CN204905819U - Electric power electric wire ice -melt circuit based on STATCOM - Google Patents
Electric power electric wire ice -melt circuit based on STATCOM Download PDFInfo
- Publication number
- CN204905819U CN204905819U CN201520740259.XU CN201520740259U CN204905819U CN 204905819 U CN204905819 U CN 204905819U CN 201520740259 U CN201520740259 U CN 201520740259U CN 204905819 U CN204905819 U CN 204905819U
- Authority
- CN
- China
- Prior art keywords
- circuit
- ice
- melt
- statcom
- connects
- 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.)
- Expired - Fee Related
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
- Y02E40/10—Flexible AC transmission systems [FACTS]
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses an electric power electric wire ice -melt circuit based on STATCOM, including condenser network, voltage rectifier circuit, reactor, electric capacity circuit connection voltage rectifier circuit, voltage rectifier circuit connects the reactor, the three -phase power transmission line is connected to the reactor, the condenser network includes two at least parallelly connected condensers, the both ends of two at least parallelly connected condensers with voltage rectifier circuit both ends correspond to be connected, voltage rectifier circuit includes the parallelly connected inverter circuit of three routes, each way circuit of the inverter circuit that the three routes connected in parallel is established ties by two the same dc -to -ac converters and is constituteed, each way circuit corresponds to be connected one of them electric wire of three -phase power transmission line. Through the technical solution, the utility model discloses an electric power electric wire ice -melt circuit based on STATCOM can improve ice -melt efficiency, improve voltage stability when switching.
Description
Technical field
The utility model relates to electric wire ice-melt field, particularly a kind of power cord ice-melt circuit based on STATCOM.
Background technology
Powerline ice-covering can cause line tripping, broken string, and the accidents such as the overweight meeting of icing causes shaft tower to collapse, insulator arc-over, have a strong impact on the safe operation of electrical network, produce large-area power outage.Line ice coating often occurs in Heavy snow weather; due to environment and traffic problems; work can not be rushed to repair in timely complete field; therefore; very large impact is there is in line ice coating on the safe operation of electrical network; serious icing phenomenon can cause the phenomenon such as disconnected stock, ice-shedding of overhead ground wire, thus makes overhead ground wire lose protective effect, causes transmission line short circuit.
Aerial condutor deicing de-icing technology be alleviate Transmission Line in Winter by ice and snow attack effective measures, and the DC ice melting technology ice-melt efficiency of the overhead ground wire of current employing is lower, switch time voltage stability lower, be not well positioned to meet actual needs.
Utility model content
In order to solve these potential problems, the purpose of this utility model to be to overcome in prior art existing above-mentioned deficiency, provides a kind of ice-melt efficiency high, that voltage stability is high when switching power cord ice-melt circuit.
In order to realize above-mentioned utility model object, the technical solution adopted in the utility model is:
Based on a power cord ice-melt circuit of STATCOM, it is characterized in that, comprise condenser network, voltage rectifying circuit, reactor,
Described condenser network connects described voltage rectifying circuit, and described voltage rectifying circuit connects described reactor, and described reactor connects three phase transmission line;
Described condenser network comprises at least two capacitors in parallel, and the two ends of described at least two capacitors in parallel are corresponding with described voltage rectifying circuit two ends to be connected;
Described voltage rectifying circuit comprises the inverter circuit of three tunnel parallel connections, and each road circuit of the inverter circuit of described three tunnel parallel connections is composed in series by two identical inverters, and each road circuit correspondence described connects a wherein electric wire of described three phase transmission line.
Further, described inverter comprises transistor and diode, diodes in parallel described in described transistor AND gate, and the positive pole of described diode connects the emitter of described transistor, and the negative pole of described diode connects the collector electrode of described transistor.
Further, described transistor is any one in GTO, IGBT, IGCT.
compared with prior art, the beneficial effects of the utility model
A kind of power cord ice-melt circuit based on STATCOM of the present utility model, under ice-melt mode, by icing transmission line in parallel in DC capacitor side, makes the power of transmission carry out ice-melt to circuit; Under non-ice-melt mode, by changing section wiring, device is run as STATCOM, thus improve ice-melt efficiency, voltage stability when improve switching.
Accompanying drawing explanation
It is a kind of power cord ice-melt circuit diagram based on STATCOM shown in a specific embodiment of the present utility model shown in Fig. 1.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
Embodiment 1:
Be a kind of power cord ice-melt circuit diagram based on STATCOM shown in a specific embodiment of the present utility model shown in Fig. 1, comprise condenser network 1, voltage rectifying circuit 2, reactor 3,
Described condenser network 1 connects described voltage rectifying circuit 2, and described voltage rectifying circuit 2 connects described reactor 3, and described reactor 3 connects three phase transmission line 4;
Described condenser network 1 comprises at least two capacitors in parallel, and the two ends of described at least two capacitors in parallel are corresponding with described voltage rectifying circuit two ends to be connected;
Described voltage rectifying circuit 2 comprises the inverter circuit (21,22,23) of three tunnel parallel connections, each road circuit of the inverter circuit (21,22,23) of described three tunnel parallel connections is composed in series by two identical inverters, and each road circuit described all connects a wherein electric wire (A, B, C) of described three phase transmission line by a reactor correspondence.
Described inverter comprises transistor and diode, diodes in parallel described in described transistor AND gate, and the positive pole of described diode connects the emitter of described transistor, and the negative pole of described diode connects the collector electrode of described transistor.
Described transistor is any one in GTO, IGBT, IGCT.
In an embodiment, under ice-melt mode of operation, active power flows to DC side from voltage rectifying circuit AC, by at DC capacitor icing transmission line in parallel, make the power of transmission carry out ice-melt to circuit, and by SPWM control technology, make AC voltage and current keep same-phase, make reactive power consumption be tending towards 0, realize deicing device and be in ice-melt state; Under non-ice-melt mode, by changing section wiring, device is run as STATCOM, and now reactive power flows to AC from DC side, hardly transmitting active power.In practical operation, according to the change in voltage of the three phase transmission line of incoming transport side, change the control phase of modulating wave, realize that ac bus perception is idle to be compensated with the selectivity of capacitive reactive power, thus improve ice-melt efficiency, voltage stability when improve switching.
By reference to the accompanying drawings embodiment of the present utility model is described in detail above, but the utility model is not restricted to above-mentioned execution mode, in the spirit and scope situation of claim not departing from the application, those skilled in the art can make various amendment or remodeling.
Claims (3)
1., based on a power cord ice-melt circuit of STATCOM, it is characterized in that, comprise condenser network, voltage rectifying circuit, reactor,
Described condenser network connects described voltage rectifying circuit, and described voltage rectifying circuit connects described reactor, and described reactor connects three phase transmission line;
Described condenser network comprises at least two capacitors in parallel, and the two ends of described at least two capacitors in parallel are corresponding with described voltage rectifying circuit two ends to be connected;
Described voltage rectifying circuit comprises the inverter circuit of three tunnel parallel connections, and each road circuit of the inverter circuit of described three tunnel parallel connections is composed in series by two identical inverters, and each road circuit correspondence described connects a wherein electric wire of described three phase transmission line.
2. a kind of power cord ice-melt circuit based on STATCOM according to claim 1, it is characterized in that, described inverter comprises transistor and diode, diodes in parallel described in described transistor AND gate, the positive pole of described diode connects the emitter of described transistor, and the negative pole of described diode connects the collector electrode of described transistor.
3. a kind of power cord ice-melt circuit based on STATCOM according to claim 2, it is characterized in that, described transistor is any one in GTO, IGBT, IGCT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520740259.XU CN204905819U (en) | 2015-09-23 | 2015-09-23 | Electric power electric wire ice -melt circuit based on STATCOM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520740259.XU CN204905819U (en) | 2015-09-23 | 2015-09-23 | Electric power electric wire ice -melt circuit based on STATCOM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905819U true CN204905819U (en) | 2015-12-23 |
Family
ID=54927970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520740259.XU Expired - Fee Related CN204905819U (en) | 2015-09-23 | 2015-09-23 | Electric power electric wire ice -melt circuit based on STATCOM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204905819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487250A (en) * | 2016-11-11 | 2017-03-08 | 温州任和教育科技有限责任公司 | Electric power tower |
-
2015
- 2015-09-23 CN CN201520740259.XU patent/CN204905819U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487250A (en) * | 2016-11-11 | 2017-03-08 | 温州任和教育科技有限责任公司 | Electric power tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103915808B (en) | DC ice melting device based on voltage source type current converter and control method thereof | |
| CN103219738B (en) | Direct current transmission system based on three-pole type structure | |
| WO2015184955A1 (en) | Voltage source type dc ice melting and static synchronous compensation device and method for controlling same | |
| CN103001242B (en) | A kind of HVDC based on modularization multi-level converter holds concurrently UPFC system | |
| CN203813384U (en) | DC ice melting device based on voltage source type current converter | |
| CN103606917B (en) | Non-sine ac transmission is used to promote the transmission system of urban distribution network conveying capacity | |
| CN102642481B (en) | Electricity energy regulating-ice melting device and method for railway traction network | |
| CN203367934U (en) | DC deicing system | |
| WO2023134225A1 (en) | Low-frequency power transmission system and control mode therefor | |
| CN105656051A (en) | Transient-energy dissipation device | |
| CN204465022U (en) | A kind of direct-flow distribution system based on modularization multi-level converter | |
| CN103078287A (en) | Direct-current high-current ice-melting device with STATCOM function | |
| CN202134875U (en) | Mobile series-connection direct-current ice melting device | |
| CN104578170A (en) | High-low-voltage ride-through device of thermal power generating unit auxiliary frequency converter | |
| CN204905819U (en) | Electric power electric wire ice -melt circuit based on STATCOM | |
| CN204030619U (en) | A kind of light DC power transmission equipment high voltage direct current lateral capacitance charging structure | |
| CN203103884U (en) | DC high-current ice melting apparatus with STSTCOM function | |
| CN202160116U (en) | Novel power unit used in light DC transmission equipment | |
| CN102983586A (en) | High voltage direct current transmission (HVDC) and unified power flow controller (UPFC) system based on three-level inverter voltage source current converter | |
| CN102244382A (en) | Novel power unit for light DC power transmission equipment | |
| CN203660898U (en) | Low-cost layout structure with low stray inductance in electronic equipment | |
| CN110224365A (en) | DC de-icing device and method based on diode rectification and full-bridge MMC inverter | |
| CN203166539U (en) | HVDC and UPFC system based on modularized multilevel converter | |
| CN203554304U (en) | Auxiliary converter module for diesel locomotive | |
| CN204030618U (en) | A kind of HVDC light system with dc-side short-circuit protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |