Calculation power shunting method and device for power transformation automation time-sensitive network

By real-time detection of the temperature of the processing unit and diversion of computing power, the processor overload and delay problems in the time-sensitive network of substation automation are solved, and high-precision real-time computing allocation is achieved, and the system's real-time and processing capabilities are improved.

CN119127474APending Publication Date: 2024-12-13STATE GRID HUBEI ELECTRIC POWER RES INST
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411141279.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-20
Publication Date
2024-12-13

AI Technical Summary

Technical Problem

In traditional time-sensitive networks of substation automation, the increase in the computing volume of processors causes overload of individual processors, while most processors work unsaturated, and the existing shunt technology has a high delay, which cannot meet the application requirements of high real-time requirements.

Method used

By real-time detection of the temperature of the processing unit, the power consumption of the chip is judged and the computing power is diverted. The temperature detection unit and the central controller cooperate to allocate the computing power of the processing unit in real time to achieve high-precision computing power.

Benefits of technology

Real-time computing power shunt for the time-sensitive network of substation automation is realized, the processor overload problem is solved, and the system's real-time and processing capabilities are improved.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119127474A_ABST
    Figure CN119127474A_ABST
Patent Text Reader

Abstract

The invention discloses a computing power shunting method and device for a power transformation automation time-sensitive network, and the shunting device comprises more than two processing units, temperature detection units which are in one-to-one correspondence with the processing units, and a central controller. After being processed, the data are distributed to field power control equipment for power control; the temperature detection unit is used for accurately monitoring the working temperature of the corresponding processing unit; and the central controller judges whether the current processing unit is in operation saturation or not by receiving the current working temperature of the corresponding processing unit acquired by the temperature detection unit, and distributes the computing power of each processing unit according to the judgment result. The temperature of the processing unit of the power transformation automation time-sensitive network is detected in real time, and the power consumption of the chip is judged through the temperature of the processing unit, so that the computing power of the processing unit is shunted, the real-time performance is high, and the problem of high real-time requirement of the power transformation automation time-sensitive network is solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to a power control system, and is particularly used for power consumption determination and computing power distribution of a time-sensitive network processor. Background Art

[0002] In the substation automation control network, due to the rise and application of technologies such as the Internet of Things and artificial intelligence, the traditional substation automation control network has been upgraded to a time-sensitive network with functions such as remote collaboration, intelligent scheduling, remote fault location and fault handling. In this application scenario, the amount of computation of the processor of the time-sensitive network is further increased, but the application of the power system has a certain randomness, which leads to a situation where some processors are overloaded and most processors are not saturated in a certain period of time. The traditional diversion technology is based on tuple diversion. According to the current trend of network traffic growth, the processing capacity of the monitoring system unit is diverted. This method has a large delay and cannot meet the high real-time requirements of the substation automation time-sensitive network. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art, and thus provide a method for diverting computing power for a time-sensitive network for substation automation. The method detects the temperature of a processing unit of the time-sensitive network for substation automation in real time, and judges the power consumption of a chip by the temperature of the processing unit, thereby diverting the computing power of the processing unit. The present invention has strong real-time performance, and solves the problem of high real-time requirements of the time-sensitive network for substation automation.

[0004] The present invention also provides a computing power distribution device for implementing the above method.

[0005] A computing power distribution device for a time-sensitive network for substation automation, comprising:

[0006] Two or more processing units, the processing units are used to receive signals from the central controller and distribute them to various power control devices on site for power control after processing;

[0007] A temperature detection unit corresponding to each processing unit, the temperature detection unit being used to accurately monitor the operating temperature of the corresponding processing unit;

[0008] and a central controller, wherein the central controller determines whether the current processing unit is saturated by receiving the current operating temperature of the corresponding processing unit collected by the temperature detection unit, and allocates the computing power of each processing unit according to the judgment result.

[0009] The temperature detection unit includes a thermistor R whose resistance value can change with the temperature of the processing unit, a microcontroller and a voltage-stabilized power supply;

[0010] The regulated power supply is used to generate a reference voltage VREF1, and the voltage source AVDD is grounded after passing through the regulated power supply, the voltage divider resistor R1, and the thermistor R; the ADC input of the microcontroller is connected between the thermistor R and the voltage divider resistor R1, and the PWM output of the microcontroller transmits the collected temperature signal to the central controller after passing through the network chip.

[0011] The voltage-stabilized power supply includes a linear regulator and a digital potentiometer. The input terminal Uin of the linear regulator is connected to the power supply AVDD. The output terminal Uout of the linear regulator is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer via a resistor R9. The terminal B of the digital potentiometer is grounded. The SPI interface of the digital potentiometer is connected to the communication port of the controller.

[0012] The Adj terminal of the linear regulator is connected between the resistor R9 and the linear regulator.

[0013] The temperature detection unit includes a thermistor R whose resistance value can change with the temperature of the processing unit, a reference voltage source for generating a reference voltage VREF1, a microcontroller, an output current control unit, and a programmable voltage regulator for generating a reference voltage VREF2;

[0014] The output current control unit includes an operational amplifier and a transistor Q1, wherein the output terminal of the operational amplifier is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the power supply AVDD, and the emitter is grounded;

[0015] The power supply AVDD is grounded after passing through the reference voltage source, the voltage divider resistor R1 and the thermistor R, the ADC input terminal of the microcontroller is connected between the thermistor R and the voltage divider resistor R1, the DAC output terminal of the microcontroller is connected to the emitter of the transistor Q1 after passing through the program-controlled voltage regulator, resistor R2, resistor R3 and resistor R4, the negative input terminal of the operational amplifier is connected between the resistor R2 and the program-controlled voltage regulator, and the PWM output terminal of the microcontroller is connected to the positive input terminal of the operational amplifier.

[0016] The program-controlled voltage source includes a linear regulator, the linear regulator input terminal Uin is connected to the power supply AVDD, the linear regulator output terminal Uout is connected to the DAC output terminal of the microcontroller through resistors R6 and R5, and the linear regulator Adj terminal is connected between resistors R6 and R5.

[0017] The program-controlled voltage stabilizing source includes a linear regulator and a digital potentiometer. The input terminal Uin of the linear regulator is connected to the power supply AVDD. The output terminal Uout of the linear regulator is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer through the resistor R6. The B terminal of the digital potentiometer is connected to the DAC output terminal of the microcontroller. The Adj terminal of the linear regulator is connected between the resistor R6 and the digital potentiometer.

[0018] A filter circuit is connected between the PWM output terminal and the positive input terminal of the operational amplifier; the filter circuit is composed of two parallel RC filter circuits.

[0019] A computing power distribution method for a time-sensitive network for substation automation includes the following steps:

[0020] The temperature of each processing unit is collected in real time through each temperature detection unit, and the collected temperature data is sent to the central controller;

[0021] When the value does not exceed the normal value, the central controller controls the corresponding processing unit to continue processing and calculating;

[0022] When it is detected that a processing unit exceeds the normal value, the power consumption of the corresponding processing unit is very high and the computing power is saturated. The central controller looks for a processing unit with a lower temperature and performs computing diversion. The computing of the processing unit with a temperature exceeding the normal value is allocated to the processing unit with a lower temperature and more idle computing power. The processing unit with more idle computing power continues to complete the processing computing work.

[0023] The temperature detection unit provided by the present invention adopts a low-power operational amplifier as the core, cooperates with the internal ADC unit and PWM generation unit of the microcontroller, and loads the PWM signal corresponding to the sensor data to the positive input terminal of the operational amplifier, thereby realizing the control of the voltage of the resistor R4. By matching the values ​​of the resistors R3 and R2, the voltage of R4 is determined only by the reference voltage VREF2 and VD. VD carries the data information output by the sensor, so that the circuit output current is determined by VD, and the signal transmission is realized. In addition, during the operation of the linear regulator of the present invention, the voltage on R6 remains unchanged, and the voltage value is the voltage regulation value VT of the linear regulator. The DAC signal value output by the microcontroller input from the lower end of R5 can make the output voltage determined by Uctr, and realize the control of VREF2 by the microcontroller, so that VREF2 can be adjusted, so that the maximum value of the circuit output current can be flexibly adjusted, providing better adaptability for the application of the circuit structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the computing power distribution device of the present invention;

[0025] Figure 2 This is a flow chart of the computing power distribution method of the present invention;

[0026] Figure 3 is a circuit diagram of a temperature detection unit embodiment 1;

[0027] Figure 4 is a circuit diagram of a temperature detection unit embodiment 2;

[0028] Figure 5 Schematic diagram of implementing real-time detection for cyclic acquisition. DETAILED DESCRIPTION

[0029] The technical concept of the present invention is: in a time-sensitive network system, when the computing power of the processing chip increases, the power consumption of the corresponding chip will continue to increase, and the increase in the power consumption of the chip will increase the working temperature of the chip, that is, the temperature T of the chip is proportional to the computing power of the chip. The present invention sets a temperature detection unit for each of the processing chips of the time-sensitive network, and the working temperature of the processing chip of the time-sensitive network is monitored with high precision through each temperature detection unit. The data collected by the temperature detection unit is sent to the central controller. When the central controller detects that the temperature of a chip is very high, it proves that the power consumption of this chip is very high and its computing power is saturated, and the operations processed by it are allocated to chips with lower temperatures and more idle computing power.

[0030] The device of the present invention is as follows Figure 1 It consists of a processing unit, a central controller, and a temperature detection unit. The function of the processing unit is to calculate and process the data and then distribute it to the control device. The function of the central controller is to monitor the calculation amount of each processing unit and the current working temperature of the processing unit to determine whether the current processing unit is saturated.

[0031] The function of the temperature detection unit is to accurately monitor the operating temperature of the current processing unit.

[0032] The present invention designs a real-time temperature monitoring unit in which the thermistor output voltage is converted into a digital signal inside a microcontroller after AD conversion and is used to control the generation of a PWM wave. The PWM wave carries temperature data and can be converted into a current signal after being processed by a current control unit with an operational amplifier as the core. The natural advantage of the current signal in anti-interference will bring better reliability and stability to signal transmission.

[0033] A computing power distribution method for a time-sensitive network for substation automation includes the following steps:

[0034] The temperature of each processing unit is collected in real time through each temperature detection unit, and the collected temperature data is sent to the central controller;

[0035] When the value does not exceed the normal value, the central controller controls the corresponding processing unit to continue processing and calculating;

[0036] When it is detected that a processing unit exceeds the normal value, the power consumption of the corresponding processing unit is very high and the computing power is saturated. The central controller looks for a processing unit with a lower temperature and performs computing diversion. The computing of the processing unit with a temperature exceeding the normal value is allocated to the processing unit with a lower temperature and more idle computing power. The processing unit with more idle computing power continues to complete the processing computing work.

[0037] The method provided by the present invention can detect the power consumption of the processing unit of the automated time-sensitive network in real time and timely divert the operations that need to be processed.

[0038] like Figure 1 As shown, the processing units of several time-sensitive networks of the present invention are provided with temperature detection units one by one, and the working temperature of the processing units of the time-sensitive network is monitored with high precision through each temperature detection unit, and the data collected by the temperature detection unit is sent to the central controller. When the central controller detects that the temperature of a chip is very high, it proves that the power consumption of this chip is very high and its computing power is saturated, and the operations processed by it are allocated to the chips with lower temperature and more idle computing power.

[0039] like Figure 2 As shown, the temperature detection unit scans the temperature of the processing unit and sends the collected data to the central controller. When the temperature of the processing unit is low or normal, the processing unit continues to perform processing operations. When the central controller detects that the temperature of a processing unit is very high, it proves that the power consumption of this processing unit is very high and its computing power is saturated. It looks for processing units with lower temperatures and performs computing diversion, and distributes the processing operations to processing units with lower temperatures and more idle computing power, and the processing units with more idle computing power continue to complete the processing operations.

[0040] The key to system design lies in the implementation of a high-precision temperature detection unit. The implementation method of the high-precision temperature detection unit is described in detail below.

[0041] Example 1

[0042] Figure 3 It is an application circuit structure of a high-precision temperature monitoring unit. The temperature monitoring unit includes a linear regulator, a digital potentiometer, and a microcontroller 4; the voltage-stabilized power supply includes a linear regulator and a digital potentiometer. The input terminal Uin of the linear regulator is connected to the power supply AVDD. The output terminal Uout of the linear regulator is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer through a resistor R9. The B terminal of the digital potentiometer is grounded. The SPI interface of the digital potentiometer is connected to the communication port of the controller. The Adj terminal of the linear regulator is connected between the resistor R9 and the linear regulator. The voltage-stabilized power supply is used to generate a reference voltage VREF1. The power supply AVDD is grounded after passing through the voltage-stabilized power supply, the voltage-dividing resistor R1, and the thermistor R; the ADC input terminal of the microcontroller 4 is connected between the thermistor R and the voltage-dividing resistor R1. The PWM output terminal of the microcontroller 4 transmits the collected temperature signal to the central controller after passing through the network chip.

[0043] The output voltage of the thermistor R is converted into a digital signal inside the microcontroller after AD conversion and is used to control the generation of PWM wave, which carries temperature data.

[0044] The thermistor R and the resistor R1 form a voltage divider configuration, and the connection node of the thermistor R and the resistor R1 is connected to the ADC analog input terminal of the ADC unit in the microcontroller. Therefore, there is a data relationship between the digital signal data output by the ADC unit in the microcontroller and the resistance value of the thermistor R. The specific relationship can be expressed as:

[0045]

[0046] D1=2 N (V1 / VREF1)

[0047] R=R1(2 N / D1-1)

[0048] Where V1 is the voltage at the connection node between thermistor R and resistor R1, N is the number of quantization bits of the ADC unit, and D1 is the digital output signal of the ADC unit;

[0049] After the microcontroller processes the ADC output, it can transmit its data wirelessly. Of course, this requires the help of a network chip. For example, the common DM9000AE chip is a 48-pin 10 / 100M network chip that supports TCP / IP hardware acceleration, which can effectively reduce the burden on the CPU. It has a built-in 16KB SDRAM for transceiver cache, supports wake-up frames, simplex or full-duplex working modes and IEEE802.3 Ethernet transmission protocol.

[0050] In order to achieve high measurement accuracy temperature detection, there is a high requirement for the stability of the reference voltage VREF1. The reference voltage VREF1 is realized by the present invention using a digital potentiometer and a linear regulator. The digital potentiometer has a certain number of sliding end positions. Common digital potentiometers generally have more than 1024 sliding end positions, so it has a large resolution and can provide accurate resistance values. In the present invention, the fixed end A and the sliding end W of the digital potentiometer are fixedly connected to form an adjustable resistor. The adjustable resistor replaces the output voltage external adjustment resistor of the three-terminal voltage stabilizing circuit, so that the microcontroller can realize accurate control of the adjustable resistance value of the digital potentiometer through the SPI interface, and provide a high-precision adjustable reference voltage VREF1.

[0051] Example 2

[0052] Figure 4Another application circuit structure of a high-precision temperature detection unit is disclosed. The temperature monitoring unit includes an output current control unit 1, a programmable voltage-stabilizing power supply 2, a filter circuit 3, a microcontroller 4, and a reference voltage source 5. The output current control unit 1 includes an operational amplifier and a transistor Q1. The output terminal of the operational amplifier is connected to the base of the transistor Q1. The collector of the transistor Q1 is connected to the power supply AVDD, and the emitter is grounded. The power supply AVDD is grounded after passing through the reference voltage source 1, the voltage-dividing resistor R1, and the thermistor R. The ADC input terminal of the microcontroller 4 is connected between the thermistor R and the voltage-dividing resistor R1. The DAC output terminal of the microcontroller 4 is connected to the emitter of the transistor Q1 after passing through the programmable voltage-stabilizing power supply 2, the resistor R2, the resistor R3, and the resistor R4. The negative input terminal of the operational amplifier is connected between the resistor R2 and the programmable voltage-stabilizing power supply 2. The PWM output terminal of the microcontroller 4 is connected to the positive input terminal of the operational amplifier through the filter circuit 3. The filter circuit 3 is composed of two parallel RC filter circuits. The program-controlled voltage regulator 2 includes a linear regulator, the input terminal Uin of the linear regulator is connected to the power supply AVDD, the output terminal Uout of the linear regulator is connected to the DAC output terminal of the microcontroller 4 through the resistor R6 and the resistor R5, and the Adj terminal of the linear regulator is connected between the resistor R6 and the resistor R5. Using a low-power operational amplifier as the core, in conjunction with the ADC unit and the PWM generation unit inside the microcontroller, the PWM signal corresponding to the sensor data is loaded to the positive input terminal of the operational amplifier, thereby realizing the control of the resistor R4 voltage. By matching the values ​​of the resistors R3 and R2, the R4 voltage is only determined by the reference voltage VREF2 and VD. VD carries the data information output by the sensor, so that the circuit output current is determined by VD, and signal transmission is realized.

[0053] The operational amplifier, resistor R5, and transistor Q1 form a negative feedback loop of the operational amplifier. The microcontroller outputs a PWM wave and inputs it into the positive input terminal of the operational amplifier. The voltage at the negative input terminal of the operational amplifier is taken from the voltage division of resistors R2 and R3. Resistor R3 is connected to the output signal ground. Resistor R3 is also connected to the digital ground pin of the microcontroller through resistor R4. The above specially set circuit structure will bring the following constraints:

[0054] Since there is almost no current flowing into the input of the operational amplifier, all the current flows out from VREF2 and finally flows into the digital ground through resistors R2, R3 and R4; if the resistance values ​​of resistors R2 and R3 are set much larger than the resistance value of resistor R4, the following expression will be obtained:

[0055]

[0056] If R2=R3, then

[0057] V4=VREF2-2VD

[0058] Furthermore, the present invention uses a microcontroller to convert the D1 (digital output signal of the ADC unit) data corresponding to the temperature into a current signal, and uses the current signal for transmission to realize line communication between the control system and the actuator, which is conducive to reducing interference (current signal transmission is naturally better than voltage signal in terms of anti-interference). The specific implementation means of the present invention is to use the D1 data to control the generation of PWM waves inside the microcontroller, use the PWM wave to control the voltage VD at the positive input terminal of the op amp, and then control the voltage V4 on R4 = VREF2-2VD.

[0059] When the PWM output of the microcontroller is processed by the filter circuit so that VD is at a low level, V4 will obtain the maximum voltage value within its value range, so that the output current of the entire circuit will obtain the maximum value. When the PWM output of the microcontroller is processed by the filter circuit so that VD is VREF2 / 2, the output current of the entire circuit is 0.

[0060] VREF2 is realized by a linear regulator. The specific circuit structure is as follows: Figure 4 As shown in Figure 1, the output voltage of the microcontroller's internal DAC module is applied to the input of the linear regulator.

[0061] During the operation of the linear regulator, the voltage on R6 remains unchanged. This voltage value is the voltage regulation value VT of the linear regulator. The DAC signal value output by the microcontroller input from the lower end of R5 can limit the output voltage to the following expression:

[0062]

[0063] Among them I Q is the current flowing out of the Adj terminal of the linear regulator, Uout is the voltage output by the programmable voltage-regulated power supply 2, which is equal to VREF2, and Uctr is the voltage output by the DAC output terminal of the microcontroller.

[0064] During the operation of the linear regulator in the program-controlled voltage-stabilized power supply 2 of the present invention, the voltage on R6 remains unchanged. This voltage value is the voltage-stabilized value VT of the linear regulator. The DAC signal value output by the microcontroller input from the lower end of R5 can make the output voltage determined by Uctr, so that VREF2 can be controlled by the microcontroller, thereby adjusting VREF2, thereby realizing the ability to flexibly adjust the maximum value of the circuit output current, and providing better adaptability for the circuit structure application. The hardware circuit structure of the above temperature detection circuit ensures the accuracy of temperature detection.

[0065] Further, the structure of the programmable voltage-stabilized power supply 2 in Example 2 may also be as follows: the programmable voltage-stabilized power supply 2 includes a linear regulator and a digital potentiometer, the linear regulator input terminal Uin is connected to the power supply AVDD, the linear regulator output terminal Uout is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer after passing through the resistor R6, the B terminal of the digital potentiometer is connected to the DAC output terminal of the microcontroller 4, and the Adj terminal of the linear regulator is connected between the resistor R6 and the digital potentiometer.

[0066] At the system software level, such as Figure 5 In order to improve the real-time performance of temperature detection, the present application performs cyclic sampling of temperature data, implements sampling control by setting the internal control register of the microcontroller of the temperature detection unit, stores the sampling results in the internal register of the microcontroller of the temperature detection unit, and then restarts data collection by setting the internal control register of the microcontroller, and repeats the cycle to achieve real-time collection. Ultimately, the real-time, high-precision temperature data obtained by each temperature detection unit provides a reliable basis for the central controller to accurately predict the overload of each processor and implement the diversion algorithm.

Claims

1. A computing power distribution device for substation automation time-sensitive network, Features: include: Two or more processing units, the processing units are used to receive signals from the central controller and distribute them to various power control devices on site for power control after processing; A temperature detection unit corresponding to each processing unit, the temperature detection unit being used to accurately monitor the operating temperature of the corresponding processing unit; and a central controller, wherein the central controller determines whether the current processing unit is saturated by receiving the current operating temperature of the corresponding processing unit collected by the temperature detection unit, and allocates the computing power of each processing unit according to the judgment result.

2. The computing power distribution device for a time-sensitive network for substation automation according to claim 1, Features: The temperature detection unit comprises a thermistor R whose resistance value can change with the temperature of the processing unit, a microcontroller (4) and a voltage-stabilized power supply; The voltage-stabilized power supply is used to generate a reference voltage VREF1, and the voltage source AVDD is grounded after passing through the voltage-stabilized power supply, the voltage-dividing resistor R1, and the thermistor R; the ADC input end of the microcontroller (4) is connected between the thermistor R and the voltage-dividing resistor R1, and the PWM output end of the microcontroller (4) transmits the collected temperature signal to the central controller after passing through the network chip.

3. The computing power distribution device for a time-sensitive network for substation automation according to claim 2, Features: The voltage-stabilized power supply includes a linear regulator and a digital potentiometer. The input terminal Uin of the linear regulator is connected to the power supply AVDD. The output terminal Uout of the linear regulator is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer via a resistor R9. The terminal B of the digital potentiometer is grounded. The SPI interface of the digital potentiometer is connected to the communication port of the controller.

4. The computing power distribution device for a time-sensitive network for substation automation according to claim 3, Features: The Adj terminal of the linear regulator is connected between the resistor R9 and the linear regulator.

5. The computing power distribution device for a time-sensitive network for substation automation according to claim 1, Features: The temperature detection unit comprises a thermistor R whose resistance value can change with the temperature of the processing unit, a reference voltage source (1) for generating a reference voltage VREF1, a microcontroller (4), an output current control unit (1) and a programmable voltage regulator (2) for generating a reference voltage VREF2; The output current control unit (1) comprises an operational amplifier and a transistor Q1, wherein the output terminal of the operational amplifier is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the power supply AVDD, and the emitter is grounded; The power supply AVDD is grounded after passing through a reference voltage source (1), a voltage divider resistor R1 and a thermistor R; the ADC input terminal of the microcontroller (4) is connected between the thermistor R and the voltage divider resistor R1; the DAC output terminal of the microcontroller 4 is connected to the emitter of the transistor Q1 after passing through a programmable voltage regulator source (2), resistors R2, R3 and R4; the negative input terminal of the operational amplifier is connected between the resistor R2 and the programmable voltage regulator source (2); and the PWM output terminal of the microcontroller (4) is connected to the positive input terminal of the operational amplifier.

6. The computing power distribution device for a time-sensitive network for substation automation according to claim 5, Features: The program-controlled voltage-stabilizing source (2) comprises a linear regulator, wherein an input terminal Uin of the linear regulator is connected to a power supply AVDD, an output terminal Uout of the linear regulator is connected to a DAC output terminal of a microcontroller (4) via resistors R6 and R5, and an Adj terminal of the linear regulator is connected between the resistors R6 and R5.

7. The computing power distribution device for a time-sensitive network for substation automation according to claim 5, Features: The programmable voltage stabilizing source (2) comprises a linear regulator and a digital potentiometer, wherein the input terminal Uin of the linear regulator is connected to the power supply AVDD, the output terminal Uout of the linear regulator is fixedly connected to the fixed terminal A and the sliding terminal W of the digital potentiometer via a resistor R6, the B terminal of the digital potentiometer is connected to the DAC output terminal of the microcontroller (4), and the Adj terminal of the linear regulator is connected between the resistor R6 and the digital potentiometer.

8. The computing power distribution device for a substation automation time-sensitive network according to claim 5, 6 or 7, Features: A filter circuit (3) is connected between the PWM output terminal and the positive input terminal of the operational amplifier; the filter circuit (3) is composed of two parallel RC filter circuits.

9. A computing power distribution method for substation automation time-sensitive network, Features: The following steps are involved: The temperature of each processing unit is collected in real time through each temperature detection unit, and the collected temperature data is sent to the central controller; When the value does not exceed the normal value, the central controller controls the corresponding processing unit to continue processing and calculating; When it is detected that a processing unit exceeds the normal value, the power consumption of the corresponding processing unit is very high and the computing power is saturated. The central controller looks for a processing unit with a lower temperature and performs computing diversion. The computing of the processing unit with a temperature exceeding the normal value is allocated to the processing unit with a lower temperature and more idle computing power. The processing unit with more idle computing power continues to complete the processing computing work.