CN203217070U - An arrester resistive current source simulation system - Google Patents
An arrester resistive current source simulation system Download PDFInfo
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- CN203217070U CN203217070U CN 201320132841 CN201320132841U CN203217070U CN 203217070 U CN203217070 U CN 203217070U CN 201320132841 CN201320132841 CN 201320132841 CN 201320132841 U CN201320132841 U CN 201320132841U CN 203217070 U CN203217070 U CN 203217070U
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Abstract
本实用新型提供一种避雷器阻性电流源仿真系统，其特征在于，系统主要功能模块包括任务数据处理中心、数据交互处理接口模块、人机界面、光纤数据通信模块、同步控制测量模块、谐波电源模块、三角波脉冲电源模块、分压器模块、精密电流测量模块、可调精密电容模块、可调精密电阻模块，所述任务数据处理中心、人机界面和数据交互处理接口模块通过一计算控制平台完成，该计算控制平台的主机为一台工控电脑，配有光纤转换模块，工控电脑通过光纤转换模块分别连同步控制测量模块、精密电流测量模块、可调精密电容模块、可调精密电阻模块。本实用新型填补国内避雷器在线监测设备阻性电流校定的空白。
The utility model provides an arrester resistive current source simulation system, which is characterized in that the main functional modules of the system include a task data processing center, a data interaction processing interface module, a man-machine interface, an optical fiber data communication module, a synchronous control measurement module, a harmonic Power supply module, triangular wave pulse power supply module, voltage divider module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistance module, the task data processing center, man-machine interface and data interaction processing interface module are controlled by a calculation The platform is completed. The host of the computing control platform is an industrial control computer equipped with an optical fiber conversion module. The industrial control computer is connected to the synchronous control measurement module, the precision current measurement module, the adjustable precision capacitance module, and the adjustable precision resistance module through the fiber optic conversion module. . The utility model fills up the gap in the calibration of the resistive current of the on-line monitoring equipment of the domestic lightning arrester.
Description
Technical field
The utility model relates to electric system test simulation field, specifically a kind of arrester resistance current source analogue system.
Background technology
Lightning arrester is as the important overvoltage protection of ac high-voltage system, and its safe operation has very important significance to the safe operation of power equipment and even whole high-pressure system.
Because Zinc-Oxide Arrester has good nonlinear resistance property, so Zinc-Oxide Arrester inside is very close to each other.Just because of very close to each other, be subjected to the effect of Operation of Electric Systems voltage for a long time at normal valve block in service, and in make moist or the influence of factor such as overheated, thereby can cause the deterioration of valve block nonlinear resistance property.It is that current in resistance property under the normal voltage increases that this deterioration mainly shows, the increase of current in resistance property causes the increase of thermal value, the lightning arrester temperature inside rises, temperature rises and accelerates the aging of valve block, form vicious cycle, cause Zinc-Oxide Arrester to damage owing to overheated at last, may cause when serious to cause Explosion of on Arrester, cause large-area power-cuts, thereby bring serious economy loss.
Build dynamics along with China strengthens intelligent grid energetically, to such an extent as to intelligent substation on-line system demand sharply increases, wherein arrester on-line monitoring system is the intelligentized crucial monitoring system of intelligent substation.Particularly in recent years; various so-called lightning arrester on-line monitoring equipment have appearred in the home market; the function of its equipment, principle, monitoring variable is various differs; device name is multifarious especially; market is very chaotic, and the standard that shortage is relevant and equipment detect and estimate the quality of lightning arrester on-line monitoring equipment simultaneously.
Summary of the invention
The purpose of this utility model is: realize sameization of performance, the standardization of products for making lightning arrester on-line monitoring product; For lightning arrester operation field monitoring, monitoring running state, operational reliability etc. provide with reference to judging basis and guiding suggestion; Also give security for the reliable and stable operation of intelligent grid, the utility model proposes lightning arrester standard current in resistance property source analogue system in a kind of lightning arrester on-line monitoring equipment, this kind analogue system mainly is that the quality to lightning arrester on-line monitoring equipment detects and estimates; Guarantee sameization of lightning arrester on-line monitoring properties of product, the standardization of products simultaneously; Also provide a kind of test evaluation foundation for the on-the-spot monitoring running state performance of lightning arrester on-line monitoring product, operational reliability etc.The utility model is filled up the blank that domestic lightning arrester on-line monitoring equipment current in resistance property edits.
The technical solution of the utility model is: a kind of arrester resistance current source analogue system, it is characterized in that, system's main functional modules comprises the task data processing enter, data interaction Processing Interface module, man-machine interface, the fiber optic data communication module, the synchro control measurement module, the harmonic wave power module, the triangular pulse power module, the voltage divider module, the precision current measurement module, the adjustable precision capacitance module, the adjustable precision resistive module, described task data processing enter, man-machine interface and data interaction Processing Interface module are calculated the control platform by one and are finished, the main frame of this calculating control platform is an industrial PC, be furnished with fiber optic switching module, industrial PC by fiber optic switching module respectively together with step control survey module, the precision current measurement module, the adjustable precision capacitance module, the adjustable precision resistive module;
Described task data processing enter is used for being responsible for task data processing and the task scheduling management of other each several parts, monitors the ruuning situation of each module, realizes that the data command of each module is mutual, safeguards the normal operation of total system;
Described man-machine interface is used for being responsible for the graphical demonstration of data, the current waveform display module, and the user operates response, data query;
Described data interaction Processing Interface module, the related data that is used for the management total system, for each module in the system provides unified data communication interface, the reading and writing data command request of each module of responding system, guarantee to calculate the control platform and can correctly receive and dispatch each module data of processing efficiently, each module data read-write all is to finish by this data interaction Processing Interface module in the system; The data source that this module is mainly managed comprises harmonic wave power module data, triangular pulse power module data, adjustable precision capacitor's capacity control data, adjustable precision resistance control data, precision current measurement module data;
Described fiber optic data communication module is used for the isolated high-voltage signal and the order of related data process information is sent to harmonic wave power module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistive module; The fiber optic data communication module receives the packet that synchro control measurement module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistive module return, and the return data bag is transmitted to calculates the control platform and carry out the parsing of data;
Described synchro control measurement module, be used for being responsible for realizing synchro control harmonic wave power module and triangular pulse power module, be responsible for regulating the amplitude size of harmonic component signal amplitude size, overtone order, the adjusting triangular pulse deration of signal and adjusting triangular pulse signal simultaneously, realize that two kinds of power module output signals are with the identical width of cloth;
Capacity current under the capacity current and harmonic wave is provided providing under the power frequency described harmonic wave power module; Module can be regulated the voltage of power frequency and harmonic test or current amplitude size, combination of frequency relation, harmonic wave composition component separately, module also is used for the simulation different voltages of actual electric network or current status simultaneously, to reach the variable condition of arrester capacity current in the real simulation electrical network;
Described triangular pulse power module mainly for generation of the triangular pulse waveform of different amplitudes, frequency, is given the power supply of adjustable precision resistive module as signal source simultaneously;
Described voltage divider module offers arrester resistance current source analogue system mainly for generation of the PT reference voltage;
Described adjustable precision resistive module is mainly used in regulating producing required current in resistance property size in the analogue system of arrester resistance current source, and the resistance size adjustment realizes by calculating the control of control platform in its module;
Described adjustable precision capacitance module is mainly used in regulating producing required capacity current size in the analogue system of arrester resistance current source, and the capacitor's capacity size adjustment realizes by calculating the control of control platform in its module;
Described precision current measurement module is mainly used in accurately measuring the size of current in resistance property and capacity current in the analogue system of arrester resistance current source, simultaneously the current in resistance property, the capacity current value that measure is sent to and calculates the control platform and show.
The beneficial effects of the utility model are: arrester resistance current of the present utility model source analogue system has following advantage:
1) this system can carry out the precision calibration to current in resistance property measurement and the total current measurement of lightning arrester on-Line Monitor Device, this current source not only can carry out current in resistance property and measure under power supply is the situation of pure power frequency, and can under power supply contains the situation of harmonic wave and pulsating volage, carry out current in resistance property and measure, this current in resistance property source is science, more reasonable more;
2) described current in resistance property source, the voltage magnitude height of its harmonic wave can be up to 50kV, and the overtone order scope is wide, and number of times can be up to 50 times, and harmonic voltage amplitude and overtone order can be regulated automatically simultaneously;
3) described current in resistance property source, its pulse voltage use triangular wave as the pulse power, and its triangular pulse amplitude and width all can regulate according to the lightning arrester of different electric pressures, measurement wider;
4) described arrester resistance current source analogue system is supported IED61850 agreement and MODBUS agreement, has realized the dual output characteristics of digitizing and the simulated output of system, and output characteristics is flexible, with the external world communicate by letter be connected more convenient.
Description of drawings
Fig. 1 is the block diagram of system of the present utility model.
Fig. 2 is typical operation process flow diagram of the present utility model.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.Those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values are equally within the listed claims limited range of the application.
As shown in Figure 1, the arrester resistance current source analogue system that the utility model provides, its system function module comprise task data processing enter, data interaction Processing Interface module, man-machine interface, fiber optic data communication module, synchro control measurement module, harmonic wave power module, triangular pulse power module, voltage divider module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistive module.Described task data processing enter, man-machine interface and data interaction Processing Interface module are calculated the control platform by one and are finished, the main frame of this calculating control platform is an industrial PC, be furnished with fiber optic switching module, industrial PC by fiber optic switching module respectively together with step control survey module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistive module.
The task data processing enter is used for being responsible for task data processing and the task scheduling management of other each several parts, monitors the ruuning situation of each module, realizes that the data command of each module is mutual, safeguards the normal operation of total system;
Man-machine interface is used for being responsible for the graphical demonstration of data, the current waveform display module, and the user operates response, data query.Man-machine interface also comprises dynamic control demonstration and waveform module, test monitoring submodule, tests Harmonic Parameters display module, triangular wave parameter display module, synchro control display module;
Data interaction Processing Interface module, the related data that is used for the management total system, for each module in the system provides unified data communication interface, the reading and writing data command request of each module of responding system, guarantee to calculate the control platform and can correctly receive and dispatch each module data of processing efficiently, it all is to finish by this communication module that other each module reads and writes data, so both can realize the uniqueness of data source, can guarantee that also the read and write data interface of order of other each module is unified, the extensibility that is conducive to Hoisting System, the data source that this module is mainly managed comprises the harmonic wave power data, triangular pulse power module data, adjustable precision capacitor's capacity control data, adjustable precision resistance control data, precision current measurement module data, real-time data base, historical data base;
The fiber optic data communication module is used for the isolated high-voltage signal and the order of related data process information is sent to harmonic wave power module, precision current measurement module, adjustable accurate capacitance module, adjustable accurate resistive module.The fiber optic data communication module receives the packet that synchro control measurement module, precision current measurement module, adjustable precision capacitance module, adjustable precision resistive module return, and the return data bag is transmitted to calculates the control platform and carry out the parsing of data;
The synchro control measurement module, be used for being responsible for realizing synchro control harmonic wave power module and triangular pulse power module, be responsible for regulating the amplitude size of harmonic component signal amplitude size, overtone order, the adjusting triangular pulse deration of signal and adjusting triangular pulse signal simultaneously, thereby realize that two kinds of power module output signals are with the identical width of cloth;
Capacity current under the capacity current and harmonic wave is provided providing under the power frequency harmonic wave power module.Module can be regulated voltage (electric current) amplitude size, combination of frequency relation, the harmonic wave composition component of power frequency and harmonic test separately, module also is used for the simulation different voltages of actual electric network (current status) simultaneously, to reach the variable condition of arrester capacity current in the real simulation electrical network;
The triangular pulse power module mainly for generation of the triangular pulse waveform of different amplitudes, frequency, is given the power supply of adjustable precision resistive module as signal source simultaneously;
The voltage divider module offers arrester resistance current source analogue system mainly for generation of the PT reference voltage;
The adjustable precision resistive module is mainly used in regulating producing required current in resistance property size in the analogue system of arrester resistance current source, and the resistance size adjustment realizes by calculating the control of control platform in its module;
The adjustable precision capacitance module is mainly used in regulating producing required capacity current size in the analogue system of arrester resistance current source, and the capacitor's capacity size adjustment realizes by calculating the control of control platform in its module;
The precision current measurement module is mainly used in accurately measuring the size of current in resistance property and capacity current in the analogue system of arrester resistance current source, simultaneously the current in resistance property, the capacity current value that measure is sent to and calculates the control platform and show.
Synchro control measurement module, accurate adjustable resistance module, accurate tunable capacitor module are exported in the control information that the utility model calculating control platform calculates, and are that on-line monitoring equipment provides a precise and stable capacity current, current in resistance property changing value in the system with the assurance.After optimizing harmonic wave, the processing of triangular wave control strategy synchronously by its inside modules, the data that the synchro control measurement module is passed calculating control platform back export to harmonic wave power supply power module, triangular pulse power module, thereby realize regulating harmonic component and triangular pulse power supply component state, current in resistance property source adjustment module, precision current measurement module send capacity current value and the current in resistance property value that measures to calculating control platform then, calculate the control platform and make corresponding control and measurement according to the action command that returns, thereby form a closed loop acquisition control system.
Major function of the present utility model is as follows:
(1) regulates harmonic component amplitude and overtone order continuously automatically, thereby reach voltage in the true reappearance actual electric network, electric current variable condition;
(2) regulate triangular pulse amplitude and width continuously automatically;
(3) capacity current, current in resistance property value in the real-time synchronized measurement system;
(4) capacity current, current in resistance property value are passed back in real time and are carried out waveform drafting and demonstration on the computer control platform;
(5) the synchro control measurement module has harmonic wave power module and the accurate synchronization control function of triangular pulse power module; Bit function mutually with automatic measurement harmonic wave power module and triangular pulse power supply mould output waveform; Phase angle with automatic control harmonic wave power module and triangular pulse power supply mould output waveform; Have artificial intelligence fuzzy control function, regulate harmonic wave power supply component state and triangular pulse power supply component state by the automatically real-time synchro control of this function;
(6) system can realize long-range accurate control adjustable precision capacitance module, adjustable precision resistive module control capacittance and resistance value automatically;
(7) the statistical query function that the computer control platform can be flexible, practical, energy query display user appointed information records harmonic component and triangular pulse component under the various data modes, and can export to Excel form and Word account;
(8) system's supported protocol communication framework, as: IED61850 agreement and MODBUS agreement;
(9) system's capacity current and current in resistance property Measurement Resolution are: 0.000002uA.
The utility model proposes lightning arrester standard current in resistance property source analogue system in a kind of lightning arrester on-line monitoring equipment, this kind analogue system is the definition according to arrester resistance current, and the accuracy of the measurement of current in resistance property in the lightning arrester on-line monitoring equipment is estimated.The current in resistance property numerical range that this current in resistance property source analogue system can be measured is wide, the accuracy height, used instrument and equipment can carry out reliability and the accuracy that magnitude tracing guarantees equipment in this current source analogue system, thereby has reached the accuracy of measuring arrester resistance current.In industrial computer, realize the data processing, use software replace hardware, have conveniently and debug, save time and labor-saving advantage.
Domestic used arrester resistance current source can only (this situation power supply be pure power frequency supply under specific situation, no harmonic content) simulation current in resistance property, thereby carry out precision confirmation, but be in operation with lightning arrester in practical power systems, the electromagnetic environment complexity that it suffers, except the power-frequency voltage ripple, also has a large amount of harmonic voltages, and pulse voltage, these harmonic voltages and pulse voltage are bigger to the current in resistance property influence of lightning arrester, but harmonic voltage and pulse voltage situation can't be simulated in used current in resistance property source, and therefore measure the current in resistance property of lightning arrester in used current in resistance property source, has little significance.
Compare with present domestic used arrester resistance current source, the power supply situation of the simulation electric system that this current source can be actual covers wider arrester resistance current measurement range, and measuring method and means of testing be science more.
Use the method for operating of this analogue system shown in Fig. 2:
By resolving the packet that optic module is passed back, calculate according to the return measurement data packet analysis, the relevant control of synchro control measurement module parameter is set, the synchro control measurement module is the parameter of receiving that arranges, the synchro control measurement module is gathered the voltage of harmonic wave power module and triangular pulse power module synchronously, current signal, high-speed data processor in the synchro control measurement module is in conjunction with the voltage and current parameter that parameter and synchro control measurement module collect that arranges that receives, carry artificial intelligence FUZZY ALGORITHMS FOR CONTROL control harmonic wave power module by the synchro control measurement module, the triangular pulse power module, the adjustable precision capacitance module, the adjustable precision resistive module, thus realize adjusted in concert harmonic wave power module and triangular pulse power module output state signal.Equate when regulating harmonic wave power supply and triangular pulse power module output signal amplitude and phase place, then the synchro control measurement module will be controlled parameter and measurement parameter and pass back by optical fiber and calculate the control platform host, with this simultaneously, calculate control platform task data processing enter and regulate adjustable precision capacitance module, adjustable precision resistive module from motion tracking, capacity current and current in resistance property value in the top adjustment process of the real-time measurement of precision current measurement module, capacity current and current in resistance property Value Data are passed calculating control platform host back by optical fiber and are shown and the waveform drafting.More than be to finish a current in resistance property under the voltage magnitude to regulate, if realize that current in resistance property is regulated under a plurality of voltage magnitudes, then repeat to arrange above adjustment process.
The performance parameter of the utility model arrester resistance current source analogue system is as follows:
(1) current in resistance property measurement range: 0-100mA
(2) current in resistance property resolution: 5uA
(3) current in resistance property measuring error: ± (the 1%x measured value ± 1uA)
(4) capacity current measurement range: 0-100mA
(5) capacity current resolution: 5uA
(6) capacity current measuring error: ± (the 1%x measured value ± 1uA)
(7) three phase harmonic power supply, voltage: 10KV electric current: 3 A
(8) voltage divider frequency of operation: 50-1250Hz
(9) voltage divider dielectric loss; Tan σ≤0.02%
(10) voltage divider dielectric level: whole withstand voltage 3kV/1min
(11) voltage divider systematic measurement error :≤± 1%
(12) nominal operation input power supply: 380V ± 10% (three-phase), 50Hz
(13) the output number of phases: three-phase
(14) output voltage: 0-10KV
(15) rated capacity: 30kVA
(16) specified reference frequency output: 50～1050Hz, stepping 50Hz, eight kinds of harmonic frequencies make up entirely
(17) the power frequency 1min withstand voltage level of output major loop and subsidiary loop is: 3kV
(18) voltage measurement precision: 0.5 grade
Be embodiments of the invention only below, be not limited to the present invention, therefore within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
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| CN 201320132841 CN203217070U (en) | 2013-03-22 | 2013-03-22 | An arrester resistive current source simulation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207378A (en) * | 2013-03-22 | 2013-07-17 | 中国电力科学研究院 | Lightning arrester resistive current source simulation system |
| CN107578679A (en) * | 2017-08-07 | 2018-01-12 | 国网技术学院 | A kind of ultra-high voltage lightning arrester simulation training system |
| CN115308501A (en) * | 2021-12-13 | 2022-11-08 | 中国电力科学研究院有限公司 | Gap type controllable lightning arrester current equivalent test method and device |
-
2013
- 2013-03-22 CN CN 201320132841 patent/CN203217070U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207378A (en) * | 2013-03-22 | 2013-07-17 | 中国电力科学研究院 | Lightning arrester resistive current source simulation system |
| CN103207378B (en) * | 2013-03-22 | 2015-09-09 | 中国电力科学研究院 | A kind of arrester resistance current source analogue system |
| CN107578679A (en) * | 2017-08-07 | 2018-01-12 | 国网技术学院 | A kind of ultra-high voltage lightning arrester simulation training system |
| CN115308501A (en) * | 2021-12-13 | 2022-11-08 | 中国电力科学研究院有限公司 | Gap type controllable lightning arrester current equivalent test method and device |
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