CN202282595U - High-voltage direct-current ice melting device with a source filter function - Google Patents
High-voltage direct-current ice melting device with a source filter function Download PDFInfo
- Publication number
- CN202282595U CN202282595U CN201120401521XU CN201120401521U CN202282595U CN 202282595 U CN202282595 U CN 202282595U CN 201120401521X U CN201120401521X U CN 201120401521XU CN 201120401521 U CN201120401521 U CN 201120401521U CN 202282595 U CN202282595 U CN 202282595U
- Authority
- CN
- China
- Prior art keywords
- functional module
- module
- lead
- circuit
- master control
- 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.)
- Withdrawn - After Issue
Links
Images
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
- Y02E40/20—Active power filtering [APF]
-
- 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
- Inverter Devices (AREA)
Abstract
The utility model discloses a high-voltage direct-current ice melting device with a source filter function, which comprises an input isolation function module, a detection function module, a reactor function module, a main control function module, a multilevel converter function module and an output switch control function module. The high-voltage direct-current ice melting device solves the generality lack of the prior direct-current ice melting device and can not satisfy the ice-melting problem on various voltage level transmission lines. The prior device is based on the voltage source double-level converter design and needs a passive filter device, if the design volume of the system is increased, the volume and the cost of the passive filter device will also be increased and simultaneously the system loss will be also increased. The prior direct-current ice melting device only has the ice melting function and the when the road is not coated by the ice, the device is idle and the utilization rate is not high.
Description
Technical field
The utility model relates to the power control technology field, especially HVDC de-icing technology field.
Background technology
Climate reasons causes powerline ice-covering to become one of natural calamity of electric power system; Repeatedly take place in recent years; It is crossing of cold and heat air that the circuit icing mainly forms reason, and all more intense when the force of cold and heat air, and the time that crosses is when long again; Just possibly form bigger icing, cause line fault.Particularly rare ice damage in 2008 causes many areas situation such as shaft tower collapses, line interruption, transformer station's stoppage in transit to occur, especially makes Hunan, Southwest China area, and the loss of ground such as Guizhou is huge.Climax also appearred in the development of China's deicing device from 2008; Along with the continuous development of power electronic technology, constantly enlarge based on complete current transformer technical application scopes of controlling power electronic device such as IGBT, various deicing device and designs based on power electronic device also constantly occur; But deicing device uses to electric power system; The electric pressure span is bigger, brings difficulty for the versatility design of equipment, and the period appears in while ice damage phenomenon in the whole year shorter relatively; The deicing device most of the time is in idle state, causes the equipment waste.Retrieval through to the prior art document is found; People such as Fan Ruixiang are International Conference on Electrical and Control Engineering in 2010 (electric with Control Engineering international conference), on the A New Type of DC De-icing System for Transmission Lines (a kind of novel power line DC ice-melting system) that delivers, design and developed a jacket stationary type DC de-icing device; Based on six groups of voltage source converters; Adopt six groups of bridge parallel connections, improve system's output current, power output is big; Can be used in than long transmission line, the high voltage ice-melting device for electric network uses.But also there is following shortcoming in this device: 1, this device adopts six groups of three-phase bridge parallel-connection structures, and input needs high-power transformer to be connected with electrical network, has increased equipment volume and cost.2, because equipment based on voltage source two level current transformer structural designs, needs passive filtration unit, and with the increase of system design capacity, passive filter volume and cost also can increase, the simultaneity factor loss increases.3, this device only possesses the ice-melt function, does not consider other purposes in the design, does not therefore have under the icing situation at circuit, and idleness of equipment utilization rate of equipment and installations is not high.
Summary of the invention
The technical problem that the utility model will solve: a kind of HVDC deicing device that has the source filter function is provided, to solve:
1. existing DC de-icing device versatility is not enough, can't satisfy the various electric pressure transmission line of electric power system ice-melt problem;
2. existing equipment needs passive filtration unit based on voltage source two level current transformer structural designs, and with the increase of system design capacity, passive filter volume and cost also can increase, problems such as simultaneity factor loss increase.
3. problems such as existing DC de-icing device only possesses the ice-melt function, and circuit does not have under the icing situation, and idleness of equipment utilance is not high;
The utility model technical scheme:
A kind of HVDC deicing device that has the source filter function, it comprises:
Input isolation features module: be used to connect the ac bus power supply, be responsible for accomplishing the power up of whole device, be connected with measuring ability module lead;
The measuring ability module is used to detect three-phase alternating voltage and the electric current of importing the isolation features module, and testing result is delivered to the master control functional module, is connected with reactor functional module lead with the master control functional module;
The reactor functional module is used for input voltage is imported filtering and direct current press pump liter, is connected with many level current transformers functional module lead;
The master control functional module is used for signals collecting, computing, control, protection and the communication of whole device, is connected with measuring ability module lead with many level current transformers functional module;
Many level current transformers functional module; Be used to receive and move the control signal that the master control functional module is sent; The alternating voltage of reactor functional module output is become direct voltage export to output switch control functions module; Simultaneously, fault and detection signal are delivered to the master control functional module, be connected with master control functional module lead with output switch control functions module;
Output switch control functions module, the direct voltage that many level current transformers functional module is exported carries out break-make control, is connected with icing line load lead.
The master control functional module comprises digital signal processor and programmable logic device, connects through data wire between the two.
Many level current transformers functional module comprises main circuit, testing circuit, protective circuit and drive circuit; Main circuit is connected through lead with testing circuit; Testing circuit is connected through lead with protective circuit; Protective circuit is connected through lead with drive circuit, and drive circuit is connected through lead with main circuit.
The utility model beneficial effect:
The utility model has designed a kind of HVDC deicing device that has the source filter function; Main circuit in its many level current transformers functional module adopts many level of modularization cascade structure; Can be at any time according to the line voltage grade quantity of expanding system concatenated power unit number or modifier serial module structure at any time; The circuit that adapts to different electric pressures, it is not enough to have solved existing DC de-icing device versatility, can't satisfy the various electric pressure transmission line of electric power system ice-melt problem.
The utility model has been compared with traditional deicing device and has been saved input phase shifting transformer and passive filter, and many level current transformers functional module main circuit adopts novel modularized cascade connection multi-level structure, and this structure has the public direct-current side; Compare with traditional axle cascade connection multi-level structure and to be more suitable in transmission active power, owing to adopt many level structure, the device equivalent switching frequency is high simultaneously; The output waveform quality is good; Input/output terminal need not to increase passive filter, and system loss is less, has solved the existing equipment DC de-icing device based on voltage source two level current transformer structural designs; Need passive filtration unit; With the increase of system design capacity, passive filter volume and cost also can increase, problems such as simultaneity factor loss increase.
The utility model DC de-icing device, need not be used for the circuit deicing time, the active power filtering that can be used as transmission line uses idle; To improve usage ratio of equipment, method of operation is: the air switch QF3 that at first breaks off output switch control functions module; The air switch QF2 of closed then input isolation features module is so that charge to the electric capacity of many level current transformers functional module, when treating that direct voltage reaches instructions for use; The air switch QF1 of closed input isolation features module breaks off QF2 then, and the functional module of master control is simultaneously carried out the Active Power Filter-APF control program that weaves in advance; Through detection of grid voltage, current signal is by the digital signal processor (DSP) of master control functional module; Isolate harmonic signal,, be sent to programmable logic device (FPGA) as controlled quentity controlled variable; The final trigger impulse that produces is controlled many level current transformers functional module output offset current, to reach the purpose of active power filtering; Solved existing DC de-icing device and only possessed the ice-melt function, problem such as circuit does not have under the icing situation, and idleness of equipment utilance is not high.
Description of drawings:
Fig. 1 is the utility model functional block diagram;
Fig. 2 is the utility model hardware connection principle schematic;
Fig. 3 is many level current transformers of the utility model functional module structure figure;
Fig. 4 is many level current transformers of the utility model functional module topology diagram.
Embodiment:
A kind of HVDC deicing device that has the source filter function, embodiment is following: it comprises following function module (see figure 1):
Input isolation features module: be used to connect the ac bus power supply, it comprises (seeing Fig. 2 for details) input circuit breaker Q F2, charging resistor R and bypass breaker QF1 thereof; Input circuit breaker Q F2 input connects ac bus electrical network output charging resistor and connects, and bypass breaker QF1 and QF2 and charging resistor R are connected in parallel.Two circuit breaker rated current are selected 2000 A, and switching order is closed earlier for the input circuit breaker, and when the system direct voltage of treating reached 1.35 times of input AC line voltage effective values, closed bypass breaker QF1 excised charging resistor R, accomplishes the power up of whole device.
The measuring ability module; Be used to detect the three-phase alternating voltage and the electric current of input isolation features module; And testing result delivered to the master control functional module, and being connected transmission signals with the reactor functional module through lead with the master control functional module, it comprises (see figure 2) three-phase alternating current pressure sensor and AC current sensor; Wherein voltage sensor PT adopts pole structure; Be connected in parallel in the input isolation features module and import between circuit breaker Q F2 and the ground wire PE, so that detect input side line voltage, specified range 0-35kV.AC current sensor CT is connected between reactor functional module and the input isolation features module, detects the I/O electric current, specified range 0-1200 A, and detected voltage signal and current signal are delivered to the master control functional module.
The reactor functional module; Be used for input voltage is imported filtering and direct current press pump liter; Be connected with many level current transformers functional module lead, comprise three-phase reactor L (see figure 2), be connected between input isolation features module and the many level current transformers functional module; The effect of reactor is input filtering and direct current press pump liter, rated current 1500 A.
The master control functional module is connected with measuring ability module lead with many level current transformers functional module; It adopts digital signal processor (DSP) and programmable logic device (FPGA) to connect through data wire between the two as core.Integrated signals collecting; Computing, protection, communication function; Realize whole device Digital Control; Wherein FPGA receives each cell voltage and the various fault message that each unit inner sensor and testing circuit transmit, and issues dsp chip after the integrated treatment, receives the trigger impulse that control signal that DSP sends is translated into each brachium pontis internal power unit in many level current transformers functional module simultaneously and is sent to drive circuit in each power cell.Dsp chip receives DC de-icing device main circuit voltage transducer, current sensor signal simultaneously, carries out computing and exports concrete control signal.
Many level current transformers functional module; Be used to receive and move the control signal that the master control functional module is sent, the alternating voltage of reactor functional module output become direct voltage export to output switch control functions module, simultaneously; Fault and detection signal are delivered to the master control functional module; Be connected with master control functional module lead with output switch control functions module, many level current transformers functional module comprises (see figure 3) main circuit 1; And the testing circuit 2 of interior each power cell of brachium pontis, protective circuit 3, drive circuit 4.Wherein main circuit 1 adopts the half-bridge structure power cell to constitute; The half-bridge structure power cell is made up of the IGBT1 and the IGBT2 of high-power band inverse parallel diode; IGBT1 is connected with the half-bridge form with IGBT2; Half-bridge mid point and very output of brachium pontis IGBT2 emission down are connected with other half-bridge structure power unit cascades.Dc capacitor C is parallelly connected with IGBT1 and IGBT2; Drive circuit 4 links to each other with the IGBT12 gate pole with the IGBT1 of main circuit 1; Amplify trigger impulse and drive each IGBT switch motion, protective circuit 3 links to each other with drive circuit 4 and testing circuit 2, and testing circuit 2 detects capacitance voltage, IGBT electric current and temperature signal; In case overvoltage, under-voltage, short circuit, overcurrent, overtemperature fault occur; Fault-signal is sent it back the master control functional module handle, and trigger the action of relevant hardware protective circuit, burn to avoid the half-bridge structure power cell.In Fig. 4, the main circuit of whole many level current transformers functional module connects with the three-phase bridge structure, and each brachium pontis is in series by n above-mentioned power cell (submodule), and series connection circulation suppresses reactor L1-L6 between each phase upper and lower bridge arm.Three-phase brachium pontis mid point U, V, W are that many level current transformers module exchanges input, link to each other with the reactor functional module, and last three groups of brachium pontis common points constitute converter module direct current output point P with following three groups of brachium pontis common points, and N links to each other with output switch control functions module.Each power cell of many level current transformers functional module is installed on the radiator, adopts the air blast cooling mode to cool off.
Output switch control functions module; Direct voltage to the output of many level current transformers functional module carries out break-make control; Wherein any two phase inputs parallel connection; Be connected in many level current transformers functional module DC side positive polarity output terminal, another phase input links to each other with many level current transformers functional module negative polarity output.Make the DC load of icing circuit as many level current transformers functional module, many level current transformers functional module output current makes the circuit heating, reaches the ice-melt purpose, is connected with the icing line load through lead.Carry out current delivery.
The course of work of present embodiment: as shown in Figure 2, the utility model DC de-icing device when carrying out the ice-melt operation, at first closed QF2; When treating that many level current transformers functional module dc voltage reaches requirement (generally can be set to 1.35 times of input AC line voltage effective values), closed QF1 breaks off QF2 then; The functional module of master control is simultaneously carried out the PWM rectification control program that is provided with in advance, exports trigger impulse, controls the dc voltage of many level current transformers functional module; And tracing preset; After treating dc voltage stability, the air switch QF3 of closed output switch control functions module begins the icing circuit is carried out ice-melt.Ice-melt is broken off QF1 after finishing successively, and QF3 gets final product.
When if this device uses as active power filtering, as shown in Figure 2, at first break off QF3, closed then QF2; To the charging of many level current transformers functional module electric capacity, when treating that direct voltage reaches requirement, closed QF1 breaks off QF2 then; The functional module of master control is simultaneously carried out the Active Power Filter-APF control program, through measuring ability module detection of grid voltage, current signal; DSP through the master control functional module isolates harmonic signal, as controlled quentity controlled variable; Be sent to FPGA, finally produce trigger impulse, control many level current transformers functional module output offset current.
The advantage of the utility model:
1. the utility model can be realized the ice-melt work of each electric pressure transmission line, compares with traditional thyristor deicing device and can save the input phase shifting transformer, reduces equipment volume, enhancement apparatus mobility.
2. adopt novel modularized cascade connection multi-level structure, this structure has the public direct-current side, compares with traditional H bridge cascade connection multi-level structure to be more suitable in transmission active power; Simultaneously owing to adopt many level structure; System's equivalent switching frequency is high, and the output waveform quality is good, and input need not to increase passive filter; System loss is less, raises the efficiency.
3. institute's design apparatus possesses the active power filtering function simultaneously, when circuit has icing, can not compensate transmission line harmonic, improves the quality of power supply, also improves utilization rate of equipment and installations simultaneously.
4. employing digital Control Technology, as its processing core, FPGA makes device have perfect protection as expansion with high performance DSP, control, communication function.Control precision and integrated degree are all higher.
Claims (3)
1. HVDC deicing device that has the source filter function, it comprises:
Input isolation features module: be used to connect the ac bus power supply, be responsible for accomplishing the power up of whole device, be connected with measuring ability module lead;
The measuring ability module is used to detect three-phase alternating voltage and the electric current of importing the isolation features module, and testing result is delivered to the master control functional module, is connected with reactor functional module lead with the master control functional module;
The reactor functional module is used for input voltage is imported filtering and direct current press pump liter, is connected with many level current transformers functional module lead;
The master control functional module is used for signals collecting, computing, control, protection and the communication of whole device, is connected with measuring ability module lead with many level current transformers functional module;
Many level current transformers functional module; Be used to receive and move the control signal that the master control functional module is sent; The alternating voltage of reactor functional module output is become direct voltage export to output switch control functions module; Simultaneously, fault and detection signal are delivered to the master control functional module, be connected with master control functional module lead with output switch control functions module;
Output switch control functions module, the direct voltage that many level current transformers functional module is exported carries out break-make control, is connected with icing line load lead.
2. a kind of HVDC deicing device that has the source filter function according to claim 1, it is characterized in that: the master control functional module comprises digital signal processor and programmable logic device, between connect through data wire.
3. a kind of HVDC deicing device that has the source filter function according to claim 1; It is characterized in that: many level current transformers functional module comprises main circuit (1), testing circuit (2), protective circuit (3) and drive circuit (4); Main circuit (1) is connected through lead with testing circuit (2); Testing circuit (2) is connected through lead with protective circuit (3); Protective circuit (3) is connected through lead with drive circuit (4), and drive circuit (4) is connected through lead with main circuit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120401521XU CN202282595U (en) | 2011-10-20 | 2011-10-20 | High-voltage direct-current ice melting device with a source filter function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120401521XU CN202282595U (en) | 2011-10-20 | 2011-10-20 | High-voltage direct-current ice melting device with a source filter function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282595U true CN202282595U (en) | 2012-06-20 |
Family
ID=46228746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120401521XU Withdrawn - After Issue CN202282595U (en) | 2011-10-20 | 2011-10-20 | High-voltage direct-current ice melting device with a source filter function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354942A (en) * | 2011-10-20 | 2012-02-15 | 贵州电网公司输电运行检修分公司 | High-pressure DC (direct current) ice melting device |
| CN103746327A (en) * | 2013-12-18 | 2014-04-23 | 广西大学 | 10KV station-used type DC ice melting device |
| CN114709780A (en) * | 2021-12-21 | 2022-07-05 | 贵州电网有限责任公司 | Power regulation-based online ice melting device for power transmission and distribution line and control method |
-
2011
- 2011-10-20 CN CN201120401521XU patent/CN202282595U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354942A (en) * | 2011-10-20 | 2012-02-15 | 贵州电网公司输电运行检修分公司 | High-pressure DC (direct current) ice melting device |
| CN103746327A (en) * | 2013-12-18 | 2014-04-23 | 广西大学 | 10KV station-used type DC ice melting device |
| CN103746327B (en) * | 2013-12-18 | 2016-10-05 | 广西宏湖水利电业科技发展有限公司 | Formula DC de-icing device is used at a kind of 10KV station |
| CN114709780A (en) * | 2021-12-21 | 2022-07-05 | 贵州电网有限责任公司 | Power regulation-based online ice melting device for power transmission and distribution line and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101345419B (en) | Series voltage quality regulator and fast investment and cutting method | |
| CN102769289B (en) | Three-phase unified power quality conditioner (UPQC) topological circuit based on modular multilevel converter (MMC) and pre-charging method of three-phase UPQC topological circuit | |
| CN101971474A (en) | Magnetic energy recovery switech having protective circuit | |
| CN201774458U (en) | MMC (modular multilevel converter)-based transformerless four-quadrant topological structure of high-voltage variable frequency power source | |
| CN204967652U (en) | Subway energy feedback device | |
| CN102354942B (en) | High-pressure DC (direct current) ice melting device | |
| CN203399013U (en) | Static synchronous compensator based on three-level H bridge cascade and voltage source inversion module | |
| CN202282595U (en) | High-voltage direct-current ice melting device with a source filter function | |
| CN201467005U (en) | Parallel-connected high-power half-bridge PEBB based on IGBT | |
| CN107591864B (en) | Elevator energy recovery system based on intelligent super capacitor module | |
| CN203827203U (en) | High-power optical storage integrated converter | |
| CN203896199U (en) | Large-power high-efficiency energy-saving soft-melting power supply based on series-parallel type high-voltage frequency conversion technology | |
| CN101860070B (en) | Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof | |
| CN208947110U (en) | A kind of charging system for electric automobile | |
| CN204578373U (en) | A kind of High Frequency Link many level DCs transformer for mesolow DC distribution | |
| CN107171270B (en) | Intensive deicing device constant current, constant pressure modularization dynamic passive compensation component | |
| CN201682316U (en) | High-frequency soft switching UPS of locomotive air conditioner | |
| CN206640304U (en) | Multifunctional short circuit demand limiter | |
| CN201690395U (en) | Soft starter for continuous frequency conversion and voltage transformation of motor | |
| CN203675001U (en) | Novel low-power three-level inverter inversion unit | |
| CN103633867A (en) | Seven-level single-phase inverter circuit | |
| CN203071834U (en) | High-frequency heating power-supply inversion main circuit for polysilicon reducing furnace | |
| CN202997658U (en) | Inverter and charger integrally modularized H-bridge cascade UPS single/three-phase system | |
| CN203537260U (en) | Seven-level single-phase inverter circuit | |
| CN102263502A (en) | High-power wind power converter energy storage capacitor charging circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120620 Effective date of abandoning: 20140813 |
|
| RGAV | Abandon patent right to avoid regrant |