Fault detection and processing system for live display system of ring main unit

Abstract

The invention discloses a ring main unit live display system fault detection and processing system. A current and voltage value obtaining unit obtains the voltage value and the current value of an instantaneous ring main unit live display system and the voltage value and the current value of a previous ring main unit live display system; the current and voltage analysis module unit analyzes a voltage value and a current value of a previous ring main unit live display system, establishes an elastic network regression model, and calculates coefficients of all abnormal states; the early warning unit analyzes a voltage value and a current value of the instantaneous ring main unit live display system, performs abnormal state detection on instantaneous reference information by using an established elastic network regression model, and calculates the possibility of abnormal state; and after receiving the fault information of the early warning unit, the processing unit selects a coefficient of a corresponding abnormal state in the elastic network regression model according to the fault type, and obtains key features to report and maintain. According to the invention, the working safety and stability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fault detection and handling of live display systems, and particularly to a fault detection and handling system for a live display system of a ring main unit. Background Art

[0002] ‌High-voltage live display devices are widely used to monitor the live state of high-voltage electrical equipment, ensuring that construction personnel operate under the forced interlock of earthing switches and disconnectors to avoid potential safety hazards. It is applicable to primary equipment such as circuit breakers, cable terminals, busbars, main transformers, and incoming and outgoing lines of power supply lines, ensuring the stable operation and safe maintenance of high-voltage electrical equipment.

[0003] The working principle of high-voltage live display devices is based on the principle of electric field coupling, and non-contact measurement is carried out through sensors at a safe distance. The device mainly consists of two parts: a sensor and a display. The sensors are respectively aligned with the "A, B, C" three-phase live conductors, maintaining a certain safe distance from the high-voltage live conductors, receiving the electric field signals of the high-voltage live conductors and transmitting them to the display for comparison and judgment. The working voltage range of high-voltage live displays is above 1000V. Usually, a power voltage converter is used to convert low voltage into high voltage and output it. The high voltage is introduced into the capacitor of the live tube to establish an electric field.

[0004] ‌When the potential inside the live tube reaches a certain level, local discharge will occur in the gas, forming charged particles that move rapidly inside the tube, leaving charges. When the charges accumulate to a certain extent, discharges will occur at different positions, forming light spots, lines, or numbers.

[0005] However, the live display device itself is a vulnerable component, often resulting in incorrect indication of the live state of the equipment, bringing great potential safety hazards to equipment operation and maintenance personnel, and also causing great trouble to on-site operations. Therefore, detecting whether the live display device fails and replacing it in a timely manner is an important task. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a fault detection and handling system for a live display system of a ring main unit, improving the safety and stability of work.

[0007] To solve the above technical problem, the present invention adopts the following technical solutions: A fault detection and handling system for a live display system of a ring main unit includes a current and voltage value acquisition unit, a current and voltage analysis module unit, an early warning unit, and a processing unit; The described current-voltage value acquisition unit acquires the voltage value and current value of the instantaneous switchgear live display system, as well as the voltage value and current value of the previous switchgear live display system. The voltage value and current value of the previous switchgear live display system include voltage conversion data, current conversion data, and the abnormal state of the switchgear live display system. The described current-voltage analysis module unit analyzes the voltage value and current value of the previous switchgear live display system, obtains characteristic information, generates an original reference value, and establishes an elastic net regression model based on the original reference value and the abnormal state information of the switchgear live display system. The elastic net regression model contains the coefficients of all abnormal states and calculates all the coefficients of the abnormal states. The warning unit analyzes the voltage value and current value of the instantaneous switchgear live display system, obtains characteristic information, generates instantaneous reference information, uses the established elastic net regression model to detect the abnormal state of the instantaneous reference information, calculates the probability of the abnormal state through the coefficient of the abnormal state and the instantaneous reference information, and selects the abnormal state with the highest probability as the fault result forecast. After receiving the fault information from the warning unit, the processing unit selects the corresponding coefficient of the abnormal state in the elastic net regression model according to the fault type and obtains the key characteristics for reporting for repair.

[0008] Furthermore, the original reference value of the current-voltage analysis module unit includes key characteristics including voltage fluctuation amplitude, current fluctuation amplitude, average voltage, and average current. The voltage fluctuation amplitude and current fluctuation amplitude are obtained from the measured voltage fluctuation range and current fluctuation range under the stable working state.

[0009] Furthermore, the described current-voltage value acquisition unit is provided with a filter circuit.

[0010] Furthermore, the processing method of the switchgear live display system fault detection and processing system of the present invention includes the following steps: Step 1): The input end of the current-voltage value acquisition unit acquires the voltage value and current value of the instantaneous switchgear live display system and the voltage value and current value of the previous switchgear live display system through a filter circuit. Step 2): The current-voltage analysis module unit establishes an elastic net regression model according to the original reference value obtained by the current-voltage value acquisition unit and calculates the coefficient of the abnormal state; uses the established elastic net regression model to detect the abnormal state of the instantaneous reference information, judges the probability of the abnormal state; and conducts a fault result forecast. Step 3): The warning unit analyzes the voltage value and current value of the instantaneous switchgear live display system. Step 4): After the processing unit receives the fault information from the warning unit, according to the fault type, it selects the coefficient corresponding to the abnormal state in the elastic net regression model, and obtains the key features for reporting for repair.

[0011] The beneficial effects of the present invention are as follows: The present invention can quickly and accurately detect the voltage and current change characteristics of the ring main unit cabinet; establish an accurate fault detection model to improve the accuracy of detection; in addition, the original real-time voltage and current values can instantaneously provide very reliable support for detection, identify abnormal situations in the operation of the live display system, and implement monitoring of the live display system to improve the safety and stability of work. Specific embodiments

[0012] The technical solution of the present invention will be clearly and completely described below through specific embodiments. Embodiment 1

[0013] A fault detection and processing system for a live display system of a ring main unit cabinet of the present invention includes a current and voltage value acquisition unit, a current and voltage analysis module unit, a warning unit, and a processing unit; The current and voltage value acquisition unit acquires the voltage value and current value of the instantaneous live display system of the ring main unit cabinet, as well as the voltage value and current value of the previous live display system of the ring main unit cabinet, where the voltage value and current value of the previous live display system of the ring main unit cabinet include voltage conversion data, current conversion data, and the abnormal state of the live display system of the ring main unit cabinet; The current and voltage analysis module unit analyzes the voltage value and current value of the previous live display system of the ring main unit cabinet, obtains characteristic information, generates an original reference value, and establishes an elastic net regression model based on the original reference value and the abnormal state information of the live display system of the ring main unit cabinet, where the elastic net regression model includes all coefficients of abnormal states, and calculates all coefficients of abnormal states; The warning unit analyzes the voltage value and current value of the instantaneous live display system of the ring main unit cabinet, obtains characteristic information, generates an instantaneous reference information, uses the established elastic net regression model to detect the abnormal state of the instantaneous reference information, calculates the probability of abnormal state through the coefficient of abnormal state and the instantaneous reference information, and selects the abnormal state with the greatest probability as the fault result forecast; After the processing unit receives the fault information from the warning unit, according to the fault type, it selects the coefficient corresponding to the abnormal state in the elastic net regression model, and obtains the key features for reporting for repair.

[0014] In this embodiment, the original reference value of the current and voltage analysis module unit includes key features including voltage fluctuation amplitude, current fluctuation amplitude, average voltage, and average current; the voltage fluctuation amplitude and current fluctuation amplitude are obtained from the measured voltage fluctuation range and current fluctuation range under the stable working state.

[0015] Furthermore, the current-voltage value acquisition unit is provided with a filter circuit.

[0016] The present invention can quickly and accurately detect the voltage and current change characteristics of the ring main unit; establish an accurate fault detection model to improve the accuracy of detection; in addition, the original real-time voltage and current values can instantaneously provide very reliable support for detection, identify abnormal conditions in the operation of the live display system, implement monitoring of the live display system, and improve the safety and stability of the work. Embodiment 2

[0017] A processing method for a fault detection and processing system of a live display system of a ring main unit includes the following steps: Step 1): The input end of the current-voltage value acquisition unit obtains the voltage value and current value of the instantaneous live display system of the ring main unit and the voltage value and current value of the previous live display system of the ring main unit through a filter circuit; Step 2): The current-voltage analysis module unit establishes an elastic net regression model according to the original reference values by the current-voltage value acquisition unit and calculates the coefficient of abnormality; uses the established elastic net regression model to detect the abnormality of the instantaneous reference information, judges the possibility of abnormality; and makes a fault result prediction; Step 3): The warning unit analyzes the voltage value and current value of the instantaneous live display system of the ring main unit; Step 4): After receiving the fault information from the warning unit, the processing unit selects the corresponding coefficient of abnormality in the elastic net regression model according to the fault type, and obtains the key features for reporting for maintenance.

[0018] The above is only a preferred embodiment of the present invention and is not used to limit the present invention. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the technical solution of the present invention.

Claims

1. A fault detection and processing system for a live display system of a ring main unit, characterized in that: It includes a current and voltage value acquisition unit, a current and voltage analysis module unit, an early warning unit, and a processing unit; The current and voltage value acquisition unit acquires the voltage value and current value of the instantaneous switch cabinet live display system, as well as the voltage value and current value of the previous switch cabinet live display system. The voltage value and current value of the previous switch cabinet live display system include voltage conversion data, current conversion data, and the abnormal state of the switch cabinet live display system; The current and voltage analysis module unit analyzes the voltage value and current value of the previous switch cabinet live display system to obtain characteristic information, generates an original reference value, and establishes an elastic net regression model based on the original reference value and the abnormal state information of the switch cabinet live display system. The elastic net regression model contains the coefficients of all abnormal states and calculates the coefficients of all abnormal states; The early warning unit analyzes the voltage value and current value of the instantaneous switch cabinet live display system to obtain characteristic information, generates instantaneous reference information, uses the established elastic net regression model to detect abnormal states of the instantaneous reference information, calculates the probability of abnormal states through the coefficients of abnormal states and the instantaneous reference information, and selects the abnormal state with the highest probability as the fault result forecast; After receiving the fault information from the early warning unit, the processing unit selects the corresponding coefficient of the abnormal state in the elastic net regression model according to the fault type, and obtains the key characteristics for reporting for maintenance.

2. The fault detection and processing system for the live display system of a ring main unit according to claim 1, wherein: The original reference value of the current and voltage analysis module unit includes key characteristics including voltage fluctuation amplitude, current fluctuation amplitude, average voltage, and average current; the voltage fluctuation amplitude and current fluctuation amplitude are obtained by measuring the voltage fluctuation range and current fluctuation range in the stable working state.

3. A fault detection and handling system for a live display system of a ring main unit, as claimed in claim 1, wherein: The current and voltage value acquisition unit is provided with a filter circuit.

4. The processing method of the fault detection and processing system for the live display system of the ring main unit according to claim 1, characterized in that: It includes the following steps: Step 1): The input end of the current and voltage value acquisition unit acquires the voltage value and current value of the instantaneous switch cabinet live display system of the switch cabinet live display system through the filter circuit, as well as the voltage value and current value of the previous switch cabinet live display system; Step 2): The current and voltage analysis module unit establishes an elastic net regression model according to the original reference value acquired by the current and voltage value acquisition unit and calculates the coefficient of abnormal state; uses the established elastic net regression model to detect the abnormal state of the instantaneous reference information and judge the probability of abnormal state; And conducts a fault result forecast; Step 3): The early warning unit analyzes the voltage value and current value of the instantaneous switch cabinet live display system; Step 4): After receiving the fault information from the early warning unit, the processing unit selects the corresponding coefficient of the abnormal state in the elastic net regression model according to the fault type, and obtains the key characteristics for reporting for maintenance.