CN113466595A - Full-automatic nonlinear resistor type harmonic eliminator test system - Google Patents
Full-automatic nonlinear resistor type harmonic eliminator test system Download PDFInfo
- Publication number
- CN113466595A CN113466595A CN202110788180.4A CN202110788180A CN113466595A CN 113466595 A CN113466595 A CN 113466595A CN 202110788180 A CN202110788180 A CN 202110788180A CN 113466595 A CN113466595 A CN 113466595A
- Authority
- CN
- China
- Prior art keywords
- voltage
- eliminator
- test system
- full
- resonance eliminator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R27/08—Measuring resistance by measuring both voltage and current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a full-automatic nonlinear resistance resonance eliminator test system, which comprises an electronic voltage regulator, a step-up transformer, a measuring circuit, a resonance eliminator, a measurement and control unit, a signal isolation conversion module, a switching power supply, a main controller and a thermal printer, wherein the working process of the full-automatic nonlinear resistance resonance eliminator test system is as follows: the voltage output by the numerical control module passes through the resonance eliminator, the main controller automatically records the voltage and calculates the real-time resistance value of the resonance eliminator, and the printer automatically prints the voltage, the current and the resistance of the system. The full-automatic non-linear resistance type harmonic eliminator test system adopts a harmonic eliminator power frequency current-voltage parameter calibration method and combines a high-voltage sampling signal isolation conversion technology to carry out fault prediction on a harmonic eliminator in operation and draw a volt-ampere characteristic curve chart, and the test system adopts a sectional parameter variation measure to ensure that the harmonic eliminator still keeps the original volt-ampere characteristic in a normal working current section.
Description
Technical Field
The invention relates to the technical field of harmonic elimination device testing, in particular to a full-automatic nonlinear resistance type harmonic elimination device testing system.
Background
The resonance eliminator is a damping device for eliminating the resonance of a voltage transformer in a circuit, protects the circuit to prevent PT high-voltage fuse wires from being frequently fused, avoids causing grid faults, is essentially a high-capacity nonlinear resistor, protects the high-voltage fuse wires by inhibiting inrush current in a power grid, and increases the risk when workers maintain because the conventional system for carrying out professional test on the full-automatic nonlinear resistance type resonance eliminator is not comprehensive, so that the quality of the resonance eliminator cannot be guaranteed, the power grid equipment cannot be safely operated easily due to the quality factor of the resonance eliminator, the reliability of the resonance eliminator after installation is increased by testing the full-automatic nonlinear resistance type resonance eliminator before installation and use, meanwhile, the fault eliminator can be known in advance, the fault elimination after the installation of the resonance eliminator is facilitated, and the fault elimination efficiency is enhanced, so that the fast recovery of the power grid is facilitated, the normal electricity utilization of residents and the normal operation of electric equipment are guaranteed.
However, the existing full-automatic nonlinear resistance type resonance eliminator test system has the following problems:
the fault prediction capability of the system to the harmonic eliminator in different operating environments needs to be enhanced due to the fact that the operating environments of the harmonic eliminator are different, the fault prediction capability of the existing full-automatic nonlinear resistance type harmonic eliminator testing system is insufficient, the use limitation of the system is increased, meanwhile, due to the fact that the harmonic eliminator is affected by overhigh voltage, the voltage at two ends of the harmonic eliminator needs to be limited, the limitation of the existing full-automatic nonlinear resistance type harmonic eliminator testing system to the voltage at two ends of the harmonic eliminator is insufficient, and the insulation protection of a neutral point is insufficient.
In order to solve the problems, innovative design is urgently needed on the basis of the original full-automatic nonlinear resistance type harmonic elimination device testing system.
Disclosure of Invention
The invention aims to provide a full-automatic nonlinear resistance resonance eliminator test system, which aims to solve the problems that the fault prediction capability of the full-automatic nonlinear resistance resonance eliminator test system is insufficient, the use limitation of the system is increased, and the limitation of the full-automatic nonlinear resistance resonance eliminator test system on the voltage at two ends of a resonance eliminator is insufficient, so that the insulation protection of a neutral point is insufficient.
In order to achieve the purpose, the invention provides the following technical scheme: full-automatic non-linear resistance type harmonic elimination ware test system, including electronic voltage regulator, step up transformer, measuring circuit, harmonic elimination ware, observing and controlling unit, signal isolation transform module, switching power supply, main control unit and thermal printer, full-automatic non-linear resistance type harmonic elimination ware test system's work flow is: the voltage output by the numerical control module passes through the resonance eliminator, the main controller automatically records the voltage and calculates the real-time resistance value of the resonance eliminator, and the printer automatically prints the voltage, the current and the resistance of the system.
Preferably, the main controller is composed of an ARM9 embedded chip, a WINCE operating system and a touch color screen, and the technologies used by the main controller are a PWM technology, an electronic voltage regulation technology and a process closed-loop control technology of a microcontroller.
Preferably, the base material of the resonance eliminator is SiC pressed by a large-tonnage press, and the structure design of the resonance eliminator is the structure design for improving the heat capacity.
Preferably, the technology of the signal isolation and conversion module is a high-voltage sampling signal isolation and conversion technology.
Preferably, the voltage of the switching power supply is 5V and 24V.
Preferably, the standard of the serial communication interface between the main controller and the thermal printer is RS-232.
Compared with the prior art, the invention has the beneficial effects that: the full-automatic nonlinear resistance type harmonic eliminator test system realizes automatic detection of the volt-ampere characteristics of the nonlinear resistance type harmonic eliminator at each point of 0.3mA, 0.5mA, 1mA, 3mA, 5mA and 10mA by adopting a harmonic eliminator power frequency current-voltage parameter calibration method and combining a high-voltage sampling signal isolation conversion technology, draws a volt-ampere characteristic curve chart while performing fault prediction on the operating harmonic eliminator, detects normality of the harmonic eliminator during operation, plays an important role in the aspects of equipment control, state maintenance field and fault prevention before the harmonic eliminator is put into operation, reduces the probability of safety accidents, provides basis for safe operation of power grid equipment, improves the equipment maintenance level, brings economic benefits, improves social benefits such as ensuring power transmission reliability and protecting the work safety of operation and maintenance personnel, and adopts sectional parameter-changing measures, the resonance eliminator still keeps the original volt-ampere characteristic in a normal working current section, so that the voltage at two ends of the resonance eliminator is effectively limited, and the neutral point insulation is further effectively protected.
Drawings
FIG. 1 is a schematic view of the flow structure of the present invention;
Detailed Description
The technical solutions in the drawings and the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: full-automatic non-linear resistance type harmonic elimination ware test system, including electronic voltage regulator, step up transformer, measuring circuit, harmonic elimination ware, observing and controlling unit, signal isolation transform module, switching power supply, main control unit and thermal printer, full-automatic non-linear resistance type harmonic elimination ware test system's work flow is: the voltage output by the numerical control module passes through the resonance eliminator, the main controller automatically records the voltage and calculates the real-time resistance value of the resonance eliminator, and the printer automatically prints the voltage, the current and the resistance of the system.
The main controller is composed of an ARM9 embedded chip, a WINCE operating system and a touch color screen, and the technology used by the main controller is the PWM technology, the electronic voltage regulation technology and the process closed-loop control technology of the microcontroller, so that a friendly human-computer interface is convenient to provide, the operation is convenient, the measurement automation, the test range width and the measurement accuracy of the test system are convenient to strengthen.
The base material of the resonance eliminator is SiC pressed by a large-tonnage press, and the resonance eliminator is structurally designed to improve the heat capacity, so that the resonance eliminator can normally work in outdoor severe weather for a long time.
The technology of the signal isolation and conversion module is high-voltage sampling signal isolation and conversion technology.
The voltage of the switching power supply is 5V and 24V, so that the main controller, the signal isolation conversion module and the thermal printer can be conveniently and simultaneously powered.
The standard of the serial communication interface between the main controller and the thermal printer is RS-232.
The working principle is as follows: when the full-automatic nonlinear resistance type resonance eliminator test system is used, firstly, as shown in figure 1, a current value is set according to requirements, meanwhile, the main controller adjusts the output voltage of the numerical control module according to the set current value, then when the current flowing through the resonance eliminator reaches the set current value, the main controller automatically records the output voltage, then the main controller calculates the real-time resistance value of the resonance eliminator according to the current and the voltage, after all the set current values are measured, the main controller transmits the recorded voltage, the recorded current value and the recorded resistance value to the printer, and the printer automatically prints the numerical value content, during the test, the inrush current and PT ferromagnetic resonance in the circuit are inhibited through the current limiting and damping action between the neutral point of the primary winding Y0 of the voltage transformer and the ground, meanwhile, the normal operation of the equipment is not influenced, and then, the resonance eliminator power frequency current-voltage parameter calibration method is combined with the high-voltage sampling signal isolation conversion technology, the volt-ampere characteristics of the nonlinear resistance type harmonic eliminator at each point of 0.3mA, 0.5mA, 1mA, 3mA, 5mA and 10mA are automatically detected, the capability of a system for predicting potential faults of the nonlinear resistance type harmonic eliminator in operation is enhanced, whether the harmonic eliminator normally works or not is verified, the voltage peak value or the effective value corresponding to each current peak value of the harmonic eliminator is automatically detected, the volt-ampere characteristic curve graph of the harmonic eliminator is intelligently drawn, the traditional test means of the nonlinear resistance type harmonic eliminator is innovated, and the compatibility and the expandability of all nonlinear resistance type harmonic eliminators on the market are fully considered, so that the basis is provided for the safe operation of power grid equipment, the equipment maintenance level is improved, the safety state detection and the fault analysis function of the nonlinear resistance type harmonic eliminator of a transformer substation are realized, and the purposes of equipment management standardization, informatization and scientification are achieved, meanwhile, the economic benefit and the social benefit are increased;
by adopting a sectional parameter-changing measure, a voltage control unit is provided, so that the resonance eliminator still maintains the original volt-ampere characteristic in a normal working current section, the voltage at two ends of the resonance eliminator is effectively limited, the voltage is limited below the insulation tolerance level of the weak insulation PT, and the neutral point insulation is further effectively protected.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. Full-automatic non-linear resistance type harmonic elimination ware test system, its characterized in that: the full-automatic non-linear resistance resonance eliminator testing system comprises an electronic voltage regulator, a step-up transformer, a measuring circuit, a resonance eliminator, a measurement and control unit, a signal isolation conversion module, a switching power supply, a main controller and a thermal printer, and the working flow of the full-automatic non-linear resistance resonance eliminator testing system is as follows: the voltage output by the numerical control module passes through the resonance eliminator, the main controller automatically records the voltage and calculates the real-time resistance value of the resonance eliminator, and the printer automatically prints the voltage, the current and the resistance of the system.
2. The fully automatic non-linear resistive resonator test system of claim 1, wherein: the main controller is composed of an ARM9 embedded chip, a WINCE operating system and a touch color screen, and the technology used by the main controller is a PWM technology, an electronic voltage regulation technology and a process closed-loop control technology of a microcontroller.
3. The fully automatic non-linear resistive resonator test system of claim 1, wherein: the base material of the resonance eliminator is SiC pressed by a large-tonnage press, and the structure design of the resonance eliminator is the structure design for improving the heat capacity.
4. The fully automatic non-linear resistive resonator test system of claim 1, wherein: the technology of the signal isolation and conversion module is high-voltage sampling signal isolation and conversion technology.
5. The fully automatic non-linear resistive resonator test system of claim 1, wherein: the voltage of the switching power supply is 5V and 24V.
6. The fully automatic non-linear resistive resonator test system of claim 1, wherein: the standard of a serial communication interface between the main controller and the thermal printer is RS-232.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788180.4A CN113466595A (en) | 2021-07-13 | 2021-07-13 | Full-automatic nonlinear resistor type harmonic eliminator test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788180.4A CN113466595A (en) | 2021-07-13 | 2021-07-13 | Full-automatic nonlinear resistor type harmonic eliminator test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113466595A true CN113466595A (en) | 2021-10-01 |
Family
ID=77880071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110788180.4A Pending CN113466595A (en) | 2021-07-13 | 2021-07-13 | Full-automatic nonlinear resistor type harmonic eliminator test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113466595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116131214A (en) * | 2023-04-18 | 2023-05-16 | 山东计保电气有限公司 | Network management system of digital harmonic elimination device and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721891A (en) * | 2012-07-04 | 2012-10-10 | 宁夏电力公司电力科学研究院 | Test device for non-liner resistor type resonance eliminator |
-
2021
- 2021-07-13 CN CN202110788180.4A patent/CN113466595A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721891A (en) * | 2012-07-04 | 2012-10-10 | 宁夏电力公司电力科学研究院 | Test device for non-liner resistor type resonance eliminator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116131214A (en) * | 2023-04-18 | 2023-05-16 | 山东计保电气有限公司 | Network management system of digital harmonic elimination device and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105116296A (en) | Special fault indicator for high-voltage power transmission network cable line | |
| CN106168638B (en) | Method for realizing online monitoring of high-voltage parallel capacitor by using relay protection device | |
| CN201608534U (en) | Microprocessor control voltage-regulating type reactive automatic compensating device of electrified railway | |
| CN102508036A (en) | On-line remote monitoring method and device for pollution state of disk insulator | |
| CN106707030B (en) | Method and device for measuring ground impedance and power loss of distribution transformer | |
| CN105372540A (en) | Performance on-line monitoring device for power distribution switch cabinet lightning arrester and monitoring method thereof | |
| CN201740830U (en) | Surge protector thermal stability testing device | |
| CN113466595A (en) | Full-automatic nonlinear resistor type harmonic eliminator test system | |
| CN201663437U (en) | Overtemperature protection device of low voltage plug-in type bus | |
| CN211905534U (en) | Lightning arrester on-line monitoring remote transmission system | |
| CN201219194Y (en) | AC creepage protection circuit | |
| CN202548079U (en) | On-line remote monitoring device for dirty state of disc type insulator | |
| CN205657341U (en) | Low -voltage comprehensive distribution box | |
| CN201378176Y (en) | High-precision anti-interference excitation power supply for ground screen flaw comprehensively-diagnosing system in transformer substation | |
| CN205027858U (en) | Special fault indicator of high -tension transmission net cable run | |
| CN204189753U (en) | A kind of Intelligent fuse | |
| CN201289990Y (en) | Multifunctional low voltage distribution box | |
| CN210074873U (en) | Portable direct-current power supply system with insulation monitoring function | |
| CN203983955U (en) | Transformer neutral point is through circuit interrupter grounding device | |
| CN207518256U (en) | Triple negative ground voltage protections | |
| CN107769175B (en) | Method and device for judging overvoltage in power grid | |
| CN205507004U (en) | Insulating operating mode real -time detection early warning device of power cable in service | |
| CN110867831A (en) | Protective device for information motor | |
| CN206442111U (en) | A kind of intelligent lightning protection device | |
| CN212158676U (en) | NB-IOT-based security and protection electricity utilization monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211001 |