LCT通讯规约(中英文版)

1、LCT 微机励磁控制器LCT Digital Excitation Controller通讯规约Communication ProtocolLCT微机励磁控制器与 DCS分散控制系统的通讯协议 The protocolof LCT digital excitation controller and DCS separatedcontrolling system、通讯标准 Communication standard采用RS-232串口；通讯波特率9600bps； 3线通讯方式数据出、数据入、地。 Adopt RS-232 serial port;9600bps com muni cati ng

2、 baud rate; three-l ine com muni cat ing mode(data output, data in put, earth).二、通讯协议 Communication protocol采用 MODBUS、议，RTl编码方式。Adopt Modbus protocol, RTU coding mode.采用主从式通讯方式，DCS系统为主站，励磁控制器为从站。Adopt master-slaving com muni cati on mode, defi ne DCS system as master stati on ， digital excitati on c

3、on troller as slave statio n.三、通讯数据格式 Communication data mode1位起始位，8位数据位，没有奇偶校验，2位停止位。1 bit as start bit, 8 bit as data bit, non odd and eve n check ing, 2 bit as stop bit.Error check ingx16+X5+X+1.错误检测米用 CRC16校验方式，校验多项式为 X +X +X+1adopts CRC16 test mode, testi ng mult ino mial is四、数据包格式 Data package

4、 format起始Start目的地址Dest in ati on address功能码Fun cti on code数据DataCRC校 验 CRC check ing结束EndT1T2T3T41字节1 Byte1字节1 ByteN字节N Byte2字节2 ByteT1T2T3T4T1T2T3T4时间长度，由应用程序控制，两个数据包之间的最小时间间隔为传送 3.5 个字符的发送时间约 4msJ o Time len gth, con trolled by applicati on, the least time distanee between two data package is as l

5、ong as the sending time of 3.5 character(about 4ms).目的地址Destination address : DCS主站要访问的从站地址。如果励磁调节器为 双通道结构，那么占用两个从站地址；假设励磁调节器为单通道结构，那么占用一个从站地 址。The slave address which the DCSmaster station should call on. If excitation regulator is two-cha nnel structure, en gross two slave stati on addresses; Ifsi

6、n gle-cha nnel structure, the n use one slave statio n address.功能码Function code：主站告知从站所要执行的操作代码。Master station giveslave station the operation code it will carry out.数据Data:传送的数据，长度为 N字节。Sent data, length is N byte.CR(校验CROhecking :前面所有数据的CR(校验值，长度为2字节。The CRCesting value of above all data, le ngth

7、is 2 bytes.五、功能码定义 Function code definition为保证微机励磁调节装置的可靠运行，调节装置只支持DCSfc站的读命令，不允许DCSfc站对调节装置进行控制。调节装置所支持的功能码如下：To guara ntee excitation regulator reliable running,regulatingequipment only support DCS masterstati on readi ng comme nd, con troll ingregulati ng equipme nt by DCS masterstati on is forbi

8、dde n. The fun cti on code supported is follow ing:02: DCS主站读微机励磁调节装置的开关量数据。DCS master station readexcitation regulator s digital data.03： DCS主站读微机励磁调节装置的模拟量的额定量数据。DCSmaster station readexcitation regulator s analog rated data.04: DCS主站读微机励磁调节装置的模拟量数据。DCS master station readexcitation regulator s an

9、alog data.六、数据传送格式 Data sending format1. 读开关量数据 Read digital dataDCS主站发送微机励磁调节装置的数据格式8个字节：The data format which DCSmaster station to send excitation regulator(8 bytes):从站地址Slave statio n address 功能码02Function code 02首地址HiFirst address Hi首地址LoFirst address Lo点数HiPoint nu mber Hi点数LoPoint nu mber LoCR

10、C校验LoCRC checking LoJCRC校验HiCRC checking Hi微机励磁调节装置发送 DCS主站的数据格式：The data format which excitation regulator use to send DCS master stati on:从站地址Slave statio n address功能码02Function code 02字节数NByte number N数据1Datal数据NDataNCRC校验LoCRC checking LoCRC校验HiCRC checking Hi微机励磁调节装置向DCS主站发送的开关量有8个字节，依次为Kairu1、

11、Kairu2、 Kairu3、Facru、Kaicu1、Kaicu2、Kaicu3、Faccu，其中前 4 个字节为输入开关量，后 4个字节为输出开关量，首地址为01Ho K系列的开关量为送出装置或由装置外送入的开 关量，F系列的开关量只送至控制器面板或只由控制器面板送入的开关量。The digitalexcitationregulator send to DCSmaster station has 8 bytes, in turn is Kairu1,Kairu2, Kairu3, Fairu, Kaicu1, Kaicu2, Kaicu3, Faccu. There into the fi

12、rst four bytes are in put digital, the other four are output digital, first address is01H. K series digital are digital to send out of the equipme ntor send into theequipment from outside, F series digital are digital only sent to controller faceplate or sent by con troller faceplate.各个开关量的定义如下：Each

13、 digitaldefi niti on is followi ng:励磁控制器输入 开关量 Kairu1 定义 The definition of Digital excitationcon troller in put digital data Kairu1:Bit7=1 :备用DI8Spare DI8Bit6=1 :起励Start excitati onBit5=1：出口断路器合闸Oil breaker closeBit4=1：发电机出口保护动作gen erator protect ing operati onBit3=1 :中控减磁Cen ter room lower excitati

14、 onBit2=1 :中控增磁Cen ter room raise excitati onBit1=1：水电模式下为“ 95%转速到it is“ %95 rotor speed to under hydroelectric modeBit0=1 :中控运行Cen ter room run励磁控制器输入 开关量 Kairu2 定义 The definition of Digital excitation con troller in put digital data Kairu2:Bit7=1： 2#功率柜快熔2# Rectifier fuse bornBit6=1： 2#功率柜风机故障2# R

15、ectifier fan faultBit5=1： 1#功率柜快熔1# Rectifier fuse bornBit4=1： 1#功率柜风机故障1# Rectifier fan faultBit3=1： PSS投入PSS puts onBit2=1 :发电机灭磁断路器动作Generator field deexcitation operationBit1=1：双通道模式下为“它套从柜运行It is“ the other is slave run under two-channel modeBit0=1：双通道模式下为“它套正常It is“ the other is OK under two-c

16、hannel mode励磁控制器输入开关量Kairu3 定义 The definition of Digital excitationcon troller in put digital data Kairu3:Bit7=1：备用 DI24Spare DI24Bit6=1：备用 DI23Spare DI23Bit5=1：备用 DI22Spare DI22Bit4=1 :投入跟踪系统电压功能Switch to track system voltage fun ctio nBit3=1:投入恒CO调节功能Switch to con sta ntCOS regulati on fun cti onB

17、it2=1：投入恒无功调节功能Switch to con sta nt reactive power regulati on fun ctio nBit1=1： 3#功率柜快熔3#Rectifier fuse bornBit0=1： 3#功率柜风机故障3# Rectifier fan fault励磁控制器面板输入开关量Facru定义The definition of Digital excitationcon troller faceplate in put digital data Facru:Bit7=1 :信号复归Signal resetBit6=1：就地减Local lower exc

18、itatio nBit5=1：就地增Local raise excitati onBit41/0 :就地置位投/就地置位退Local quickly set excitation/Local offquickly set excitationBit31/0 : PSS投/PSS 退Pss puts on/Pss puts offBit21/0 :自动运行/手动运行Auto run/Manual runBit11/0 :就地运行/就地退出Local run/Local quitBit01/0 :中控/就地Cen ter room/local励磁控制 器输出 开关量 Kai cu1 定义 The

19、definitionof Digital excitationcon troller output digital data Kaicul:Bit7调节器故障退出Regulator fault quitBit6起励失败Start excitation failBit5低励限制动作Under excitation limit doneBit4过流限制动作Over excitation limit doneBit3自动运行故障切手动运行动作Auto run fault switch to manual run doneBit2V/F限制动作V/F limit doneBit1脉冲出错Pulse e

20、rrorBit0PT熔丝熔断PT fuse failure励磁控制器输出开关量Kai cu2 定义 The definition of Digital excitationcon troller output digital data Kaicu2:Bit7起励控制投起励回路Start excitation switch to start excitation circuitBit6AVR故障跳调节器直流输出开关AVR fault to ope n regulator DC output breakerBit51#功率柜故障1# Rectifier faultBit42#功率柜故障2# Rec

21、tifier faultBit33#功率柜故障3# Rectifier faultBit2DEH言号：过励磁动作DEH signal : over excitation doneBit1DEH言号：最大励磁限制动作；其他为强励动作DEHsignal : maxexcitationlimit done； other is force excitationdoneBit0小机无刷励磁方式为：调节器输出电流为0;其它励磁方式为DEHft号：V/F动作The non-brush machine mode : regulator output current is 0；other excitation

22、mode is DEH signal: V/F done励磁控制器输出开关量Kaicu3 定义 The definition of Digital excitationcon troller output digital data Kaicu3:Bit7手动运行Manual runBit6调试状态中频励磁电源使用 50Hz同步励磁电源Used on in termediate freque ncy gen erator group whe n test and overhaul without in termediate freque ncy electrical source, use 50

23、HZ electricalsource to replace to connect 50HZ insyn chro nous circuit.Bit5退出运行Quit runningBit4备用DO21 Spare DO21Bit3备用DO20 Spare DO20Bit2=1：双通道模式下本套为“从柜运行The set is slave un der two-cha nnel mode.Bit1本套正常The set is OK.Bit0自动运行Auto run励磁控制器面板输出信号开关量Faccu定义The definitionof Digitalexcitati on con troll

24、er faceplate output digital data Faccu:Bit7装置出错Equipme nt errorBit6减磁Lower excitati onBit5增磁Raise excitati onBit4置位投入Quickly setting excitation puts on.Bit3PSS投入 PSS puts on.Bit21/0 :自动/手动 Auto/Ma nualBit11/0 : 运行/退出Run/QuitBit01/0 :中控/就地Cen ter room/local2. 读模拟量的额定量数据 Read analog rating dataDCS主站发送

25、微机励磁调节装置的数据格式8个字节The data format DCSmasterstation to send excitation regulating equipment(8 bytes):从站地址Slave statio n address功能码03Function code 03首地址HiFirst address Hi首地址LoFirst address Lo点数HiPoint nu mber Hi点数LoPoint nu mber LoCRC校验LoCRC checking LoCRC校验HiCRC checking Hi微机励磁调节装置发送DCS主站的数据格式The data

26、 format excitation regulator use to send DCS master stati on:从站地址Slave statio n address 功能码03Function code 03字节数2NByte number 2N数据1 HiData1(Hi)数据1 LoData1(Lo)数据N HiData N(Hi)数据N LoData N(Lo)CRC校验LoCRC checking LoCRC校验HiCRC checking Hi微机励磁调节装置向DCS主站发送的模拟量的额定值有 5个字，10个字节。依次为 Vfref、Vf ref、Iref、Pref、Qre

27、f，首地址为01H,其定义分别为：发电机励磁专用 电压互感器之额定发电机电压采样值、发电机仪表用电压互感器之额定发电机电压采样值、发电机电流互感器之额定发电机电流采样值、额定发电机有功功率采样值、额定发 电机无功功率采样值。另外发电机直流量如发电机转子电压、电流及调节器输出电流 等的额定采样值统一规定为1000H,因此不再向DC3站发送该量。The analog which excitation regulator send to DCSmaster station has 5 words, 10 bytes. They are in turn Vfref, Vf ref, Iref, Pre

28、f, Qref,the first address is 01H,the definitions are: gen erator excitati on specific PTs rati ng gen erator voltage sampli ng value, gen erator in strume nt PT s rati ng gen erator voltage sampli ng value, gen erator curre nt tran sformers rati ng gen erator curre nt value, rati ng gen erator activ

29、epower sampli ng value, rati ng gen erator reactive power sampli ng. In additi on the rati ng sampli ng value of gen erator DC data (such as gen erator rotor voltage, current and regulator output current and so on) is define as 1000H, so it wouldn t send the rati ng data to DCS master stati on.3. 读模

30、拟量数据 Read analog dataDCS主站发送微机励磁调节装置的数据格式8个字节The data format DCSmasterstation to send excitation regulator(8 bytes):从站地址Slave statio n address 功能码04Function code 04 首地址HiFirst address Hi首地址LoFirst address Lo点数HiPoint nu mber Hi点数LoPoint nu mber LoCRC校验LoCRC checking LoCRC校验HiCRC checking Hi微机励磁调节装置发

31、送DCS主站的数据格式The data format excitation regulator use to send DCS master stati on:从站地址Slave statio n address功能码04Function code 04字节数2NByte number 2N数据1 HiData1(Hi)数据1 LoData1(Lo)数据N HiData N (Hi)数据N LoData N (Lo)CRC校验LoCRC checking LoCRC校验HiCRC checking Hi微机励磁调节装置向DCa站发送的模拟量有11个字，22个字节。依次为Vf、Vf、If、P、Q

32、 Vfd、Ifd、Iffd、Vref、Href、a，首地址为01H,其定义分别为：发电机 励磁专用电压互感器之发电机电压、发电机仪表用电压互感器之发电机电压、发电机电 流、发电机有功、发电机无功、发电机转子电压、发电机转子电流、调节器输出电流、 发电机自动给定、发电机手动给定、可控硅开放角。另外 Vref 的基准值为 Vfref ；Href 的基准值为ioooh无刷励磁时以调节器输出电流为单位、其它励磁方式以发电机转子 电流为单位；a的值按4000H对应90o为基准。The analog data excitation regulator send to DCSmaster station h

33、as 11 words, 22 bytes. They are in turn Vf, Vf, If, P, Q, Vfd, Ifd, Iffd, Vref, Href, a ,the first address is 01H,the definitions are: generator excitation specific PTsgenerator voltage sampling value, generator instrument PTsgenerator voltagesampling value, generator current, generator active power

34、, generator reactive power, generator rotor voltage, generator rotor current, regulator output current, generator auto reference voltage, generator manual reference current, SCR opening angle. In addition Verf reference value is Vfref; Href reference value is 1000H, when non-brush excitation system

35、use regulator output current, other excitation system use generator rotor current; as value use the reference that 4000h correspond 90 o. 4例子 For example模拟量换算例子：以某125MW发电机组为例。Analog data conversion example: set 125MW generator group as example.发电机额定有功 Generator rating active power ：PN125MW发电机额定电压 Ge

36、nerator rating voltage ：VfN13.8KV发电机额定励磁电压 Generator rating excitation voltage：VfdN265V发电机额定励磁电流 Generator rating excitation current：I fdN 1650A调节器额定励磁电流 Regulator rating excitation currentI ffdN60A发电机额定功率因数 Generator rating power factorCos/ n=0.85 通过计算 By calculation: 发电机额定无功 Generator rating react

37、ive powerQN77.47MVAR发电机额定定子电流 Generator rating stator current ：I fN 6.152KA发电机 PT 变比为 Generator PT tramsformation ratio is ：13.8KV/100V发电机 CT 变比为 Generator CT tramsformation ratio is ：8KA/5A额定发电机 CT 电流为 Rati ng gen erator CT curre nt is :3.845A励磁调节器额定交流采样量各值为 Excitation regulator rating ACsampling e

38、ach values are :测量 PT 的采样值为 Specific PT sampling value is : 334DH仪表 PT 的采样值为 Instrument PT sampling value is : 334DHCT 的采样值为 CT sampling value is：3D4AH发电机有功的采样值为 Generator active power sampling value is ：37ADH 发电机无功的采样值为 Generator reactive power sampling value is：2281H通过 03功能码读模拟量的额定量数据得到 Use 03 fun

39、ction code to read analog rating data and get:Vfref334DHVfref334DHI ref3D4AHPref37ADHQref2281H通过04功能码读模拟量的数据依次得到 Vf 、Vf、If 、P、Q、Vfd、Ifd、I ffd、Vref、H ref、a的采样值，换算成实际值的方法如下： Use04 function code to read analog data and get sampling value of Vf ,Vf, If, P, Q,Vfd, Ifd, Iffd ,Vref, Href,a in turn ， the method which conversing practical value is as below: 1、发电机电压 Generator vo