to generate a reminder number for newly built energy storage devices and a connection relationship between each special equipment and the energy storage device.

[0156] It can be understood that when the first judgment coefficient falls into the second threshold interval, this usually indicates that the energy storage device is often in a saturated state within a preset time period, that is, the power of the energy storage device often reaches the upper limit, and there may be excess energy that is not effectively stored. In this case, a storage saturation reminder message is generated. This message prompts the system that it may need to expand its energy storage capacity to avoid energy waste. In addition, the present invention analyzes and generates the number of new energy storage devices that may need to be built based on the current connection relationship and system requirements. This suggestion helps the system operator evaluate whether it is necessary to increase the energy storage device to accommodate the excess energy. At the same time, the connection relationship between each special equipment and the existing energy storage device can be analyzed and evaluated to determine the connection relationship between the newly built energy storage device and each special equipment, so as to enable the normal flow of energy and improve storage efficiency.

[0157] The second threshold interval is a numerical interval for determining whether the energy storage device is saturated with electricity, and the reminder quantity is the number of new energy storage devices that need to be built.

[0158] It is not difficult to understand that by identifying the saturation state of the energy storage device, the system configuration can be adjusted in time to prevent energy waste, and the energy storage devices and quantities that need to be added can be calculated to increase the total energy storage capacity of the system, thereby better meeting energy recovery and storage needs. In addition, based on the connection relationship between the equipment and the energy storage device, it is ensured that energy is stored and utilized in the most efficient way to improve the overall efficiency of the system.

[0159] In some embodiments, the specific implementation steps of step B34 (if the first judgment coefficient falls within the second threshold interval, generating storage saturation reminder information, analyzing based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, generating the reminder number of the newly built energy storage device and the connection relationship between each special equipment and the energy storage device) include:

[0160] B341, counting the discharge value of each original brake resistor in the first time period, and obtaining the rated discharge amount per unit time based on the sum of the discharge values ​​of all original brake resistors in the first time period.

[0161] It can be understood that the discharge value is the amount of electricity discharged by each original braking resistor, and the discharge value reflects the energy release of each original braking resistor in the first time period. The larger the discharge value of the original braking resistor, the less electricity is charged to the energy storage device.

[0162] The rated discharge capacity is the sum of the discharge values ​​of all the original brake resistors in the first time period. The rated discharge capacity can be used to know the amount of wasted electricity released by all the original brake resistors in the first time period.

[0163] B342, obtaining the rated charge capacity of the energy storage device in the charging state, performing proportional calculation based on the rated discharge capacity and the rated charge capacity to obtain a first proportional coefficient, and weighting the first proportional coefficient to obtain the reminder quantity of the newly built energy storage device.

[0164] It can be understood that the rated charge capacity is the rated value of the energy storage device in the charging state. For example, the rated charge capacity is 1A per second, and the first proportional coefficient is the proportional value of the corresponding charge and discharge capacity of the energy storage device. This coefficient is used to measure the matching degree of the charging and discharging capabilities of the energy storage device. For example, when the rated discharge capacity is 10A per second and the rated charge capacity is 1A per second, the first proportional coefficient can be 10, and after weighted processing, the corresponding number is calculated to be 9, so that 9 new energy storage devices can be added to recover the energy released by the original braking resistor and improve the energy recovery efficiency.

[0165] B343, obtain the discharge state time of the original brake resistor corresponding to each special equipment and sort it in descending order to obtain a selection sequence.

[0166] It should be noted that the working efficiency of each special equipment is different. Therefore, the energy that can be recovered by different special equipment is also inconsistent. It is impossible to accurately determine whether the amount of electricity released by each device is consistent. Therefore, the selection sequence can be obtained according to the discharge state time of the original braking resistor corresponding to each special equipment, so as to group the special equipment so that they can be assigned to matching energy storage devices. For example, every 3 special equipment are selected and assigned to an energy storage device so that the energy storage device can recover the energy of the corresponding equipment, so that the energy corresponding to the special equipment can meet the rated charging value of the energy storage device for energy recovery, so as to improve the energy recovery efficiency and make more effective use of energy storage resources.

[0167] It can be understood that the selection sequence is to select special equipment to match the special equipment arrangement sequence for corresponding energy storage devices to store electricity.

[0168] B344, count the energy storage labels of all energy storage devices and randomly sort them to obtain a label sequence, and select the special equipment in the sequence by forward screening based on the order of the label sequence. After completing a forward screening, select the special equipment in the sequence by reverse screening in sequence, and repeat the above steps until all special equipment in the selection sequence is selected. Each forward or reverse screening determines a special equipment corresponding to each energy storage label.

[0169] It can be understood that the energy storage tag is a tag corresponding to the energy storage device, such as A1, A2, etc., and the tag sequence is a sequence of energy storage tags corresponding to all energy storage devices. For example, when there are 3 energy storage devices and the corresponding energy storage tags are A1, A2, and A3, the tag sequence can be (A1, A2, A3).

[0170] It is not difficult to understand that, based on the order of the label sequence, the special equipment in the selection sequence is selected in a forward screening process. After completing a forward screening process, the special equipment in the selection sequence is selected in a reverse screening process. The above steps are repeated until all the special equipment in the selection sequence is selected. In each forward or reverse screening process, a special equipment corresponding to each energy storage label is determined. This two-way screening method ensures that the connection relationship between the energy storage device and the special equipment is optimized to achieve reasonable recycling.

[0171] For example, when there are 9 special equipments, the selection sequence is (special equipment 1, special equipment 2, special equipment 3, special equipment 4, special equipment 5, special equipment 6, special equipment 7, special equipment 8, special equipment 9), and when forward selection is performed according to the order of the label sequence, special equipment 1 can be selected for energy storage equipment A1, special equipment 2 can be selected for energy storage equipment A2, and special equipment 4 can be selected for energy storage equipment A3. Then, reverse selection can be performed to select special equipment 9 for energy storage equipment A1, special equipment 8 for energy storage equipment A2, and special equipment 9 for energy storage equipment A3. Special equipment 7 is selected, and the forward selection step is repeated. It can be obtained that special equipment 4 is selected for energy storage device A1, special equipment 5 is selected for energy storage device A2, and special equipment 6 is selected for energy storage device A3. In summary, the special equipment selected for energy storage device A1 are special equipment 1, special equipment 9, and special equipment 4, the special equipment selected for energy storage device A2 are special equipment 2, special equipment 8, and special equipment 5, and the special equipment selected for energy storage device A3 are special equipment 3, special equipment 7, and special equipment 6, so as to reasonably recover energy.

[0172] The present invention also provides a storage medium, in which a computer program is stored. When the computer program is executed by a processor, it is used to implement the methods provided by the various embodiments described above.

[0173] Among them, the storage medium can be a computer storage medium or a communication medium. The communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The computer storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer. For example, the storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an application-specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). In addition, the ASIC can be located in a user device. Of course, the processor and the storage medium can also exist in a communication device as discrete components. The storage medium can be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0174] The present invention also provides a program product, which includes an execution instruction, which is stored in a storage medium. At least one processor of a device can read the execution instruction from the storage medium, and at least one processor executes the execution instruction so that the device implements the methods provided in the above various embodiments.

[0175] In the above-mentioned terminal or server embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0176] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special equipment energy storage type energy recovery and energy saving system, characterized in that: include: A first inverter DC bus bar connected to each special equipment respectively; A DC bus, wherein a plurality of first connection points of the DC bus are respectively connected to each first inverter DC bus; A DCDC conversion device, wherein a high voltage side of the DCDC conversion device is connected to a second connection point of the DC bus, and a low voltage side of the DCDC conversion device is connected to an energy storage device; Also includes: If it is determined that the energy storage device meets the energy storage condition, obtaining first electric energy information of the DC bus; If it is determined that the first electric energy information of the DC bus is greater than the first preset value, the first electric energy information of the DC bus is transformed based on the DCDC conversion device to obtain second electric energy information; If it is determined that the second electric energy information has an upward trend in the time series dimension, charging the energy storage device based on the second electric energy information; After determining that the energy storage device has reached a first upper limit of electric energy, controlling the original brake resistor of the special equipment to discharge, and no longer charging the energy storage device until the energy storage device reaches a second upper limit of electric energy, the second upper limit of electric energy being less than the first upper limit of electric energy; Also includes: If it is determined that the second electric energy information has a downward trend in the time series dimension, the energy storage device is controlled to discharge the target load, and the energy storage device stops discharging and is set to a waiting state for charging after the energy storage device reaches the first lower limit electric energy information; Also includes: Establishing a twin module corresponding to each device in the energy storage type energy recovery and energy saving system of special equipment, and establishing a twin connection line between all the twin modules according to the electrical connection relationship between the twin modules; Receive a line attribute label and a line display label configured by a user for each twin connection line, wherein the line attribute label includes at least one of a strong current attribute or a weak current attribute, and the line display label includes multiple threshold display intervals and a display mode corresponding to each threshold display interval; Acquire the status information of each twin module and twin connection line within a preset time period, and generate an optimization processing scheme for the energy storage type energy recovery and energy saving system of special equipment based on the status information; The step of obtaining status information of each twin module and twin connection line within a preset time period, and generating an optimization processing scheme for the energy storage type energy recovery and energy saving system of special equipment based on the status information, includes: Acquire status information of the energy storage device within a preset time period, extract a first time period when the energy storage device reaches a first upper limit of electric energy information, and extract a second time period when the energy storage device is in a state of waiting for charging; Obtaining a first judgment coefficient based on a comparison between the first time period and the second time period; If the first judgment coefficient falls within the first threshold interval, a power storage unsaturated reminder message is generated, and the number of special equipment that can be connected again is generated based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system; If the first judgment coefficient falls within the second threshold interval, a storage saturation reminder message is generated, and based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, a reminder number of newly built energy storage devices and a connection relationship between each special equipment and the energy storage device are generated; If the first judgment coefficient falls within the first threshold interval, the power storage unsaturated reminder information is generated, and the number of special equipment that can be connected again is generated based on the current connection relationship of the special equipment energy storage type energy recovery and energy saving system, including: Counting an average power of the energy storage device in the second time period, and calculating a first power proportion based on the average power and a rated capacity of the energy storage device; Obtaining a first number of special equipment that realizes an energy recovery connection relationship based on an energy storage device in a special equipment energy storage type energy recovery and energy saving system, and dividing the first power proportion by the first number of the special equipment to obtain a first equipment proportion; The first increase coefficient is obtained by subtracting the first electricity proportion from the preset second electricity proportion and dividing the result by the first equipment proportion. The first increase coefficient is weighted according to the preset weight to generate the number of special equipment that is re-connected.

2. The energy storage type energy recovery and energy saving system for special equipment according to claim 1, characterized in that: The first inverter DC bus is connected to at least the original braking resistor, fuse, contactor and DC meter of the special equipment in sequence in the direction toward the DC bus.

3. The energy storage type energy recovery and energy saving system for special equipment according to claim 1, characterized in that: A circuit breaker and a DC meter are provided at the connection line between the DC bus and the DCDC conversion device.

4. The energy storage type energy recovery and energy saving system for special equipment according to claim 1, characterized in that: The DCDC conversion device includes a TPC power supply interface, a TPC communication interface, a protection interface, an AC power supply interface, an emergency stop pin and an indicator light pin; The TPC power supply interface is connected to the local interactive terminal; The TPC communication interface is connected to the local interactive terminal and the electric meter respectively; The TPC power supply interface and protection interface are respectively connected to the energy storage protection module; The low voltage side of the DCDC conversion device is connected to the energy storage device through a DC meter; The AC power supply interface is connected to the meter power supply and the system power supply respectively; The emergency stop pin is connected to the emergency stop button; The indicator light pins are connected to a plurality of indicator lights respectively.

5. The energy storage type energy recovery and energy saving system for special equipment according to claim 1, characterized in that: If the first judgment coefficient falls within the second threshold interval, the power storage saturation reminder information is generated, and the current connection relationship of the special equipment energy storage type energy recovery and energy saving system is analyzed to generate the reminder number of the newly built energy storage device and the connection relationship between each special equipment and the energy storage device, including: Counting the discharge value of each original brake resistor in the first time period, and obtaining the rated discharge amount per unit time based on the sum of the discharge values ​​of all the original brake resistors in the first time period; Acquire the rated charge capacity of the energy storage device in the charging state, calculate the first proportionality coefficient based on the rated discharge capacity and the rated charge capacity, and perform weighted processing on the first proportionality coefficient to obtain the reminder quantity of the newly built energy storage device; Obtain the discharge state time of the original brake resistor corresponding to each special equipment and sort them in descending order to obtain a selection sequence; The energy storage labels of all energy storage devices are counted and randomly sorted to obtain a label sequence. The special equipment in the sequence is selected by forward screening based on the order of the label sequence. After completing a forward screening, the special equipment in the sequence is selected by reverse screening in sequence. The above steps are repeated until all special equipment in the selection sequence is selected. Each forward or reverse screening determines a special equipment corresponding to each energy storage label.

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