CN104682549A - Intelligent large-power arc-less direct-current bus contact device (DCS) for semi-controlled device - Google Patents
Intelligent large-power arc-less direct-current bus contact device (DCS) for semi-controlled device Download PDFInfo
- Publication number
- CN104682549A CN104682549A CN201510067606.1A CN201510067606A CN104682549A CN 104682549 A CN104682549 A CN 104682549A CN 201510067606 A CN201510067606 A CN 201510067606A CN 104682549 A CN104682549 A CN 104682549A
- Authority
- CN
- China
- Prior art keywords
- switch
- power
- negative pole
- electric arc
- positive pole
- 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.)
- Granted
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides an intelligent large-power arc-less direct-current bus contact device (DCS) for a semi-controlled device. The DCS is characterized by consisting of a controller A, a mechanical main switch (contact switch) K, an electric and electronic main switch (contactless main switch) T1 and a dynamic reverse bias control circuit, wherein the dynamic reverse bias control circuit consists of a diode D, an electric and electronic control switch (contactless main switch) T2, a voltage source E and a capacitor C, the K and the T1 are connected in parallel to form current switch double channels and connected between a direct-current emergent power supply (E02) and a direct-current output load (OUT), and guarantee is provided through the intelligent control of the A. When the emergent power supply is started, the contactless switch channel is first turned on, and then, the mechanical switch channel is turned on. When the emergent power supply is closed, the mechanical switch channel is firstly turned off, and then, the contactless switch channel is turned off, so that electric arcs are prevented from being generated when the direct-current circuit is turned on/off on load. Through the timely conduction of the T2, the problem that the current cannot be turned on/off on load by the semi-controlled device T1 is solved.
Description
Technical field
This patent relates to high power DC field of switches, particularly relate to middle pressure (U > 500V) and high pressure (U > 1000V) high power DC field of switches, carry turn-off technique mainly for the arc protection technology of high power DC switch on and off moment and the direct current band of double control noncontacting switch.
Background technology
Well-known: all kinds of direct current mechanical switch (contact switch) is carried the moment before connecting at band and has been just all that the electric field breakdown air (ionization) that contact both end voltage is formed causes with carrying the electric arc that formed of moment disconnected, if the moment no-voltage of two ends, contact before connection and after disconnection, does not have electric arc generation.And in all kinds of DC power-supply system of rising in recent years, do not allow the load interrupting direct current supply (as subway in operation, rail and trolley bus, electric train, the inverter etc. of emergency power supply) more and more many, these loads are powered by DC supply (E01 in accompanying drawing) under normal circumstances, when DC supply has a power failure suddenly for some reason, then emergency power supply (E02 in accompanying drawing) power supply of must taking over job instantaneously continues to power to the load, and the moment before emergency power supply connection, entering of its main contacts, go out two ends and there is rated voltage, therefore its connection process produces serious electric arc unavoidably, in like manner, main contacts is when band carries disconnection emergency power supply (emergency), its two ends also can produce serious electric arc in disconnection moment because of the existence of voltage, cause serious accident for avoiding electric arc and damage switching device, switching device for direct current major loop break-make must consider arc extinguishing measure, this just causes DC switch equipment complex structure, bulky and cost improves greatly.After high-power electric and electronic switch (i.e. noncontacting switch) device and module are come out, the result that (cut-off) is stopping diffusion being turned off because its conducting is the result of diffusion, electric arc is not produced in its process, so people once attempted to adopt this type of noncontacting switch to replace all kinds of mechanical switch, but a large amount of losses that the work of electronic power switch high-power consistently online causes can form again serious hot hidden danger, to the safety of system equipment with reliably cause serious threat, and half control type noncontacting switch (thyristor class) can not be with a year shutoff direct current, the ability of the control pole withstand disturbance signal of full-control type noncontacting switch is poor, easily there is misoperation, influential system reliability and fail safe, therefore, electronic power switch cannot substitute contact switch and work online, high-power band carries the problem that break-make DC circuit becomes thorny in DC switch field always.
Summary of the invention
Problem solved by the invention is, there is provided a kind of without electric arc type high power DC bus contact device for a high power DC circuit band arc extinguishing difficult problem of carrying existing for break-make, the difficult problem that can not turn off direct current for half control type noncontacting switch again provides a kind of dynamically reverse bias circuit, half control type noncontacting switch is made to turn off direct current, also ensure that noncontacting switch passage only drops into or exit moment independent bearing load current and the not independent loaded current of other times at DC supply for emergency by Based Intelligent Control, its basic structure is: combine by mechanical switch (contact switch) and electronic power switch (noncontacting switch) binary channels forming direct current emergency power supply and export, be connected between direct current emergency power supply E02 and direct current output bus M+.
According to different choice and the usage of noncontacting switch in channel structure, half control (the control pole of noncontacting switch device only conducting is worked and inoperative to cut-off) can be divided into without electric arc type high power DC bus contact device, full control (the control pole of noncontacting switch can control conducting and also can control cut-off) and composite members (contactless main switch is half control type device and contactless control switch is full control type device) three types, described in this patent is that half control intelligent high-power is without electric arc DC bus contact device (" DCS " namely in accompanying drawing 3), it is characterized in that: by controller A, there is contact main switch K, contactless main switch T1 and dynamically reverse bias control circuit are formed, its dynamic reverse bias control circuit is by contactless control switch T2, voltage source E, electric capacity C and diode D is formed.Directly connect with the positive electrode bus (2M+) of DC supply for emergency E02 after the entering to hold of the positive pole of T1 and K main contacts is connected, the negative pole of T1 and K main contacts go out to hold, positive pole (M+) concurrent that the negative pole of T2, the positive pole of D and direct current export bus is connected, the negative pole of diode D connects the positive pole of electric capacity C and the negative pole of voltage source E, the positive pole of voltage source E connects the positive pole of T2, and the negative pole of C connects the negative pole (M-) that direct current exports bus.The control pole of T1 and T2 meets controller A, and A also connects the control coil of K, working power measuring instrument V and output loading.
The present invention utilizes noncontacting switch can avoid the hot hidden danger drawback of consistently online without the advantage of electric arc break-make, utilize the low advantage of contact switch online loaded current loss and avoid the drawback that its band carries break-make generation electric arc, by controlling to make the two make up for each other's deficiencies and learn from each other, closed after the main contacts of T1 first conducting when ensureing that DC supply for emergency drops into and K, when ensureing that DC supply for emergency exits, the main contacts of K first disconnects and ends after T1, T1 is only at the moment independent bearing electric current of on-off, namely the electric arc difficult problem that band carries break-make direct current is evaded, turn avoid T1 and continue the threat that independent bearing electric current causes hot accident risks, also make half control type noncontacting switch T1 can close broken belt by dynamic reverse bias control circui and carry DC circuit.
Implementing this patent makes direct current emergency power supply E02 in case of emergency can drop into without electric arc fast, exiting fast again, also avoiding hot hidden danger risk because avoiding the online operating mode of fully loaded heat of T1 without electric arc.
Accompanying drawing explanation
The DC power-supply system structure chart of Fig. 1 to be DC bus contact device be contact switch, the DCS configured in its DC power-supply system figure is contact switch type, and fatal defects is that K2 produces electric arc in make and break process.
The DC power-supply system structure chart of Fig. 2 to be DC bus contact device be noncontacting switch, the DCS configured in its DC power-supply system figure is noncontacting switch type, fatal defects is that online heating exists hot hidden danger, and existence can not turn off the problem such as direct current or easy misoperation.
Fig. 3 be half control intelligent high-power without electric arc DC bus contact device power system structure figure, the DCS configured in its DC power-supply system figure for half control intelligent high-power described in this patent is without electric arc DC bus contact device.
In figure: E01: DC supply, E02: direct current emergency power supply, DCS: DC bus contact device.
Embodiment
As shown in Figure 3, half control intelligent high-power without electric arc DC bus contact device DCS by controller A, have contact main switch K, contactless main switch T1 and dynamically reverse bias control circuit form, its dynamic reverse bias control circuit is made up of contactless control switch T2, voltage source E, electric capacity C and diode D.The positive pole of its T1 and K main contacts enter to hold and bus positive pole (2M+) concurrent of DC supply for emergency E02 is connected, the negative pole of T1 and K main contacts go out to hold, the negative pole of T2, the positive pole of diode D and positive pole (M+) concurrent that exports bus be connected, the negative pole of diode D is connected with the negative pole concurrent of the positive pole of electric capacity C, voltage source E, the positive pole of voltage source E connects the positive pole of contactless control switch T2, and the negative pole of C connects the negative pole (M-) of electric discharge bus.The control pole of T1 and T2 meets controller A, and A also connects the control coil of K, the measuring instrument V of DC supply E01 and output loading monitoring side.
Principle is sketched: under the monitor and forecast effect of controller A, when DC supply E01 is normal, the contact of K disconnects automatically, T1 and T2 automatic cut-off, DC load power are directly provided by DC supply E01; When monitoring power supply E01 all standing or abnormal failure signal, the automatic conducting of T1, T2 keep reliable cut-off automatically, automatically closed after T1 conducting (conducting of T1 makes before K junction closure without pressure reduction the contact of K, therefore it closes and does not produce electric arc), DC load power changes to be provided by E02 emergency power supply; When monitor bus or load fault (heavy overload or short circuit or other emergencies) or receive artificial input shut off power in emergency the signals such as instruction time, T1 keeps reliable conducting automatically, the contact of K disconnects automatically, and (now the contact of K is cut-off and is become no-voltage because of the conducting of T1 and cut-off, so produce without electric arc), then the automatic conducting of T2, dynamic reverse bias circuit works, and T1 enters voltage reverse biased state and automatic cut-off because of positive and negative electrode.
Described have contact main switch K, can be the common automatically controlled class mechanical switch not with arc-control device or energy storage class change over switch.
Described contactless main switch T1 and contactless control switch T2, refers to controllable silicon (SCR) class half control type (control pole and only play control action to conducting) power electronics original paper or module.
Described diode D can be various diode.
Described electric capacity C can be all kinds of storage capacitor.
Described reverse bias power supply E can be all kinds of storage battery or all kinds of voltage source.
The present invention can apply in the distribution or control loop needing band to carry break-make high power DC in various field, thus avoids electric arc to endanger and simplify DC switchgear.
The present invention is described by example, and those skilled in the art know, when not departing from the spirit and scope of this patent, can change or equivalence replacement to characteristic sum example of the present invention.Therefore, the present invention is not by the restriction of specific embodiment disclosed herein, as long as the embodiment being built with contact and contactless biswitch channel types in field of strong electricity for evading electric arc all belongs to protection scope of the present invention.
But, along with the progress of technology, under thinking of the present invention is guided, pass through the cooperation of other thinkings or technology, the present invention can be applied to solving in other special technique devices or design or improving more senior technology barriers, consider the shared technological progress that can promote more areas of technological progress thinking, be conducive to the overall situation of technological change and development, as long as therefore the problem solved is different from the present invention with range of application, even all applied mechanically thinking of the present invention, also abuse can not be considered as by the patentee.
Claims (8)
1. half control intelligent high-power is without electric arc DC bus contact device DCS, it is characterized in that: by controller A, have contact main switch (mechanical switch) K, contactless main switch (electronic power switch) T1 and dynamic reverse bias control circuit to form, its dynamic reverse bias control circuit is made up of contactless control switch (electronic power switch) T2, voltage source E, electric capacity C and diode D, under normal band carries operating mode, bearing power is provided by DC supply E01, the contact of K disconnects automatically, T1 and T2 automatic cut-off; During E01 fault outage, the contact of the automatic conducting of T1, K automatically closes after T1 conducting, direct current emergency power supply E02 takes over E01 instantaneously and powers to the load (T1 can end, also can continue conducting around here), during as system stop command or load faulty signal, the main contacts of K disconnects automatically when the reliable conducting of T1, the automatic conducting of T2 afterwards, T1 enters reverse biased state because of T2 conducting to be ended immediately, and emergency power supply E02 exits without electric arc.
2. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, it is characterized in that: contactless main switch T1, specially refer to half control type power electronic device or module (SCR class) in the present invention, its positive pole and K main contacts enter to hold and positive electrode bus (2M+) concurrent of direct current emergency power supply (E02) is connected, its negative pole and K main contacts go out to hold, the negative pole of T2, the positive pole of D and power supply buses positive pole (M+) concurrent be connected, it controls pole connection control device A.
3. half control according to claim 1 is intelligent without electric arc high power DC bus contact device DCS, it is characterized in that: have contact main switch K, it can be the common automatically controlled class mechanical switch without arc-control device, also can be energy storage class mechanical switch, the positive pole (2M+) entering termination direct current emergency power supply E02 bus of its main contacts, the negative pole going out termination T1 of its main contacts.
4. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, it is characterized in that: contactless control switch T2, special secondary school of the present invention refers to half control type power electronic device or module (SCR class), its positive pole connects the positive pole of E, its negative pole connects the negative pole of T1, and it controls pole connection control device A.
5. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, it is characterized in that: voltage source E, can be battery or all kinds of voltage source, its positive pole connects the positive pole of T2, and its negative pole is connected with the positive pole of C and the negative pole concurrent of D.
6. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, it is characterized in that: diode D, can be common or special diode, and the negative pole of its positive pole and T1, its negative pole is connected with the positive pole of C and the negative pole concurrent of E.
7. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, and it is characterized in that: electric capacity C, its positive pole connects the negative pole of diode D, and negative pole meets the negative pole M-of power supply buses.
8. half control intelligent high-power according to claim 1 is without electric arc DC bus contact device DCS, it is characterized in that, controller A, can be all kinds of single-chip microcomputer, all kinds of industrial computer, all kinds of Programmable Logic Controller or control instrument etc., also the function that the intellectual monitoring of rectifier or charger or inverter in working power system and controlling functions complete A can be used in situation with good conditionsi, its control line connects the coil of K, the control pole of T1 and T2, can also connect the relevant monitor and forecast instrument etc. of active and standby power-supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067606.1A CN104682549B (en) | 2015-02-06 | 2015-02-06 | Half control intelligent high-power contacts device without electric arc DC bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067606.1A CN104682549B (en) | 2015-02-06 | 2015-02-06 | Half control intelligent high-power contacts device without electric arc DC bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104682549A true CN104682549A (en) | 2015-06-03 |
| CN104682549B CN104682549B (en) | 2018-07-13 |
Family
ID=53317277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067606.1A Active CN104682549B (en) | 2015-02-06 | 2015-02-06 | Half control intelligent high-power contacts device without electric arc DC bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104682549B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854075A (en) * | 2010-05-27 | 2010-10-06 | Asco电力技术公司 | Arc extinguishing hybrid switch and switching method |
| CN101958573A (en) * | 2009-07-13 | 2011-01-26 | Asco电力技术公司 | Arc extinguishing mixed transfer switch and switch transferring method |
| CN102075008A (en) * | 2011-01-21 | 2011-05-25 | 大连理工大学 | Electro-mechanical mixed voltage sag compensation device |
| CN103701200A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Power supply selection module of electric appliance with automatic changeover switch |
-
2015
- 2015-02-06 CN CN201510067606.1A patent/CN104682549B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958573A (en) * | 2009-07-13 | 2011-01-26 | Asco电力技术公司 | Arc extinguishing mixed transfer switch and switch transferring method |
| CN101854075A (en) * | 2010-05-27 | 2010-10-06 | Asco电力技术公司 | Arc extinguishing hybrid switch and switching method |
| CN102075008A (en) * | 2011-01-21 | 2011-05-25 | 大连理工大学 | Electro-mechanical mixed voltage sag compensation device |
| CN103701200A (en) * | 2013-12-25 | 2014-04-02 | 施耐德万高（天津）电气设备有限公司 | Power supply selection module of electric appliance with automatic changeover switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104682549B (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6013565B2 (en) | Power switching device and power switching system | |
| CN103178486B (en) | A kind of dc circuit breaker and cutoff method thereof | |
| CN104065154A (en) | Frequency changer emergency power supply system | |
| CN201699472U (en) | Dual-power automatic switching circuit and isolating device thereof | |
| CN102709116B (en) | Alternating-current contactor in low-voltage alternating-current control circuit and control method of alternating-current contactor | |
| JP2022051909A (en) | Charge/discharge device and power supply switching system | |
| CN103944227A (en) | Online active inverter discharging system for transformer substation storage battery | |
| CN201674275U (en) | Double-power-source automatic switching loop | |
| CN202495802U (en) | Elevator emergency leveling power supply device with hybrid power supply of alternating current and direct current | |
| CN104638633B (en) | Composite members intelligent high-power contacts device without electric arc dc bus | |
| CN103390881A (en) | Intelligent protection circuit and method of unified power quality conditioner | |
| CN205029421U (en) | Power supply switching device | |
| CN204615386U (en) | Half control formula is without electric arc type high power DC bus contact device | |
| CN203312773U (en) | Connection control structure for photovoltaic inverter direct current side | |
| CN204304453U (en) | A kind of interlock protection structure of water-cooling type SVG equipment | |
| CN214255721U (en) | System based on diesel generator is high-voltage station-use stand-by power supply | |
| CN104682549A (en) | Intelligent large-power arc-less direct-current bus contact device (DCS) for semi-controlled device | |
| CN204615498U (en) | Combined type is without electric arc type high power DC bus contact device | |
| CN204578203U (en) | Fully-controlled type is without electric arc type high power DC bus contact device | |
| CN104716640A (en) | Full-control intelligent high-power non-arc direct current bus contact device | |
| CN104092281B (en) | A kind of exchange dual power supply switching method | |
| CN203674688U (en) | Unified electric energy quality controller protection system | |
| CN203722328U (en) | Apparatus capable of automatically switch power frequency electric supply in case of UPS own faults | |
| CN102842911A (en) | Mine-used dynamic reactive power compensation device | |
| CN107769195B (en) | Forced flow conversion type mechanical switch based on LC oscillation, device and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200326 Address after: 116039, 58, Xin Ping Street, Xin Zhai village, Ganjingzi District, Liaoning, Dalian Patentee after: GUOBIAO POWER SUPPLY GROUP Co.,Ltd. Address before: 116039, 58, Xin Ping Street, Xin Zhai village, Ganjingzi District, Liaoning, Dalian Patentee before: Sun Yibiao |
|
| TR01 | Transfer of patent right |