CN104362644A - Ultra-high voltage power quality stabilizer - Google Patents
Ultra-high voltage power quality stabilizer Download PDFInfo
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- CN104362644A CN104362644A CN201410559430.7A CN201410559430A CN104362644A CN 104362644 A CN104362644 A CN 104362644A CN 201410559430 A CN201410559430 A CN 201410559430A CN 104362644 A CN104362644 A CN 104362644A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1878—Arrangements for adjusting, eliminating or compensating reactive power in networks using tap changing or phase shifting transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
An ultra-high-voltage power quality stabilizer comprises a magnetic-control reactor reactive compensation circuit and a magnetic-control reactor arc suppression circuit. The magnetic-control reactor reactive compensation circuit comprises a reactive power compensation control circuit and a magnetic-control reactor, and the magnetic-control reactor arc suppression circuit comprises an arc suppression control circuit and an arc suppression circuit. Collection of three-phase voltage and current in a reactive compensation system is realized, three-phase compensation susceptance is calculated, parameter detection and control of the reactive compensation are realized, response speed of the magnetic-control reactor retreating from operation is increased, resonance of the system is prevented, and capacitance current of a power grid is compensated when fault occurs to single-phase grounding.
Description
Technical field
The present invention relates to a kind of superhigh pressure electric energy steady quality field, a kind of magnet controlled reactor reactive power compensation circuit and crowbar circuit are particularly provided.
Background technology
In recent years, superhigh pressure, extra-high voltage grid put into operation in succession in a lot of area of China.Therefore, have higher requirement to the safe and stable operation of electrical network and the quality of power supply, the quality of the quality of power supply will be directly connected to the overall benefit of national economy.Improve safety operation level and the quality of power supply of electrical network, except electric network composition itself is wanted rationally, also must have advanced regulable control means.The formation of ultra high voltage or superhigh pressure bulk power grid and load variations aggravation, require that reactive power source adjustable is in a large number to adjust voltage, maintains System Reactive Power trend balance, Loss reducing, improve power supply reliability.
Patent documentation CN201410240161.8 provides the adjustable high voltage reactor of a kind of classification, and list of references Fig. 1 can find out, controlled reactor Working winding binding post A, X are directly connected with extra-high voltage grid bus.XK
1, XK
2..., XK
n-1, XK
nfor current limiting reactor, with controlled reactor controlled winding binding post a, x is connected in parallel.K
1, K
2..., K
n-1, K
nand TK
1, TK
2..., TK
n-1, TK
nbe respectively and be connected on isolating switch in controlled winding circuit and reverse parallel connection thyristor.Along with load by zero load to specified changed power, control anti-parallel thyristor conducting or cut-off regularly, thus change Working winding electric current, reach the object of sectional-regulated Working winding electric current.After turn on thyristors, be parallel to the breaker closing at two ends, bear the long-term short circuit current in loop, thyristor is out of service.And due to current limiting reactor XK
1, XK
2..., XK
n-1, XK
ncan only access by platform, thus this controlled reactor reactive power regulate be segmentation and can only be single the compensation carrying out reactive power.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of superhigh pressure electric energy steady quality device, it has magnet controlled reactor reactive power compensation circuit and magnet controlled reactor crowbar circuit.
Magnet controlled reactor reactive power compensation circuit comprises the control of reactive power compensating circuit and magnet controlled reactor, and control circuit can be divided into several large modules such as power supply, signal condition, signal are synchronous, thyristor triggering impulse amplification, display, operation.Signal-regulated kinase mainly realizes the functions such as three-phase voltage, three-phase current signal detection, conditioning.Its accuracy of detection and the compensation effect of real-time to system play an important role.Synchronous signal circuit is the hardware key component of whole controller.It, by the sampling interval value in zero passage detection periodic refreshing Signal-regulated kinase, makes collection and electrical network keep synchronous.IGBT group module mainly completes drive amplification, the isolation of start pulse signal, obtains thyristor required pulse signal.In order to the ruuning situation of real-time monitoring system in practical operation, need friendly man-machine system.Man-machine system is primarily of the display screen composition of the keyboard and feedback information that provide input.Man-machine system in Magnetically-controlreactor reactor control system needs the principle following interactivity and flexibility.Control system needs the collection realized the three-phase voltage in reactive compensation system and electric current; realize the calculating that three-phase compensates susceptance; realize solving of delay angle a; realize the generation of MCR Trig control signal; realize the integration to various feedback signal; the generation of guard signal, realizes the interface to PERCOM peripheral communication, realizes the driving to Signal aspects.
The four-column type structure that magnet controlled reactor adopts, is made up of two main iron cores and two return yokes.More easily reach capacity to make the magnetic permeability of two main iron core posts, the cross-sectional area of main iron core is less than the cross-sectional area of return yoke, and in the middle of each iron core column, there is a small bore section, magnetic pressure during work can be allowed like this to fall and to act predominantly on two main iron core posts.The both sides being enclosed within each iron core column that the winding of the identical number of turn of four DC control is symmetrical respectively, by different iron core upper and lower two windings intersect and to be connected to the grid again after connecting, carry out afterflow at infall cross-over connection diode D simultaneously.Each half iron core has a tapping ratio be the tap of N2/N, they are connected by thyristor Tl, T2.Wherein the middle loop that there is an exchange flux is respectively gripped on left iron core and left return yoke, right iron core and right side, loop in direct current flux is then present between two iron core column, a series connection resistance in diode continuousing flow loop, and at a resistance two ends parallel connection thyristor, utilize resistance to reduce the energy ezpenditure time of DC magnetic bias current, thus improve magnet controlled reactor response speed out of service.
Magnet controlled reactor crowbar circuit comprises extinguishing arc control circuit and crowbar circuit.Magnet controlled reactor crowbar circuit is when electric power system generation single phase ground fault, and the capacitance current of compensation network, when system is normally run, does not occur the factor (as resonance etc.) destroying system stability., in order to observe its running status preferably, and monitor it, crowbar circuit also must show parameters and ruuning situation thereof meanwhile, and upwards Primary Transmit or back up.Crowbar circuit control circuit is made up of parts such as the analysis and treament link of data acquisition system, data, the command system exporting control and executive components.Data acquisition system realizes the detection of voltage to neutral, arc suppression coil current signal by potential and current transformers, and data are passed to digital signal processor DSP, for the monitoring of crowbar circuit provides information; Data analysis and processing links have been come by dsp processor, and DSP judges whether single phase ground fault occurs according to the size of voltage signal; By the capacitive earth current of the phase calculation system of current signal; The data processed are passed to host computer, for display and monitoring; Export the command system controlled: DSP is according to the input of the signal controlling crowbar circuit of host computer or excision; Control crowbar circuit whether carry out current compensation according to whether there is earth fault, whether excise the damping resistance preventing resonance; The size of current of crowbar circuit when compensating is controlled according to calculated capacitance current; When system safety operation, send instructions to controlled reactor the swept technique capacitance current; According to corresponding requirement, control the sequencing that each performs link action; Executive component: comprise controlled reactor and damping resistance, controlled reactor is most important executive component, and afford redress during fault electric current, carries out capacitance detecting time normal; Damping resistance short circuit when fault, puts into operation time normal, prevents system resonance.
Crowbar circuit structure adopts and grounding transformer and arc suppression coil is united two into one, make pentastyle, middle three-limb core and the coil above it form the grounding transformer that Z-type connects, its three-phase lead-out wire A, B, C and electrical network connect, and neutral point N connects with both sides winding (arc suppression coil).Both sides iron core column is wound with the symmetric winding of upper and lower band tap, is connected in parallel to after upper and lower two the winding cross-join of different iron core between grounded neutral N and ground G, forms Controllable Arc-Suppression Coil System.Controlled thyristor Tl and T2 is connected to two taps in left and right respectively, and sustained diode is then across the centre at cross winding.The features such as arc suppression coil has compact conformation together with doing with grounding transformer, takes up an area and reduces, easy for installation, meanwhile, this arc suppression coil has good voltage-current characteristic, and Current adjustment haves a wide reach.
Accompanying drawing explanation
Fig. 1 is the adjustable superhigh pressure reactor of classification of the prior art.
Fig. 2 is magnet controlled reactor reactive power compensation circuit structure of the present invention.
Fig. 3 is magnet controlled reactor crowbar circuit structure of the present invention.
Embodiment
As shown in Figure 2, the four-column type structure that magnet controlled reactor adopts, is made up of two main iron cores and two return yokes.More easily reach capacity to make the magnetic permeability of two main iron core posts, the cross-sectional area of main iron core is less than the cross-sectional area of return yoke, and in the middle of each iron core column, there is a small bore section, magnetic pressure during work can be allowed like this to fall and to act predominantly on two main iron core posts.The both sides being enclosed within each iron core column that the winding of the identical number of turn of four DC control is symmetrical respectively, by different iron core upper and lower two windings intersect and to be connected to the grid again after connecting, carry out afterflow at infall cross-over connection diode D simultaneously.Each half iron core has a tapping ratio be the tap of N2/N, they are connected by thyristor Tl, T2.Wherein the middle loop that there is an exchange flux is respectively gripped on left iron core and left return yoke, right iron core and right side, loop in direct current flux is then present between two iron core column, a series connection resistance in diode continuousing flow loop, and at a resistance two ends parallel connection thyristor, utilize resistance to reduce the energy ezpenditure time of DC magnetic bias current, thus improve magnet controlled reactor response speed out of service.
Magnet controlled reactor reactive power compensation circuit comprises the control of reactive power compensating circuit and magnet controlled reactor, and control circuit can be divided into several large modules such as power supply, signal condition, signal are synchronous, thyristor triggering impulse amplification, display, operation.Signal-regulated kinase mainly realizes the functions such as three-phase voltage, three-phase current signal detection, conditioning.Its accuracy of detection and the compensation effect of real-time to system play an important role.Synchronous signal circuit is the hardware key component of whole controller.It, by the sampling interval value in zero passage detection periodic refreshing Signal-regulated kinase, makes collection and electrical network keep synchronous.IGBT group module mainly completes drive amplification, the isolation of start pulse signal, obtains thyristor required pulse signal.In order to the ruuning situation of real-time monitoring system in practical operation, need friendly man-machine system.Man-machine system is primarily of the display screen composition of the keyboard and feedback information that provide input.Man-machine system in Magnetically-controlreactor reactor control system needs the principle following interactivity and flexibility.Control system needs the collection realized the three-phase voltage in reactive compensation system and electric current; realize the calculating that three-phase compensates susceptance; realize solving of delay angle a; realize the generation of MCR Trig control signal; realize the integration to various feedback signal; the generation of guard signal, realizes the interface to PERCOM peripheral communication, realizes the driving to Signal aspects.
As shown in Figure 3, crowbar circuit structure adopts and grounding transformer and arc suppression coil is united two into one, make pentastyle, middle three-limb core and the coil above it form the grounding transformer that Z-type connects, its three-phase lead-out wire A, B, C and electrical network connect, and neutral point N connects with both sides winding (arc suppression coil).Both sides iron core column is wound with the symmetric winding of upper and lower band tap, is connected in parallel to after upper and lower two the winding cross-join of different iron core between grounded neutral N and ground G, forms Controllable Arc-Suppression Coil System.Controlled thyristor Tl and T2 is connected to two taps in left and right respectively, and sustained diode is then across the centre at cross winding.
Magnet controlled reactor crowbar circuit is when electric power system generation single phase ground fault, and the capacitance current of compensation network, when system is normally run, does not occur the factor (as resonance etc.) destroying system stability., in order to observe its running status preferably, and monitor it, crowbar circuit also must show parameters and ruuning situation thereof meanwhile, and upwards Primary Transmit or back up.Crowbar circuit control section is made up of parts such as the analysis and treament link of data acquisition system, data, the command system exporting control and executive components.Data acquisition system realizes the detection of voltage to neutral, arc suppression coil current signal by potential and current transformers, and data are passed to digital signal processor DSP, for the monitoring of crowbar circuit provides information; Data analysis and processing links have been come by dsp processor, and DSP judges whether single phase ground fault occurs according to the size of voltage signal; By the capacitive earth current of the phase calculation system of current signal; The data processed are passed to host computer, for display and monitoring; Export the command system controlled: DSP is according to the input of the signal controlling crowbar circuit of host computer or excision; Control crowbar circuit whether carry out current compensation according to whether there is earth fault, whether excise the damping resistance preventing resonance; The size of current of crowbar circuit when compensating is controlled according to calculated capacitance current; When system safety operation, send instructions to controlled reactor the swept technique capacitance current; According to corresponding requirement, control the sequencing that each performs link action; Executive component: comprise controlled reactor and damping resistance, controlled reactor is most important executive component, and afford redress during fault electric current, carries out capacitance detecting time normal; Damping resistance short circuit when fault, puts into operation time normal, prevents system resonance.
The foregoing is only of the present invention and be preferably not limited to the present invention, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (3)
1. a superhigh pressure electric energy steady quality device, it is characterized in that, comprise magnet controlled reactor reactive power compensation circuit and magnet controlled reactor crowbar circuit, magnet controlled reactor reactive power compensation circuit comprises the control of reactive power compensating circuit and magnet controlled reactor, and magnet controlled reactor crowbar circuit comprises extinguishing arc control circuit and crowbar circuit.
2. superhigh pressure electric energy steady quality device as claimed in claim 1, it is characterized in that, the control of reactive power compensating circuit has power module, Signal-regulated kinase, signal synchronization module, thyristor triggering impulse amplification module, human-computer interaction module, Signal-regulated kinase is to three-phase voltage, three-phase current signal detects, conditioning, signal synchronization circuit is by the sampling interval value in zero passage detection periodic refreshing Signal-regulated kinase, collection and electrical network is made to keep synchronous, thyristor triggering impulse amplification module completes the drive amplification of start pulse signal, isolation, obtain thyristor required pulse signal, human-computer interaction module is made up of the display screen of the keyboard and feedback information that provide input, the control of reactive power compensating circuit realiration is to the collection of the three-phase voltage in reactive compensation system and electric current, realize the calculating that three-phase compensates susceptance, realize solving of delay angle a, realize the generation of MCR Trig control signal, realize the integration to various feedback signal, the generation of guard signal, realize the interface to PERCOM peripheral communication, realize the driving to Signal aspects, the four-column type structure that magnet controlled reactor adopts, be made up of two main iron cores and two return yokes, the cross-sectional area of main iron core is less than the cross-sectional area of return yoke, and in the middle of each iron core column, there is a small bore section, the both sides being enclosed within each iron core column that the winding of the identical number of turn of four DC control is symmetrical respectively, by different iron core upper, lower two windings intersection is connected to the grid after connecting again, carry out afterflow at infall cross-over connection diode D simultaneously, each half iron core there is a tapping ratio be the tap of N2/N, they are by thyristor Tl, T2 connects, wherein left iron core and left return yoke, the middle loop that there is an exchange flux is respectively gripped on right iron core and right side, loop in direct current flux is then present between two iron core column, a series connection resistance in diode continuousing flow loop, and at a resistance two ends parallel connection thyristor.
3. superhigh pressure electric energy steady quality device as claimed in claim 2, it is characterized in that, extinguishing arc control circuit is made up of the analysis and treament link of data acquisition system, data, the command system exporting control and executive component, data acquisition system realizes the detection of voltage to neutral, arc suppression coil current signal by potential and current transformers, data are passed to digital signal processor, for the monitoring of crowbar circuit provides information, data analysis and processing links have been come by processor, and processor judges whether single phase ground fault occurs according to the size of voltage signal, by the capacitive earth current of the phase calculation system of current signal, the data processed are passed to host computer, for display and monitoring, exporting the command system controlled adopts DSP according to the input of the signal controlling crowbar circuit of host computer or excision, control crowbar circuit whether carry out current compensation according to whether there is earth fault, whether excise the damping resistance preventing resonance, the size of current of crowbar circuit when compensating is controlled according to calculated capacitance current, when system safety operation, send instructions to controlled reactor the swept technique capacitance current, according to corresponding requirement, control the sequencing that each performs link action, executive component: comprise controlled reactor and damping resistance, afford redress during controlled reactor fault electric current, carries out capacitance detecting time normal, damping resistance short circuit when fault, put into operation time normal, prevent system resonance, crowbar circuit adopts pentastyle, middle three-limb core and the coil above it form the grounding transformer that Z-type connects, three-phase lead-out wire A, B, C and electrical network connect, neutral point N connects with both sides winding, both sides iron core column is wound with, the symmetric winding of lower band tap, on different iron core, be connected in parallel between grounded neutral and ground after lower two winding cross-join, form Controllable Arc-Suppression Coil System, controlled thyristor Tl and T2 is connected to two taps in left and right respectively, sustained diode is then across the centre at cross winding.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185511A (en) * | 2015-11-06 | 2015-12-23 | 山东大学 | Three-phase saturation resistor capable of reducing bounded uncertainty |
| CN108832609A (en) * | 2018-07-11 | 2018-11-16 | 云南电网有限责任公司电力科学研究院 | A method of singlephase earth fault is solved based on turn-adjusting arc-extinguishing winding |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
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| JPH03222016A (en) * | 1990-01-26 | 1991-10-01 | Nissin Electric Co Ltd | Control system for reactive power compensator |
| CN201975795U (en) * | 2011-03-18 | 2011-09-14 | 鞍山市恒力电气设备制造有限公司 | Hybrid excitation triggering and double-core excitation winding MCR (Magnetically Controlled Reactor) |
| CN103178529A (en) * | 2013-04-03 | 2013-06-26 | 杭州银湖电气设备有限公司 | Phase-splitting control method and device of magnetic control type quick response dynamic reactive power compensation system |
| CN103310953A (en) * | 2013-05-21 | 2013-09-18 | 江苏宏安变压器有限公司 | Three-phase five-column arc extinction electric reactor |
| CN203339693U (en) * | 2013-06-09 | 2013-12-11 | 西安天虹电气有限公司 | Magnetic control arc extinguishing coil |
-
2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03222016A (en) * | 1990-01-26 | 1991-10-01 | Nissin Electric Co Ltd | Control system for reactive power compensator |
| CN201975795U (en) * | 2011-03-18 | 2011-09-14 | 鞍山市恒力电气设备制造有限公司 | Hybrid excitation triggering and double-core excitation winding MCR (Magnetically Controlled Reactor) |
| CN103178529A (en) * | 2013-04-03 | 2013-06-26 | 杭州银湖电气设备有限公司 | Phase-splitting control method and device of magnetic control type quick response dynamic reactive power compensation system |
| CN103310953A (en) * | 2013-05-21 | 2013-09-18 | 江苏宏安变压器有限公司 | Three-phase five-column arc extinction electric reactor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185511A (en) * | 2015-11-06 | 2015-12-23 | 山东大学 | Three-phase saturation resistor capable of reducing bounded uncertainty |
| CN108832609A (en) * | 2018-07-11 | 2018-11-16 | 云南电网有限责任公司电力科学研究院 | A method of singlephase earth fault is solved based on turn-adjusting arc-extinguishing winding |
| CN108832609B (en) * | 2018-07-11 | 2019-08-27 | 云南电网有限责任公司电力科学研究院 | A method of singlephase earth fault is solved based on turn-adjusting arc-extinguishing winding |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
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| Publication number | Publication date |
|---|---|
| CN104362644B (en) | 2017-02-22 |
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