CN104065068A - Short circuit control current limiter device - Google Patents
Short circuit control current limiter device Download PDFInfo
- Publication number
- CN104065068A CN104065068A CN201410223057.8A CN201410223057A CN104065068A CN 104065068 A CN104065068 A CN 104065068A CN 201410223057 A CN201410223057 A CN 201410223057A CN 104065068 A CN104065068 A CN 104065068A
- Authority
- CN
- China
- Prior art keywords
- short circuit
- current
- limiting reactor
- filter
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a short circuit control current limiter device, and belongs to the technical field of electric power systems. The short circuit control current limiter device comprises a current-limiting reactor connected between a power grid system and a user-side load in series and a filter compensation circuit connected to two ends of the current-limiting reactor in parallel, wherein the filter compensation circuit adopts two three-phase rectifiers connected to the direct-current side, and is equivalent to a active power filter added with a static synchronous compensator; when the power grid system works normally, the short circuit control current limiter device achieves an active power filter reactive compensation function, and when the load side is detected to have a short circuit problem, the filter compensation circuit of the device quits operation, the current-limiting reactor Lfcl connected into the circuit in series serves as a large resistor to suppress large current impact when the system is in short circuit and limit the level of the short circuit current within a range that a relay protection device can act reliably without damaging a sensitive load device.
Description
Technical field
The present invention relates to a kind of fault control restrictor apparatus, belong to technical field of power systems.
Background technology
Along with the development of electric power system and modernization industry, large Power System Interconnection carries out, and the capacity of short circuit of electric power system increases day by day.Improve in order to meet short circuit current the harsher requirement bringing, conventional way is in electrical network, to seal in current limiting reactor.In addition, in the electricity consumption of modern electric load, power electronic technology is more prevalent.Statistics shows, exceedes 50% electric energy and is applied by adjustment or the conversion of Technics of Power Electronic Conversion equipment at least one times.These Technics of Power Electronic Conversion equipment nearly all be unable to do without the application of rectifier.Thereby the harmonic wave that the load of rectification class causes and idle problem have become the subject matter of electric power quality.
Summary of the invention
The object of this invention is to provide a kind of fault control restrictor apparatus, the harmonic wave and the idle problem that are caused to solve the load of rectification class.
The present invention provides a kind of fault control restrictor apparatus for solving the problems of the technologies described above, this restrictor apparatus comprises for being serially connected in the current limiting reactor between network system and user's lateral load and being attempted by the filtering compensation circuit at current limiting reactor two ends, this filtering compensation circuit comprises two three-phase commutation bridges, two described three phase rectifying bridge DC sides are connected by an electric capacity, the AC of a three-phase commutation bridge is attempted by between current limiting reactor and user's lateral load by LC filter and threephase switch, the AC of another three-phase commutation bridge is attempted by between network system and current limiting reactor.
The invention has the beneficial effects as follows: fault control restrictor apparatus of the present invention comprises for being serially connected in the current limiting reactor between network system and user's lateral load and being attempted by the filtering compensation circuit at current limiting reactor two ends, filtering compensation circuit adopts two three-phase commutation bridges that DC side is connected, this filtering compensation circuit is equivalent to an active filter and adds a STATCOM, when network system is normally moved, fault control restrictor apparatus of the present invention is realized active filtering reactive power compensation function, and in the time detecting that short circuit problem appears in load-side, the filtering compensation circuit of this device is out of service, be connected on the current limiting reactor L in circuit
fclbe equivalent to large resistance and suppress system short-circuit heavy impulse current, within short circuit current level is limited in to the scope that protective relaying device action message is unlikely to again to damage sensitive load equipment.
Brief description of the drawings
Fig. 1 is the system construction drawing of fault control restrictor apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Fault control restrictor apparatus structure of the present invention as shown in Figure 1, this device is used for being arranged between electric power system and user's lateral load, to solve the short circuit current problem of user's side, this restrictor apparatus comprises for being serially connected in the current limiting reactor L between network system and user's lateral load
fcland be attempted by current limiting reactor L
fclthe filtering compensation circuit at two ends, this filtering compensation circuit comprises two three-phase commutation bridges, between two three phase rectifying bridge DC sides, connect by an electric capacity, the filtering compensation circuit forming is equivalent to an active filter and adds a STATCOM (APF+STATTCOM), the AC of one of them three-phase commutation bridge is attempted by between current limiting reactor and user's lateral load by LC filter and threephase switch S, and the AC of another three-phase commutation bridge is attempted by between network system and current limiting reactor.Wherein LC filter is for the high order harmonic component of filtering circuit.When network system is normally moved, fault control restrictor apparatus of the present invention is realized active filtering reactive power compensation function, and in the time detecting that short circuit problem appears in load-side, the full control device block signal of this device is out of service.
The specific works process of this device is as follows: major loop adopts two three-phases online operational mode of PWM rectifier control device control back-to-back, when circuit is normally worked, testing circuit detects voltage or the magnitude of current, be created in compensating signal definite under compensated setpoint strategy by control circuit, form PWM through pwm circuit again and drive signal, go turning on and off of control inverter part by drive circuit, finally by LC filter filtering high order harmonic component, thereby load-side is carried out to Real-Time Filtering and reactive power compensation, make it export good load voltage, in the time that load side is short-circuited fault, S disconnects, install part in parallel out of service, now be connected on the current limiting reactor L in circuit
fclbe equivalent to large resistance and suppress system short-circuit heavy impulse current, within short circuit current level is limited in to the scope that protective relaying device action message is unlikely to again to damage sensitive load equipment.Because line voltage has fluctuation, PWM rectifying part by this device is existing to be become the line voltage of fluctuation into galvanic current and presses, and after processing, obtains stable direct current another mistake and becomes to exchange and make user's side obtain the line voltage of high-quality by filtering and voltage stabilizing.
Claims (1)
1. a fault control restrictor apparatus, it is characterized in that, this restrictor apparatus comprises for being serially connected in the current limiting reactor between network system and user's lateral load and being attempted by the filtering compensation circuit at current limiting reactor two ends, this filtering compensation circuit comprises two three-phase commutation bridges, two described three phase rectifying bridge DC sides are connected by an electric capacity, the AC of a three-phase commutation bridge is attempted by between current limiting reactor and user's lateral load by LC filter and threephase switch, the AC of another three-phase commutation bridge is attempted by between network system and current limiting reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223057.8A CN104065068A (en) | 2014-05-23 | 2014-05-23 | Short circuit control current limiter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223057.8A CN104065068A (en) | 2014-05-23 | 2014-05-23 | Short circuit control current limiter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104065068A true CN104065068A (en) | 2014-09-24 |
Family
ID=51552656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223057.8A Pending CN104065068A (en) | 2014-05-23 | 2014-05-23 | Short circuit control current limiter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104065068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218610A (en) * | 2014-09-26 | 2014-12-17 | 苏州同虞新能源科技有限公司 | Novel photovoltaic grid-connected inverter capable of achieving self-adaptive adjustment of electric energy qualities |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202084919U (en) * | 2011-06-03 | 2011-12-21 | 上海理工大学 | Parallel-type multi-target short circuit fault current limiter |
| CN102377175A (en) * | 2011-11-24 | 2012-03-14 | 华北电力大学 | Short circuit current limiting device for harmonic suppression and reactive compensation |
| CN103066599A (en) * | 2012-12-13 | 2013-04-24 | 清华大学 | Three-phase three-wire system mixed type integrated power system electric energy quality regulator |
| CN103199539A (en) * | 2013-03-08 | 2013-07-10 | 华北电力大学 | Voltage dip compensation method of unified power quality conditioner with zero input active power |
| CN203871856U (en) * | 2014-05-23 | 2014-10-08 | 国家电网公司 | Short circuit-controlled current limiter device |
-
2014
- 2014-05-23 CN CN201410223057.8A patent/CN104065068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202084919U (en) * | 2011-06-03 | 2011-12-21 | 上海理工大学 | Parallel-type multi-target short circuit fault current limiter |
| CN102377175A (en) * | 2011-11-24 | 2012-03-14 | 华北电力大学 | Short circuit current limiting device for harmonic suppression and reactive compensation |
| CN103066599A (en) * | 2012-12-13 | 2013-04-24 | 清华大学 | Three-phase three-wire system mixed type integrated power system electric energy quality regulator |
| CN103199539A (en) * | 2013-03-08 | 2013-07-10 | 华北电力大学 | Voltage dip compensation method of unified power quality conditioner with zero input active power |
| CN203871856U (en) * | 2014-05-23 | 2014-10-08 | 国家电网公司 | Short circuit-controlled current limiter device |
Non-Patent Citations (1)
| Title |
|---|
| 甄晓亚等: "并联型电网短路限流多目标控制", 《华东电力》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218610A (en) * | 2014-09-26 | 2014-12-17 | 苏州同虞新能源科技有限公司 | Novel photovoltaic grid-connected inverter capable of achieving self-adaptive adjustment of electric energy qualities |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105406499B (en) | A kind of intelligent Hybrid HVDC system and fault handling method | |
| CN103915808B (en) | DC ice melting device based on voltage source type current converter and control method thereof | |
| CN104638665A (en) | Power reversal control method and power reversal control device for hybrid direct-current power transmission system | |
| CN111416424A (en) | Power supply circuit for governing voltage sag and short-time interruption and control method | |
| CN107026466B (en) | Symmetric bipolar MMC-HVDC device, system and fault ride-through control method | |
| CN104362616A (en) | Direct-current short-circuit fault ride-through method of modular multilevel converter of full-bridge submodule | |
| CN106655218A (en) | Hybrid filtering compensation device | |
| CN105186961A (en) | Motor driving system used for workover treatment | |
| CN104104143A (en) | Parallel-connected quiescent voltage restorer for isolating transient voltage fault of power system | |
| CN204706889U (en) | Low-voltage dynamic filtering bucking-out system | |
| CN204928348U (en) | Embedded dual supply automatic transfer equipment of protocol conversion ware | |
| CN102780263A (en) | Industrial uninterruptible power supply | |
| CN102412571B (en) | Bus short circuit current limiter for parallel compensation power grid | |
| Deshmukh et al. | Overview of dynamic voltage restorer (DVR) for power quality improvement | |
| CN203871856U (en) | Short circuit-controlled current limiter device | |
| CN104065068A (en) | Short circuit control current limiter device | |
| CN201956686U (en) | Active power filtering device | |
| CN209016707U (en) | Large capacity power quality controlling device is pressed in one kind | |
| CN201623436U (en) | Direct-current ice melting device capable of being multiplexed into TSC | |
| CN107453360A (en) | A kind of power supply quality optimizes device and method | |
| CN203261257U (en) | Solar photovoltaic power generation single-phase grid-connected inverter | |
| CN203301140U (en) | Transformer direct-current magnetic bias suppression device | |
| CN109946560A (en) | The current transformer polarity adaptive approach of photovoltaic DC-to-AC converter | |
| Dhal et al. | Power quality improvement based on uninterruptible power supply (UPS) in distribution system | |
| CN204361687U (en) | Many combined parallels static reacance generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |
|
| RJ01 | Rejection of invention patent application after publication |