CN102299619B - A kind of electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller - Google Patents
A kind of electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller Download PDFInfo
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Abstract
The invention provides a kind of electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller, belong to flexible direct current power transmission system electromagnetism Anti-interference Design field.Described device promotes the electromagnetism antijamming capability of each submodule of flexible direct current power transmission system, and versatility is good, makes each Control card of total system all can use this device, reduces system-wide expense.Means for anti-jamming to piezo-resistance, transient voltage suppressor diode (TVS), electrochemical capacitor, X electric capacity, the devices such as common mode inductance carry out type selecting targetedly, and parameter is mated, then concentrate in a module and encapsulate, module leaves two-way input port, two-way delivery outlet.Device of the present invention is encapsulated in a module by centralized for multiple device, and parameter matching is reasonable, and cumulative volume is little, and integrated level is high, dependable performance; Can be applicable on the power inlet of multiple circuit-board card, directly weld, install very convenient.
Description
Technical field
The invention belongs to flexible direct current power transmission system electromagnetism Anti-interference Design field, specifically relate to a kind of electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller.
Background technology
Transmit electricity different from the Traditional DC of the current source type converter based on natural commutation technology, Technology of HVDC based Voltage Source Converter is a kind of VSC-HVDC technology based on voltage source converter, controlled shutoff device and pulse-width modulation (PWM technology), and voltage source converter (voltage source converter is called for short VSC) is the Core equipment of flexible direct current power transmission system.This technology of transmission of electricity instantaneous realization can be gained merit and idle independent uneoupled control, can power, be easy to form MTDC transmission system without the need to communication between current conversion station to passive network.In addition, this technology of transmission of electricity can provide the Emergency Assistance of active power and reactive power simultaneously to system, has advantage improving in the stability of system and ability to transmit electricity etc.
Flexibly, the active power of transmission and reactive power can independently control, and the system cloud gray model of applicable middle low power for the control mode of flexible DC power transmission and operational mode, and existing 12 flexible DC power transmission engineerings are in operation at present.Generating electricity by way of merging two or more grid systems of the regenerative resource such as wind-force, solar energy of the very applicable different scales of technical and economic characteristic had for the flexible DC power transmission of convertor unit with VSC.The regenerative resource that voltage source converter can meet different scales is generated electricity by way of merging two or more grid systems demand, also meeting the requirement of safe, stable, the economical operation of whole electrical network, avoiding the adverse effect because adopting other power transmission modes to produce electrical network.
Because submodule controller is operated near high-power switch device, electromagnetic environment is severe, and the submodule controller electromagnetism interference protection measure of flexible direct current power transmission system is one of key technology of flexible DC power transmission engineering.The electromagnetism interference protection measure of controller board level, the various individual devices of general employing solves the anti-interference test of relevant electromagnetism, and various individual devices takes up room greatly, and the Selecting parameter of device is also wanted many-sided and considered.
Summary of the invention
The object of the invention is to provide a kind of electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller, object is the electromagnetism antijamming capability of each submodule of Lifting Modules blocking many level type flexible direct current power transmission system, seek a kind of general, directly can weld board level means for anti-jamming on circuit boards, make each Control card of total system all can use this device, and system-wide expense is economized most, the mentality of designing of device of the present invention can be used for instructing person skilled to improve the submodule electromagnetism antijamming capability of modular multilevel formula flexible direct current power transmission system efficiently.
For achieving the above object, the technical scheme taked of the present invention is as follows:
For an electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller, its improvements are that described means for anti-jamming comprises piezo-resistance RV, transient voltage suppressor diode TVS, electrochemical capacitor CE, safety electric capacity CX and common mode inductance L; Described safety electric capacity CX
1, connect with described common mode inductance L after piezo-resistance RV and transient voltage suppressor diode TVS parallel connection, then with electrochemical capacitor CE and safety electric capacity CX
2in parallel.
Another optimal technical scheme of the present invention is: described piezo-resistance RV, transient voltage suppressor diode TVS, electrochemical capacitor CE, safety electric capacity CX and common mode inductance L are encapsulated in a module, and package module is provided with two-way input port and two-way delivery outlet.
Design a method for electromagnetism means for anti-jamming as claimed in claim 1, its improvements are that described method comprises step:
Step one: electromagnetic anti-intrusion device part type selecting
Adopt surge immunity test to carry out type selecting to each device, type selecting standard is that device is tested by surge immunity;
Step 2: electromagnetic anti-intrusion device part parameter matching
Step 3: construction packages designs
Electromagnetic anti-intrusion device part is encapsulated in a module.
Another optimal technical scheme of the present invention is: described step one comprises:
1) selection of TVS:
TVS absorbs energy peak > 1500W;
2) selection of RV:
Piezo-resistance RV model is 220KD20;
3) selection of L:
Two wire circle differences of common mode inductance L, magnetic core is high frequency magnetic core;
4) selection of CE:
The capacity of electrochemical capacitor is greater than 100 μ F;
5) selection of CX:
Select the safety electric capacity of X grade.
An optimal technical scheme more of the present invention is: described step 2 comprises:
1) the operating voltage U of piezo-resistance RV and transient voltage suppressor diode TVS, U=1.2U
n, U
nfor late-class circuit plate supply power voltage, be 15Vdc.
2) the wire diameter Φ of common mode inductance L,
3) voltage of electrochemical capacitor CE is more than 3 times of normal working voltage, the X2 safety electric capacity of safety capacitance selection 0.1 μ F, withstand voltage 200VAC;
Wherein X
2be metal thin film capacitor, the peak pulse voltages allowed in application is 2.5kV.
Owing to have employed technique scheme, compared with prior art, the beneficial effect acquired by the present invention comprises:
1) flexible direct-current transmission valve submodule controller electromagnetism antijamming capability is improved
Piezo-resistance selected by means for anti-jamming, transient voltage suppressor diode (TVS), electrochemical capacitor, X electric capacity, the devices such as common mode inductance, by these devices after parameter matching, are encapsulated in a module, be arranged on the power inlet of the various board of flexible direct-current transmission valve submodule controller, the board of controller can be made by the anti-interference test of the conventional electromagnetic of highest level;
2) integrated form individual packages, integrated level is high, takies volume little
Multiple device is concentrated in a construction packages, by rational structural design, make device play maximum performance, make module have reliable thermal diffusivity, less volume simultaneously, and the advantage such as high integration;
3) each device parameters coupling rationally, dependable performance
Device of the present invention, before each device package, carries out various dependence test, makes main devices (as pressure cell, transient voltage suppressor diode and common mode inductance etc.) parameter matching reasonable;
4) there is good versatility, easy to install
Electromagnetism means for anti-jamming finally only leaves two-way input port, two-way delivery outlet, can be applied on the power inlet of multiple circuit-board card, and directly welding on circuit boards, is installed very convenient.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is electromagnetism means for anti-jamming integrated circuit schematic diagram;
Fig. 2 is the structural representation of electromagnetism means for anti-jamming;
Fig. 3 is surge ripple immunity experiment wiring block diagram;
Wherein: CX1, CX2 are safety electric capacity, X2 grade; RV is piezo-resistance; TVS is transient voltage suppressor diode; L is common mode inductance; CE is alminium electrolytic condenser; EUT is test product;
In Fig. 3, PNW2050 and CDN131/133 is Shanghai Empek Electromagnetism Technology Co., Ltd.'s product.
Embodiment
Below in conjunction with example, the present invention will be described in detail.
The present invention is for providing a kind of electromagnetism means for anti-jamming of modular multilevel formula flexible direct current power transmission system Neutron module controller, described device is encapsulated in a module by centralized for multiple device, module leaves two-way input port, two-way delivery outlet, in device, each device parameters coupling rationally, cumulative volume is little, and integrated level is high, dependable performance; Can be applicable on the power inlet of multiple circuit-board card, directly weld, install very convenient, the versatility that means for anti-jamming is good makes total system cost economize most.
The present invention has considered the anti-interference test event of multiple electromagnetism, various conventionally test comprises: lightning surge immunity to interference is tested, radiated immunity test, esd immunity is tested, and power frequency magnetic field noise immunity is tested, and pulse magnetic field immunity is tested, electrical Clusters immunity to interference test, voltage transient immunity to interference, the noise immunity test of Voltage Drop, short interruptions and voltage gradient, the anti-winding degree test of radio-frequency (RF) magnetic field radiation and Conducted Radio Frequency Immunity test.Multiple electromagnetic anti-intrusion device part concentrates design in a module by electromagnetism means for anti-jamming, and board can easier be tested by conventional electromagnetism anti-interference.And device has stronger versatility, there is volume little, integrated level advantages of higher simultaneously.
For meeting foregoing invention object, the main technical point solved is needed to comprise: the selection of electromagnetic anti-intrusion device part, centralized model structural design and encapsulation.
(1) electromagnetic anti-intrusion device part type selecting
For modular multi-level flexible direct-current transmission system sub-modules controller electromagnetism Anti jamming Scheme, multiple electromagnetic anti-intrusion device part is concentrated in a construction packages.Consider the anti-interference testing scheme of multiple conventional electromagnetic, mainly comprise in module of the present invention: piezo-resistance, transient voltage suppressor diode (TVS), electrochemical capacitor, X electric capacity, common mode inductance.
The Selecting parameter of various device, and the parameter matching between each device is all one of technology of emphasis of the present invention solution.
(2) centralized model structural design and encapsulation
Being concentrated on by multiple device in a construction packages, is another technology point that the present invention needs emphasis to solve.By rational structural design, make device play maximum performance, make module have reliable thermal diffusivity, less volume simultaneously, and the advantage such as high integration.
Centralized electromagnetism means for anti-jamming, needs to solve above technology point, is the key issue needing in this invention to solve.
Embodiment 1: electromagnetic anti-intrusion device part is selected
Surge immunity is tested, and its objective is to carry out the immunity to interference of inspection machine to the unidirectional transient state caused by the switching phenomenon in electrical network, the fault in electrical network and thunderbolt (directly or indirect stroke) with 1.2/50us (voltage)-8/20us (electric current) composite wave surge.
Surge immunity test method and winding diagram as shown in Figure 3:
Technical parameter selected by surge pulse module PNW2050 tests:
In experimentation, DC15V direct-current switch power supply output port (or 220V is by output port of isolating transformer) accesses interference signal generator, identical voltage is coupled out by coupled outside network C DN131/133, access equipment under test power input (EUT), wiring block diagram is as Fig. 3.
The selection of TVS: the TVS selected in the device of initial exploitation is SMBJ18CA, endergonic peak value is 600W, is punctured, burns doing surge test, cannot pass through surge test.Then change to SMCJ18CA, absorption energy peak is 1500W, have passed test smoothly.
The selection of RV: piezo-resistance has selected 220KD20, the i.e. piezo-resistance of 22V, by surge current 3000A.Select piezo-resistance in parallel with TVS, the common energy absorbing surge, if without this piezo-resistance, even if add the TVS of SMCJ18CA, so surge test can not be passed through.
The selection of L: select common mode inductance L to suppress common mode disturbances.And the number of turns of 2 of inductance L coils has certain difference, suppress differential mode interference according to this difference.
The selection of CE: the ripple that need suppress input power with slightly jumbo electrochemical capacitor.
The selection of CX: the safety electric capacity of X grade can more effective filtering input spike burr and its insulation property are better.
Finally in this device, have selected transient voltage suppressor diode (TVS), piezo-resistance, common mode inductance, electrochemical capacitor, X electric capacity.By these devices after parameter matching, be encapsulated in a module, be arranged on the power inlet of the various board of flexible direct-current transmission valve submodule controller, the board of controller can be made by the anti-interference test of the conventional electromagnetic of highest level.
Embodiment 2: electromagnetic anti-intrusion device part parameter matching
For the standard of the anti-interference test of various electromagnetism, the parameter matching of main devices needs to consider following content:
The operating voltage of piezo-resistance and transient voltage suppressor diode is selected to determine according to rear step voltage, and capacity is determined according to energy size in test, and TVS selects the SMBJ18CA of 1500W.The 220KD20 of piezo-resistance surge current 3000A.。
The selection of common mode inductance is mainly considered through-current capability and suppresses common mode disturbances.According to the wire diameter of the principle determination common mode inductance of every square millimeter of 5A.And select high-frequency magnetic core, so that can filtering High-frequency Interference.
Electrochemical capacitor, X electric capacity, its electric pressure is selected to determine according to real work voltage, selects the electric capacity of high capacitance as far as possible.Electrochemical capacitor voltage selects more than 3 times of normal working voltage.The X2 safety electric capacity of X capacitance selection 0.1uF, withstand voltage 200VAC.
Embodiment 3: construction packages designs
According to the electromagnetic anti-intrusion device part selected, be encapsulated in a module, finally only have two-way input port, two-way delivery outlet.Reduce volume as far as possible, improve integrated level.Final plastic packaging becomes a separate modular, is applied in the power inlet of the circuit-board card of controller, can directly weld on circuit boards.The structure chart of device is as Fig. 2.Its putting position must be placed according to the order of schematic diagram 1, and input first places a safety electric capacity CX1, piezo-resistance RV, TVS, common mode inductance L, electrochemical capacitor CE, safety electric capacity CX2 will place successively.
Invention describes the parameter request of each device in electromagnetism immunity module, selection method and structural design, novel in design, practicality is high, and other designer can be instructed to complete similar electromagnetism immunity module design by introduction of the present invention.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment is only illustrative, instead of the restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (1)
1. for an electromagnetism means for anti-jamming for flexible direct-current transmission valve submodule controller, it is characterized in that, described means for anti-jamming comprises piezo-resistance RV, transient voltage suppressor diode TVS, electrochemical capacitor CE, safety electric capacity CX and common mode inductance L; Safety electric capacity CX
1, connect with described common mode inductance L after piezo-resistance RV and transient voltage suppressor diode TVS parallel connection, then with electrochemical capacitor CE and safety electric capacity CX
2in parallel;
Described piezo-resistance RV, transient voltage suppressor diode TVS, electrochemical capacitor CE, safety electric capacity CX and common mode inductance
L is encapsulated in a module, and package module is provided with two-way input port and two-way delivery outlet;
The method designing described electromagnetism means for anti-jamming comprises step:
Step one: electromagnetic anti-intrusion device part type selecting,
Adopt surge immunity test to carry out type selecting to each device, type selecting standard is that device is tested by surge immunity;
Step 2: electromagnetic anti-intrusion device part parameter matching,
Step 3: construction packages designs,
Electromagnetic anti-intrusion device part is encapsulated in a module;
Described step one comprises:
1) selection of TVS: TVS absorbs energy peak >1500W;
2) selection of RV: piezo-resistance RV model is 220KD20;
3) selection of L: two wire circle differences of common mode inductance L, magnetic core is high frequency magnetic core;
4) selection of CE: the capacity of electrochemical capacitor is greater than 100 μ F;
5) selection of CX: the safety electric capacity selecting X grade;
Described step 2 comprises:
1) the operating voltage U of piezo-resistance RV and transient voltage suppressor diode TVS, U=1.2U
n, U
nfor late-class circuit plate supply power voltage, be 15Vdc;
2) the wire diameter Φ of common mode inductance L,
3) voltage of electrochemical capacitor CE is more than 3 times of normal working voltage, the X2 safety electric capacity of safety capacitance selection 0.1 μ F, withstand voltage 200VAC;
Wherein X
2be metal thin film capacitor, the peak pulse voltages allowed in application is 2.5kV.
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| CN102621416A (en) * | 2012-03-23 | 2012-08-01 | 上海市电力公司 | Surge noise immunity experimental system |
| CN103810831A (en) * | 2012-11-13 | 2014-05-21 | 中国科学院沈阳自动化研究所 | Data transmission device applied to power information acquisition |
| CN103051174B (en) * | 2012-12-07 | 2015-01-07 | 国网智能电网研究院 | High position energy-taking power supply device of submodule of MMC valve and realizing method thereof |
| CN103454464B (en) * | 2013-07-09 | 2016-05-18 | 华立科技股份有限公司 | A kind of anti-6KV surge circuit and power supply circuits of ammeter |
| WO2018001340A1 (en) * | 2016-06-29 | 2018-01-04 | 苏州宝时得电动工具有限公司 | Self-mobile device |
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| CN101794999A (en) * | 2009-12-31 | 2010-08-04 | 西安开容电子技术有限责任公司 | Transient state and stable state resisting combination interference power filter and design method thereof |
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| CN101794999A (en) * | 2009-12-31 | 2010-08-04 | 西安开容电子技术有限责任公司 | Transient state and stable state resisting combination interference power filter and design method thereof |
Non-Patent Citations (3)
| Title |
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| EMI滤波器与浪涌抑制技术的结合;王丽等;《电力系统通信》;20060710;第27卷(第165期);第52页第二栏,第3段及图7 * |
| 浪涌电压干扰及其抑制;黄华雨;《机械工程与自动化》;20100831(第4期);第193页第二栏 * |
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