US20220134356A1 - Apparatus and test method for simulating spark discharge of high-voltage electrostatic precipitator - Google Patents
Apparatus and test method for simulating spark discharge of high-voltage electrostatic precipitator Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/32—Checking the quality of the result or the well-functioning of the device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
Definitions
- the present invention relates to the field of spark discharge of electrostatic precipitators, and more particularly, to an apparatus and a test method for simulating spark discharge of a high-voltage electrostatic precipitator.
- High-voltage electrostatic precipitation is a frequently-used precipitation method in factories, and has advantages such as high precipitation efficiency and low energy consumption.
- most high-voltage electrostatic precipitators are excited by a direct current (DC) voltage superimposed with a narrow pulse, to improve their chargeability and precipitation efficiency.
- DC direct current
- the excessively high voltage will break down an electric field between the cathode and the anode of the precipitator, thereby causing spark discharge.
- the spark discharge not only causes an instantaneous drop of the voltage, but also leads the precipitator to lose the precipitation effect, thereby affecting statuses of a precipitation power supply and other devices.
- spark discharge can cause gas explosions and even serious safety accidents. Therefore, it is necessary to study characteristics of spark discharge of the high-voltage electrostatic precipitator to further improve the design of the precipitator and suppress possible spark discharge from the source when the precipitator works.
- the study of spark discharge of the high-voltage electrostatic precipitator mainly focuses on how to carry out intelligent control after spark discharge, to avoid re-discharge and reduce the sparking rate.
- spark discharge of the precipitator limited by a test condition, there are only a few relevant characteristics of spark discharge of the precipitator now. Since the high-voltage electrostatic precipitator is bulky, if a relevant test is performed directly on the precipitator, there are many inconveniences in wiring and measurement, and it is difficult to obtain discharge signals of all positions during spark discharge, causing potential safety hazards.
- the present invention provides an apparatus and test method for simulating spark discharge of a high-voltage electrostatic precipitator, to resolve a problem that it is difficult to carry out a test and a relevant measurement when studying spark discharge of a high-voltage electrostatic precipitator.
- an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator includes:
- a pulse power supply configured to provide a test voltage
- a voltage divider configured to measure an electrode voltage
- a pulse capacitor unit including a first pulse capacitor configured to simulate a precipitation tube on which spark discharge occurs in a precipitator, and a second pulse capacitor configured to simulate a capacitor of another precipitation tube connected in parallel to the precipitation tube on which spark discharge occurs;
- a cathode rod configured to simulate a cathode of the precipitator, where one end of the cathode rod is connected to the metal bar, and the other end of the cathode rod is placed in an anode cylinder configured to simulate an anode of the precipitator;
- a grounded current sampling unit configured to measure grounded current
- a high-voltage end of the pulse power supply, a high-voltage end of the voltage divider, a high-voltage end of the first pulse capacitor and a high-voltage end of the second pulse capacitor are successively connected, and then the high-voltage end of the second pulse capacitor is connected to the metal bar; a grounded end of the voltage divider is connected to a grounded end of the first pulse capacitor; a grounded end of the pulse power supply, the grounded end of the first pulse capacitor and the anode cylinder are connected to a grounded point of a test site through the grounded current sampling unit; and a grounded end of the second pulse capacitor is connected to the grounded point of the test site.
- a part of the cathode rod located in the anode cylinder has a burr.
- the bottom of the cathode rod is provided with a counterweight configured to maintain the cathode rod to be vertically disposed.
- the anode cylinder has a regular prism structure, and the anode cylinder and the cathode rod are coaxially disposed.
- the bottom of the anode cylinder is provided with another counterweight configured to maintain the anode cylinder to be vertically disposed.
- the pulse power supply is identical to a pulse power supply used by the precipitator.
- the grounded current sampling unit includes three non-inductive resistors with an identical parameter, where the grounded end of the pulse power supply, the grounded end of the first pulse capacitor, and the anode cylinder are connected to the grounded point of the test site through one non-inductive resistor, respectively.
- the apparatus for simulating spark discharge of a high-voltage electrostatic precipitator is used to carry out a simulation test, and a test method includes:
- the oscilloscope records a waveform u(t) of a voltage of the two ends of the grounded current sampling unit and a waveform u 2 (t) of a voltage output by the voltage divider;
- the present invention simulates spark discharge of the high-voltage electrostatic precipitator in a laboratory by using an equivalent capacitance.
- the test apparatus in the present invention is structurally simple, occupies small space, and facilitates measurement. In practice, anodes of various discharge tubes of the high-voltage electrostatic precipitator are in close contact, which makes it difficult to perform measurement separately.
- two pulse capacitors are disposed to measure and analyze discharge energy output by the precipitation tube on which spark discharge occurs, a tube precipitation tube without spark discharge, the pulse power supply, and other branches.
- the simulation test apparatus provided in the present invention can select, based on an actual situation, a corresponding pulse capacitor for equivalence, and can be applied to simulation of different types of high-voltage electrostatic precipitators. According to the test apparatus and the test method provided in the present invention, electrical characteristics of spark discharge of the high-voltage electrostatic precipitator can be further studied.
- FIG. 1 is a schematic structural diagram of an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a circuit of an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator according to an embodiment of the present invention
- FIG. 3 is an oscilloscope with four channels.
- An equivalent test model is constructed in a laboratory to realize equivalent electrical characteristics of an electrostatic precipitator. In this way, space required for a test can be reduced, and a monitoring point can be flexibly disposed based on an actual need, to facilitate in-depth research on discharge energy, a source, discharge current, and other characteristics of spark discharge of the precipitator.
- an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator includes a pulse power supply 1 configured to provide a test voltage, a voltage divider 2 configured to measure an electrode voltage, a pulse capacitor unit configured to simulate an electrode capacitor of a precipitator, a cathode rod 5 configured to simulate a cathode of the precipitator, an anode cylinder 6 configured to simulate an anode of the precipitator, a metal bar configured to hang the cathode rod 5 , an insulating support 7 configured to support the metal bar 4 , and a grounded current sampling unit 8 configured to measure the grounded current.
- the insulating support 7 is configured to support the metal bar 4 and the cathode rod 5 hung on the metal bar 4 .
- the tops of left and right parts of the insulating support 7 are securely connected to two ends of the metal bar 4 respectively to form a door-shaped support structure.
- a hanging point is disposed in the middle of the metal bar 4 to hang the cathode rod 5 .
- the cathode rod 5 is provided with a burr 10 . When the cathode rod 5 is 1.6 m long, the burr 10 can be installed within 1 m of a lower part of the cathode rod 5 .
- the bottom of the cathode rod 5 is provided with a counterweight 11 to ensure that the cathode rod 5 is vertically disposed.
- the cathode rod 5 is hung on the metal bar 4 and then extends into the anode cylinder 6 .
- the burr 10 on the cathode rod 5 is located within the anode cylinder 6 .
- the anode cylinder 6 has a regular prism structure, and another counterweight 12 is welded at the bottom to avoid dumping.
- the anode cylinder 6 and the cathode rod 5 are coaxially disposed.
- the pulse power supply 1 is identical to a pulse power supply used by the precipitator, to ensure consistent power excitation between the simulation apparatus in the present invention and the precipitator.
- the pulse capacitor unit includes a first pulse capacitor 301 and a second pulse capacitor 302 .
- the first pulse capacitor 301 is configured to simulate a precipitation tube on which spark discharge occurs in the precipitator
- the second pulse capacitor 302 is configured to simulate a capacitor of another precipitation tube connected in parallel to the precipitation tube on which spark discharge occurs.
- the grounded current sampling unit 8 includes three non-inductive resistors 801 , 802 , and 803 with an identical parameter, and a resistance value may be 0.1 ⁇ .
- a high-voltage end of the pulse power supply 1 , a high-voltage end of the voltage divider 2 , a high-voltage end of the first pulse capacitor 301 and a high-voltage end of the second pulse capacitor 302 are successively connected, and then the high-voltage end of the second pulse capacitor 302 is connected to the metal bar 4 .
- a grounded end of the voltage divider 2 . is connected to a grounded end of the first pulse capacitor 301 by using an insulated wire, the grounded end of the first pulse capacitor 301 is further connected to the non-inductive resistor 802 by using an insulated wire, and another end of the non-inductive resistor 802 is connected to a grounded point of test site 9 by using an insulated wire.
- a grounded end of the second pulse capacitor 302 is connected to the grounded point of the test site 9 by using an insulated wire.
- the anode cylinder 6 is connected to the non-inductive resistor 803 by using an insulated wire, and another end of the non-inductive resistor 803 is connected to the grounded point of test site 9 by using an insulated wire.
- a test method for simulating spark discharge of a high-voltage electrostatic precipitator is further provided, where a test is performed by using the above-mentioned apparatus for simulating spark discharge of a high-voltage electrostatic precipitator, and specific steps of the test are described below.
- Step 1 Measure a capacitance C 1 between the anode and the cathode of the precipitator, and a capacitance C 2 between the cathode rod 5 and the anode cylinder 6 ; calculate, based on a quantity of precipitation tubes n of the precipitator and a capacitance C D of the voltage divider 2 , a capacitance value of the first pulse capacitor 301 and a capacitance value of the second pulse capacitor 302 that are required for the test.
- Step 2 Connect the test loop based on a circuit shown in FIG. 2 .
- a discharge signal is measured by using an oscilloscope 13 , as shown in FIG. 3 , with more than four channels, where an output signal of the voltage divider 2 , a voltage signal of two ends of the non-inductive resistor 801 , a voltage signal of two ends of the non-inductive resistor 802 , and a voltage signal of two ends of the non-inductive resistor 803 are respectively connected to four channels 14 of the oscilloscope 13 .
- the pulse power supply 1 is connected to a corresponding power supply.
- Step 3 Based on the output signal of the voltage divider 2 , adjust the pulse power supply 1 , and increase an output voltage slowly until an obvious spark discharge sound is heard or a signal waveform in the oscilloscope 13 suddenly fluctuates greatly; then, decrease the output voltage of the pulse power supply 1 slowly until spark discharge is terminated, and record a voltage peak U 1 of the two ends of one non-inductive resistor by using the oscilloscope 13 .
- Step 4 Set a single trigger mode for the oscilloscope 13 , and adjust a trigger voltage to 2U 1 ; then, increase the output voltage of the pulse power supply 1 , so that when spark discharge occurs, the oscilloscope 13 is triggered and records a waveform of the voltage output by the voltage divider 2 and a waveform of the voltage of the two ends of each of the non-inductive resistors 801 , 802 , and 803 .
- Step 6 Analyze a characteristic of a discharge signal of each branch during the spark discharge based on the waveform u 2 (t) of the voltage output by the voltage divider 2 and recorded by the oscilloscope 13 and the waveform i(t) of the current of each of the non-inductive resistors 801 , 802 , and 803 .
- the present invention simulates characteristics of spark discharge of the precipitator under different load conditions. This is convenient for measurement, and is conducive to studying the characteristics and suppression measures of spark discharge of the high-voltage electrostatic precipitator.
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Abstract
Description
- This application is based upon and claims priority to Chinese Patent Application No. 202011188666.6, filed on Oct. 30, 2020, the entire contents of which are incorporated herein by reference.
- The present invention relates to the field of spark discharge of electrostatic precipitators, and more particularly, to an apparatus and a test method for simulating spark discharge of a high-voltage electrostatic precipitator.
- High-voltage electrostatic precipitation is a frequently-used precipitation method in factories, and has advantages such as high precipitation efficiency and low energy consumption. At present, most high-voltage electrostatic precipitators are excited by a direct current (DC) voltage superimposed with a narrow pulse, to improve their chargeability and precipitation efficiency. However, the excessively high voltage will break down an electric field between the cathode and the anode of the precipitator, thereby causing spark discharge. The spark discharge not only causes an instantaneous drop of the voltage, but also leads the precipitator to lose the precipitation effect, thereby affecting statuses of a precipitation power supply and other devices. When high-voltage electrostatic precipitation is performed for combustible gases such as coke oven gas, spark discharge can cause gas explosions and even serious safety accidents. Therefore, it is necessary to study characteristics of spark discharge of the high-voltage electrostatic precipitator to further improve the design of the precipitator and suppress possible spark discharge from the source when the precipitator works.
- At present, the study of spark discharge of the high-voltage electrostatic precipitator mainly focuses on how to carry out intelligent control after spark discharge, to avoid re-discharge and reduce the sparking rate. However, limited by a test condition, there are only a few relevant characteristics of spark discharge of the precipitator now. Since the high-voltage electrostatic precipitator is bulky, if a relevant test is performed directly on the precipitator, there are many inconveniences in wiring and measurement, and it is difficult to obtain discharge signals of all positions during spark discharge, causing potential safety hazards.
- The present invention provides an apparatus and test method for simulating spark discharge of a high-voltage electrostatic precipitator, to resolve a problem that it is difficult to carry out a test and a relevant measurement when studying spark discharge of a high-voltage electrostatic precipitator.
- According to one aspect of embodiments of the present invention, an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator includes:
- a pulse power supply, configured to provide a test voltage;
- a voltage divider, configured to measure an electrode voltage;
- a pulse capacitor unit, including a first pulse capacitor configured to simulate a precipitation tube on which spark discharge occurs in a precipitator, and a second pulse capacitor configured to simulate a capacitor of another precipitation tube connected in parallel to the precipitation tube on which spark discharge occurs;
- a metal bar, transversely disposed on an insulating support;
- a cathode rod, configured to simulate a cathode of the precipitator, where one end of the cathode rod is connected to the metal bar, and the other end of the cathode rod is placed in an anode cylinder configured to simulate an anode of the precipitator; and
- a grounded current sampling unit, configured to measure grounded current; where
- a high-voltage end of the pulse power supply, a high-voltage end of the voltage divider, a high-voltage end of the first pulse capacitor and a high-voltage end of the second pulse capacitor are successively connected, and then the high-voltage end of the second pulse capacitor is connected to the metal bar; a grounded end of the voltage divider is connected to a grounded end of the first pulse capacitor; a grounded end of the pulse power supply, the grounded end of the first pulse capacitor and the anode cylinder are connected to a grounded point of a test site through the grounded current sampling unit; and a grounded end of the second pulse capacitor is connected to the grounded point of the test site.
- In some embodiments, a part of the cathode rod located in the anode cylinder has a burr.
- In some embodiments, the bottom of the cathode rod is provided with a counterweight configured to maintain the cathode rod to be vertically disposed.
- In some embodiments, the anode cylinder has a regular prism structure, and the anode cylinder and the cathode rod are coaxially disposed.
- In some embodiments, the bottom of the anode cylinder is provided with another counterweight configured to maintain the anode cylinder to be vertically disposed.
- In some embodiments, the pulse power supply is identical to a pulse power supply used by the precipitator.
- In some embodiments, the grounded current sampling unit includes three non-inductive resistors with an identical parameter, where the grounded end of the pulse power supply, the grounded end of the first pulse capacitor, and the anode cylinder are connected to the grounded point of the test site through one non-inductive resistor, respectively.
- According to another aspect of the embodiments of the present invention, the apparatus for simulating spark discharge of a high-voltage electrostatic precipitator is used to carry out a simulation test, and a test method includes:
- measuring a capacitance C1 between the anode and the cathode of the precipitator and a capacitance C2 between the cathode rod and the anode cylinder, respectively calculating, based on a quantity of precipitation tubes n of the precipitator and a capacitance CD of the voltage divider, a capacitance value of the first pulse capacitor and a capacitance value of the second pulse capacitor that are required for the test, and connecting the first pulse capacitor and the second pulse capacitor with the corresponding capacitance values to the apparatus for simulating spark discharge of the high-voltage electrostatic precipitator;
- measuring a discharge signal by using an oscilloscope, where an output signal of the voltage divider and a voltage signal of two ends of the power grounded current sampling unit are connected to channels of the oscilloscope, respectively;
- connecting the pulse power supply to a power supply, increasing an output voltage of the pulse power supply until spark discharge occurs, then decreasing the output voltage of the pulse power supply until spark discharge is terminated, and recording a voltage peak U1 of the two ends of the grounded current sampling unit by using the oscilloscope;
- setting a single rising edge trigger mode for the oscilloscope, adjusting a trigger voltage to 2U1, and then increasing the output voltage of the pulse power supply, so that when spark discharge occurs, the oscilloscope records a waveform u(t) of a voltage of the two ends of the grounded current sampling unit and a waveform u2(t) of a voltage output by the voltage divider;
- performing conversion on the waveform u(t) of the voltage of the two ends of the grounded current sampling unit recorded by the oscilloscope to obtain a waveform i(t) of a current flowing through the grounded current sampling unit; and
- analyzing a characteristic of the discharge signal during the spark discharge based on the waveform u2(t) of the voltage output by the voltage divider and recorded by the oscilloscope and the waveform i(t) of the current of the grounded current sampling unit.
- In some embodiments, the capacitance value of the first pulse capacitor is C301=C1×(n-1)/n-CD, and the capacitance value of the second pulse capacitor is C302=C1/n-C2.
- The present invention simulates spark discharge of the high-voltage electrostatic precipitator in a laboratory by using an equivalent capacitance. The test apparatus in the present invention is structurally simple, occupies small space, and facilitates measurement. In practice, anodes of various discharge tubes of the high-voltage electrostatic precipitator are in close contact, which makes it difficult to perform measurement separately. In the present invention, two pulse capacitors are disposed to measure and analyze discharge energy output by the precipitation tube on which spark discharge occurs, a tube precipitation tube without spark discharge, the pulse power supply, and other branches. In addition, the simulation test apparatus provided in the present invention can select, based on an actual situation, a corresponding pulse capacitor for equivalence, and can be applied to simulation of different types of high-voltage electrostatic precipitators. According to the test apparatus and the test method provided in the present invention, electrical characteristics of spark discharge of the high-voltage electrostatic precipitator can be further studied.
- In order to illustrate the technical solutions more clearly in the embodiments of the present invention, the accompanying drawings required for the embodiments will be briefly described below.
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FIG. 1 is a schematic structural diagram of an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator according to an embodiment of the present invention; -
FIG. 2 is a schematic structural diagram of a circuit of an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator according to an embodiment of the present invention; -
FIG. 3 is an oscilloscope with four channels. - An equivalent test model is constructed in a laboratory to realize equivalent electrical characteristics of an electrostatic precipitator. In this way, space required for a test can be reduced, and a monitoring point can be flexibly disposed based on an actual need, to facilitate in-depth research on discharge energy, a source, discharge current, and other characteristics of spark discharge of the precipitator.
- As shown in
FIG. 1 andFIG. 2 , an apparatus for simulating spark discharge of a high-voltage electrostatic precipitator includes apulse power supply 1 configured to provide a test voltage, avoltage divider 2 configured to measure an electrode voltage, a pulse capacitor unit configured to simulate an electrode capacitor of a precipitator, acathode rod 5 configured to simulate a cathode of the precipitator, ananode cylinder 6 configured to simulate an anode of the precipitator, a metal bar configured to hang thecathode rod 5, aninsulating support 7 configured to support themetal bar 4, and a groundedcurrent sampling unit 8 configured to measure the grounded current. - The
insulating support 7 is configured to support themetal bar 4 and thecathode rod 5 hung on themetal bar 4. The tops of left and right parts of theinsulating support 7 are securely connected to two ends of themetal bar 4 respectively to form a door-shaped support structure. A hanging point is disposed in the middle of themetal bar 4 to hang thecathode rod 5. Thecathode rod 5 is provided with aburr 10. When thecathode rod 5 is 1.6 m long, theburr 10 can be installed within 1 m of a lower part of thecathode rod 5. The bottom of thecathode rod 5 is provided with acounterweight 11 to ensure that thecathode rod 5 is vertically disposed. Thecathode rod 5 is hung on themetal bar 4 and then extends into theanode cylinder 6. Theburr 10 on thecathode rod 5 is located within theanode cylinder 6. Theanode cylinder 6 has a regular prism structure, and anothercounterweight 12 is welded at the bottom to avoid dumping. Theanode cylinder 6 and thecathode rod 5 are coaxially disposed. - The
pulse power supply 1 is identical to a pulse power supply used by the precipitator, to ensure consistent power excitation between the simulation apparatus in the present invention and the precipitator. The pulse capacitor unit includes afirst pulse capacitor 301 and asecond pulse capacitor 302. Thefirst pulse capacitor 301 is configured to simulate a precipitation tube on which spark discharge occurs in the precipitator, and thesecond pulse capacitor 302 is configured to simulate a capacitor of another precipitation tube connected in parallel to the precipitation tube on which spark discharge occurs. - The grounded
current sampling unit 8 includes threenon-inductive resistors - A high-voltage end of the
pulse power supply 1, a high-voltage end of thevoltage divider 2, a high-voltage end of thefirst pulse capacitor 301 and a high-voltage end of thesecond pulse capacitor 302 are successively connected, and then the high-voltage end of thesecond pulse capacitor 302 is connected to themetal bar 4. - A grounded end of the
voltage divider 2. is connected to a grounded end of thefirst pulse capacitor 301 by using an insulated wire, the grounded end of thefirst pulse capacitor 301 is further connected to thenon-inductive resistor 802 by using an insulated wire, and another end of thenon-inductive resistor 802 is connected to a grounded point oftest site 9 by using an insulated wire. - A grounded end of the
second pulse capacitor 302 is connected to the grounded point of thetest site 9 by using an insulated wire. Theanode cylinder 6 is connected to thenon-inductive resistor 803 by using an insulated wire, and another end of thenon-inductive resistor 803 is connected to the grounded point oftest site 9 by using an insulated wire. - In an example embodiment, a test method for simulating spark discharge of a high-voltage electrostatic precipitator is further provided, where a test is performed by using the above-mentioned apparatus for simulating spark discharge of a high-voltage electrostatic precipitator, and specific steps of the test are described below.
- Step 1: Measure a capacitance C1 between the anode and the cathode of the precipitator, and a capacitance C2 between the
cathode rod 5 and theanode cylinder 6; calculate, based on a quantity of precipitation tubes n of the precipitator and a capacitance CD of thevoltage divider 2, a capacitance value of thefirst pulse capacitor 301 and a capacitance value of thesecond pulse capacitor 302 that are required for the test. A calculation method is as follows: The capacitance value of thefirst pulse capacitor 301 required for the test is C301=C1×(n-1)/n-CD, and the capacitance value of thesecond pulse capacitor 302 required for the test is C302=C1/n-C2. - Step 2: Connect the test loop based on a circuit shown in
FIG. 2 . A discharge signal is measured by using anoscilloscope 13, as shown inFIG. 3 , with more than four channels, where an output signal of thevoltage divider 2, a voltage signal of two ends of thenon-inductive resistor 801, a voltage signal of two ends of thenon-inductive resistor 802, and a voltage signal of two ends of thenon-inductive resistor 803 are respectively connected to fourchannels 14 of theoscilloscope 13. Thepulse power supply 1 is connected to a corresponding power supply. - Step 3: Based on the output signal of the
voltage divider 2, adjust thepulse power supply 1, and increase an output voltage slowly until an obvious spark discharge sound is heard or a signal waveform in theoscilloscope 13 suddenly fluctuates greatly; then, decrease the output voltage of thepulse power supply 1 slowly until spark discharge is terminated, and record a voltage peak U1 of the two ends of one non-inductive resistor by using theoscilloscope 13. - Step 4: Set a single trigger mode for the
oscilloscope 13, and adjust a trigger voltage to 2U1; then, increase the output voltage of thepulse power supply 1, so that when spark discharge occurs, theoscilloscope 13 is triggered and records a waveform of the voltage output by thevoltage divider 2 and a waveform of the voltage of the two ends of each of thenon-inductive resistors - Step 5: Perform conversion on the waveform u(t) of the voltage of the two ends of each of the
non-inductive resistors oscilloscope 13 to obtain a waveform i(t) of the current flowing through each of thenon-inductive resistors - Step 6: Analyze a characteristic of a discharge signal of each branch during the spark discharge based on the waveform u2(t) of the voltage output by the
voltage divider 2 and recorded by theoscilloscope 13 and the waveform i(t) of the current of each of thenon-inductive resistors - The present invention simulates characteristics of spark discharge of the precipitator under different load conditions. This is convenient for measurement, and is conducive to studying the characteristics and suppression measures of spark discharge of the high-voltage electrostatic precipitator.
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US11428748B2 (en) * | 2017-11-10 | 2022-08-30 | Mitsubishi Electric Corporation | System and method for testing power conversion device |
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CN114527730B (en) * | 2022-02-21 | 2024-07-05 | 福建龙净环保股份有限公司 | Simulation method and device for operation of high-voltage electric field of electric dust removal equipment |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1992113A (en) * | 1931-10-26 | 1935-02-19 | Int Precipitation Co | Electrical precipitating apparatus |
US2696572A (en) * | 1952-10-31 | 1954-12-07 | Bell Telephone Labor Inc | Pulse generating circuit |
US2962609A (en) * | 1954-12-27 | 1960-11-29 | Cons Electrodynamics Corp | Pulse generator |
US2948849A (en) * | 1957-06-27 | 1960-08-09 | Biddle Co James G | Method and apparatus for measuring apparent corona charge |
US3087091A (en) * | 1958-05-01 | 1963-04-23 | High Voltage Engineering Corp | Spark gap switch |
US3495379A (en) * | 1967-07-28 | 1970-02-17 | Cottrell Res Inc | Discharge electrode configuration |
US3836852A (en) * | 1968-05-03 | 1974-09-17 | H Ross | Solid-state high input impedance meter system |
US3611103A (en) * | 1968-07-29 | 1971-10-05 | Gulf Oil Corp | Capacitor charging and discharging control system |
US3505532A (en) * | 1969-04-25 | 1970-04-07 | Westinghouse Electric Corp | Pulse producing circuit |
US3818248A (en) * | 1971-05-24 | 1974-06-18 | Westinghouse Electric Corp | Serially connected semiconductor switching devices selectively connected for predetermined voltage blocking and rapid switching |
DE3522568A1 (en) * | 1985-06-24 | 1987-01-02 | Metallgesellschaft Ag | METHOD FOR OPERATING AN ELECTROFILTER |
SE8701367L (en) * | 1987-04-01 | 1988-10-02 | Flaekt Ab | PROCEDURE MAKES A VARIABLE CIRCULATION |
CN2034874U (en) * | 1988-05-26 | 1989-03-29 | 河北沧县科学研究实验所 | Power supply of high voltage electrostatic dust-remover |
SE500810E (en) * | 1993-01-29 | 2003-04-29 | Flaekt Ab | Ways of regulating power supply to an electrostatic dust separator |
US5542967A (en) * | 1994-10-06 | 1996-08-06 | Ponizovsky; Lazar Z. | High voltage electrical apparatus for removing ecologically noxious substances from gases |
US5923130A (en) * | 1996-10-31 | 1999-07-13 | Roman; Francisco | Repetitive and constant energy impulse current generator |
WO2000019609A1 (en) * | 1998-09-29 | 2000-04-06 | Siemens Aktiengesellschaft | Pulse generator for generating a voltage pulse and corresponding method |
US6224653B1 (en) * | 1998-12-29 | 2001-05-01 | Pulsatron Technology Corporation | Electrostatic method and means for removing contaminants from gases |
SE518282C2 (en) * | 2000-04-12 | 2002-09-17 | Alstom Switzerland Ltd | Ways to protect the DC generator from overvoltage in case of load failure |
BRPI0502637A (en) * | 2005-05-23 | 2007-01-23 | Jose Simoes Berthoud | Diagnostic channel for operating conditions and testing solutions for optimization of electrostatic precipitators |
US8216341B2 (en) * | 2008-11-12 | 2012-07-10 | Babcock & Wilcox Power Generation Group, Inc. | System and method for locating sparks in electrostatic precipitators |
CN201535968U (en) * | 2009-07-24 | 2010-07-28 | 赵绍兴 | Electrostatic dedusting experimental device |
US8521455B2 (en) * | 2010-06-14 | 2013-08-27 | King Fahd University Of Petroleum And Minerals | System and method for estimating corona power loss in a dust-loaded electrostatic precipitator |
EP3154702B1 (en) * | 2014-06-13 | 2021-07-21 | FLSmidth A/S | Controlling a high voltage power supply for an electrostatic precipitator |
CN104201930B (en) * | 2014-08-26 | 2016-08-24 | 江苏科技大学 | Electrostatic precipitation pulsed high-voltage origin system and high-voltage pulse circuit method for designing |
CN105004952B (en) * | 2015-07-20 | 2018-11-20 | 国电环境保护研究院有限公司 | Wet cottrell cathode is to tubular anode discharge uniformity test experimental bench |
CN104991146A (en) * | 2015-07-20 | 2015-10-21 | 国电环境保护研究院 | Wet-type electrostatic dust collector electrode assembly volt-ampere characteristic experiment table |
CN108722673A (en) * | 2018-07-18 | 2018-11-02 | 浙江佳环电子有限公司 | Load adjustable high frequency electric source debugging simulation electric field |
CN109283440B (en) * | 2018-09-18 | 2020-02-07 | 华北电力大学 | Negative pressure type simulation test analysis platform with controllable environmental conditions |
CN210444194U (en) * | 2019-02-13 | 2020-05-01 | 襄阳九鼎昊天环保设备有限公司 | High-voltage double-pulse superposed power supply for electrostatic dust collection |
CN111420807B (en) * | 2019-08-06 | 2022-06-24 | 义乌工商职业技术学院 | Control method of rapid protection system of electrostatic dust collector |
CN210775792U (en) * | 2019-09-11 | 2020-06-16 | 龙岩福净环保科技有限公司 | Circuit for simulating electric field for debugging electric dust removal high-voltage power supply |
-
2020
- 2020-10-30 CN CN202011188666.6A patent/CN112362989B/en active Active
-
2021
- 2021-09-06 US US17/467,302 patent/US11338302B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11428748B2 (en) * | 2017-11-10 | 2022-08-30 | Mitsubishi Electric Corporation | System and method for testing power conversion device |
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