風(fēng)力發(fā)電機組的控制系統(tǒng)是綜合性控制系統(tǒng),控制系統(tǒng)不僅要監(jiān)視機組運行參數(shù),對機組進行并網(wǎng)與脫網(wǎng)控制,而且還要根據(jù)風(fēng)速與風(fēng)向的變化,對機組進行優(yōu)化控制。CAN總線是一種支持分布式控制系統(tǒng)和實時性控制的串行通信網(wǎng)絡(luò)。其以多主機方式工作,通信速率可達1mbps。
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can總線的上述特點正適用于風(fēng)力發(fā)電機控制系統(tǒng)的獨特要求,因此,本文提出一種基于can總線架構(gòu)的風(fēng)力發(fā)電控制系統(tǒng)??刂葡到y(tǒng)中各模塊之間通過can總線實時交換數(shù)據(jù),實現(xiàn)主控系統(tǒng)及各控制節(jié)點間的實時通信與數(shù)據(jù)交換。文章在分析了can協(xié)議及can獨立控制器sja1000工作原理和讀寫邏輯的基礎(chǔ)上,設(shè)計了can接口,給出了硬件原理圖,分析了can通訊程序流程及系統(tǒng)中信號和控制指令的通訊幀格式。另外,本文還給出了基于嵌入式qt的應(yīng)用程序的設(shè)計方案。
2 系統(tǒng)結(jié)構(gòu)與功能
本文基于分散控制系統(tǒng)理念,針對雙饋型變速恒頻風(fēng)力發(fā)電機組設(shè)計控制系統(tǒng)。雙饋型風(fēng)電機組控制系統(tǒng)基本結(jié)構(gòu)如圖1所示。
Yokogawa EXA SC SC400-C-U-2-E*A Conductivity Monitor 110VAC
Yokogawa FS40-V22 TP Conductivity Sensor
Carel 98C460C001 Controler w/Carel 98C460C006 Interface Board
Honeywell SPS-A100D-VAMS Sensor 18-40V Position Sensor w/Analog Output
Entegris ES-1C-MD-XX Single Channel Control Module
Omron ID Read/Write Head V600-H11
Entegris ES-1C-CA-03 Espy 3 Meter Sensor Probe Assembly Replacement
Entegris ESPY Single Channel Electronic Control Module ES-1C-MD-XX
New Ion Ionization Control Sensor 5200-SR
SeaMetrics Analog Sensor Transmitter 4 to 20 mA AO55
New Entegris ES-1C-CA-1-1 Sensor Probe
NIB Entegris ES02-0588-0308-001 Down Tube 1/2" Probe
Telemecanique Amplifier XUG-H1401222
New IFM Efector Flange Plate E43001
Omron ID Read/Write Head V600-H11 w/2M Cable
Siemens Milltronics Remote Mounted Pre-Amplifier RMA-2
Milltronics Motion Failure Alarm ALARM-4P
Mettler Toledo Conductivity Module for M700 COND 7700
New Keyence OP-51691 L-Shaped Relay Connector
New Omron ID Read/Write Head V600-H11
SUNX ID-PTC1 Optical Identification Terminal Head
Idec AVLW49902D-R-24V E-Stop Pushbutton 120-600VAC 110-600VDC 1NO 3NC
Allen Bradley 800T-FX-D4 Emergency Stop Switch, 600V Max
Allen Bradley 800H-FRXT-D4 Emergency Stop Push Button, 600V Max
Telemecanique ZBE-102 Emergency Stop Pushbutton 1 NC Contact
Lot of 2 Telemecanique DA 01 1/4 Twist Maintained E-Stop Pushbutton 500VAC 8A
Moeller M22-PV Emergency Stop Switch, E F Contact, Normally Closed, 22mm
New Allen Bradley 800G-MPE Series A Hazardous Location IP66 E-STOP Button
New Schneider Electric 9001SKR9H13 Switch Industrial Pushbutton 600VAC , 10Amps
New Eaton / Rittal E-Stop Pushbutton Enclosure Kit w / 2NC ContactsIC695ETM001
JACP-921900 CP-9200SH/SVA
MMC-BDP081PNA
MMS6312
MX-CS101-401
PCD2.M110
PCD4.M120
PCI-6111
PCI-6224
PCI-6509
RDC2
SG2K-1T
SST-PFB-CLX
TI435-CPU
DSSR122 48990001-NK
1747-L543
CP60
FBM201
FBM206
FBM217
FBM231
FBM237
PF3S-BP13
PF3S-PSA1
Allen Bradley 800T-FXJ6A5 Series-T Push/Pull Emergency Stop w/Guard
Festo SVS-4-1/8 Maintained Red Pushbutton 50-116 PSI
Idec AVW000 E-Stop Lighted Pushbutton 1NO 3NC
Idec AOW401-R Red Momentary Pushbutton 120-600VAC
Lot of 4 WEG CSW-BEG Twist-Release Red Pushbutton, 22mm
New BACO Controls L22ED01-1ER01 Maintained Twist Pushbutton
圖1 雙饋型風(fēng)電機組控制系統(tǒng)基本結(jié)構(gòu)