Energy-saving power distribution control method for wire drawing machine

Abstract

The present invention provides an energy-saving power distribution control method for a wire drawing machine, which belongs to the field of auxiliary power distribution for wire drawing machines and solves the problems of unstable power consumption and high energy consumption during processing of existing wire drawing machines. The following steps are included: energy-saving design of wire drawing machines: cascade energy saving of multiple wire drawing machine production lines and modular energy-saving design of wire drawing machines; configuration of energy storage capacity of wire drawing machines; monitoring and analysis of working data of energy storage batteries by an energy efficiency control unit; energy efficiency and economic control and safety protection at the same time. The present invention can propose energy storage capacity configuration for wire drawing machines according to the electrical characteristics of the wire drawing machines, perform energy efficiency and economic control and safety protection, ensure economic charging and discharging logic under the premise of safety, ensure stable and reliable power consumption, green energy recovery and lowest electricity cost under normal production of wire drawing machines; energy recovery control logic and economic charging and discharging logic, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus, supplies power to other loads except the wire drawing machine, and realizes the arbitrage function.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary power distribution for wire drawing machines and relates to an energy-saving power distribution control method for wire drawing machines. Background Art

[0002] The wire drawing machine mainly uses the ductility of materials such as metal or plastic to apply tension to the material through the wire drawing die, so that the material gradually becomes thinner under the action of the die, and finally forms the required filaments. At present, there are two main types of glass fiber drawing machines, direct yarn drawing machines and cake yarn drawing machines.

[0003] The general components of the wire drawing machine are the machine body, control box, reversing disk, winding head A (operating machine head), winding head B (standby head, spare machine head, A and B alternate and serve as spare for each other), and wire arranger (to make the yarn swing left and right and wind around the machine head in a certain pattern). A glass fiber production line has about 200 wire drawing machines, which can be all direct yarn drawing machines or all cake yarn drawing machines, and there are also situations where both types are used at the same time.

[0004] However, the power consumption of multiple wire drawing machines is unstable when in use, and the local electricity price cannot fully match the load demand of the wire drawing machines, resulting in high power consumption, high power cost and damaged production benefits; the wire drawing machines have a large demand for braking energy recovery in the production process, and the current main solution to energy recovery is to use braking resistors, main motors and other methods to generate natural heat and consume, resulting in a large waste of energy.

[0005] How to develop energy-efficient and economical control methods and safety protection methods based on the electricity consumption characteristics of wire drawing machines, ensure stable and reliable electricity consumption, green energy recovery and lowest electricity cost under normal production conditions of wire drawing machines, and promote the rapid transformation of wire drawing machine production towards new energy is an urgent problem to be solved.

[0006] Based on this, we propose an energy-saving power distribution control method for wire drawing machines. Summary of the invention

[0007] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an energy-saving power distribution control method for a wire drawing machine. The technical problem to be solved by the invention is: how to realize the configuration of the energy storage capacity, energy efficiency and economic control and safety protection of the wire drawing machine according to the electrical characteristics of the wire drawing machine, to ensure stable and reliable electricity use, green energy recovery and the lowest electricity cost, and to achieve arbitrage.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A wire drawing machine energy-saving power distribution control method comprises the following steps:

[0010] Step 1, energy-saving design of wire drawing machine: 1.1, cascade energy-saving design of multiple wire drawing machine production lines, 1 to M wire drawing machine mobile units are cascaded, where m is an integer greater than or equal to 1, and each of them is equipped with a set of slow-start unit, energy storage battery, conversion device and energy efficiency control unit; 1.2, modular energy-saving design of wire drawing machine, each wire drawing machine is equipped with a set of wire drawing machine mobile unit, slow-start unit, energy storage battery, conversion device and energy efficiency control unit;

[0011] Step 2: Energy storage capacity configuration of wire drawing machine: 2.1. The power and capacity specifications of the energy storage battery are configured according to condition 1. Condition 1 is the total motor power P of the wire drawing machine. sum = =P 储能电池 And the total motor current I sum = =I 储能电池 , where m is the number of cascaded motor units of the wire drawing machine or the number of wire drawing machines, n is the number of corresponding conversion control modules in each wire drawing machine, m and n are both integers greater than or equal to 1, j is any value from 1 to m, and i is any value from 1 to n; 2.2, the power and capacity specifications of the energy storage battery are configured according to condition 2, and condition 2 is that the minimum voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U min And the maximum value is U max The minimum voltage between B+ and B- of the energy storage battery is and the maximum value is , =U max + , =U min + ,in and 2.3. Configure the energy efficiency control unit, which collects the status of the energy storage battery in real time, and controls the corresponding electrical components to complete the charging and discharging of the energy storage battery according to the status of the energy storage battery. It also supports receiving remote control commands and completes the charging and discharging actions and protection management in combination with the status of the energy storage battery.

[0012] Step 3: The energy efficiency control unit monitors and analyzes the working data of the energy storage battery. The voltage between the energy storage battery B+ and B- is U B The voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U D , when the energy efficiency control unit monitors the voltage range of the energy storage battery [U th1 , U th2 ] and the battery temperature range [T th1 , T th2 ], and at this time switch K1 or switch K2 is in the open state, the energy efficiency control unit controls switch K2 to close and synchronously controls the slow-start unit to work until U B=U D * ,in is an integer less than 1, at which time the closing switch K1 synchronously controls the slow-start unit to stop working;

[0013] Step four, perform energy efficiency and economic control and safety protection at the same time; when performing energy efficiency and economic control, energy control performs charge and discharge control and arbitrage according to the energy storage battery based on the operating characteristics of the wire drawing machine; when performing safety protection, it plays a role in protecting the energy storage battery, electrical circuits and personal safety.

[0014] The multiple cascade energy-saving design route of the wire drawing machine production line in step 1 includes several wire drawing machine mobile units, slow-start units, energy storage batteries, conversion devices and energy efficiency control units. The energy storage batteries and the conversion devices are connected by wires, and the AC busbar and the conversion device are connected by wires. The wire drawing machine mobile unit includes a conversion control module connected to the AC busbar wires and a conversion control module connected to the motor wires of the wire drawing machine. The conversion control modules are electrically connected, and the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device. The wires are respectively provided with There are switches K1 and K2, and a buffer unit is provided on the positive pole wire. The buffer unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wire of the wire drawing machine are all electrically connected to the energy efficiency control unit, and the switches K1 and K2 are all electrically connected to the energy efficiency control unit. The energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus. The connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-barrel signal transmission lines. A switch K3 is provided between the conversion device and the AC bus, and the switch K3 is electrically connected to the energy efficiency control unit.

[0015] The modular energy-saving design route of the wire drawing machine in the step 1 includes a slow-start unit, an energy storage battery, a conversion device and an energy efficiency control unit, a conversion control module connected to the motor wires of the wire drawing machine, the conversion control modules are all connected to the wires between the AC bus, the energy storage battery and the conversion device are connected by wires, the AC bus and the conversion device are connected by wires, the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device, switches K1 and switch K2 are respectively provided on the wires, and a buffer unit is provided on the positive wires, the slow-start unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wires of the wire drawing machine are all electrically connected to the energy efficiency control unit, and switches K1 and switch K2 are all electrically connected to the energy efficiency control unit, the energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus, the connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-barrel signal transmission lines, a switch K3 is provided between the conversion device and the AC bus, and switch K3 is electrically connected to the energy efficiency control unit, that is, the energy efficiency control unit controls the switch K3 on and off.

[0016] Steps for energy efficiency and economic control in step 4:

[0017] 4.1, the energy storage battery automatically discharges in the direction of the motor: when the winding head, wire arrangement reciprocating function, oiling or barrel change transverse movement corresponding to the motor M1~M2n in the wire drawing machine 1~m work, U B >U Dj , j is any value from 1 to m, then the energy storage battery automatically discharges toward the motor;

[0018] 4.2. The motor that stops by braking discharges to the outside: When the winding head, wire arrangement reciprocating function, oiling or barrel changing transverse movement corresponding to the motors M1~M2n in the wire drawing machine 1~m stops by braking, the motor that stops by braking discharges to the outside;

[0019] 4.3, the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold And at this time in the charging time period, that is, when the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold At this time, during the charging time period, the energy efficiency control unit controls switches K1 and K2 to be disconnected, and switches K3 to be closed, and controls the conversion device to charge the energy storage battery until the total voltage of the energy storage battery exceeds the battery charging threshold U 充th Or the highest cell voltage of the energy storage battery exceeds the cell charging threshold , then the energy efficiency control unit controls the conversion device to stop working and disconnects switch K3, and simultaneously controls according to step 3;

[0020] 4.4, control the energy storage battery to discharge to the AC bus, if it is in the discharge time period, and the power consumed by the motor running during this time period < ,in, is a coefficient less than 1, If there is remaining power in the energy storage battery, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus to supply power to other loads except the wire drawing machine, thereby realizing the arbitrage function.

[0021] The motor that stops by braking in step 4.2 discharges externally in the following situations:

[0022] 4.2.1 If P 发 >P 耗 , resulting in U B Dj , that is, if the total power P discharged by the motor is 发 >Total power P of the motor being run​耗 , resulting in U B Dj , j is any value from 1 to m, then the motor charges the energy storage battery;

[0023] 4.2.2. The energy efficiency control unit detects a full-tank signal: If the energy efficiency control unit detects a full-tank signal and the energy storage battery cannot be charged at this time, the energy efficiency control unit controls the switch K3 to close and controls the conversion device to discharge to the AC bus for energy recovery and utilization until the full-tank signal disappears, and then controls the switch K3 to open again to stop discharging to the AC bus;

[0024] 4.2.3 If P 发 <P 耗 , that is, if the total power P discharged by the motor is 发 <Total power P of the motor being run 耗 , 4.2.3A, if there is U B Dj , j is any value from 1 to m, and it is not in the charging time period, then the control switch K1 is disconnected to prevent the conversion control module from charging the energy storage battery; 4.2.3A, if there is U B >U Dj , j is any value from 1 to m, then the energy storage battery automatically discharges toward the motor.

[0025] The operation characteristics of the wire drawing machine for energy efficiency and economic control in step 4 include: a full barrel signal of the wire drawing machine and a full barrel motor braking signal; 1) a full barrel signal of the wire drawing machine: as a pre-braking signal of the wire drawing machine brake motor, to prepare for charging the energy storage battery; 2) a full barrel motor braking signal is a voltage U across the conversion control module of the wire drawing machine. D , at this time, the conditions for instantaneous determination of whether to charge.

[0026] The power flow of the energy-saving design circuit of the wire drawing machine in step 3 and step 4.1 is from the AC bus and the energy storage battery to the motor of the wire drawing machine.

[0027] In the step 4.2.1, the power flow of the wire drawing machine energy-saving design circuit is from the motor of the wire drawing machine to the AC bus and the energy storage battery.

[0028] The full-bore signal in step 4.2.2 is the pressure signal output by the pressure sensor on the winding head reel or is used to identify whether the reel is full based on the full-bore speed characteristics of the wire drawing machine motor. According to the wire drawing machine motor operation curve, t1 is the motor acceleration climbing time, t2 is the stable speed running time, when t>(t1+t2), the winding head corresponding to the motor is full.

[0029] In step 4.2.2, the energy efficiency control unit monitors the full barrel signal and performs advance charging and discharging preparation according to the running time t of the wire drawing machine motor;​​

[0030] 1) It is known that the time required for the full bobbin of the wire drawing machine is \(t_3 = t_1 + t_2\) and the power consumption is \(Q_0\).

[0031] 2) When the wire drawing machine starts drawing, the power of the energy storage battery is \(Q_1\). It is expected that when the wire drawing machine is full bobbin, the remaining power of the energy storage battery is \(Q_2 = Q_1 - Q_0\).

[0032] 3) The external discharge amount of the wire drawing machine from full bobbin braking to shutdown is \(Q_3\), which is the braking energy.

[0033] 4) According to the operation energy data set (\(Q_0\), \(Q_3\), \(t\)) of the wire drawing machine, switch \(K\), where switch \(K\) is the time series length from the current position of the wire drawing machine operation. It is expected that if the rechargeable amount \(Q_4\) of the energy storage battery is less than \(Q_3\) after time \(t\), the energy efficiency control unit controls the energy storage unit switch \(K_3\) to close and discharge to the power grid during the peak time period before the full bobbin signal of the wire drawing machine occurs. The discharge amount \(Q_5\) is \(Q_4 - Q_3\), preparing the charging energy space for the energy storage battery and simultaneously conducting discharge arbitrage.

[0034] The steps for safety protection in step 4 are as follows:

[0035] 4A. The total voltage of the energy storage battery is lower than the battery discharge threshold \(U\) 放th Or the lowest single - cell voltage of the energy storage battery is lower than the single - cell discharge threshold And it is not in the charging time period at this time. That is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold \(U\) 放th Or the lowest single - cell voltage of the energy storage battery is lower than the single - cell discharge threshold And it is not in the charging time period at this time, then the energy efficiency control unit controls switch \(K1\) and switch \(K2\) to disconnect, playing a protective role for the energy storage battery until it enters the charging time period, and then charging the energy storage battery according to step 6.

[0036] 4B. The battery temperature of the energy storage battery exceeds the battery temperature range \([T\) th1 , \(T\) th2 , that is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the battery temperature of the energy storage battery exceeds the battery temperature range \([T\) th1 , \(T\) th2 , then the energy efficiency control unit controls switch \(K1\) and switch \(K2\) to disconnect, playing a protective role for the energy storage battery until the battery temperature returns to the specified range, and then operating according to step 4.3.

[0037] 4C. Any of \(A1\sim Am\) exceeds the maximum current operation threshold \(I\) th , that is, during the operation of the wire drawing machine, any of \(A1\sim Am\) exceeds the maximum current operation threshold \(I\) th, the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the electrical circuit until the main current of the wire drawing machine returns to normal, and then acts according to step three;

[0038] 4D. When any of the wire drawing machines 1 to M needs maintenance, the energy efficiency control unit controls the switches K1 and K2 to disconnect, ensuring that the electrical circuit is out of power, thus protecting the personnel. After the maintenance is completed, the steps in step 3 are followed.

[0039] Compared with the prior art, the energy-saving power distribution control method of the wire drawing machine has the following advantages:

[0040] According to the electrical characteristics of the wire drawing machine, the energy storage capacity configuration of the wire drawing machine is proposed, and energy efficiency and economic control and safety protection are carried out according to the electricity consumption characteristics of the wire drawing machine, to ensure the economic charging and discharging logic under the premise of safety, to ensure stable and reliable electricity consumption, green energy recovery and the lowest electricity cost under normal production of the wire drawing machine, and to promote the rapid transformation of the wire drawing machine production to the direction of new energy; energy recovery control logic and economic charging and discharging logic, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus, to supply power to other loads except the wire drawing machine, and realize the arbitrage function. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic flow chart of the method of the present invention.

[0042] Figure 2 It is a schematic flow chart of step one in the present invention.

[0043] Figure 3 It is a schematic flow diagram of step 2 in the present invention.

[0044] Figure 4 It is a schematic flow diagram of step three in the present invention.

[0045] Figure 5 It is a flow chart of energy efficiency and economic control in step 4 of the present invention.

[0046] Figure 6 It is a schematic diagram of the process of step 4.2 in the present invention.

[0047] Figure 7 It is a schematic diagram of the safety protection process in step 4 of the present invention.

[0048] Figure 8 It is a schematic diagram of the route design of Example 1 of the present invention.

[0049] Fig. 9 It is a schematic diagram of the route design of Example 2 of the present invention.

[0050] Fig.10 It is a schematic diagram of the discharge power flow of the energy storage battery in the present invention.

[0051] Fig.11 It is a schematic diagram of the operation of the motor of the wire drawing machine in the present invention.

[0052] Fig.12 It is a schematic diagram of the power flow of the present invention discharging to the power grid.

[0053] Fig.13 It is a schematic diagram of the charging power flow of the energy storage battery in the present invention. DETAILED DESCRIPTION

[0054] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0055] like Figure 1-Figure 13 As shown, the energy-saving power distribution control method of the wire drawing machine includes the following steps:

[0056] Step 1, energy-saving design of wire drawing machine: 1.1, cascade energy-saving design of multiple wire drawing machine production lines, 1 to M wire drawing machine motor units are cascaded, and each of them is equipped with a set of slow-start unit, energy storage battery, conversion device and energy efficiency control unit; 1.2, modular energy-saving design of wire drawing machine, each wire drawing machine is equipped with a set of wire drawing machine motor unit, slow-start unit, energy storage battery, conversion device and energy efficiency control unit;

[0057] Step 2: Energy storage capacity configuration of wire drawing machine: 2.1. The power and capacity specifications of the energy storage battery are configured according to condition 1. Condition 1 is the total motor power P of the wire drawing machine. sum = =P 储能电池 And the total motor current I sum = =I 储能电池 , where m is the number of cascaded motor units of the wire drawing machine or the number of wire drawing machines, n is the number of corresponding conversion control modules in each wire drawing machine, m and n are both integers greater than or equal to 1, j is any value from 1 to m, and i is any value from 1 to n; 2.1. The power and capacity specifications of the energy storage battery are configured according to condition 2. Condition 2 is that the minimum voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U min And the maximum value is U max The minimum voltage between B+ and B- of the energy storage battery is and the maximum value is , =U max + , =U min + ,in and 2.3. Configure the energy efficiency control unit, which collects the status of the energy storage battery in real time, and controls the corresponding electrical components to complete the charging and discharging of the energy storage battery according to the status of the energy storage battery. It also supports receiving remote control commands and completes the charging and discharging actions and protection management in combination with the status of the energy storage battery.

[0058] Step 3: The energy efficiency control unit monitors and analyzes the working data of the energy storage battery. The voltage between the energy storage battery B+ and B- is U B The voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U D , when the energy efficiency control unit monitors the voltage range of the energy storage battery [U th1 , U th2 ] and the battery temperature range [T th1 , T th2 ], and at this time switch K1 or switch K2 is in the open state, the energy efficiency control unit controls switch K2 to close and synchronously controls the slow-start unit to work until U B =U D * (in is an integer less than 1), at this time, the switch K1 is closed to synchronously control the slow-start unit to stop working;

[0059] Step four, perform energy efficiency and economic control and safety protection at the same time; when performing energy efficiency and economic control, energy control performs charge and discharge control and arbitrage according to the energy storage battery based on the operating characteristics of the wire drawing machine; when performing safety protection, it plays a role in protecting the energy storage battery, electrical circuits and personal safety.

[0060] The multiple cascade energy-saving design route of the wire drawing machine production line in step 1 includes several wire drawing machine mobile units, slow-start units, energy storage batteries, conversion devices and energy efficiency control units. The energy storage batteries and the conversion devices are connected by wires, and the AC busbar and the conversion device are connected by wires. The wire drawing machine mobile unit includes a conversion control module connected to the AC busbar wires and a conversion control module connected to the motor wires of the wire drawing machine. The conversion control modules are electrically connected, and the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device. Switches K1 and switch K2 are respectively provided on the wires. A buffer unit is provided on the positive pole wire, and the slow-start unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wire of the wire drawing machine are all electrically connected to the energy efficiency control unit, and the switch K1 and the switch K2 are both electrically connected to the energy efficiency control unit, the energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus, the connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-tube signal transmission lines, a switch K3 is provided between the conversion device and the AC bus, and the switch K3 is electrically connected to the energy efficiency control unit, that is, the energy efficiency control unit controls the switch K3 to be opened and closed, such as Figure 8 shown.

[0061] The modular energy-saving design route of the wire drawing machine in step one includes a slow-start unit, an energy storage battery, a conversion device and an energy efficiency control unit, a conversion control module connected to the motor wires of the wire drawing machine, the conversion control modules are all connected to the wires between the AC bus, the energy storage battery and the conversion device are connected by wires, the AC bus and the conversion device are connected by wires, the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device, switches K1 and switch K2 are respectively provided on the wires, and a buffer unit is provided on the positive wires, the slow-start unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wires of the wire drawing machine are all electrically connected to the energy efficiency control unit, and switches K1 and switch K2 are all electrically connected to the energy efficiency control unit, the energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus, the connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-barrel signal transmission lines, a switch K3 is provided between the conversion device and the AC bus, and switch K3 is electrically connected to the energy efficiency control unit, that is, the energy efficiency control unit controls the switch K3 on and off, such as Fig. 9 shown.

[0062] Steps for energy efficiency and economic control in step 4:

[0063] 4.1, the energy storage battery automatically discharges in the direction of the motor: when the winding head, wire arrangement reciprocating function, oiling or barrel change transverse movement corresponding to the motor M1~M2n in the wire drawing machine 1~m work, U B >U Dj (j is any value from 1 to m), the energy storage battery automatically discharges toward the motor;

[0064] 4.2. The motor that stops by braking discharges to the outside: When the winding head, wire arrangement reciprocating function, oiling or barrel changing transverse movement corresponding to the motors M1~M2n in the wire drawing machine 1~m stops by braking, the motor that stops by braking discharges to the outside;

[0065] 4.3, the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold And at this time in the charging time period, that is, when the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold At this time, during the charging time period, the energy efficiency control unit controls switches K1 and K2 to be disconnected, and switches K3 to be closed, and controls the conversion device to charge the energy storage battery until the total voltage of the energy storage battery exceeds the battery charging threshold U 充th Or the highest cell voltage of the energy storage battery exceeds the cell charging threshold , then the energy efficiency control unit controls the conversion device to stop working and disconnects switch K3, and simultaneously controls according to step 3;

[0066] 4.4, control the energy storage battery to discharge to the AC bus, if it is in the discharge time period, and the power consumed by the motor running during this time period < ,in, is a coefficient less than 1, If it is the remaining power of the battery, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus to supply power to other loads except the wire drawing machine, thereby realizing the arbitrage function.

[0067] The motor that stops by braking in step 4.2 discharges externally in the following situations:

[0068] 4.2.1 If P 发 >P 耗 , resulting in U B Dj , that is, if the total power P discharged by the motor is 发 >Total power P of the motor being run 耗 , resulting in U B Dj (j is any value from 1 to m), then the motor charges the energy storage battery;

[0069] 4.2.2. The energy efficiency control unit detects a full-tank signal: If the energy efficiency control unit detects a full-tank signal and the energy storage battery cannot be charged at this time, the energy efficiency control unit controls the switch K3 to close and controls the conversion device to discharge to the AC bus for energy recovery and utilization until the full-tank signal disappears, and then controls the switch K3 to open again to stop discharging to the AC bus;

[0070] 4.2.3 If P 发 <P 耗 , that is, if the total power P discharged by the motor is 发 <Total power P of the motor being run 耗 , 4.2.3A, if there is U B Dj (j is any value from 1 to m), and it is not in the charging time period, then the control switch K1 is disconnected to prevent the conversion control module from charging the energy storage battery; 4.2.3B, if there is U B >U Dj (j is any value from 1 to m), then the energy storage battery automatically discharges toward the motor.

[0071] ​​​The operating characteristics of the wire drawing machine for energy efficiency economic control in Step 4 include: the full bobbin signal of the wire drawing machine, the full bobbin motor braking signal; 1) The full bobbin signal of the wire drawing machine: As the signal before the braking of the wire drawing machine brake motor, it prepares for charging the energy storage battery; 2) The full bobbin motor braking signal is the voltage U across the conversion control module D , which is the condition for instantaneously determining whether to charge.

[0072] In Step 3 and Step 4.1, the power flow of the energy-saving design circuit of the wire drawing machine is from the AC bus and the energy storage battery to the motor of the wire drawing machine, as Fig.10 shown.

[0073] In Step 4.2.1, the power flow of the energy-saving design circuit of the wire drawing machine is from the motor of the wire drawing machine to the AC bus and the energy storage battery, as Fig.13 shown.

[0074] In Step 4.2.2, the full bobbin signal is the pressure signal output by the pressure sensor on the reel of the winding head or identifies whether the bobbin is full according to the full bobbin rotational speed characteristic of the wire drawing machine motor. The operating curve of the wire drawing machine motor is as Fig.11 shown, where t1 is the motor acceleration climbing time, t2 is the stable rotational speed operating time. When t > (t1 + t2), the winding head corresponding to the motor is full of the bobbin.

[0075] In Step 4.2.2, the energy efficiency control unit monitors the full bobbin signal and makes preparations for early charge and discharge according to Fig.11 the operating time t;

[0076] 1) It is known that the wire drawing machine needs time t3 = t1 + t2 to be full of the bobbin and the power consumption is Q0;

[0077] 2) When the wire drawing machine starts drawing wire, the power of the energy storage battery is Q1, and it is expected that the remaining power of the energy storage battery when the wire drawing machine is full of the bobbin is Q2 = Q1 - Q0;

[0078] 3) The external discharge amount of the wire drawing machine from full bobbin braking to shutdown is Q3, that is, the braking energy in Fig.11 ;

[0079] 4) According to the operating energy data set (Q0, Q3, t) of this wire drawing machine, switch K, where switch K is the time series length from the start of the wire drawing machine operation to the current position; it is expected that if the rechargeable amount Q4 of the energy storage battery after time t is < Q3, the energy efficiency control unit controls the energy storage unit switch K3 to close during the peak time period before the full bobbin signal of the wire drawing machine occurs to discharge to the power grid, and the discharge amount Q5 is Q4 - Q3, preparing the charging energy space for the energy storage battery and simultaneously arbitraging by discharging. The discharge method is as Fig.12 shown.

[0080] Steps for safety protection in Step 4:

[0081] 4A, the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold And at this time, it is not in the charging time period, that is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold If the charging time period is not reached at this time, the energy efficiency control unit controls the switch K1 and the switch K2 to be disconnected, thereby protecting the energy storage battery until the charging time period is reached, and then the energy storage battery is charged according to step 6;

[0082] 4B. The battery temperature of the energy storage battery exceeds the battery temperature range [T th1 , T th2 ], that is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the battery temperature of the energy storage battery exceeds the battery temperature range [T th1 , T th2 ], the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the energy storage battery until the temperature of the energy storage battery returns to a specified range, and then proceeds according to step 4.3;

[0083] 4C, A1~Am arbitrarily exceeds the maximum current operation threshold I th , that is, during the operation of the wire drawing machine, A1~Am arbitrarily exceeds the maximum current operation threshold I th , the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the electrical circuit until the main current of the wire drawing machine returns to normal, and then acts according to step three;

[0084] 4D. When any of the wire drawing machines 1 to M needs maintenance, the energy efficiency control unit controls the switches K1 and K2 to disconnect, ensuring that the electrical circuit is out of power, thus protecting the personnel. After the maintenance is completed, the steps in step 3 are followed.

[0085] Example 1 is a cascade energy-saving design for multiple wire drawing machine production lines, and its specific electrical topology is as follows: Figure 8 As shown, there are 1 to M wire drawing machine motor units cascaded, equipped with a set of slow-start unit, energy storage battery, conversion device and energy efficiency control unit (which can be installed in one box or in multiple boxes), with production line type multiple wire drawing machine cascade energy control function, among which M1~M2n correspond to the driving motors in the wire drawing machines, and the randomly allocated motors drive several wire drawing winding heads, wire arrangement reciprocating function, oiling and barrel changing transverse movement.

[0086] Embodiment 2 is a modular energy-saving design of a wire drawing machine, and its specific electrical topology is as follows: Fig. 9As shown, each wire drawing machine has a set of wire drawing machine motor unit, slow-start unit, energy storage battery, conversion device and energy efficiency control unit (which can be installed in one box or in multiple boxes), with modular energy control function, among which M1~M2n correspond to the driving motors in the wire drawing machine, and the randomly allocated motors drive several wire drawing winding heads, wire arrangement reciprocating function, oiling and barrel changing transverse movement.

[0087] The energy control function method described in the above-mentioned embodiment 1 and embodiment 2 includes the energy storage capacity configuration of the wire drawing machine, energy efficiency and economic control, and safety protection.

[0088] Wire drawing machine energy storage capacity configuration method:

[0089] The power and capacity specifications of the energy storage battery are configured according to the following two conditions:

[0090] Condition 1 is the total motor power P of the wire drawing machine sum = =P 储能电池

[0091] And the total motor current I sum = =I 储能电池;

[0092] Where m is the number of cascaded motor units of the wire drawing machine or the number of wire drawing machines, n is the number of corresponding transformation control modules in each wire drawing machine, m and n are both integers greater than or equal to 1, j is any value from 1 to m, and i is any value from 1 to n;

[0093] Condition 2: The minimum voltage between D+ and D- at both ends of the wire drawing machine's conversion control module is U min The maximum value is U max The minimum voltage between B+ and B- of the energy storage battery is and the maximum value is , =U max + , =U min + ,in and is the tuning coefficient.

[0094] At the same time, an energy efficiency control unit is configured, which collects the status of the energy storage battery in real time, and controls the corresponding electrical components to complete the charging and discharging of the energy storage battery according to the status of the energy storage battery. It also supports accepting remote control commands and completes charging and discharging actions and protection management in combination with the status of the energy storage battery.

[0095] The energy efficiency control unit monitors and analyzes the working data of the energy storage battery. The voltage between the energy storage battery B+ and B- is UB The voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U D , when the energy efficiency control unit monitors the voltage range of the energy storage battery [U th1 , U th2 ] and the battery temperature range [T th1 , T th2 ], and at this time switch K1 or switch K2 is in the open state, the energy efficiency control unit controls switch K2 to close and synchronously controls the slow-start unit to work until U B =U D * (in is an integer less than 1), at this time, the switch K1 is closed to synchronously control the slow-start unit to stop working, and the power flow direction is as follows: Fig.10 shown.

[0096] Energy efficiency and economic control are carried out while safety protection is performed at the same time; when energy efficiency and economic control is performed, energy control performs charge and discharge control and arbitrage according to the operating characteristics of the energy storage battery based on the wire drawing machine; when safety protection is performed, it plays a role in protecting the energy storage battery, electrical circuits and personal safety.

[0097] Energy efficiency and economic control are carried out according to the following steps:

[0098] When the winding head, wire arrangement reciprocating function, oiling or barrel changing transverse movement corresponding to the motors M1~M2n in the wire drawing machine 1~m work, U B >U Dj (j is any value from 1 to m), the energy storage battery automatically discharges toward the motor, and the power flow direction is as follows: Fig.10 shown.

[0099] When the winding head, wire arrangement reciprocating function, oiling or barrel changing transverse operation corresponding to the motors M1-M2n in the wire drawing machines 1-m are braked and stopped, the braked motors are discharged to the outside, and the following situations exist:

[0100] B1) If the total power P discharged by the motor 发 >Total power P of the motor being run 耗 , leading to U B Dj (j is any value from 1 to m), then the motor charges the energy storage battery, and the power flows as follows: Fig.13 As shown;

[0101] B2) If the energy efficiency control unit detects a full-tank signal and the energy storage battery cannot be charged at this time, the energy efficiency control unit controls switch K3 to close and controls the conversion device to discharge to the AC bus for energy recovery and utilization until the full-tank signal disappears, and then controls switch K3 to open again to stop discharging to the AC bus; ​

[0102] The full bobbin signal here is the pressure signal output by the pressure sensor on the bobbin of the winding head. It is also possible to identify whether the bobbin is full according to the full bobbin rotation speed characteristics of the drawing machine motor. For example, Fig.11 As shown in the working curve, t1 is the motor acceleration and climbing time, t2 is the stable rotation speed operation time. When t > (t1 + t2), the winding head corresponding to the motor is full bobbin;

[0103] The energy efficiency control unit monitors the full bobbin signal and makes preparations for early charge and discharge according to Fig.11 the running time t;

[0104] 1) It is known that the time required for the drawing machine to be full bobbin is t3 = t1 + t2 and the power consumption is Q0;

[0105] 2) When the energy storage battery power is Q1 at the start of wire drawing of the drawing machine, it is estimated that the remaining power of the energy storage battery when the drawing machine is full bobbin is Q2 = Q1 - Q0;

[0106] 3) The external discharge amount of the drawing machine from full bobbin braking to shutdown is Q3, that is, Fig.11 the braking energy in;

[0107] 4) According to the running energy data set (Q0, Q3, t) of the drawing machine, switch K, where switch K is the time series length from the current position of the drawing machine operation; it is estimated that if the rechargeable amount Q4 of the energy storage battery is < Q3 after time t, the energy efficiency control unit controls the energy storage unit switch K3 to close during the peak time period before the full bobbin signal of the drawing machine occurs, and the discharge amount Q5 is Q4 - Q3, preparing the charging energy space for the energy storage battery and discharging for arbitrage at the same time; the discharge method is as Fig.12 shown.

[0108] B3) If the total power P of the motor external discharge 发 <the total power P of the motor consuming power during operation 耗 , if there exists U B <U Dj (j is any value from 1 to m), and it is not within the charging time period at this time, then control switch K1 to disconnect at this time to prevent charging the energy storage battery from the conversion control module; if there exists U B >U Dj (j is any value from 1 to m), then the energy storage battery automatically discharges towards the motor at this time.

[0109] C) When the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th or the lowest single - cell voltage of the energy storage battery is lower than the single - cell discharge threshold and it is within the charging time period at this time, the energy efficiency control unit controls switch K1 and switch K2 to disconnect, and at the same time controls switch K3 to close, controlling the conversion device to charge the energy storage battery until the total voltage of the energy storage battery exceeds the battery charging threshold U充th Or the highest cell voltage of the energy storage battery exceeds the cell charging threshold At this time, the energy efficiency control unit controls the conversion device to stop working and disconnects the switch K3, and simultaneously controls the monitoring and analysis of the energy storage battery working data according to the above energy efficiency control unit.

[0110] D) If it is in the discharge time period, and the amount of electricity consumed by the motor running during this time period < ,in, is a coefficient less than 1, is the remaining power of the battery; then the energy efficiency control unit controls the energy storage battery to discharge to the AC bus to supply power to other loads except the wire drawing machine, thereby realizing the arbitrage function.

[0111] Safety protection methods:

[0112] During the entire life cycle of the wire drawing machine, the safety protection method is as follows:

[0113] 1) During the operation of the wire drawing machine, the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold If the charging time period is not reached at this time, the energy efficiency control unit controls the switch K1 and the switch K2 to be disconnected, thereby protecting the energy storage battery until the charging time period is reached, and then the energy storage battery is charged according to the above D) control;

[0114] 2) During the operation of the wire drawing machine, the energy efficiency control unit monitors that the battery temperature of the energy storage battery exceeds the battery temperature range [T th1 , T th2 ], the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the energy storage battery until the temperature of the energy storage battery returns to a specified range, and then acts according to C) above;

[0115] 3) When the wire drawing machine is running, A1~Am arbitrarily exceeds the maximum current operation threshold I th , the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the electrical circuit until the main current of the wire drawing machine returns to normal, and then the energy efficiency control unit monitors and analyzes the working data of the energy storage battery;

[0116] 4) When any of the 1 to m wire drawing machines needs maintenance, the energy efficiency control unit controls switch K1 and switch K2 to disconnect, ensuring that the electrical circuit is out of power, thus protecting personal safety. After the maintenance is completed, the energy efficiency control unit monitors and analyzes the working data of the energy storage battery.

[0117] The present invention proposes a configuration of the energy storage capacity of the wire drawing machine according to the electrical characteristics of the wire drawing machine, performs energy efficiency and economic control and safety protection according to the electricity consumption characteristics of the wire drawing machine, ensures the economic charging and discharging logic under the premise of safety, ensures stable and reliable electricity consumption, green energy recovery and lowest electricity cost under normal production of the wire drawing machine, and promotes the rapid transformation of the wire drawing machine production towards new energy; energy recovery control logic and economic charging and discharging logic, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus, supplies power to other loads except the wire drawing machine, and realizes the arbitrage function.

[0118] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A wire drawing machine energy-saving power distribution control method, characterized in that: The following steps are involved: Step 1: Energy-saving design of wire drawing machine: Cascade energy-saving design of multiple wire drawing machine production lines, cascade of 1 to m wire drawing machine motor units, equipped with a set of slow-start unit, energy storage battery, conversion device and energy efficiency control unit; modular energy-saving design of wire drawing machine, each wire drawing machine is equipped with a set of wire drawing machine motor unit, slow-start unit, energy storage battery, conversion device and energy efficiency control unit; Step 2: Wire drawing machine energy storage capacity configuration: configure the power and capacity specifications of the energy storage battery; configure the energy efficiency control unit; Step 3: The energy efficiency control unit monitors and analyzes the working data of the energy storage battery. The voltage between the energy storage battery B+ and B- is U B The voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U D , when the energy efficiency control unit monitors the voltage range of the energy storage battery [U th1 , U th2 ] and the battery temperature range [T th1 , T th2 ], and at this time switch K1 or switch K2 is in the open state, the energy efficiency control unit controls switch K2 to close and synchronously controls the slow-start unit to work until U B =U D * ,in is an integer less than 1, at which time the closing switch K1 synchronously controls the slow-start unit to stop working; Step 4: When performing energy efficiency and economic control, the energy control performs charge and discharge control and arbitrage according to the energy storage battery based on the operating characteristics of the wire drawing machine; while performing safety protection, it plays a role in protecting the energy storage battery, electrical circuit and personal safety; The multiple cascade energy-saving design route of the wire drawing machine production line in step 1 includes several wire drawing machine mobile units, slow-start units, energy storage batteries, conversion devices and energy efficiency control units. The energy storage batteries and the conversion devices are connected by wires, and the AC busbar and the conversion device are connected by wires. The wire drawing machine mobile unit includes a conversion control module connected to the AC busbar wires and a conversion control module connected to the motor wires of the wire drawing machine. The conversion control modules are electrically connected, and the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device. The wires are respectively provided with There are switches K1 and K2, and a buffer unit is provided on the positive pole wire. The buffer unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wire of the wire drawing machine are all electrically connected to the energy efficiency control unit, and the switches K1 and K2 are all electrically connected to the energy efficiency control unit. The energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus. The connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-barrel signal transmission lines. A switch K3 is provided between the conversion device and the AC bus, and the switch K3 is electrically connected to the energy efficiency control unit; The modular energy-saving design route of the wire drawing machine in the step one includes a slow-start unit, an energy storage battery, a conversion device and an energy efficiency control unit, a conversion control module connected to the motor wires of the wire drawing machine, the conversion control modules are all connected to the wires between the AC bus, the energy storage battery and the conversion device are connected by wires, the AC bus and the conversion device are connected by wires, the wires between the conversion control modules are electrically connected to the wires between the energy storage battery and the conversion device, switches K1 and switch K2 are respectively provided on the wires, and a buffer unit is provided on the positive wires, the slow-start unit, the energy storage battery, the conversion device and the conversion control module connected to the motor wires of the wire drawing machine are all electrically connected to the energy efficiency control unit, and switches K1 and switch K2 are all electrically connected to the energy efficiency control unit, the energy efficiency control unit is electrically connected to the wires between the conversion device and the AC bus, the connecting wires between the energy efficiency control unit and the motor of the wire drawing machine are full-barrel signal transmission lines, a switch K3 is provided between the conversion device and the AC bus, and switch K3 is electrically connected to the energy efficiency control unit.

2. The energy-saving power distribution control method for a wire drawing machine according to claim 1, characterized in that: The power and capacity specifications of the energy storage battery in step 2 are configured according to conditions 1 and 2. Condition 1 is the total motor power P of the wire drawing machine. sum = =P 储能电池 And the total motor current I sum = =I 储能电池， Where m is the number of cascaded motor units of the wire drawing machine or the number of wire drawing machines, n is the number of corresponding conversion control modules in each wire drawing machine, m and n are both integers greater than or equal to 1, j is any value from 1 to m, and i is any value from 1 to n; condition 2 is that the minimum voltage between D+ and D- at both ends of the conversion control module of the wire drawing machine is U min The maximum value is U max The minimum voltage between B+ and B- of the energy storage battery is and the maximum value is , =U max + , =U min + ,in and is the tuning coefficient; In the second step, configure the energy efficiency control unit to collect the state of the energy storage battery in real time, control the corresponding electrical components to act according to the state of the energy storage battery to complete the charging and discharging of the energy storage battery, and also support receiving remote control commands to complete the charging and discharging actions and protection management in combination with the state of the energy storage battery.

3. A wire drawing machine energy-saving power distribution control method according to claim 2, characterized in that: The steps for energy efficiency economic control in the fourth step are as follows: 4.1, the energy storage battery automatically discharges in the direction of the motor: when the winding head, wire arrangement reciprocating function, oiling or barrel change transverse movement corresponding to the motor M1~M2n in the wire drawing machine 1~m work, U B >U Dj , j is any value from 1 to m, then the energy storage battery automatically discharges toward the motor; 4.

2. The motor that brakes and stops discharges externally: When the winding heads, reciprocating functions of the wire arranging, oiling, or barrel-changing cross movement corresponding to the motors M1 - M2n in the wire drawing machines 1 - m brake and stop, the motors that brake and stop discharge externally at this time. 4.3, the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold And at this time in the charging time period, that is, when the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold At this time, during the charging time period, the energy efficiency control unit controls switches K1 and K2 to be disconnected, and switches K3 to be closed, and controls the conversion device to charge the energy storage battery until the total voltage of the energy storage battery exceeds the battery charging threshold U 充th Or the highest cell voltage of the energy storage battery exceeds the cell charging threshold , then the energy efficiency control unit controls the conversion device to stop working and disconnects switch K3, and simultaneously controls according to step 3; 4.4, control the energy storage battery to discharge to the AC bus, if it is in the discharge time period, and the power consumed by the motor running during this time period < ,in, is a coefficient less than 1, If it is the remaining power of the battery, the energy efficiency control unit controls the energy storage battery to discharge to the AC bus to supply power to other loads except the wire drawing machine, thereby realizing the arbitrage function.

4. A wire drawing machine energy-saving power distribution control method according to claim 3, characterized in that: In the situation where the motor that brakes and stops discharges externally in step 4.2 above: 4.2.1 If P 发 >P 耗 , leading to U B Dj , that is, if the total power P discharged by the motor is 发 >Total power P of the motor being run 耗 , leading to U B Dj , j is any value from 1 to m, then the motor charges the energy storage battery;​​ 4.2.

2. The energy efficiency control unit detects a full barrel signal: If the energy efficiency control unit detects a full barrel signal and the energy storage battery cannot be charged at this time, the energy efficiency control unit controls the switch K3 to close, controls the conversion device to discharge to the AC bus for energy recovery and utilization until the full barrel signal disappears, and then controls the switch K3 to open again to stop discharging to the AC bus. 4.2.3 If P 发 <P 耗 , that is, if the total power P discharged by the motor is 发 <Total power P of the motor being run 耗 , 4.2.3A, if there is U B Dj , j is any value from 1 to m, and it is not in the charging time period, then the control switch K1 is disconnected to prevent the conversion control module from charging the energy storage battery; 4.2.3B, if there is U B >U Dj , j is any value from 1 to m, then the energy storage battery automatically discharges toward the motor.​ 5. A wire drawing machine energy-saving power distribution control method according to claim 4, characterized in that: The operation characteristics of the wire drawing machine for energy efficiency and economic control in step 4 include: a full barrel signal of the wire drawing machine and a full barrel motor braking signal; 1) a full barrel signal of the wire drawing machine: as a pre-braking signal of the wire drawing machine brake motor, to prepare for charging the energy storage battery; 2) a full barrel motor braking signal is a voltage U across the conversion control module of the wire drawing machine. D , at this time, the conditions for instantaneous determination of whether to charge.

6. A wire drawing machine energy-saving power distribution control method according to claim 5, characterized in that: In step three and step 4.1, the power flow of the energy-saving design circuit of the wire drawing machine is from the AC bus and the energy storage battery to the motors of the wire drawing machine; in step 4.2.1, the power flow of the energy-saving design circuit of the wire drawing machine is from the motors of the wire drawing machine to the AC bus and the energy storage battery.

7. A wire drawing machine energy-saving power distribution control method according to claim 6, characterized in that: In step 4.2.2, the full barrel signal is the pressure signal output by the pressure sensor on the winding head reel or identifies whether it is full according to the full barrel speed characteristic of the wire drawing machine motor. According to the operating curve of the wire drawing machine motor, where t1 is the motor acceleration and ramp-up time, t2 is the stable speed operation time, when t > (t1 + t2), the winding head corresponding to the motor is full.

8. A wire drawing machine energy-saving power distribution control method according to claim 7, characterized in that: In step 4.2.2, the energy efficiency control unit monitors the full barrel signal and the running time t of the wire drawing machine motor for early charge and discharge preparation. 1) It is known that the wire drawing machine needs time t3 = t1 + t2 to be full and the power consumption is Q0. 2) When the wire drawing machine starts drawing, the power of the energy storage battery is Q1, and it is expected that the remaining power of the energy storage battery when the wire drawing machine is full is Q2 = Q1 - Q0. 3) The external discharge amount of the wire drawing machine from full barrel braking to stopping is Q3, which is the braking energy. 4) According to the running energy data set (Q0, Q3, t) of this wire drawing machine, the switch K, where the switch K is the time series length from the current position of the wire drawing machine operation; it is expected that if the rechargeable amount Q4 of the energy storage battery is < Q3 after t time, the energy efficiency control unit controls the energy storage unit switch K3 to close during the peak time period before the full barrel signal of the wire drawing machine occurs to discharge to the power grid, and the discharge amount Q5 is Q4 - Q3, to prepare the charging energy space for the energy storage battery and at the same time conduct discharge arbitrage.

9. A wire drawing machine energy-saving power distribution control method according to claim 8, characterized in that: The steps for safety protection in the fourth step are as follows: 4A, the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold And at this time, it is not in the charging time period, that is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the total voltage of the energy storage battery is lower than the battery discharge threshold U 放th Or the lowest cell voltage of the energy storage battery is lower than the cell discharge threshold If the charging time period is not reached at this time, the energy efficiency control unit controls the switch K1 and the switch K2 to be disconnected, thereby protecting the energy storage battery until the charging time period is reached, and then the energy storage battery is charged according to step 6; 4B. The battery temperature of the energy storage battery exceeds the battery temperature range [T th1 , T th2 ], that is, during the operation of the wire drawing machine, the energy efficiency control unit monitors that the battery temperature of the energy storage battery exceeds the battery temperature range [T th1 , T th2 ], the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the energy storage battery until the battery temperature returns to a specified range, and then proceeds according to step 4.3; 4C, A1~Am arbitrarily exceeds the maximum current operation threshold I th , that is, during the operation of the wire drawing machine, A1~Am arbitrarily exceeds the maximum current operation threshold I th , the energy efficiency control unit controls switch K1 and switch K2 to disconnect, which protects the electrical circuit until the main current of the wire drawing machine returns to normal, and then acts according to step three; 4D. When any one of the 1 - M wire drawing machines needs to be repaired, the energy efficiency control unit controls the switches K1 and K2 to disconnect to ensure that there is no power in the electrical circuit, providing personal safety protection until after the repair is completed, and then operating according to step three.

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