Method and device for detecting working state of secondary circuit and readable storage medium

Abstract

The invention discloses a method and device for detecting the working state of a secondary circuit and a readable storage medium. The method comprises the following steps: acquiring a connection state of a conduction pulse in a secondary circuit; acquiring current and voltage in the secondary loop in response to the connection state being a switch-on state; determining the working state of the secondary circuit based on the current and the voltage; and outputting abnormal information of the secondary circuit in the abnormal working state in response to the working state being the abnormal working state. The technical problem that the state of the secondary circuit in the power system cannot be detected is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit detection, and in particular to a method, a device and a readable storage medium for detecting the working state of a secondary circuit. Background Art

[0002] At present, with the development of economy and the improvement of residents' living standards, the demand for electricity is growing. In order to meet the needs of economic and social development, the distribution network has ushered in the era of automation through the comprehensive use of automatic control, electronics, computers, communications and other technologies as well as high-performance distribution equipment. With the vigorous development of automation comes the pressure of operation and maintenance. The failure of distribution network automation terminal may be caused by many reasons, most commonly communication problems, power failures, hardware failures, software program problems and improper human operation.

[0003] In the relevant technology, there are effective solutions to communication and other problems, but the secondary circuit on-off failure can only be discovered when the circuit needs to work. When it occurs, the terminal protection has already refused to operate, the switch has failed, or the remote control has failed. It directly affects the efficiency of the automation terminal and the reliability of power supply. At the same time, the early distribution network automation terminal did not have a self-test function, and there was no way to detect the on-off of the secondary circuit of the automation terminal. The existing distribution network automation terminal self-test is also concentrated on the software or the main board, and there is a lack of detection of the secondary circuit arrangement of the automation terminal. Therefore, there is a technical problem that the status of the secondary circuit in the power system cannot be detected.

[0004] With respect to the above-mentioned technical problem of being unable to detect the status of the secondary circuit in the power system, no effective solution has been proposed so far. Summary of the invention

[0005] The embodiments of the present invention provide a method, a device and a readable storage medium for detecting the working state of a secondary circuit, so as to at least solve the technical problem that the state of a secondary circuit in a power system cannot be detected.

[0006] According to one aspect of an embodiment of the present invention, a method for detecting the working state of a secondary circuit is provided. The method may include: obtaining the connection state of a conduction pulse in the secondary circuit; in response to the connection state being the on state, obtaining the current and voltage in the secondary circuit; determining the working state of the secondary circuit based on the current and voltage; in response to the working state being an abnormal working state, outputting abnormal information of the secondary circuit in the abnormal working state.

[0007] Optionally, determining the working state of the secondary circuit based on the current includes: obtaining a preset normal current; performing a difference operation between the current and the preset normal current to determine the current difference; and determining the working state of the secondary circuit based on the current difference.

[0008] Optionally, based on the current difference, determining the working state of the secondary circuit includes: in response to the current difference being less than or equal to a current difference threshold, determining the working state to be a normal working state; in response to the current difference being greater than the current difference threshold, determining the working state to be an abnormal working state.

[0009] Optionally, determining the working state of the secondary circuit based on the voltage includes: comparing the voltage with a preset voltage threshold to obtain a comparison result; and determining the working state of the secondary circuit based on the comparison result.

[0010] Optionally, based on the comparison result, determining the working state of the secondary circuit includes: in response to the voltage being greater than a preset voltage threshold, determining the working state to be a normal working state; in response to the voltage being less than or equal to a preset voltage threshold, determining the working state to be an abnormal working state.

[0011] Optionally, the method for detecting the working state of the secondary circuit further includes: in response to the working state being an abnormal working state, uploading the detection result to the terminal, and detecting the operation status of the equipment in the secondary circuit.

[0012] According to another aspect of an embodiment of the present invention, a device for detecting the working state of a secondary circuit is also provided. The device may include: a first acquisition unit, used to acquire the connection state of a conduction pulse in the secondary circuit; a second acquisition unit, used to acquire the current and voltage in the secondary circuit in response to the connection state being the on state; a determination unit, used to determine the working state of the secondary circuit based on the current and voltage; and an output unit, used to output abnormal information of the secondary circuit in the abnormal working state in response to the working state being the abnormal working state.

[0013] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method for detecting the working status of the secondary circuit in an embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, a processor is further provided. The processor is used to run a program, wherein when the program is run, the method for detecting the working state of a secondary circuit in an embodiment of the present invention is executed.

[0015] According to another aspect of the embodiment of the present invention, a computer program product is provided, which includes computer instructions, and when the computer instructions are executed by a processor, the method for detecting the working state of the secondary circuit in the embodiment of the present invention is implemented.

[0016] In an embodiment of the present invention, the connection state of the conduction pulse in the secondary circuit is obtained; in response to the connection state being the connected state, the current and voltage in the secondary circuit are obtained; based on the current and voltage, the working state of the secondary circuit is determined; in response to the working state being the abnormal working state, the abnormal information of the secondary circuit in the abnormal working state is output. That is to say, the embodiment of the present invention obtains the current and voltage in the secondary circuit when the conduction pulse is in the connected state, determines the working state of the secondary circuit based on the current and voltage, and thus determines the abnormal information of the secondary circuit in the abnormal working state, thereby solving the technical problem of being unable to detect the state of the secondary circuit in the power system, and achieving the technical effect of detecting the state of the secondary circuit in the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a method for detecting the working state of a secondary circuit according to an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a novel power system load control device evaluation system according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of a power system load control device evaluation device according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a device for detecting the working state of a secondary circuit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, functional component or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, functional components or devices.

[0024] According to an embodiment of the present invention, an embodiment of a method for detecting the working status of a secondary circuit is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0025] Figure 1 is a flow chart of a method for detecting the working state of a secondary circuit according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0026] Step S101, obtaining the connection status of the conduction pulse in the secondary circuit.

[0027] In the technical solution provided in the above step S101 of the present invention, the connection state may be a connected state or a disconnected state.

[0028] In this embodiment, the connection state of the conduction pulse in the secondary circuit is obtained. For example, the connection line of the conduction pulse is checked, and the connection state of the conduction pulse in the secondary circuit is obtained through the connection line. This is only an illustrative example, and the specific method for obtaining the connection state of the conduction pulse in the secondary circuit is not limited.

[0029] Step S102, in response to the connection state being the on state, obtaining the current and voltage in the secondary circuit.

[0030] In the technical solution provided by the above step S102 of the present invention, after the connection state of the conduction pulse in the secondary circuit is obtained in step S101, when the connection state is the on state, the current and voltage in the secondary circuit are obtained.

[0031] In this embodiment, when the connection state is the on state, it means that the pulse in the circuit is in a normal state at this time, based on which the current and voltage in the secondary circuit are obtained.

[0032] For example, an ammeter and a voltmeter are used to measure the current and voltage in the secondary circuit. This is only an illustrative example and does not limit the specific method of obtaining the current and voltage in the secondary circuit.

[0033] Step S103, determining the working state of the secondary circuit based on the current and voltage.

[0034] In the technical solution provided in the above step S103 of the present invention, the working state can be a normal working state or an abnormal working state, wherein the abnormal working state can at least include a pressure plate open circuit or a circuit abnormality.

[0035] In this embodiment, after the current and voltage in the secondary circuit are acquired in step S102, the working state of the secondary circuit is determined according to the current and voltage.

[0036] Optionally, the current is compared with an ideal current value. When the current is close to the ideal current value, it indicates that the current in the secondary circuit is normal. Based on this, it can be determined that the secondary circuit is in a normal working state.

[0037] Optionally, when the current is significantly different from the ideal current value, it indicates that the current in the secondary circuit is abnormal. Based on this, it can be determined that the secondary circuit is in an abnormal working state.

[0038] For example, during the time when the conduction pulse is turned on, it is synchronously measured whether there is current flowing through the circuit. If the conducted current is close to the ideal value, it means that the secondary circuit is good, otherwise it means that the pressure plate is open or the circuit is abnormal.

[0039] Optionally, when there is voltage in the secondary circuit, it indicates that the secondary circuit is normal, that is, the secondary circuit is in a normal working state.

[0040] For example, the conduction pulse is turned on at an extreme time, and if a voltage is detected at the voltage detection point, it is determined that the secondary circuit is normal, otherwise the secondary circuit is abnormal.

[0041] Step S104, in response to the working state being an abnormal working state, outputting abnormal information of the secondary circuit in the abnormal working state.

[0042] In the technical solution provided in the above step S104 of the present invention, the abnormal information at least includes the on-off status and communication function of the entire circuit in the secondary circuit.

[0043] In this embodiment, after the working state of the secondary circuit is determined in step S103, when the working state is an abnormal working state, abnormal information of the secondary circuit in the abnormal working state is output. For example, the abnormal working state of the secondary circuit is output by voice and light, which is only an illustrative example and does not limit the specific method of outputting the abnormal information of the secondary circuit in the abnormal working state.

[0044] For example, when the working status is abnormal, it is equipped with sound and light alarm function, and voice and light will light up to prompt when abnormality is detected.

[0045] It should be noted that the above embodiment can be implemented by a load control device evaluation system.

[0046] In the above steps S101 to S104 of the present invention, the connection state of the conduction pulse in the secondary circuit is obtained; in response to the connection state being the connected state, the current and voltage in the secondary circuit are obtained; based on the current and voltage, the working state of the secondary circuit is determined; in response to the working state being the abnormal working state, the abnormal information of the secondary circuit in the abnormal working state is output. That is to say, the embodiment of the present invention obtains the current and voltage in the secondary circuit when the conduction pulse is in the connected state, determines the working state of the secondary circuit according to the current and voltage, and thus determines the abnormal information of the secondary circuit in the abnormal working state, thereby solving the technical problem of being unable to detect the state of the secondary circuit in the power system, and achieving the technical effect of detecting the state of the secondary circuit in the power system.

[0047] The above method of this embodiment is further introduced below.

[0048] As an optional implementation method, determining the working state of the secondary circuit based on the current includes: obtaining a preset normal current; performing a difference operation between the current and the preset normal current to determine the current difference; and determining the working state of the secondary circuit based on the current difference.

[0049] In this embodiment, a preset normal current, that is, an ideal current value, is obtained, and a difference operation is performed between the current and the preset normal current to determine the current difference.

[0050] Optionally, since the secondary circuit requires a current of about 4A and needs to be connected for more than 10ms to connect the closing and opening coils of the circuit breaker, this characteristic of the circuit breaker can be used to determine the working state of the secondary circuit by processing the current value with the preset normal current.

[0051] Optionally, after determining the current difference, the working state of the secondary circuit is determined according to the current difference, and the specific determination method is as follows.

[0052] As an optional implementation method, the working state of the secondary circuit is determined based on the current difference, including: in response to the current difference being less than or equal to the current difference threshold, determining that the working state is a normal working state; in response to the current difference being greater than the current difference threshold, determining that the working state is an abnormal working state.

[0053] In this embodiment, the current difference is compared with the current difference threshold. When the current difference is less than or equal to the current difference threshold, it indicates that the current in the secondary circuit is close to the preset normal current. Based on this, it can be determined that the working state is a normal working state.

[0054] Optionally, when the current difference is greater than the current difference threshold, it means that the current in the secondary circuit is significantly different from the preset normal current. Based on this, it can be determined that the working state is an abnormal working state.

[0055] For example, the secondary circuit requires a current of about 4A and lasts for more than 10ms to connect the closing and opening coils of the circuit breaker. By utilizing this characteristic of the circuit breaker, an extreme conduction pulse can be designed and a current-limiting resistor can be used to conduct the secondary circuit. During the time when the conduction pulse is connected, it is synchronously measured whether there is current flowing through the circuit. If the conducted current is close to the ideal value, it means that the secondary circuit is good. Otherwise, it means that the pressure plate is open or the circuit is abnormal.

[0056] As an optional implementation manner, determining the working state of the secondary circuit based on the voltage includes: comparing the voltage with a preset voltage threshold to obtain a comparison result; and determining the working state of the secondary circuit based on the comparison result.

[0057] In this embodiment, the voltage at the detection voltage point is compared with a preset voltage threshold, and the working state of the secondary circuit is determined according to the comparison result. The specific determination method is as follows.

[0058] Optionally, the potential is determined according to the voltage, and the working state of the secondary circuit is determined according to the potential difference. For example, under normal circumstances, the potential difference is the potential difference between +KM and -KM. If the pressure plate is forgotten to be closed after maintenance, no potential difference will be measured between the two groups. If the contact is poor, a smaller potential difference will be measured. Therefore, it can be determined whether the secondary circuit is normal based on this.

[0059] As an optional implementation method, based on the comparison result, the working state of the secondary circuit is determined, including: in response to the voltage being greater than a preset voltage threshold, determining that the working state is a normal working state; in response to the voltage being less than or equal to a preset voltage threshold, determining that the working state is an abnormal working state.

[0060] In this embodiment, when the voltage is greater than the preset voltage threshold, it indicates that there is voltage in the secondary circuit at this time. Based on this, it can be determined that the working state is a normal working state.

[0061] Optionally, when the voltage is less than or equal to a preset voltage threshold, it indicates that there is no voltage in the secondary circuit at this time, based on which it can be determined that the working state is an abnormal working state.

[0062] For example, the conduction pulse is turned on at an extreme time, and if a voltage is detected at the voltage detection point, it is determined that the secondary circuit is normal, otherwise the secondary circuit is abnormal.

[0063] As an optional embodiment, the method for detecting the working state of the secondary circuit further includes: in response to the working state being an abnormal working state, uploading the detection result to the terminal, and detecting the operation status of the equipment in the secondary circuit.

[0064] In this embodiment, when the working state is an abnormal working state, the detection result is uploaded to the terminal, and the operation of the device in the secondary circuit is detected. For example, the operation of the device in the secondary circuit is detected by a detection module.

[0065] For example, it can monitor the loop status in real time and detect faulty equipment. The on-site detection mode is equipped with sound and light alarm functions, and voice and light prompts will be turned on when abnormalities are found.

[0066] It should be noted that the above embodiment can be implemented by a load control device evaluation system.

[0067] In this embodiment, the connection state of the conduction pulse in the secondary circuit is obtained; in response to the connection state being the on state, the current and voltage in the secondary circuit are obtained; based on the current and voltage, the working state of the secondary circuit is determined; in response to the working state being the abnormal working state, the abnormal information of the secondary circuit in the abnormal working state is output. That is to say, the embodiment of the present invention obtains the current and voltage in the secondary circuit when the conduction pulse is in the on state, determines the working state of the secondary circuit based on the current and voltage, and thus determines the abnormal information of the secondary circuit in the abnormal working state, thereby solving the technical problem of being unable to detect the state of the secondary circuit in the power system, and achieving the technical effect of detecting the state of the secondary circuit in the power system.

[0068] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[0069] At present, with the development of economy and the improvement of residents' living standards, the demand for electricity is growing. In order to meet the needs of economic and social development, the distribution network has ushered in the era of automation through the comprehensive use of automatic control, electronics, computers, communications and other technologies as well as high-performance distribution equipment. With the vigorous development of automation comes the pressure of operation and maintenance. The failure of distribution network automation terminal may be caused by many reasons, most commonly communication problems, power failures, hardware failures, software program problems and improper human operation.

[0070] In the related technology, there are effective solutions to communication and other problems, but the on-off failure of the secondary circuit can only be discovered when the circuit needs to work. When it occurs, the terminal protection has already refused to operate, the opening of the switch has failed, or the remote control has failed. It directly affects the efficiency of the automation terminal and the reliability of power supply. At the same time, the early distribution network automation terminals did not have a self-test function, and there was no way to detect the on-off of the secondary circuit of the automation terminal. The existing distribution network automation terminal self-test is also concentrated on the software or the main board, and there is a lack of detection of the secondary circuit arrangement of the automation terminal. Therefore, there is a technical problem that the status of the secondary circuit in the power system cannot be detected. With respect to the above-mentioned technical problem that the status of the secondary circuit in the power system cannot be detected, no effective solution has been proposed.

[0071] However, the embodiment of the present invention proposes a new and universal secondary circuit on-off detection method, which synchronously measures whether there is current and voltage flowing through the circuit during the time when the conduction pulse is connected. If the conducted current is close to the ideal value, it means that the secondary circuit is good, otherwise it means that the pressure plate is open or the circuit is abnormal. The conduction pulse is connected at an extreme time, and if the voltage is detected at the voltage point at the same time, it is determined that the secondary circuit is normal, otherwise the secondary circuit is abnormal. The technical problem of being unable to detect the status of the secondary circuit in the power system is solved. The technical effect of detecting the status of the secondary circuit in the power system is achieved.

[0072] The embodiments of the present invention are further described below.

[0073] Figure 2 is a schematic diagram of a novel power system load control device evaluation system according to an embodiment of the present invention. Figure 2 As shown in the figure, the load control device evaluation system includes: 4 hard pressure plates. They are 1LP protection tripping pressure plate, 2LP protection closing pressure plate, 3LP remote control tripping pressure plate, and 4LP remote control closing pressure plate. It includes multi-dimensional statistics such as online real-time detection and system file acceptance rate, terminal online rate, branch load collection completeness rate, branch load collection timeliness rate, action success rate, and load response capacity.

[0074] In this embodiment, when the circuit breaker is in the open position, connecting the OUT2 and OUT4 relays will connect the closing circuit. If 2LP or 4LP has poor contact, even if OUT2 or OUT4 is connected, the closing coil may not be connected to close the circuit breaker. Therefore, under normal circumstances, the potential difference measured between 5D:3-5D:4 or 5D:7-5D:8 is the potential difference between +KM and -KM. If the pressure plates 2LP and 4LP are forgotten to be closed after maintenance, no potential difference will be measured between the two groups. If 2LP and 4LP have poor contact, a smaller potential difference will be measured. Therefore, it is possible to measure whether the secondary circuit is normal.

[0075] Alternatively, the normal operation of the secondary circuit is crucial to the safety, stability and reliability of the electrical system. The secondary circuit is mainly used to protect, control and monitor electrical equipment and systems, such as relays, circuit breakers, transformers, etc. If the secondary circuit fails or is abnormal, it may cause serious consequences such as failure of electrical equipment, circuit short circuit, fire, etc.

[0076] Alternatively, potential difference refers to the difference in electric potential between two points in an electric field. Potential difference is an important parameter that describes the change in energy in an electric field, and is usually represented by the symbol ΔV, with the unit being volts (V). The greater the potential difference, the greater the difference in electric potential between the two points, and the greater the change in energy that a charge has when moving between the two points. Potential difference can be represented by the direction and density of the electric field lines, which point in the direction of the decrease in electric potential.

[0077] Alternatively, a circuit breaker is a safety device used to protect a circuit, which is used to automatically cut off the circuit to prevent current overload or short circuit. When the current in the circuit exceeds the rated current of the circuit breaker, the circuit breaker will automatically cut off the circuit and prevent the current from continuing to flow, thereby protecting the safety of electrical equipment and personnel. Circuit breakers are commonly used in residential, commercial and industrial electrical systems and are an indispensable part of electrical systems.

[0078] Figure 3 is a schematic diagram of a power system load control device evaluation device according to an embodiment of the present invention, such as Figure 3 As shown, the secondary circuit requires a current of about 4A and lasts for more than 10ms to connect the closing and opening coils of the circuit breaker. By using this characteristic of the circuit breaker, an extreme conduction pulse can be designed and the secondary circuit can be turned on through a current limiting resistor.

[0079] In this embodiment, whether there is current flowing through the circuit is synchronously measured during the time when the conduction pulse is connected. If the conducted current is close to the ideal value, it means that the secondary circuit is good, otherwise it means that the pressure plate is open or the circuit is abnormal.

[0080] Optionally, the conduction pulse is turned on at an extreme time, and if a voltage is detected at the voltage detection point, it is determined that the secondary circuit is normal, otherwise the secondary circuit is abnormal.

[0081] Optionally, a travel switch connected to the secondary chamber and remote local auxiliary contacts are also designed in the circuit to make the judgment logic rigorous.

[0082] Optionally, a 485 communication loop can be designed to transmit the results back to the automation terminal and upload the signal to the background monitoring.

[0083] Optionally, a real-time monitoring mode and an on-site detection mode can be designed to monitor the circuit status in real time and to detect faulty equipment. The on-site detection mode is equipped with an audible and visual alarm function, and voice and light prompts will be given when abnormalities are detected.

[0084] Optionally, the secondary circuit of the automation terminal is a vital component of the power system. It is composed of secondary equipment (such as mutual inductors, measuring instruments, relays, automatic devices, etc.) interconnected to form an electrical circuit for monitoring, controlling, regulating and protecting the primary equipment. Here it mainly refers to the measurement circuit, relay protection circuit, switch control and signal circuit, operating power supply circuit, and electrical interlocking circuit.

[0085] Optionally, the measurement circuit is used to measure the voltage, current, power and other parameters of the terminal, and transmit the measurement results to the terminal for measurement and protection action basis. The measurement circuit usually includes components such as sensors, signal conditioning circuits and data acquisition systems, through which changes in electrical parameters can be monitored and recorded in real time. The measurement circuit is widely used in laboratory research, engineering design and production manufacturing. Common measurement circuits include instruments such as oscilloscopes, multimeters, and bridges.

[0086] Optionally, relay protection circuit: a protection device used in the power system, which is used to monitor faults and abnormal conditions in the power system and take corresponding measures to protect the safe operation of power equipment and systems. The relay protection circuit is usually composed of relays, power supplies, signal receiving devices and actuators. Its working principle is to monitor parameters such as current, voltage, frequency, etc. When a fault or abnormal condition occurs in the system, the relay protection circuit will send a signal to cut off the power supply or take other measures to ensure the safe operation of the power system according to the preset protection logic and setting parameters. The relay protection circuit plays a very important role in the power system and can effectively protect power equipment and systems to prevent faults from expanding and causing damage.

[0087] Optionally, switch control and signal circuit: used to control the opening and closing operations of the switch device, and transmit relevant signals to the terminal. Switch control is a common electrical control method, which realizes the opening and closing of the circuit or changes the connection method of the circuit by controlling the on and off of the switch. The switch can be a manual switch, an automatic switch, or a remote control switch. In the circuit, the switch is usually used to control the path of the current, thereby realizing the control of the electrical appliance. For example, by controlling the switch of the light, the light can be turned on and off, and by controlling the switch of the motor, the start and stop of the motor can be controlled. The signal circuit refers to the path for transmitting signals in the circuit, which is used to transmit control signals or data signals. In the control system, the signal circuit is usually used to transmit control signals, such as the sensor transmits the collected data signal to the controller, and the controller controls the actuator according to the signal.

[0088] Alternatively, in modern automated control systems, switch control and signal loops are often combined together, and the switch control is used to control the equipment, and the signal loop is used to transmit the control signal, thereby realizing automated control. For example, the switch control and signal loop in the PLC control system can realize automatic control of the production line.

[0089] Optionally, operate the power circuit: provide the required power to various devices in the secondary circuit to ensure their normal operation. Operating the power circuit usually includes: ensuring that all devices are turned off to prevent accidental electric shock or damage to the equipment. Find the control switch or button of the power circuit, which is usually located near the power outlet or power panel. Turn the switch or button from the "off" to the "on" position to start the power circuit. Confirm that the power circuit has been successfully turned on by checking whether the equipment starts working or checking whether the indicator light is on. After use, be sure to turn off the power circuit to avoid wasting energy or causing safety hazards.

[0090] Optionally, the electrical interlocking circuit is used to implement the electrical interlocking function of circuit breakers, disconnectors and other equipment to prevent accidents caused by misoperation. It is a control system used to protect electrical equipment and systems. It adds interlocking devices to the circuit so that the circuit can only be closed or opened under certain conditions if certain conditions are met. This ensures that the equipment can operate normally under certain circumstances and avoids equipment damage or safety accidents caused by misoperation or failure.

[0091] Optionally, the electrical interlock circuit is usually composed of an interlock switch, an interlock relay, an interlock button, etc. The interlock switch will be locked under certain conditions and can only be unlocked when certain conditions are met. The interlock relay is used to monitor the state of the interlock switch and control the closing or opening of the circuit as required. The interlock button is used to manually control the state of the interlock switch.

[0092] Alternatively, electrical interlocking circuits are widely used in industrial production and can be used to protect various equipment and systems, such as motors, transmission systems, lighting systems, etc. It can improve the safety and reliability of equipment, reduce the occurrence of failures and accidents, and protect the safety of personnel and equipment.

[0093] Optionally, an automated terminal secondary circuit on-off detection device: This is an automated device specially designed to detect the on-off status of secondary circuits (including measurement circuits, relay protection circuits, control circuits, signal circuits, etc.) in electrical systems.

[0094] Optionally, it determines whether the circuit is working properly by detecting the electrical connection status of each node or element in the secondary circuit, thereby ensuring the safe and stable operation of the power system.

[0095] Alternatively, a conduction pulse refers to the process in electronics of transmitting a current or voltage signal in a circuit by controlling a switch or element. The conduction pulse is usually used to control the switch state of a circuit or transmit data, and is one of the common operation modes in digital circuits. Through the conduction pulse, the transmission and processing of digital signals can be realized, thereby realizing the functions of various electronic devices.

[0096] Alternatively, a relay is an electrical appliance used to control the on / off of a switch or electrical appliance in a circuit. It can control the on / off of another circuit by switching one circuit, and play the role of amplifying circuit signals, isolating circuits, protecting electrical appliances, etc. Relays are usually composed of electromagnets, contacts, springs and other components. When the electromagnet is excited by current, the contacts close or open, thereby controlling the on / off of the circuit. Relays are widely used in various electrical control systems, such as household appliances, industrial automation, traffic signal control and other fields.

[0097] Optionally, a measurement loop is a circuit used to measure various parameters in a circuit. It usually consists of a power supply, a signal source, a measuring instrument, and a circuit to be measured. The function of the measurement loop is to apply voltage or current to the circuit to be measured, and then use the measuring instrument to measure the voltage, current, impedance and other parameters in the circuit to be measured, so as to understand the performance and characteristics of the circuit to be measured.

[0098] Optionally, common measurement loops include voltage measurement loops, current measurement loops, impedance measurement loops, etc. In practical applications, measurement loops are widely used in the fields of electronics, communications, instrumentation, and the like.

[0099] Optionally, the relay protection circuit is a protection mechanism used to protect equipment and lines in the power system. It monitors the current, voltage and other parameters in the power system, and once an abnormal situation (such as short circuit, overload, etc.) is detected, it will send a signal to trigger the protection device to act, thereby protecting the power equipment and lines from damage.

[0100] Optionally, the relay protection circuit is usually composed of relays, current transformers, voltage transformers, switching devices, etc. Its working principle is to use relays to transmit and process signals according to changes in parameters such as current and voltage in the power system, and ultimately trigger switching devices to protect equipment and lines.

[0101] Optionally, the relay protection circuit plays a vital role in the power system. It can respond to abnormal conditions in the power system in a timely and accurate manner to ensure the safe and stable operation of the power system.

[0102] Alternatively, a control loop refers to a feedback system used to monitor and adjust a variable in a system to ensure that the system operates stably and achieves a predetermined goal. A control loop usually includes three main parts: sensors, controllers, and actuators.

[0103] Optionally, sensors are used to measure variables in the system, such as temperature, pressure, flow, etc., and transmit this information to the controller. The controller compares the information fed back by the sensor with the preset target value and calculates the control amount that needs to be adjusted through the algorithm. Finally, the actuator adjusts the operating variables in the system according to the instructions of the controller so that the system achieves the expected control effect.

[0104] Optionally, the control loop can be applied to various systems, such as automated production lines, household appliances, and automotive control systems, to achieve automated and intelligent control of the system. The design and debugging of the control loop is one of the important tasks of engineers in the field of system control, which can effectively improve the performance and stability of the system.

[0105] Alternatively, a signal loop is a circuit used to process and transmit signals. It can amplify, filter, and condition signals, or transmit signals to other devices or systems. A signal loop is usually composed of multiple components, such as resistors, capacitors, inductors, and amplifiers, etc. Through the combination and connection of these components, signal processing of different functions can be achieved. In electronic equipment and communication systems, signal loops play a vital role, which can help signals be transmitted and processed correctly to ensure the normal operation of the system.

[0106] In this embodiment, by connecting the conduction pulse at an extreme time to detect the on-off state of the circuit, the on-off state of the entire circuit can be detected, rather than a single node, and a communication function is included to send the result by communication, which greatly reduces manpower on-site operations and saves a lot of time at the same time, prevents automation terminal failures in advance, reduces power grid risks, solves the technical problem of being unable to detect the state of the secondary circuit in the power system, and achieves the technical effect of detecting the state of the secondary circuit in the power system.

[0107] In this embodiment, during the time when the conduction pulse is connected, it is synchronously measured whether there is current and voltage flowing through the circuit. If the current is close to the ideal value, it means that the secondary circuit is good, otherwise it means that the pressure plate is open or the circuit is abnormal. The conduction pulse is connected at an extreme time, and if the voltage is detected at the voltage point at the same time, it is determined that the secondary circuit is normal, otherwise the secondary circuit is abnormal. The technical problem of being unable to detect the status of the secondary circuit in the power system is solved. The technical effect of detecting the status of the secondary circuit in the power system is achieved.

[0108] According to an embodiment of the present invention, a device for detecting the working state of a secondary circuit is also provided. It should be noted that the device for detecting the working state of a secondary circuit can be used to execute the method for detecting the working state of a secondary circuit in the method embodiment.

[0109] Figure 4 Schematic diagram of a device for detecting the working state of a secondary circuit according to an embodiment of the present invention. Figure 4 As shown, the detection device 400 for the working state of the secondary circuit may include: a first acquisition unit 401 , a second acquisition unit 402 , a determination unit 403 and an output unit 404 .

[0110] The first acquisition unit 401 is used to acquire the connection state of the conduction pulse in the secondary circuit.

[0111] The second acquisition unit 402 is configured to acquire the current and voltage in the secondary circuit in response to the connection state being the on state.

[0112] The determination unit 403 is used to determine the working state of the secondary circuit based on the current and the voltage.

[0113] The output unit 404 is used for outputting abnormal information of the secondary circuit in the abnormal working state in response to the working state being the abnormal working state.

[0114] Optionally, the determination unit 403 may include: a first acquisition module, used to obtain a preset normal current; a calculation module, used to perform a difference operation between the current and the preset normal current to determine the current difference; and a first determination module, used to determine the working state of the secondary circuit based on the current difference.

[0115] Optionally, the first determination module may include: a first determination submodule, used to determine that the working state is a normal working state in response to the current difference being less than or equal to a current difference threshold; and a second determination submodule, used to determine that the working state is an abnormal working state in response to the current difference being greater than the current difference threshold.

[0116] Optionally, the determination unit 403 may include: a comparison module, used to compare the voltage with a preset voltage threshold to obtain a comparison result; and a second determination module, used to determine the working state of the secondary circuit based on the comparison result.

[0117] Optionally, the second determination module may include: a third determination submodule, used to determine that the working state is a normal working state in response to the voltage being greater than a preset voltage threshold; and a fourth determination submodule, used to determine that the working state is an abnormal working state in response to the voltage being less than or equal to a preset voltage threshold.

[0118] Optionally, the device 400 for detecting the working state of the secondary circuit may further include: an uploading unit, configured to upload the detection result to the terminal in response to the working state being an abnormal working state, and detect the operating condition of the equipment in the secondary circuit.

[0119] In this embodiment, the connection state of the conduction pulse in the secondary circuit is obtained; in response to the connection state being the on state, the current and voltage in the secondary circuit are obtained; based on the current and voltage, the working state of the secondary circuit is determined; in response to the working state being the abnormal working state, the abnormal information of the secondary circuit in the abnormal working state is output. That is to say, the embodiment of the present invention obtains the current and voltage in the secondary circuit when the conduction pulse is in the on state, determines the working state of the secondary circuit based on the current and voltage, and thus determines the abnormal information of the secondary circuit in the abnormal working state, thereby solving the technical problem of being unable to detect the state of the secondary circuit in the power system, and achieving the technical effect of detecting the state of the secondary circuit in the power system.

[0120] According to an embodiment of the present invention, a computer-readable storage medium is further provided. The storage medium includes a stored program, wherein the program executes the method for detecting the working state of a secondary circuit in the method embodiment.

[0121] According to an embodiment of the present invention, a processor is further provided. The processor is used to run a program, wherein the program executes the method for detecting the working state of the secondary circuit in the method embodiment when running.

[0122] According to an embodiment of the present invention, a computer program product is further provided. The computer program product includes computer instructions. When the computer instructions are executed by a processor, the method for detecting the working state of the secondary circuit in the method embodiment is implemented.

[0123] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0124] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0125] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0126] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0127] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0128] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent functional component, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software functional component, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store program codes.

[0129] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for detecting the working state of a secondary circuit, characterized in that: include: Get the connection status of the conduction pulse in the secondary circuit; In response to the connection state being an on state, obtaining a current and a voltage in the secondary circuit; determining an operating state of the secondary circuit based on the current and the voltage; In response to the operating state being an abnormal operating state, abnormal information of the secondary circuit in the abnormal operating state is output.

2. The method according to claim 1, characterized in that Based on the current, determining the working state of the secondary circuit includes: Get the preset normal current; Performing a difference operation between the current and the preset normal current to determine the current difference; Based on the current difference, the operating state of the secondary circuit is determined.

3. The method according to claim 2, characterized in that Determining the working state of the secondary circuit based on the current difference includes: In response to the current difference being less than or equal to the current difference threshold, determining that the working state is a normal working state; In response to the current difference being greater than the current difference threshold, the operating state is determined to be the abnormal operating state.

4. The method according to claim 1, characterized in that: Determining a working state of the secondary circuit based on the voltage includes: Comparing the voltage with a preset voltage threshold to obtain a comparison result; Based on the comparison result, the working state of the secondary circuit is determined.

5. The method according to claim 4, characterized in that Determining the working state of the secondary circuit based on the comparison result includes: In response to the voltage being greater than the preset voltage threshold, determining that the working state is a normal working state; In response to the voltage being less than or equal to the preset voltage threshold, the operating state is determined to be the abnormal operating state.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: In response to the working state being the abnormal working state, the detection result is uploaded to the terminal, and the operation status of the equipment in the secondary circuit is detected.

7. A device for detecting the working state of a secondary circuit, characterized in that: include: A first acquisition unit, used to acquire the connection state of the conduction pulse in the secondary circuit; a second acquisition unit, configured to acquire a current and a voltage in the secondary circuit in response to the connection state being an on state; a determining unit, configured to determine a working state of the secondary circuit based on the current and the voltage; The output unit is used for outputting abnormal information of the secondary circuit in the abnormal working state in response to the working state being the abnormal working state.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

9. A processor, characterized in that: The processor is used to run a program, wherein the program executes the method according to any one of claims 1 to 6 when running.

10. A computer program product, characterized in that The computer program product comprises computer instructions, which implement the method according to any one of claims 1 to 6 when executed by a processor.

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