LCT通訊規(guī)約(中英文版)

1、LCT 微機勵磁控制器LCT Digital Excitation Controller通訊規(guī)約Communication ProtocolLCT微機勵磁控制器與DCS分散控制系統(tǒng)的通訊協(xié)議The protocol of LCT digital excitation controller and DCS separated controlling system一、 通訊標(biāo)準(zhǔn) Communication standard采用RS-232串口；通訊波特率9600bps；3線通訊方式數(shù)據(jù)出、數(shù)據(jù)入、地。Adopt RS-232 serial port;9600bps communicating ba

2、ud rate; three-line communicating mode(data output, data input, earth).二、 通訊協(xié)議 Communication protocol采用MODBUS協(xié)議，RTU編碼方式。Adopt Modbus protocol, RTU coding mode.采用主從式通訊方式，DCS系統(tǒng)為主站，勵磁控制器為從站。Adopt master-slaving communication mode, define DCS system as master station， digital excitation controller as sl

3、ave station.三、 通訊數(shù)據(jù)格式 Communication data mode1位起始位，8位數(shù)據(jù)位，沒有奇偶校驗，2位停止位。1 bit as start bit, 8 bit as data bit, non odd and even checking, 2 bit as stop bit.錯誤檢測采用CRC16校驗方式，校驗多項式為X16+X15+X2+1。Error checking adopts CRC16 test mode, testing multinomial is X16+X15+X2+1.四、 數(shù)據(jù)包格式 Data package format起始Start目

4、的地址Destination address功能碼Function code數(shù)據(jù)DataCRC校驗CRC checking結(jié)束EndT1T2T3T41字節(jié)1 Byte1字節(jié)1 ByteN字節(jié)N Byte2字節(jié)2 ByteT1T2T3T4T1T2T3T4：時間長度，由應(yīng)用程序控制，兩個數(shù)據(jù)包之間的最小時間間隔為傳送3.5個字符的發(fā)送時間約4ms。Time length, controlled by application, the least time distance between two data package is as long as the sending time of 3.5

5、character(about 4ms).目的地址Destination address：DCS主站要訪問的從站地址。如果勵磁調(diào)節(jié)器為雙通道結(jié)構(gòu)，則占用兩個從站地址；假設(shè)勵磁調(diào)節(jié)器為單通道結(jié)構(gòu)，則占用一個從站地址。 The slave address which the DCS master station should call on. If excitation regulator is two-channel structure, engross two slave station addresses; If single-channel structure, then use one

6、slave station address.功能碼Function code：主站告知從站所要執(zhí)行的操作代碼。 Master station give slave station the operation code it will carry out.數(shù)據(jù)Data：傳送的數(shù)據(jù)，長度為N字節(jié)。Sent data, length is N byte.CRC校驗CRC checking：前面所有數(shù)據(jù)的CRC校驗值，長度為2字節(jié)。The CRC testing value of above all data, length is 2 bytes.五、 功能碼定義 Function code defi

7、nition為保證微機勵磁調(diào)節(jié)裝置的可靠運行，調(diào)節(jié)裝置只支持DCS主站的讀命令，不允許DCS主站對調(diào)節(jié)裝置進(jìn)行控制。調(diào)節(jié)裝置所支持的功能碼如下：To guarantee excitation regulators reliable running, regulating equipment only support DCS master stations reading commend, controlling regulating equipment by DCS master station is forbidden. The function code supported is foll

8、owing:02：DCS主站讀微機勵磁調(diào)節(jié)裝置的開關(guān)量數(shù)據(jù)。DCS master station read excitation regulators digital data.03：DCS主站讀微機勵磁調(diào)節(jié)裝置的模擬量的額定量數(shù)據(jù)。DCS master station read excitation regulators analog rated data.04：DCS主站讀微機勵磁調(diào)節(jié)裝置的模擬量數(shù)據(jù)。DCS master station read excitation regulators analog data.六、 數(shù)據(jù)傳送格式 Data sending format1 讀開關(guān)量數(shù)據(jù)

9、 Read digital dataDCS主站發(fā)送微機勵磁調(diào)節(jié)裝置的數(shù)據(jù)格式8個字節(jié)：The data format which DCS master station to send excitation regulator(8 bytes): 從站地址Slave station address功能碼02Function code02首地址HiFirst addressHi首地址LoFirst addressLo點數(shù)HiPoint numberHi點數(shù)LoPoint numberLoCRC校驗LoCRC checkingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置發(fā)送DCS主

10、站的數(shù)據(jù)格式：The data format which excitation regulator use to send DCS master station:從站地址Slave station address功能碼02Function code02字節(jié)數(shù)NByte numberN數(shù)據(jù)1Data1數(shù)據(jù)NDataNCRC校驗LoCRC checkingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置向DCS主站發(fā)送的開關(guān)量有8個字節(jié)，依次為Kairu1、Kairu2、Kairu3、Facru、Kaicu1、Kaicu2、Kaicu3、Faccu，其中前4個字節(jié)為輸入開關(guān)量，后4個

11、字節(jié)為輸出開關(guān)量，首地址為01H。K系列的開關(guān)量為送出裝置或由裝置外送入的開關(guān)量，F(xiàn)系列的開關(guān)量只送至控制器面板或只由控制器面板送入的開關(guān)量。The digital excitation regulator send to DCS master station has 8 bytes, in turn is Kairu1, Kairu2, Kairu3, Fairu, Kaicu1, Kaicu2, Kaicu3, Faccu. Thereinto the first four bytes are input digital, the other four are output digital

12、, first address is 01H. K series digital are digital to send out of the equipment or send into the equipment from outside, F series digital are digital only sent to controller faceplate or sent by controller faceplate.各個開關(guān)量的定義如下：Each digitals definition is following:勵磁控制器輸入開關(guān)量Kairu1定義The definition

13、of Digital excitation controller input digital data Kairu1:Bit7=1：備用DI8 Spare DI8Bit6=1：起勵Start excitationBit5=1：出口斷路器合閘Oil breaker closeBit4=1：發(fā)電機出口保護(hù)動作generator protecting operationBit3=1：中控減磁Center room lower excitationBit2=1：中控增磁Center room raise excitationBit1=1：水電模式下為“95轉(zhuǎn)速到” it is “%95 rotor s

14、peed to” under hydroelectric modeBit0=1：中控運行Center room run勵磁控制器輸入開關(guān)量Kairu2定義The definition of Digital excitation controller input digital data Kairu2:Bit7=1：2#功率柜快熔 2# Rectifier fuse bornBit6=1：2#功率柜風(fēng)機故障 2# Rectifier fan faultBit5=1：1#功率柜快熔1# Rectifier fuse bornBit4=1：1#功率柜風(fēng)機故障1# Rectifier fan faul

15、tBit3=1：PSS投入PSS puts onBit2=1：發(fā)電機滅磁斷路器動作Generator field deexcitation operationBit1=1：雙通道模式下為“它套從柜運行” It is “the other is slave run” under two-channel modeBit0=1：雙通道模式下為“它套正?！盜t is “the other is OK” under two-channel mode勵磁控制器輸入開關(guān)量Kairu3定義The definition of Digital excitation controller input digital

16、 data Kairu3:Bit7=1：備用DI24Spare DI24Bit6=1：備用DI23 Spare DI23Bit5=1：備用DI22 Spare DI22Bit4=1：投入跟蹤系統(tǒng)電壓功能Switch to track system voltage functionBit3=1：投入恒COS調(diào)節(jié)功能Switch to constant COS regulation functionBit2=1：投入恒無功調(diào)節(jié)功能Switch to constant reactive power regulation functionBit1=1：3#功率柜快熔3# Rectifier fuse

17、bornBit0=1：3#功率柜風(fēng)機故障3# Rectifier fan fault勵磁控制器面板輸入開關(guān)量Facru定義The definition of Digital excitation controller faceplate input digital data Facru:Bit7=1：信號復(fù)歸Signal resetBit6=1：就地減Local lower excitationBit5=1：就地增Local raise excitationBit41/0：就地置位投/就地置位退Local quickly set excitation/Local quickly set exc

18、itation offBit31/0：PSS投/PSS退Pss putson/Pss puts offBit21/0：自動運行/手動運行Auto run/Manual runBit11/0：就地運行/就地退出Local run/Local quitBit01/0：中控/就地Center room/local勵磁控制器輸出開關(guān)量Kaicu1定義The definition of Digital excitation controller output digital data Kaicu1:Bit7調(diào)節(jié)器故障退出Regulator fault quitBit6起勵失敗Start excitati

19、on failBit5低勵限制動作Under excitation limit doneBit4過流限制動作Over excitation limit doneBit3自動運行故障切手動運行動作Auto run fault switch to manual run doneBit2V/F限制動作V/F limit doneBit1脈沖出錯Pulse errorBit0PT熔絲熔斷PT fuse failure勵磁控制器輸出開關(guān)量Kaicu2定義The definition of Digital excitation controller output digital data Kaicu2:B

20、it7起勵控制投起勵回路Start excitation switch to start excitation circuitBit6AVR故障跳調(diào)節(jié)器直流輸出開關(guān)AVR fault to open regulator DC output breakerBit51#功率柜故障1# Rectifier faultBit42#功率柜故障2# Rectifier faultBit33#功率柜故障3# Rectifier faultBit2DEH信號：過勵磁動作DEH signal：over excitation doneBit1DEH信號：最大勵磁限制動作；其他為強勵動作DEH signal：max

21、 excitation limit done；other is force excitation doneBit0小機無刷勵磁方式為：調(diào)節(jié)器輸出電流為0；其它勵磁方式為DEH信號：V/F動作The non-brush machine mode：regulator output current is 0；other excitation mode is DEH signal：V/F done勵磁控制器輸出開關(guān)量Kaicu3定義The definition of Digital excitation controller output digital data Kaicu3:Bit7手動運行Man

22、ual runBit6調(diào)試狀態(tài)中頻勵磁電源使用50Hz同步勵磁電源Used on intermediate frequency generator group when test and overhaul without intermediate frequency electrical source, use 50HZ electrical source to replace to connect 50HZ in synchronous circuit.Bit5退出運行Quit runningBit4備用DO21Spare DO21Bit3備用DO20Spare DO20Bit2=1： 雙通

23、道模式下本套為“從柜運行” The set is slave under two-channel mode.Bit1本套正常The set is OK.Bit0自動運行Auto run勵磁控制器面板輸出信號開關(guān)量Faccu定義The definition of Digital excitation controller faceplate output digital data Faccu:Bit7裝置出錯Equipment errorBit6減磁Lower excitationBit5增磁Raise excitationBit4置位投入Quickly setting excitation p

24、uts on.Bit3PSS投入PSS puts on.Bit21/0：自動/手動 Auto/ManualBit11/0： 運行/退出 Run/QuitBit01/0：中控/就地 Center room/local2 讀模擬量的額定量數(shù)據(jù) Read analogs rating dataDCS主站發(fā)送微機勵磁調(diào)節(jié)裝置的數(shù)據(jù)格式8個字節(jié) The data format DCS master station to send excitation regulating equipment(8 bytes):從站地址Slave station address功能碼03Function code03首地

25、址HiFirst addressHi首地址LoFirst addressLo點數(shù)HiPoint numberHi點數(shù)LoPoint numberLoCRC校驗LoCRC checkingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置發(fā)送DCS主站的數(shù)據(jù)格式The data format excitation regulator use to send DCS master station:從站地址Slave station address功能碼03Function code03字節(jié)數(shù)2NByte number2N數(shù)據(jù)1HiData1(Hi)數(shù)據(jù)1LoData1(Lo)數(shù)據(jù)NHi

26、Data N(Hi)數(shù)據(jù)NLoData N(Lo)CRC校驗LoCRC checkingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置向DCS主站發(fā)送的模擬量的額定值有5個字，10個字節(jié)。依次為Vfref、Vfref、Iref、Pref、Qref，首地址為01H，其定義分別為：發(fā)電機勵磁專用電壓互感器之額定發(fā)電機電壓采樣值、發(fā)電機儀表用電壓互感器之額定發(fā)電機電壓采樣值、發(fā)電機電流互感器之額定發(fā)電機電流采樣值、額定發(fā)電機有功功率采樣值、額定發(fā)電機無功功率采樣值。另外發(fā)電機直流量如發(fā)電機轉(zhuǎn)子電壓、電流及調(diào)節(jié)器輸出電流等的額定采樣值統(tǒng)一規(guī)定為1000H，因此不再向DCS主站發(fā)送該量。

27、The analog which excitation regulator send to DCS master station has 5 words, 10 bytes. They are in turn Vfref, Vfref, Iref, Pref, Qref,the first address is 01H,the definitions are: generator excitation specific PTs rating generator voltage sampling value, generator instrument PTs rating generator v

28、oltage sampling value, generator current transformers rating generator current value, rating generator active power sampling value, rating generator reactive power sampling. In addition the rating sampling value of generator DC data (such as generator rotor voltage, current and regulator output curr

29、ent and so on) is define as 1000H, so it wouldnt send the rating data to DCS master station.3 讀模擬量數(shù)據(jù) Read analog dataDCS主站發(fā)送微機勵磁調(diào)節(jié)裝置的數(shù)據(jù)格式8個字節(jié)The data format DCS master station to send excitation regulator(8 bytes):從站地址Slave station address功能碼04Function code04首地址HiFirst addressHi首地址LoFirst addressLo點

30、數(shù)HiPoint numberHi點數(shù)LoPoint numberLoCRC校驗LoCRC checkingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置發(fā)送DCS主站的數(shù)據(jù)格式The data format excitation regulator use to send DCS master station:從站地址Slave station address功能碼04Function code04字節(jié)數(shù)2NByte number2N數(shù)據(jù)1HiData1(Hi)數(shù)據(jù)1LoData1(Lo)數(shù)據(jù)NHiData N (Hi)數(shù)據(jù)NLoData N (Lo)CRC校驗LoCRC c

31、heckingLoCRC校驗HiCRC checkingHi微機勵磁調(diào)節(jié)裝置向DCS主站發(fā)送的模擬量有11個字，22個字節(jié)。依次為Vf、Vf 、If、P、Q、Vfd、Ifd、Iffd、Vref、Href、，首地址為01H，其定義分別為：發(fā)電機勵磁專用電壓互感器之發(fā)電機電壓、發(fā)電機儀表用電壓互感器之發(fā)電機電壓、發(fā)電機電流、發(fā)電機有功、發(fā)電機無功、發(fā)電機轉(zhuǎn)子電壓、發(fā)電機轉(zhuǎn)子電流、調(diào)節(jié)器輸出電流、發(fā)電機自動給定、發(fā)電機手動給定、可控硅開放角。另外Vref的基準(zhǔn)值為Vfref；Href的基準(zhǔn)值為1000H，無刷勵磁時以調(diào)節(jié)器輸出電流為單位、其它勵磁方式以發(fā)電機轉(zhuǎn)子電流為單位；的值按4000H對應(yīng)90&

32、#186;為基準(zhǔn)。The analog data excitation regulator send to DCS master station has 11 words, 22 bytes. They are in turn Vf, Vf, If, P, Q, Vfd, Ifd, Iffd, Vref, Href, ,the first address is 01H,the definitions are: generator excitation specific PTs generator voltage sampling value, generator instrument PTs

33、generator voltage sampling value, generator current, generator active power, 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

34、 is Vfref; Href reference value is 1000H, when non-brush excitation system use regulator output current, other excitation system use generator rotor current; s value use the reference that 4000h correspond 90º.4 例子 For example模擬量換算例子：以某125MW發(fā)電機組為例。Analog data conversion example: set 125MW gener

35、ator group as example.發(fā)電機額定有功Generator rating active power： 發(fā)電機額定電壓Generator rating voltage： 發(fā)電機額定勵磁電壓Generator rating excitation voltage： 發(fā)電機額定勵磁電流Generator rating excitation current： 調(diào)節(jié)器額定勵磁電流Regulator rating excitation current： 發(fā)電機額定功率因數(shù)Generator rating power factor： CosN=0.85通過計算 By calculation:

36、發(fā)電機額定無功Generator rating reactive power： 發(fā)電機額定定子電流Generator rating stator current： 發(fā)電機PT變比為Generator PT tramsformation ratio is： 13.8KV/100V發(fā)電機CT變比為Generator CT tramsformation ratio is： 8KA/5A額定發(fā)電機CT電流為Rating generator CT current is： 3.845A勵磁調(diào)節(jié)器額定交流采樣量各值為Excitation regulator rating AC sampling each values are： 測量PT的采樣值為Specific PT sampling value is：334DH 儀表PT的采樣值為Instrument PT sampling value is：334DH CT的采樣值為CT sampling value is：3D4AH 發(fā)電機有功的采樣值為Generator active p