CN113687195A - Electrical equipment discharge fault simulation device and method - Google Patents
Electrical equipment discharge fault simulation device and method Download PDFInfo
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- CN113687195A CN113687195A CN202110931995.3A CN202110931995A CN113687195A CN 113687195 A CN113687195 A CN 113687195A CN 202110931995 A CN202110931995 A CN 202110931995A CN 113687195 A CN113687195 A CN 113687195A
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Abstract
The application discloses a device and a method for simulating discharge type faults of electrical equipment, wherein the device comprises a sine wave high-frequency oscillation booster circuit, a control panel, a wireless transmission module, a wireless remote controller, an electrode connecting rod and a discharge electrode; the sine wave high-frequency oscillation booster circuit generates pulse high voltage; controlling the working state of the panel display device; the working state of the device is switched by matching with the wireless remote controller; controlling a sine wave high-frequency oscillation voltage boosting circuit to generate pulse high voltage; the wireless transmission module receives a wireless control signal; the wireless remote controller generates a wireless control signal to remotely control the discharge of the device; the electrode connecting rod generates discharge at different positions; the discharge electrodes simulate different discharge types. The invention can simulate typical discharge faults of various electrical equipment so as to facilitate researchers to develop on-line monitoring technical research on the discharge faults of the electrical equipment, and has the characteristics of small volume, simple structure, low cost, convenient use and the like.
Description
Technical Field
The invention belongs to the technical field of electrical equipment fault diagnosis, and relates to a device and a method for simulating electrical equipment discharge faults.
Background
The insulation deterioration of electrical equipment is a major cause of equipment failure. The failure of power equipment, especially large-scale equipment, can cause huge economic loss, and the monitoring of electrical equipment insulation state has always been very important to the electric power operation department.
When insulation deterioration occurs in an electrical device in an operating state, discharge-type faults such as partial discharge and arc breakdown often occur. When a discharge fault occurs, electromagnetic waves, ultrasonic waves and optical signals are excited at a discharge position, and surrounding insulating media are caused to generate chemical reactions, so that the accurate grasping of the characteristics of the information has important significance for timely finding and diagnosing the insulation degradation of electrical equipment.
In the existing research and engineering experiments, the characteristic information of the discharge fault is often analyzed by carrying out a high-voltage test, the fault state can be simulated more accurately by the method, the cost for building a set of high-voltage test system is high, the equipment is large in size, inconvenient to move and use, and the life safety of testers is easily endangered.
Disclosure of Invention
In order to overcome the defects in the prior art, the device and the method for simulating the discharge faults of the electrical equipment can be connected to 220V mains supply for use, are used for generating the discharge faults in typical insulating media of various electrical equipment, and are convenient for researching the propagation rule of discharge fault characteristic signals, the chemical changes of the insulating media under the excitation of the discharge faults and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an electric equipment discharge fault simulation device comprises a sine wave high-frequency oscillation booster circuit, a control panel, a wireless transmission module, a wireless remote controller, an electrode connecting rod and a discharge electrode;
the sine wave high-frequency oscillation booster circuit is used for generating a pulse high voltage of 20-30 kV;
the control panel is used for providing a human-computer interaction interface; displaying the working state of the device; the wireless remote controller is matched with the wireless remote controller to switch the wired and wireless working states of the device; controlling a sine wave high-frequency oscillation booster circuit to generate pulse high voltage;
the wireless remote controller is used for generating a wireless control signal and carrying out remote control on the device discharge;
the wireless transmission module is integrated in the device and used for receiving a wireless control signal of the wireless remote controller;
the electrode connecting rod is used for generating discharge at different positions;
the discharge electrode is used for simulating different discharge types.
The invention further comprises the following preferred embodiments:
preferably, the sine wave high-frequency oscillation voltage boosting circuit comprises a power supply, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4, a zener diode ZD1, a zener diode ZD2, a MOS transistor MOS1, a MOS transistor MOS2, an inductor L1, an inductor L2, an inductor L3, a capacitor C1, a capacitor C2 and a control switch S;
the inductor L2 and the inductor L3 are wound on the same magnetic core GTC;
the positive pole of the power supply is connected with one end of an inductor L1, the positive pole of the power supply is connected with one ends of a resistor R1 and a resistor R2 through a control switch S, and the other end of the inductor L1 is connected with the common end of an inductor L2 and an inductor L3;
the other end of the resistor R1 is connected with the anode of the diode D2, one end of the resistor R3, the anode of the zener diode ZD1 and the gate of the MOS transistor MOS 1;
the other end of the resistor R2 is connected with the anode of the diode D1, one end of the resistor R4, the anode of the zener diode ZD2 and the gate of the MOS transistor MOS 2;
the source electrodes of the MOS transistor MOS1 and the MOS transistor MOS2 are connected with the cathode of the power supply, and the other ends of the voltage stabilizing diode ZD1, the cathode of the voltage stabilizing diode ZD2, the resistor R3 and the resistor R4 are connected with the cathode of the power supply;
the cathode of the diode D1 is connected with the drains of the MOS tube MOS1 and the MOS tube MOS 2;
the cathode of the diode D2 is connected with the drain of the MOS tube MOS2, one end of the capacitor C1 and the capacitor C2 and the other end of the inductor L3;
the other ends of the capacitor C1 and the capacitor C2 are connected with the drain of the MOS transistor MOS1, the other ends of the capacitor C1 and the capacitor C2 and the other end of the inductor L2.
Preferably, the resistors R1 and R2 are direct-insertion resistors with the resistance of 470R and the power of 2W;
the resistor R3 and the resistor R4 adopt 10k omega resistors;
the type of the diode D1 and the type of the diode D2 are UF 4007;
the type of the diodes D3 and D4 is IN 4742;
the MOS1 and MOS2 models are IRFP 250N;
the inductance of the inductor L1 is 80-100 uH;
the capacitance of the capacitor C1 and the capacitance of the capacitor C2 is 0.33 uF.
Preferably, the control panel comprises a power prompting lamp, a switch knob and a discharge control button;
the power supply prompting lamp displays different colors when the device is connected to 220V mains supply, the device works and the device fails, and prompts the working state of the device;
the switch knob is used for controlling the device to be started and switching the wired and wireless working states of the device;
and the discharge control button is used for controlling the sine wave high-frequency oscillation booster circuit to generate pulse high voltage.
Preferably, a plurality of electrode links of different lengths or adjustable lengths are provided to generate the discharge signal at different locations.
Preferably, the bottom of the discharge connecting rod is connected with the device base through threads;
the top of the electrode connecting rod is connected with the discharge electrode through threads, and the discharge electrode can be replaced through the threads so as to simulate different discharge types.
Preferably, the discharge electrodes are divided into needle electrodes and circular plate electrodes, and needle-needle discharge, needle-plate discharge and plate-plate discharge can be simulated by combining the two electrodes.
Preferably, the electrode link and the discharge electrode link are made of copper.
The invention also discloses a method for simulating the discharge fault of the electrical equipment, which comprises the following steps:
step 1: setting an electrode connecting rod and a discharge electrode according to the discharge position and the discharge type;
step 2: the device is connected to 220V commercial power;
and step 3: rotating a switch knob on the control panel to turn on the device;
and 4, step 4: the sine wave high-frequency oscillation booster circuit is controlled to generate pulse high voltage through a discharge control button on a control panel;
and 5: the electrode connecting rod and the discharge electrode simulate discharge.
Preferably, in the fault simulation process, a power indicator lamp on the rotary control panel is observed, when the fault color is displayed, the insulation gap is not punctured, and a large amount of residual charges exist on the discharge electrode and the electrode connecting rod; or the inside of the device fails to generate pulse high voltage, and the device needs to be overhauled;
after the device was used, the discharge electrode of the device was subjected to discharge treatment using a ground rod.
The beneficial effect that this application reached:
the invention can simulate typical discharge faults of various electrical equipment so as to facilitate researchers to develop on-line monitoring technical research on the discharge faults of the electrical equipment, and has the characteristics of small volume, simple structure, low cost, convenient use and the like;
according to the invention, a current-limiting loop formed by the control switch S, the inductor L1 and the like is added in the sine wave high-frequency oscillation booster circuit part, so that the impact on the MOS tube caused by the frequent start-stop working condition of the circuit is reduced, and the MOS tube is prevented from being damaged.
Drawings
FIG. 1 is a structural diagram of a discharge fault simulation device of an electrical apparatus according to the present invention;
FIG. 2 is a diagram of a sine wave high frequency oscillation boosting circuit according to an embodiment of the present invention;
FIG. 3 is a schematic view of a discharge electrode in an embodiment of the present invention;
the reference numbers in fig. 1 are: 1-1: first electrode link, 1-2: second electrode link, 2-1: first discharge electrode, 2-2: second discharge electrode, 3: sine wave high-frequency oscillation booster circuit, 4: wireless transmission module, 5: discharge control button, 6: power supply warning lamp, 7: switch knob, 8: a wireless remote controller.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1, an electrical equipment discharge fault simulation apparatus according to the present invention includes: the device comprises a sine wave high-frequency oscillation booster circuit 3, a control panel, a wireless transmission module 4, a wireless remote controller 8, an electrode connecting rod and a discharge electrode;
the sine wave high-frequency oscillation booster circuit 3 is used for generating 20-30kV pulse high voltage;
as shown in fig. 2, the sine wave high-frequency oscillation boost circuit includes a power supply, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a zener diode ZD1, a zener diode ZD2, a diode D3, a diode D4, a MOS transistor MOS1, a MOS transistor MOS2, an inductor L1, an inductor L2, an inductor L3, a capacitor C1, a capacitor C2, and a control switch S;
the inductor L2 and the inductor L3 are wound on the same magnetic core GTC;
the positive pole of the power supply is connected with one end of an inductor L1, the positive pole of the power supply is connected with one ends of a resistor R1 and a resistor R2 through a control switch S, and the other end of the inductor L1 is connected with the common end of an inductor L2 and an inductor L3;
the other end of the resistor R1 is connected with the anode of the diode D2, one end of the resistor R3, the anode of the zener diode ZD1 and the gate of the MOS transistor MOS 1;
the other end of the resistor R2 is connected with the anode of the diode D1, one end of the resistor R4, the anode of the zener diode ZD2 and the gate of the MOS transistor MOS 2;
the source electrodes of the MOS transistor MOS1 and the MOS transistor MOS2 are connected with the cathode of the power supply, and the other ends of the voltage stabilizing diode ZD1, the cathode of the voltage stabilizing diode ZD2, the resistor R3 and the resistor R4 are connected with the cathode of the power supply;
the cathode of the diode D1 is connected with the drains of the MOS tube MOS1 and the MOS tube MOS 2;
the cathode of the diode D2 is connected with the drain of the MOS tube MOS2, one end of the capacitor C1 and the capacitor C2 and the other end of the inductor L3;
the other ends of the capacitor C1 and the capacitor C2 are connected with the drain of the MOS transistor MOS1, the other ends of the capacitor C1 and the capacitor C2 and the other end of the inductor L2.
According to fig. 2, the sine wave high frequency oscillation boosting circuit includes two current protection circuits, two voltage protection circuits, a high frequency oscillator and a high voltage output transformer, specifically:
current protection: a resistor R1, a resistor R2 and an inductor L1 which are connected in series with the positive pole and the negative pole of the power supply;
the resistor R1 and the resistor R2 are used for limiting the current passing through the grid of the MOS tube in the oscillation circuit and avoiding the breakdown of the tube;
the inductor L1 is used for ensuring that the DS pole of the MOS tube cannot be damaged due to huge surge flowing at the moment of magnetic saturation by utilizing the non-mutability of the inductor current.
Voltage protection: the voltage stabilizing diode ZD1, the resistor R3, the voltage stabilizing diode ZD2 and the resistor R4 clamp the voltage applied to the MOS tube in a safe range to avoid breakdown.
A high-frequency oscillator: MOS transistor MOS1, MOS transistor MOS2, diode D1, diode D2, capacitor C1 and capacitor C2;
when the control switch S is switched on, the current flows through R1, R2 is stabilized by ZD1 and ZD2 and then respectively sent to MOS1 and the GS electrode of MOS2, so that the two MOS transistors are switched on simultaneously;
due to the discreteness of component parameters, the DS currents of the two MOS transistors are different at the moment of power-on, and if the current flowing through the MOS2 is slightly larger, i.e. IL3>IL2。
Since L2 and L3 are wound around the same core and are magnetically coupled, the excitation current to the core is IL2，IL3Sum due to IL3>IL2From I to IL2And IL3The current directions are opposite, so the exciting current to the iron core is IP1＝IL3-IL2；
IL2And IL3Excitation current I ofP1Having the same magnetic path, IP1A mutual inductance current will be generated at L2;
L2，L3，C1，C2forming a parallel resonance, the direction of this mutual inductive current and IL2Instead, the result of such positive feedback is IL2Smaller and smaller, it can finally be seen purely that only L3 participates in the excitation.
Meanwhile, the voltage of the point B is increased, the diode D1 is cut off, the point C stores high-point voltage, the MOS2 is kept on continuously, because the VDS is very small when the MOS2 is turned on, the point A is approximately grounded, the diode D2 is turned on, the potential of the point D is forcibly reduced to about 0.7V, the MOS1 loses VGS and is cut off, the excitation of the magnetic core by the L3 is finally saturated along with the time, at the moment, the current is just reduced to 0 due to the fact that the magnetic core is saturated and loses mutual inductance, the voltage on the DS of the MOS1 is 0, the L3 loses inductance and is approximately a resistor of a few milliohms, the instantaneous large current is completely added to the on-resistance Ron of the MOS2, the potential of the point A is increased instantaneously, the D2 is cut off, the potential of the point D is recovered to high voltage, the MOS1 obtains VGS and is turned on, the point B is approximately grounded, and the voltage of the point C is reduced to 0.7V. MOS2 is turned off, MOS1 remains on, and the circuit state flips again when L2 is excited to saturation, and the process is repeated.
In the whole process, the overturning time is jointly determined by the capacities of the resonant capacitors C1 and C2 and L2+ L3, and because the resonant capacitors C1 and C2 form resonance, the primary voltage waveform is sine wave, and the harmonic component is greatly reduced.
Outputting a high-voltage transformer: GTC outputs the sine wave high frequency voltage after boosting.
In specific implementation, the resistors R1 and R2 are direct-insertion resistors with the resistance of 470R and the power of 2W;
the resistor R3 and the resistor R4 adopt 10k omega resistors;
the type of the diode D1 and the type of the diode D2 are UF 4007;
the type of the diodes D3 and D4 is IN 4742;
the MOS1 and MOS2 models are IRFP 250N;
the inductance of the inductor L1 is 80-100 uH;
the capacitance of the capacitor C1 and the capacitance of the capacitor C2 are 0.33uF, and high-voltage pulses of about 1WV are formed together.
The control panel is used for providing a human-computer interaction interface; displaying the working state of the device; the wireless remote controller 8 is matched with the wireless remote controller to switch the wired and wireless working states of the device; controlling the sine wave high-frequency oscillation booster circuit 3 to generate pulse high voltage;
in specific implementation, the control panel comprises a power supply prompting lamp 6, a switch knob 7 and a discharge control button 5;
the power supply prompting lamp 6 displays different colors when the device is connected to 220V mains supply, the device works and the device fails, and prompts the working state of the device;
the switch knob 7 is used for controlling the starting of the device and the switching of the wired and wireless working states of the device;
and the discharge control button 5 is used for controlling the sine wave high-frequency oscillation boosting circuit 3 to generate pulse high voltage.
When the device is used specifically, the device is connected to 220V mains supply, and at the moment, the power supply prompting lamp 6 on the control panel displays yellow;
the switch knob 7 on the control panel is rotated, and at the moment, the power supply prompting lamp 6 displays green;
the discharge control button 5 on the control panel is clicked to generate pulse high voltage, and if the insulation gap is not broken down, the power prompting lamp 6 displays red (at the moment, a large amount of residual charges exist on the electrode and the electrode connecting rod, or the inside of the device fails to generate the pulse high voltage).
The wireless transmission module 4 is integrated in the device and used for receiving wireless control signals;
the wireless remote controller 8 is used for generating a wireless control signal and controlling the generation of discharge at a safe position when the simulation device is arranged at a dangerous position (such as the top of a power transformer);
the wireless communication function is used for carrying out the simulation of discharging in comparatively dangerous region such as transformer top, when needing to use wireless mode, switches the shift knob 7 on the control panel to wireless function, uses wireless remote control 8 to carry out discharge control.
The electrode connecting rod is used for generating discharge at different positions;
the discharge electrode is used for simulating different discharge types.
In specific implementation, a plurality of electrode connecting rods with different lengths or electrode connecting rods with adjustable lengths are arranged to generate discharge signals at different positions.
In fig. 1, a first electrode connecting rod 1-1, a second electrode connecting rod 1-2, a first discharge electrode 2-1 and a second discharge electrode 2-2 are adopted to simulate different types of discharge at different positions.
The bottom of the discharge connecting rod is connected with the device base through threads;
the top of the electrode connecting rod is connected with the discharge electrode through threads, and the discharge electrode can be replaced through the threads so as to simulate different discharge types.
The electrode connecting rod and the discharge electrode connecting rod are made of copper.
The first electrode connecting rod 1-1 and the second electrode connecting rod 1-2 are connected with the positive electrode end and the negative electrode end of the discharge circuit through M6 threads, and simulation can be performed by replacing electrode connecting rods with different lengths according to the simulation requirements of partial discharge at different depths and different positions. As shown in fig. 3, the discharge electrodes are divided into a needle electrode and a circular plate electrode, which can be replaced by M5 screw threads, and by combining two electrodes, needle-needle discharge, needle-plate discharge, and plate-plate discharge can be simulated.
The invention discloses a method for simulating discharge faults of electrical equipment, which comprises the following steps:
step 1: setting an electrode connecting rod and a discharge electrode according to the discharge position and the discharge type;
step 2: the device is connected to 220V commercial power;
and step 3: a switch knob 7 on the control panel is rotated to start the device;
and 4, step 4: the sine wave high-frequency oscillation booster circuit 3 is controlled to generate pulse high voltage through a discharge control button 5 on a control panel;
and 5: the electrode connecting rod and the discharge electrode simulate discharge.
In the specific implementation process, the power supply prompting lamp 6 on the rotary control panel is observed in the fault simulation process, when the fault color is displayed, the insulation gap is not punctured, and a large amount of residual charges exist on the discharge electrode and the electrode connecting rod; or, the device fails to generate pulse high voltage due to internal failure, and needs to be overhauled;
after the device was used, the discharge electrode of the device was subjected to discharge treatment using a ground rod.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. The utility model provides an electrical equipment discharge type fault simulation device, includes sine wave high frequency oscillation boost circuit (3), control panel, wireless transmission module (4), wireless remote control ware (8), electrode connecting rod, discharge electrode, its characterized in that:
the sine wave high-frequency oscillation boosting circuit (3) is used for generating 20-30kV pulse voltage;
the control panel is used for providing a human-computer interaction interface; controlling the working state of the display device; the wireless remote controller is matched with a wireless remote controller (8) to switch the wired and wireless working states of the device; controlling a sine wave high-frequency oscillation boosting circuit (3) to generate pulse high voltage;
the wireless remote controller (8) is used for generating a wireless control signal and carrying out remote control on the device discharge;
the wireless transmission module (4) is integrated in the device and is used for receiving a wireless control signal of a wireless remote controller (8);
the electrode connecting rod is used for generating discharge at different positions;
the discharge electrode is used for simulating different discharge types.
2. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the sine wave high-frequency oscillation booster circuit comprises a power supply, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4, a zener diode ZD1, a zener diode ZD2, a MOS transistor MOS1, a MOS transistor MOS2, an inductor L1, an inductor L2, an inductor L3, a capacitor C1, a capacitor C2 and a control switch S;
the inductor L2 and the inductor L3 are wound on the same magnetic core GTC;
the positive pole of the power supply is connected with one end of an inductor L1, the positive pole of the power supply is connected with one ends of a resistor R1 and a resistor R2 through a control switch S, and the other end of the inductor L1 is connected with the common end of an inductor L2 and an inductor L3;
the other end of the resistor R1 is connected with the anode of the diode D2, one end of the resistor R3, the anode of the zener diode ZD1 and the gate of the MOS transistor MOS 1;
the other end of the resistor R2 is connected with the anode of the diode D1, one end of the resistor R4, the anode of the zener diode ZD2 and the gate of the MOS transistor MOS 2;
the source electrodes of the MOS transistor MOS1 and the MOS transistor MOS2 are connected with the cathode of the power supply, and the other ends of the voltage stabilizing diode ZD1, the cathode of the voltage stabilizing diode ZD2, the resistor R3 and the resistor R4 are connected with the cathode of the power supply;
the cathode of the diode D1 is connected with the drains of the MOS tube MOS1 and the MOS tube MOS 2;
the cathode of the diode D2 is connected with the drain of the MOS tube MOS2, one end of the capacitor C1 and the capacitor C2 and the other end of the inductor L3;
the other ends of the capacitor C1 and the capacitor C2 are connected with the drain of the MOS transistor MOS1, the other ends of the capacitor C1 and the capacitor C2 and the other end of the inductor L2.
3. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the resistor R1 and the resistor R2 adopt a direct-insertion resistor with the resistance of 470R and the power of 2W;
the resistor R3 and the resistor R4 adopt 10k omega resistors;
the type of the diode D1 and the type of the diode D2 are UF 4007;
the type of the diodes D3 and D4 is IN 4742;
the MOS1 and MOS2 models are IRFP 250N;
the inductance of the inductor L1 is 80-100 uH;
the capacitance of the capacitor C1 and the capacitance of the capacitor C2 is 0.33 uF.
4. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the control panel comprises a power supply prompting lamp (6), a switch knob (7) and a discharge control button (5);
the power supply prompting lamp (6) displays different colors when the device is connected to 220V mains supply, works and has a fault, and prompts the working state of the device;
the switch knob (7) is used for controlling the device to be started and switching the wired and wireless working states of the device;
and the discharge control button (5) is used for controlling the sine wave high-frequency oscillation boosting circuit (3) to generate pulse high voltage.
5. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
by providing a plurality of electrode links of different lengths or electrode links of adjustable length, the discharge signal is generated at different positions.
6. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the bottom of the discharge connecting rod is connected with the device base through threads;
the top of the electrode connecting rod is connected with the discharge electrode through threads, and the discharge electrode can be replaced through the threads so as to simulate different discharge types.
7. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the discharge electrodes are divided into needle electrodes and circular plate electrodes, and needle-needle discharge, needle-plate discharge and plate-plate discharge can be simulated by combining the two electrodes.
8. The electrical equipment discharge-type fault simulation device of claim 1, wherein:
the electrode connecting rod and the discharge electrode connecting rod are made of copper.
9. An electric equipment discharge-type fault simulation method of an electric equipment discharge-type fault simulation apparatus according to any one of claims 1 to 8, characterized in that:
the method comprises the following steps:
step 1: setting an electrode connecting rod and a discharge electrode according to the discharge position and the discharge type;
step 2: the device is connected to 220V commercial power;
and step 3: a switch knob (7) on the control panel is rotated to start the device;
and 4, step 4: the sine wave high-frequency oscillation boosting circuit (3) is controlled to generate pulse high voltage through a discharge control button (5) on a control panel;
and 5: the electrode connecting rod and the discharge electrode simulate discharge.
10. The method for simulating the discharging fault of the electrical equipment according to claim 9, wherein the method comprises the following steps:
in the fault simulation process, a power supply prompting lamp (6) on the rotary control panel is observed, when the fault color is displayed, the insulation gap is not punctured, and a large amount of residual charges exist on the discharge electrode and the electrode connecting rod; or the inside of the device fails to generate pulse high voltage, and the device needs to be overhauled;
after the device was used, the discharge electrode of the device was subjected to discharge treatment using a ground rod.
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