Power equipment protection control system
By introducing temperature detection, delay, and reset modules into power equipment, the problem of damage caused by immediate reset after the circuit returns to normal is solved, achieving stable reset and extended lifespan of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- STATE POWER INVESTMENT GRP CHENGDE NEW ENERGY POWER GENERATION CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-17
AI Technical Summary
When existing power equipment is reset immediately after the circuit is restored to normal, the internal structure of the equipment is not completely stable, which leads to equipment damage and shortened service life.
It employs a temperature detection module, a delay module, a reset module, a high-temperature protection module, and an overcurrent protection module. By detecting the temperature and current of the power equipment, it achieves a delayed reset function, preventing the equipment from resetting immediately before it has stabilized.
By using the delayed reset function, the internal state of the device is stabilized before resetting, thus avoiding damage to the device, extending its lifespan, and improving its reliability.
Smart Images
Figure CN224138719U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of circuit protection technology, and in particular to a power equipment protection and control system. Background Technology
[0002] In modern power systems, the stable operation of power equipment is crucial to ensuring the reliability and security of power supply.
[0003] Existing protection circuits typically reset immediately after the circuit returns to normal. However, even if parameters such as current and voltage in the circuit may return to normal within a short period of time, the electromagnetic state and mechanical components inside the equipment may not have fully stabilized.
[0004] If a reset is performed immediately and the power is restored, the device will be subjected to additional stress when power is restored, accelerating the aging of the equipment and affecting its lifespan and reliability. Utility Model Content
[0005] This disclosure provides a power equipment protection and control system to solve the problem of power equipment damage caused by immediate reset after the circuit returns to normal.
[0006] This disclosure provides a power equipment protection and control system, including:
[0007] Temperature detection module, high temperature protection module, delay module, reset module, and overcurrent protection module;
[0008] The temperature detection module is used to detect the temperature of the power equipment;
[0009] The output terminal of the temperature detection module is connected to the input terminal of the delay module and the first terminal of the reset module, respectively.
[0010] The control terminal of the reset module is connected to the output terminal of the delay module, and the second terminal of the reset module is connected to the control terminal of the high temperature protection module.
[0011] The two ends of the high-temperature protection module are used to connect in parallel with the two ends of the power equipment;
[0012] The input terminal of the overcurrent protection module is connected in parallel with the power equipment, and the output terminal of the overcurrent protection module is used to disconnect the power supply circuit of the power equipment.
[0013] In one exemplary embodiment of this disclosure, the temperature detection module includes: a resistor R1, a thermistor RT1, and an operational amplifier U2;
[0014] The first end of resistor R1 is connected to the power supply VDD, and the second end of resistor R1 is grounded through the thermistor RT1.
[0015] The first terminal of the thermistor RT1 is connected to the non-inverting input terminal of the operational amplifier U2, and the inverting input terminal of the operational amplifier U2 is connected to the temperature reference voltage Vref1.
[0016] The output of operational amplifier U2 is connected to the input of the delay module and the first terminal of the reset module, respectively.
[0017] In one exemplary embodiment of this disclosure, the high-temperature protection module includes: a high-temperature indicator unit and a high-temperature protection unit;
[0018] The input terminal of the high temperature indicator unit is used to connect to the power supply terminal of the electrical equipment, and the output terminal of the high temperature indicator unit is grounded.
[0019] The two ends of the high-temperature protection unit are used to connect in parallel with the power equipment, and the control end of the high-temperature protection unit is connected to the second end of the reset module.
[0020] In one exemplary embodiment of this disclosure, the high temperature indicator unit includes: a first indicator light L1, a second indicator light L2, and a transistor Q6;
[0021] The first end of the first indicator light L1 is connected to the power supply VCC, and the second end of the first indicator light L1 is connected to the power supply terminal of the power equipment.
[0022] The base of transistor Q6 is connected to the second terminal of the first indicator light L1, the collector of transistor Q6 is connected to ground through the second indicator light L2, and the emitter of transistor Q6 is connected to the power supply VDD.
[0023] In one exemplary embodiment of this disclosure, the high-temperature protection module includes: transistor Q1, resistor R2, and transistor Q2;
[0024] The base of transistor Q1 is connected to the second terminal of the reset module; the collector of transistor Q1 is connected to the power supply VDD; and the emitter of transistor Q1 is grounded.
[0025] The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R2; the collector of transistor Q2 is connected to power supply VCC, and the emitter of transistor Q2 is grounded.
[0026] In one exemplary embodiment of this disclosure, the delay module includes: capacitor C1, resistor R6, delay chip U1, capacitor C2, diode D1, and transistor Q5;
[0027] The reset and power supply terminals of delay chip U1 are both connected to the output terminal of the temperature detection module.
[0028] The output of the temperature detection module is connected to the trigger terminal and the threshold terminal of the delay chip U1 through capacitor C1;
[0029] The threshold terminals of the delay chip U1 are connected to the cathode of diode D1 and the first terminal of resistor R6, respectively.
[0030] The anode of diode D1, the second terminal of resistor R6, and the ground terminal of delay chip U1 are grounded;
[0031] The control voltage terminal of the delay chip U1 is grounded through capacitor C2;
[0032] The base of transistor Q5 is connected to the output of delay chip U1, the collector of transistor Q5 is grounded, and the emitter of transistor Q5 is connected to the first input of the reset module.
[0033] In one exemplary embodiment of this disclosure, the reset module includes: a relay K1;
[0034] The common terminal of relay K1 is the first terminal of the reset module; the first input terminal of relay K1 is connected to the output terminal of the delay module, and the second input terminal of relay K1 is grounded.
[0035] The first output terminal of the relay K1 is the second terminal of the reset module.
[0036] In one exemplary embodiment of this disclosure, the overcurrent protection module includes: a sliding resistor RP1, a resistor R3, a resistor R5, an operational amplifier U3, and a MOSFET Q3;
[0037] The first end and the sliding end of the sliding resistor RP1 are both connected to the power supply terminal of the power equipment, and the second end of the sliding resistor RP1 is connected to the non-inverting input terminal of the operational amplifier U3.
[0038] The inverting input terminal of op-amp U3 is connected to the current reference voltage Vref2; the output terminal of op-amp U3 is connected to the gate of MOSFET Q3.
[0039] The grounding terminal of the power equipment is connected to the non-inverting input terminal of the operational amplifier U3 through resistor R3;
[0040] The drain of MOSFET Q3 is connected to the ground terminal of the power equipment, and the source of MOSFET Q3 is grounded through resistor R5.
[0041] The beneficial effects of the power equipment protection and control system provided in this disclosure are as follows:
[0042] This disclosure utilizes a high-temperature protection module and an overcurrent protection module to detect the temperature and current of electrical equipment, thereby protecting the equipment. Furthermore, this disclosure employs a delay module and a reset module to implement a delay function after the electrical equipment temperature returns to normal, ensuring that the reset operation is performed only after the internal state of the equipment has stabilized, thus avoiding damage to the electrical equipment caused by immediate reset. Attached Figure Description
[0043] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0044] Figure 1 This is a schematic diagram of the structure of the first power equipment protection and control system provided in the embodiments of this disclosure;
[0045] Figure 2 This is a schematic diagram of the structure of the second power equipment protection and control system provided in the embodiments of this disclosure;
[0046] Figure 3 This is a schematic diagram of the structure of the third power equipment protection and control system provided in the embodiments of this disclosure. Detailed Implementation
[0047] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.
[0048] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.
[0049] The implementation of this disclosure will be described in detail below with reference to the specific accompanying drawings:
[0050] Figure 1 A schematic diagram of the structure of a first power equipment protection and control system provided in this embodiment of the disclosure. (Refer to...) Figure 1 The power equipment protection and control system includes: a temperature detection module 10, a high temperature protection module 11, a time delay module 12, a reset module 13, and an overcurrent protection module 14;
[0051] Temperature detection module 10 is used to detect the temperature of electrical equipment;
[0052] The output terminal of the temperature detection module 10 is connected to the input terminal of the delay module 12 and the first terminal of the reset module 13, respectively.
[0053] The control terminal of the reset module 13 is connected to the output terminal of the delay module 12, and the second terminal of the reset module 13 is connected to the control terminal of the high temperature protection module 11.
[0054] The two ends of the high-temperature protection module 11 are used to connect in parallel with the two ends of the power equipment;
[0055] The input terminal of the overcurrent protection module 14 is connected in parallel with the power equipment, and the output terminal of the overcurrent protection module 14 is used to disconnect the power supply circuit of the power equipment.
[0056] In this embodiment, the temperature detection module 10 can detect the temperature of the electrical equipment, which can be achieved through a thermistor or a thermistor sensor, and should be installed around the electrical equipment. The electrical equipment can also be a transformer, an electrical appliance, etc., and the detected temperature can be the temperature of the electrical equipment itself, or the oil temperature of the transformer, etc.
[0057] When the temperature detection module 10 detects that the temperature of the power equipment is higher than the preset temperature, the high temperature protection module 11 is activated. At this time, the high temperature protection module 11 short-circuits the power equipment, and no current flows through the power equipment, so the power equipment stops working and achieves the purpose of protection.
[0058] After a period of time, when the temperature detection module 10 detects that the temperature of the power equipment has returned to normal, the temperature detection module 10 sends a control signal to the delay module 12. After the preset delay time, the delay module 12 controls the reset module 13 to reset. At this time, the circuit is restored, the power equipment is powered on, the power equipment is connected to the circuit again, and normal operation begins.
[0059] The overcurrent protection module 14 can detect the current passing through the electrical equipment. When a short circuit occurs in the electrical equipment, the overcurrent protection module 14 can directly disconnect the circuit. It should be noted that the high temperature protection module 11 in this disclosure protects the electrical equipment by short-circuiting, while the overcurrent protection module 14 protects the electrical equipment by breaking the circuit.
[0060] As can be seen from the above, this disclosure uses the high-temperature protection module 11 and the overcurrent protection module 14 to detect the temperature and current of the power equipment, thereby achieving the protection of the power equipment. This disclosure uses the delay module 12 and the reset module 13 to implement a delay function after the temperature of the power equipment returns to normal, ensuring that the reset operation is performed under the premise of stable internal state of the equipment, thus avoiding damage to the power equipment caused by immediate reset.
[0061] Figure 2 This is a schematic diagram of the structure of a second power equipment protection and control system provided in the embodiments of this disclosure. Figure 3 This is a schematic diagram of the structure of a third type of power equipment protection and control system provided in this disclosure. (Reference) Figure 2 and Figure 3.
[0062] In one embodiment of this disclosure, the temperature detection module 10 includes: a resistor R1, a thermistor RT1, and an operational amplifier U2;
[0063] The first end of resistor R1 is connected to the power supply VDD, and the second end of resistor R1 is grounded through the thermistor RT1.
[0064] The first terminal of the thermistor RT1 is connected to the non-inverting input terminal of the operational amplifier U2, and the inverting input terminal of the operational amplifier U2 is connected to the temperature reference voltage Vref1.
[0065] The output terminal of operational amplifier U2 is connected to the input terminal of delay module 12 and the first terminal of reset module 13, respectively.
[0066] In this embodiment, the thermistor RT1 is a negative temperature coefficient thermistor. When the thermistor RT1 detects that the temperature of the power equipment is normal, the resistance of the thermistor RT1 is relatively high, the voltage drop across the thermistor RT1 is relatively high, and when the voltage at the non-inverting input of the operational amplifier U2 is higher than the temperature reference voltage Vref1, the output of the operational amplifier U2 outputs a high level.
[0067] When the thermistor RT1 detects an increase in the temperature of the power equipment, the resistance of the thermistor RT1 decreases, and the voltage drop decreases. When the voltage drops below the temperature reference voltage Vref1, the output of the operational amplifier U2 outputs a low level. The signal output by the operational amplifier U2 is used to control whether the high temperature protection module 11 operates and whether the delay module 12 performs a delay operation.
[0068] In one embodiment of this disclosure, the reset module 13 includes: a relay K1;
[0069] The common terminal of the relay K1 is the first terminal of the reset module 13; the first input terminal of the relay K1 is connected to the output terminal of the delay module 12, and the second input terminal of the relay K1 is grounded.
[0070] The first output terminal of the relay K1 is the second terminal of the reset module 13.
[0071] The high-temperature protection module 11 includes: a high-temperature indicator unit 111 and a high-temperature protection unit 112;
[0072] The input terminal of the high temperature indicator unit 111 is used to connect to the power supply terminal of the electrical equipment, and the output terminal of the high temperature indicator unit 111 is grounded.
[0073] The two ends of the high temperature protection unit 112 are used to connect in parallel with the power equipment, and the control end of the high temperature protection unit is connected to the second end of the reset module.
[0074] The high temperature indicator unit 111 includes: a first indicator light L1, a second indicator light L2, and a transistor Q6;
[0075] The first end of the first indicator light L1 is connected to the power supply VCC, and the second end of the first indicator light L1 is connected to the power supply terminal of the power equipment.
[0076] The base of transistor Q6 is connected to the second terminal of the first indicator light L1, the collector of transistor Q6 is connected to ground through the second indicator light L2, and the emitter of transistor Q6 is connected to the power supply VDD.
[0077] The high-temperature protection module 11 includes: transistor Q1, resistor R2 and transistor Q2;
[0078] The base of transistor Q1 is connected to the second terminal of reset module 13; the collector of transistor Q1 is connected to power supply VDD; and the emitter of transistor Q1 is grounded.
[0079] The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R2; the collector of transistor Q2 is connected to power supply VCC, and the emitter of transistor Q2 is grounded.
[0080] In this embodiment, both transistors Q1 and Q2 are NPN transistors. When the temperature detected by the temperature detection module 10 is within the normal range, i.e. lower than the preset temperature reference voltage Vref1, the temperature detection module 10 outputs a high level. When the base of transistor Q1 is at a high level, transistor Q1 is turned on. The base of transistor Q2 is grounded, and transistor Q2 is turned off. The power equipment works normally, and the first indicator light L1 illuminates. Transistor Q6 is a PNP transistor. When the base of transistor Q6 is at a high level, transistor Q6 is turned off, and the second indicator light L2 does not illuminate.
[0081] When the temperature detected by the temperature detection module 10 is higher than the preset temperature reference voltage Vref1, the temperature detection module 10 outputs a low level, the base of transistor Q1 is at a low level, and transistor Q1 is cut off. The base of transistor Q2 is connected to the power supply through resistor R2, and at this time the base of transistor Q2 is at a high level, and transistor Q2 is turned on, short-circuiting the power equipment. At the same time, since transistor Q2 is turned on, the base of transistor Q6 is grounded, and transistor Q6 is turned on. At this time, the power supply VDD supplies power to the second indicator light L2, and the second indicator light L2 lights up.
[0082] When the temperature detected by the temperature detection module 10 is higher than the preset temperature reference voltage Vref1, in addition to the aforementioned high-temperature protection and indication functions, the delay module 12, upon receiving the low-level signal from the temperature detection module 10, outputs a high-level signal. At this time, since transistor Q5 is an NPN transistor, transistor Q5 conducts, the coil of relay K1 is energized, relay K1 is energized, and the connection between the temperature detection module 10 and the high-temperature protection module 11 is disconnected. The first indicator light L1 is the working indicator light, and the second indicator light L2 is the high-temperature indicator light. When the second indicator light L2 is lit, it indicates that the temperature of the power equipment is too high and the high-temperature protection action has been activated. It should be noted that although there is a certain delay in the output of the delay module 12, the delay time of the delay module 12 is short compared to the temperature drop time, so it does not hinder the subsequent delay reset function, and triggering the high-temperature protection action will not cause a delay in the protection action due to the delay of the delay module 12.
[0083] After a period of time, the temperature of the power equipment gradually decreases until it returns to the normal range. At this time, the output level of the temperature detection module 10 flips from low level to high level. After a delay, the output of the delay module 12 flips from high level to low level. At this time, the base of transistor Q5 becomes low level, transistor Q5 is cut off, relay K1 is de-energized, relay K1 switches closed, and the initial state is restored to continue the temperature detection of the power equipment.
[0084] As can be seen from the above, this disclosure utilizes a voltage divider circuit formed by a negative temperature coefficient thermistor RT1 and resistor R1 in the temperature detection module 10, combined with the comparison function of operational amplifier U2, to monitor the temperature of the power equipment. The high-temperature protection module 11 achieves high-temperature protection for the power equipment through the switching action of transistors Q1 and Q2. Simultaneously, the high-temperature indicator unit 111 provides a direct indication of the high-temperature status through the circuit of transistor Q6 and the second indicator light L2. When the temperature is too high, the second indicator light L2 illuminates to alert the operator. This disclosure uses a delay module 12 to maintain the original level during the delay period without flipping, avoiding the problems of accelerated equipment aging and reduced reliability caused by immediate reset.
[0085] In one embodiment of this disclosure, the delay module 12 includes: capacitor C1, resistor R6, delay chip U1, capacitor C2, diode D1, and transistor Q5;
[0086] The reset and power supply terminals of the delay chip U1 are both connected to the output terminal of the temperature detection module 10.
[0087] The output of the temperature detection module 10 is connected to the trigger terminal and the threshold terminal of the delay chip U1 through capacitor C1;
[0088] The threshold terminals of the delay chip U1 are connected to the cathode of diode D1 and the first terminal of resistor R6, respectively.
[0089] The anode of diode D1, the second terminal of resistor R6, and the ground terminal of delay chip U1 are grounded;
[0090] The control voltage terminal of the delay chip U1 is grounded through capacitor C2;
[0091] The base of transistor Q5 is connected to the output terminal of delay chip U1, the collector of transistor Q5 is grounded, and the emitter of transistor Q5 is connected to the first input terminal of reset module 13.
[0092] In this embodiment, the delay chip U1 can be a 555. When the output voltage of the output terminal detected by the temperature detection module 10 flips from low level to high level, since the voltage of capacitor C1 cannot change abruptly, the voltage of the trigger terminal of the delay chip U1 cannot immediately reach the flip voltage. At this time, the output terminal of the delay chip U1 still outputs a high-level signal, that is, the circuit has not yet been reset.
[0093] As capacitor C1 charges, when the voltage at the trigger terminal of delay chip U1 reaches the flip voltage, the output voltage of delay chip U1 flips, outputting a low-level signal. Transistor Q5 is cut off, relay K1 is de-energized, the switch closes, the circuit returns to its initial state, and the next round of temperature detection begins. The delay time of delay module 12 can be adjusted by adjusting the capacitance of capacitor C1 and the resistance of resistor R6.
[0094] As can be seen from the above, this disclosure achieves the function of delayed reset through capacitor C1, resistor R6 and delay chip U1, which improves the protection function of power equipment and avoids the problem of power equipment damage caused by immediate reset.
[0095] In one embodiment of this disclosure, the overcurrent protection module 14 includes: a sliding resistor RP1, a resistor R3, a resistor R5, an operational amplifier U3, and a MOSFET Q3;
[0096] The first end and the sliding end of the sliding resistor RP1 are both connected to the power supply terminal of the power equipment, and the second end of the sliding resistor RP1 is connected to the non-inverting input terminal of the operational amplifier U3.
[0097] The inverting input terminal of op-amp U3 is connected to the current reference voltage Vref2; the output terminal of op-amp U3 is connected to the gate of MOSFET Q3.
[0098] The grounding terminal of the power equipment is connected to the non-inverting input terminal of the operational amplifier U3 through resistor R3;
[0099] The drain of MOSFET Q3 is connected to the ground terminal of the power equipment, and the source of MOSFET Q3 is grounded through resistor R5.
[0100] In one embodiment of this disclosure, the sliding resistor RP1 and the resistor R3 form a voltage divider branch, which is connected in parallel across the two ends of the power equipment. The voltage divided by the resistor R3 is sent to the non-inverting input of the operational amplifier U2. The operational amplifier U2 compares it with the reference voltage Vref2. When the current flowing through the power equipment is too large, the voltage divided by the resistor R3 is greater than the reference voltage Vref2, and the operational amplifier U2 outputs a high level. At this time, the MOSFET Q3 is turned off, disconnecting the power supply circuit of the power equipment.
[0101] As can be seen from the above, the sliding resistor RP1 and resistor R3 constitute a voltage divider circuit to sample the current in the power equipment. By adjusting the position of the sliding end of the sliding resistor RP1, the overcurrent protection threshold can be set to adapt to the current requirements of different power equipment, thus improving the applicability of this disclosure.
[0102] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.
Claims
1. A power equipment protection control system, characterized by, include: Temperature detection module, high temperature protection module, delay module, reset module, and overcurrent protection module; The temperature detection module is used to detect the temperature of the power equipment; The output terminal of the temperature detection module is connected to the input terminal of the delay module and the first terminal of the reset module, respectively. The control terminal of the reset module is connected to the output terminal of the delay module, and the second terminal of the reset module is connected to the control terminal of the high temperature protection module. The two ends of the high-temperature protection module are used to connect in parallel with the two ends of the power equipment; The input terminal of the overcurrent protection module is connected in parallel with the power equipment, and the output terminal of the overcurrent protection module is used to disconnect the power supply circuit of the power equipment.
2. The power equipment protection control system of claim 1, wherein, The temperature detection module includes: resistor R1, thermistor RT1, and operational amplifier U2; The first end of the resistor R1 is connected to the power supply VDD, and the second end of the resistor R1 is grounded through the thermistor RT1. The first terminal of the thermistor RT1 is connected to the non-inverting input terminal of the operational amplifier U2, and the inverting input terminal of the operational amplifier U2 is connected to the temperature reference voltage Vref1. The output terminal of the operational amplifier U2 is connected to the input terminal of the delay module and the first terminal of the reset module, respectively.
3. The power equipment protection control system of claim 1, wherein, The high-temperature protection module includes: a high-temperature indicator unit and a high-temperature protection unit; The input terminal of the high temperature indicator unit is used to connect to the power supply terminal of the power equipment, and the output terminal of the high temperature indicator unit is grounded. The two ends of the high-temperature protection unit are used to connect in parallel with the power equipment, and the control end of the high-temperature protection unit is connected to the second end of the reset module.
4. The power equipment protection control system of claim 3, wherein, The high temperature indicator unit includes: a first indicator light L1, a second indicator light L2, and a transistor Q6; The first end of the first indicator light L1 is connected to the power supply VCC, and the second end of the first indicator light L1 is connected to the power supply terminal of the power equipment. The base of transistor Q6 is connected to the second terminal of the first indicator light L1, the collector of transistor Q6 is connected to ground through the second indicator light L2, and the emitter of transistor Q6 is connected to the power supply VDD.
5. The power equipment protection control system of claim 3, wherein, The high-temperature protection module includes: transistor Q1, resistor R2 and transistor Q2; The base of transistor Q1 is connected to the second terminal of the reset module; the collector of transistor Q1 is connected to the power supply VDD, and the emitter of transistor Q1 is grounded. The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R2; the collector of transistor Q2 is connected to power supply VCC, and the emitter of transistor Q2 is grounded.
6. The power equipment protection control system of claim 1, wherein, The delay module includes: capacitor C1, resistor R6, delay chip U1, capacitor C2, diode D1, and transistor Q5; The reset terminal and the power supply terminal of the delay chip U1 are both connected to the output terminal of the temperature detection module. The output of the temperature detection module is connected to the trigger terminal and the threshold terminal of the delay chip U1 through the capacitor C1; The threshold terminal of the delay chip U1 is connected to the cathode of the diode D1 and the first terminal of the resistor R6, respectively. The anode of the diode D1, the second terminal of the resistor R6, and the ground terminal of the delay chip U1 are grounded; The control voltage terminal of the delay chip U1 is grounded through the capacitor C2; The base of transistor Q5 is connected to the output terminal of delay chip U1, the collector of transistor Q5 is grounded, and the emitter of transistor Q5 is connected to the first input terminal of the reset module.
7. The power equipment protection control system of claim 1, wherein, The reset module includes: relay K1; The common terminal of relay K1 is the first terminal of the reset module; the first input terminal of relay K1 is connected to the output terminal of the delay module, and the second input terminal of relay K1 is grounded. The first output terminal of the relay K1 is the second terminal of the reset module.
8. The power equipment protection control system of claim 1, wherein, The overcurrent protection module includes: a sliding resistor RP1, a resistor R3, a resistor R5, an operational amplifier U3, and a MOSFET Q3; The first end of the sliding resistor RP1 and the sliding end of the sliding resistor RP1 are both connected to the power supply terminal of the power equipment, and the second end of the sliding resistor RP1 is connected to the non-inverting input terminal of the operational amplifier U3. The inverting input terminal of the operational amplifier U3 is connected to the current reference voltage Vref2; the output terminal of the operational amplifier U3 is connected to the gate of the MOS transistor Q3. The grounding terminal of the power equipment is connected to the non-inverting input terminal of the operational amplifier U3 through the resistor R3; The drain of the MOSFET Q3 is connected to the ground terminal of the power equipment, and the source of the MOSFET Q3 is grounded through the resistor R5.