CN102570790A - Low-temperature starting method for wind power current transformer - Google Patents
Low-temperature starting method for wind power current transformer Download PDFInfo
- Publication number
- CN102570790A CN102570790A CN2012100395276A CN201210039527A CN102570790A CN 102570790 A CN102570790 A CN 102570790A CN 2012100395276 A CN2012100395276 A CN 2012100395276A CN 201210039527 A CN201210039527 A CN 201210039527A CN 102570790 A CN102570790 A CN 102570790A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- temperature
- cabinet
- heating
- power
- 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
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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Protection Of Transformers (AREA)
Abstract
The invention discloses a low-temperature starting method for a wind power current transformer. A fan main controller is directly connected with the non-ready port of the current transformer. The method comprises the following steps of: after the current transformer is powered up, detecting and judging temperature and humidity of a current transformer control cabinet, if the temperature is higher than 0 degree, and the humidity is less than an upper limit of safe working humidity, an uninterrupted power supply (UPS) of a system is powered up and self-locked, and a control system is powered up, otherwise, a heating contactor of the control cabinet is closed, so that a normally open contact of the heating contactor cuts off the UPS, and continuing to detect and judge the temperature and the humidity of the control cabinet; then detecting and judging temperature of a current transformer power cabinet, if the temperature is higher than 0 degree, the non-ready port outputs a ready signal, and the control system controls a power cabinet heating device to perform t1-t2 hysteretic heating, otherwise, and the non-ready port outputs a non-ready signal, the control system controls the power cabinet to heat, and continuing to detect and judge the temperature of the power cabinet; and controlling the current transformer to start and work by the fan main controller. According to the low-temperature starting method, the wind power current transformer is ensured to be well heated and work reliably, the heating awaiting time of a wind power generator set is shortened, and the power generation amount is increased; and the low-temperature starting method is simple and reliable, and is convenient to implement.
Description
Technical field
The present invention relates to starting up's method of current transformer in a kind of wind generator system.
Background technology
Under the north of china in winter low temperature environment; The current transformer that wind power plant uses might cause the damage to current transformer at low temperature (exceeding the current transformer operating temperature range) when opening machine; Therefore, need heat, make current transformer in the safe working temperature scope, open machine work current transformer.
But existing current transformer is in low-temperature heat, and heating contactor auxiliary contact signals (or correlation signal) can feed back to master controller, make master controller detect current transformer and are in heated condition and can not open machine.
It is as shown in Figure 1 that the low temperature of the current transformer of existing certain model opens machine control circuit figure; Power cabinet heating feedback contact K1 is arranged between not ready interface X9.18 of current transformer and the master controller, power cabinet heating feedback contact K2 and series system after control cubicle heating feedback contact K3 is parallelly connected is opened the machine signalling contact K4 that is incorporated into the power networks be arranged between current transformer heated condition interface X9.19 and the master controller.
This model current transformer " system is ready to " signal is following with " current transformer heating feedback " signal definition:
Current transformer " system is ready to " signal: low level representes that current transformer is unripe, and high level representes that current transformer is ready to.When there is fault in current transformer, the X9.18 output low level.When power cabinet heated, feedback contact K1 can break off, and also output low level of X9.18 this moment represent current transformer unripe after feeding back to master controller, can not open machine at this moment.
" current transformer heating feedback " signal: low level is represented not heat, and high level is represented heating.When any one was in heated condition in control cubicle and the power cabinet, on behalf of current transformer, corresponding control cubicle heating feedback contact K3 and power cabinet heating feedback contact K2 closure be in heated condition after feeding back to master controller.When system opens after machine is incorporated into the power networks, contact K4 breaks off, after this, even the current transformer heating is also no longer given the feedback master controller with the heating signal of current transformer.
Open in the machine heating means at above-mentioned existing current transformer; Because but current transformer reality operating temperature range is with to add the thermal control temperature range inconsistent; Causing in fact, current transformer has been in operating temperature range; And heating process maybe be still carry out and feed back this heated condition to give master controller, is in the heated condition and can not opens machine thereby cause the blower fan master controller to detect current transformer.As keep the current transformer operating temperature range consistent with the heating control range, and existing current transformer heating means possibly cause the current transformer heating insufficient again, and current transformer often is in lower temperature work, causes fault easily.
Summary of the invention
The technical problem that the present invention will solve is; Provide a kind of wind electric converter low temperature to open the machine method; Overcome and still feed back the heated condition signal when current transformer that prior art exists is in operating temperature range and give master controller; Cause current transformer to be in the safe working temperature scope and still can not open machine, it is long that wind generator system opens the machine time, reduces the defective of the generating efficiency of wind generator system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of wind electric converter low temperature and open the machine method, it is characterized in that, the blower fan master controller directly connects the not ready port of current transformer; This method comprises the steps:
SP1, current transformer power on; Detect and judge current transformer control cubicle in-cabinet temperature and humidity by hardware circuit: when in-cabinet temperature greater than a degree centigrade zero degree, cabinet in humidity less than current transformer trouble free service humidity in limited time; The uninterrupted power supply UPS of the system self-locking that powers on; Converter control system powers on, and carries out next step then; Otherwise current transformer control cubicle heating contactor is closed, heats the contactor normally opened contact simultaneously and breaks off ups power output, continues to detect and judge current transformer control cubicle in-cabinet temperature and humidity;
SP2, detection also judge current transformer power cabinet in-cabinet temperature: when power cabinet in-cabinet temperature during greater than degree centigrade zero degree; The not ready port output of current transformer current transformer is ready to signal; Converter control system power controlling cabinet heater t1-t2 stagnates and encircles heating, carries out next step then; Otherwise, the unripe signal of the not ready port output current transformer of current transformer, the heating of power controlling cabinet continues to detect and judgement current transformer power cabinet in-cabinet temperature;
SP3, blower fan main controller controls current transformer open machine work.
Open in the machine method at wind electric converter low temperature of the present invention, in step SP2, the lowest temperature t1 of the ring heating that stagnates is 3 degrees centigrade or 4 degrees centigrade or 5 degrees centigrade.
Open in the machine method at wind electric converter low temperature of the present invention, in step SP2, the temperature upper limit t2 of the ring heating that stagnates is 15 degrees centigrade or 20 degrees centigrade or 25 degrees centigrade.
Open in the machine method at wind electric converter low temperature of the present invention, be limited to 85% or 90% on the current transformer trouble free service humidity among the step SP1.
The wind electric converter low temperature of embodiment of the present invention opens the machine method, compares with prior art, and its beneficial effect is:
1. this method can guarantee that wind electric converter in the winter time under the low temperature condition, is well heated, and guarantees the safe and reliable work of current transformer; Simultaneously; In the time of in current transformer is in the safe working temperature scope, to master controller feedback current transformer " system is ready to " signal, shortens the wind-powered electricity generation unit and open the machine process immediately; Reduce the wind-powered electricity generation unit heating stand-by period, improve wind-powered electricity generation unit generation amount;
2. this method is simple and reliable, and it is convenient to implement.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is that existing wind electric converter low temperature opens signal feedback circuit sketch map in the machine method.
Fig. 2 is that wind electric converter low temperature of the present invention opens signal feedback circuit sketch map in the machine method.
Fig. 3 is the flow chart that wind electric converter low temperature of the present invention opens a kind of embodiment of machine method.
Embodiment
As shown in Figure 2, the current transformer low temperature that opens the employing of machine method at wind electric converter low temperature of the present invention opens among the machine control circuit figure, and the blower fan master controller directly connects the not ready port x 9.18 of current transformer.
As shown in Figure 3, wind electric converter low temperature of the present invention opens the machine method and comprises the steps:
The first step; At first; Current transformer powers on, and is detected by hardware circuit then and judges current transformer control cubicle in-cabinet temperature and humidity: when in-cabinet temperature greater than a degree centigrade zero degree, cabinet in humidity less than current transformer trouble free service humidity in limited time, the uninterrupted power supply UPS of the system self-locking that powers on; Converter control system powers on, and carries out next step then.When in-cabinet temperature and humidity simultaneously or one of satisfy: in-cabinet temperature is smaller or equal to a degree centigrade zero degree; Humidity is more than or equal to prescribing a time limit on the current transformer trouble free service humidity in the cabinet; Current transformer control cubicle heating contactor is closed; Heat the contactor normally opened contact simultaneously and break off ups power output, continue to detect and judge current transformer control cubicle in-cabinet temperature and humidity.
Second step; Detect and also to judge current transformer power cabinet in-cabinet temperature: when power cabinet in-cabinet temperature during greater than degree centigrade zero degree; The not ready port output of current transformer current transformer is ready to signal, and converter control system power controlling cabinet heater t1-t2 stagnates and encircles heating, carries out next step then.When power cabinet in-cabinet temperature during smaller or equal to degree centigrade zero degree, the unripe signal of the not ready port output current transformer of current transformer, the heating of power controlling cabinet continues to detect and also judges current transformer power cabinet in-cabinet temperature.
In the 3rd step, blower fan main controller controls current transformer opens machine work.
Common above-mentioned current transformer is ready to signal and adopts high level to represent that the unripe signal of current transformer is represented with low level.
The above-mentioned t1-t2 ring heating that stagnates is meant: when the power cabinet in-cabinet temperature begins heating during less than temperature t 1, when the power cabinet in-cabinet temperature stops heating greater than in temperature t 2 time.
In step 2, the lowest temperature t1 of the ring heating that stagnates can select 3 degrees centigrade, 4 degrees centigrade, 5 degrees centigrade or other suitable lowest temperature values, and those skilled in the art can confirm suitable lowest temperature value through the limited number of time test.
Equally, in step 2, the temperature upper limit t2 of the ring heating that stagnates can select 15 degrees centigrade, 20 degrees centigrade, 25 degrees centigrade or other suitable temperature upper limits, and those skilled in the art can confirm suitable temperature upper limit through the limited number of time test.
Through selecting lowest temperature t1 and temperature upper limit t2 can constitute various stagnant ring heating-up temperature scopes of satisfying the demand, for example 3 ℃-15 ℃, 4 ℃-15 ℃, 5 ℃-15 ℃, 3 ℃-20 ℃, 4 ℃-20 ℃, 5 ℃-20 ℃, 3 ℃-25 ℃, 4 ℃-25 ℃, 5 ℃-25 ℃ etc.
In above-mentioned each embodiment, the current transformer trouble free service humidity upper limit in the step 1 can get 83%, 85%, 87%, 90% or other suitable humidity higher limits, and those skilled in the art can confirm suitable humidity higher limit through the limited number of time test.
Claims (4)
1. a wind electric converter low temperature opens the machine method, it is characterized in that, the blower fan master controller directly connects the not ready port of current transformer; This method comprises the steps:
SP1, current transformer power on; Detect and judge current transformer control cubicle in-cabinet temperature and humidity by hardware circuit: when in-cabinet temperature greater than a degree centigrade zero degree, cabinet in humidity less than current transformer trouble free service humidity in limited time; The uninterrupted power supply UPS of the system self-locking that powers on; Converter control system powers on, and carries out next step then; Otherwise current transformer control cubicle heating contactor is closed, heats the contactor normally opened contact simultaneously and breaks off ups power output, continues to detect and judge current transformer control cubicle in-cabinet temperature and humidity;
SP2, detection also judge current transformer power cabinet in-cabinet temperature: when power cabinet in-cabinet temperature during greater than degree centigrade zero degree; The not ready port output of current transformer current transformer is ready to signal; Converter control system power controlling cabinet heater t1-t2 stagnates and encircles heating, carries out next step then; Otherwise, the unripe signal of the not ready port output current transformer of current transformer, the heating of power controlling cabinet continues to detect and judgement current transformer power cabinet in-cabinet temperature;
SP3, blower fan main controller controls current transformer open machine work.
2. wind electric converter low temperature as claimed in claim 1 opens the machine method, it is characterized in that, in step SP2, the lowest temperature t1 of the ring heating that stagnates is 3 degrees centigrade or 4 degrees centigrade or 5 degrees centigrade.
3. wind electric converter low temperature as claimed in claim 1 opens the machine method, it is characterized in that, in step SP2, the temperature upper limit t2 of the ring heating that stagnates is 15 degrees centigrade or 20 degrees centigrade or 25 degrees centigrade.
4. open the machine method like the described wind electric converter low temperature of one of claim 1 to 3, it is characterized in that, be limited to 85% or 90% on the current transformer trouble free service humidity among the step SP1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039527.6A CN102570790B (en) | 2012-02-21 | 2012-02-21 | A kind of low-temperature starting method for wind power current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210039527.6A CN102570790B (en) | 2012-02-21 | 2012-02-21 | A kind of low-temperature starting method for wind power current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570790A true CN102570790A (en) | 2012-07-11 |
| CN102570790B CN102570790B (en) | 2015-08-19 |
Family
ID=46415442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210039527.6A Active CN102570790B (en) | 2012-02-21 | 2012-02-21 | A kind of low-temperature starting method for wind power current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102570790B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527555A (en) * | 2016-12-28 | 2017-03-22 | 天津瑞能电气有限公司 | Heating dehumidification circuit of converter and control method thereof |
| CN109301927A (en) * | 2018-11-14 | 2019-02-01 | 天津瑞能电气有限公司 | The started quickly at low temperature circuit of wind driven generator set converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788829A (en) * | 2009-11-27 | 2010-07-28 | 艾默生网络能源有限公司 | Wind energy converter heating and dehumidifying system |
-
2012
- 2012-02-21 CN CN201210039527.6A patent/CN102570790B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788829A (en) * | 2009-11-27 | 2010-07-28 | 艾默生网络能源有限公司 | Wind energy converter heating and dehumidifying system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527555A (en) * | 2016-12-28 | 2017-03-22 | 天津瑞能电气有限公司 | Heating dehumidification circuit of converter and control method thereof |
| CN106527555B (en) * | 2016-12-28 | 2019-02-22 | 天津瑞能电气有限公司 | The heating and dehumidification circuit of current transformer and its control method |
| CN109301927A (en) * | 2018-11-14 | 2019-02-01 | 天津瑞能电气有限公司 | The started quickly at low temperature circuit of wind driven generator set converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570790B (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102497126B (en) | Fan converter power unit driving circuit | |
| CN201811451U (en) | All-weather seamless conversion system of solar energy plus heat pump water heater | |
| CN204886560U (en) | A intelligent economize on electricity system for cold rolling main electric machine cooling fan | |
| CN109358672A (en) | A kind of low-temperature heating system, header box and photovoltaic generating system | |
| CN102570790A (en) | Low-temperature starting method for wind power current transformer | |
| US20170250535A1 (en) | Control method for power control system, power control system, and power control apparatus | |
| CN107421065B (en) | A kind of air conditioning control device and its control method | |
| CN202995506U (en) | Mould-heating control system | |
| CN203324854U (en) | Heat tracing cable control system of common enclosure bus | |
| CN201448193U (en) | Temperature protection device of master control system of wind driven generator | |
| CN204231240U (en) | Energy-saving scaled bulb tubular hydraulic generator cooling control system | |
| CN105867493A (en) | Temperature and humidity controller | |
| CN201583854U (en) | Pipeline variable-frequency heating intelligent control cabinet | |
| CN206361980U (en) | A kind of solar water heater water-temperature based on fuzzy control automatically adjusts device | |
| CN203827274U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and WIFI transmission | |
| CN104104311A (en) | Photovoltaic power generation control system | |
| CN205004657U (en) | Switch board cooling device based on bellows principle | |
| CN203827277U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and RFID transmission | |
| CN203827280U (en) | Remote monitoring type photovoltaic junction box based on Hall sensor and WIFI transmission | |
| CN206131836U (en) | Heat energy cascade utilization system | |
| CN204859597U (en) | Crystal growth stove induction heating power coil protection device | |
| CN204945324U (en) | Control series products batch quiescent current test circuit | |
| CN214122801U (en) | Novel temperature control device for main control room and distribution room of transformer substation | |
| CN203827276U (en) | Remote monitoring type photovoltaic junction box based on semiconductor temperature measurement and one-way communication protocol | |
| CN203824668U (en) | Remote monitoring type photovoltaic conjunction box based on thermistor temperature measurement and RFID transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town village official Liuzhou Industrial Zone No. 5 Building second layer 1-3 Applicant after: Shenzhen's standing grain hopes electric limited company Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xili Town, Dragon Village Second Industrial District 5 Building 5 floor Applicant before: Shenzhen Hewang Electric Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHENZHEN HEWANG ELECTRIC CO., LTD. TO: SHENZHEN HOPEWIND ELECTRIC CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |