Kev piav qhia txog kev teeb tsa hluav taws xob ntawm Chav Thawv Muaj Hluav Taws Xob Siab

Lub tshuab hloov hluav taws xob siab thiab lub kaw lus faib hluav taws xob yog qhov txuas tseem ceeb hauv kev xa thiab faib hluav taws xob ntawm lub tshuab, feem ntau suav nrog lub tshuab hloov hluav taws xob siab, lub txee PT thiab lub txee sib luag (teeb tsa thaum ntau lub tshuab sib luag). Ntawm lawv, lub tshuab hloov hluav taws xob siab, ua lub txee hluav taws xob tawm, muaj lub tshuab hluav taws xob nqus tsev (VCB) ua nws lub hauv paus tseem ceeb, nrog lub zog ntsuas ntawm 12kV thiab lub peev xwm tawg ntawm ≥25kA, uas tuaj yeem txiav tawm qhov txhaum tam sim no thiab ua kom muaj kev nyab xeeb ntawm lub kaw lus. Lub txee muaj chav ntsuas thiab tiv thaiv (5P20) CT/PT, ntawm cov PT specification yog 10.5kV/0.1kV, uas feem ntau yog siv rau kev ntsuas hluav taws xob, kev tswj hwm kev sib dhos thiab kev tiv thaiv overvoltage/undervoltage; tib lub sijhawm, nws muaj 10kV zinc oxide arrester los tiv thaiv lub tshuab hluav taws xob thiab lub transformer tseem ceeb los ntawm kev cuam tshuam overvoltage. Tsis tas li ntawd xwb, lub switchgear kuj muaj cov haujlwm tiv thaiv luv luv, overload thiab av txhaum, txhawb nqa kev qhib thiab kaw tes thiab hluav taws xob, thiab muaj cov cim qhia qhov chaw thiab cov khoom siv hluav taws xob sib txuas kom tiv thaiv kev ua haujlwm tsis raug. Lub txee PT yog qhov kev teeb tsa xaiv tau, uas nws lub luag haujlwm tseem ceeb yog muab cov teeb liab voltage, cov teeb liab sib dhos, cov khoom siv fais fab thiab cov khoom siv tiv thaiv voltage rau lub kaw lus, kom ntseeg tau tias kev ua haujlwm ib txwm ntawm lub kaw lus tswj thiab tiv thaiv. Thaum ntau lub units xav tau paralleled, yuav tsum muaj lub txee sib dhos. Lub txee sib xyaw ua ke cov khoom siv sib dhos tsis siv neeg thiab cov khoom siv sib dhos tsis siv neeg, muaj qhov sib txawv zaus, qhov sib txawv voltage thiab qhov sib txawv ntawm lub kaum sab xis, thiab tuaj yeem paub txog lub zog reactive thiab kev sib koom ua haujlwm ntawm cov units, kom ntseeg tau tias kev ruaj khov thiab kev lag luam ntawm kev ua haujlwm sib dhos.

Lub kaw lus tswj thiab tiv thaiv yog "lub hlwb" rau kev ua haujlwm zoo thiab muaj kev nyab xeeb ntawm lub tshuab, suav nrog peb lub modules: lub tshuab tswj, kev tiv thaiv relay siab thiab kev saib xyuas hauv zos / chaw deb. Lub tshuab tswj feem ntau xaiv cov npe nrov xws li Deepsea DSE7320 thiab ComAp lossis cov khoom lag luam hauv tsev nrog kev ua tau zoo sib npaug. Nws muaj kev pib / nres tsis siv neeg thiab AMF (hloov tsis siv neeg thaum lub zog tseem ceeb tsis ua haujlwm), thiab tuaj yeem saib xyuas cov kev ua haujlwm tseem ceeb xws li qhov kub ntawm dej, roj siab, qhov ceev, voltage, tam sim no, zaus thiab lub zog. Tib lub sijhawm, nws koom ua ke ntau yam kev tiv thaiv xws li overvoltage / undervoltage, overfrequency / underfrequency, overcurrent, luv luv circuit, overspeed, dej kub siab thiab roj siab qis. Nws tuaj yeem sau cov ntaub ntawv txhaum thiab cov xwm txheej keeb kwm, thiab txhawb nqa RS485 / Ethernet kev sib txuas lus deb, muab kev yooj yim rau kev ua haujlwm thiab kev tswj hwm txij nkawm. Qhov kev tiv thaiv relay siab-voltage siv lub cuab yeej tiv thaiv microcomputer, uas muaj cov haujlwm tiv thaiv tiav, suav nrog kev tiv thaiv sib txawv ntawm lub tshuab hluav taws xob, kev tiv thaiv overcurrent/instantaneous trip, kev tiv thaiv av fault (NGR sab xoom-sequence CT), kev tiv thaiv overvoltage/undervoltage, kev tiv thaiv overfrequency/underfrequency thiab kev tiv thaiv fais fab rov qab (thaum txuas nrog grid). Nws tuaj yeem teb sai rau qhov faults, txiav tawm lub voj voog fault raws sijhawm, thiab txo qhov kev pheej hmoo ntawm kev puas tsuaj ntawm cov khoom siv. Hauv kev saib xyuas, kev sib xyaw ua ke ntawm cov txheej txheem hauv zos thiab chaw taws teeb tau siv. Hauv zos, lub vaj huam sib luag tswj hwm high-voltage thiab lub vaj huam sib luag tswj hwm qis-voltage tau teeb tsa hauv nruab nrab ntawm ib sab ntawm lub thawv, ua kom yooj yim rau kev ua haujlwm thiab kev saib xyuas hauv qhov chaw; deb, nws txhawb nqa MODBUS TCP / 4G / 5G cov txheej txheem sib txuas lus, thiab tuaj yeem txuas nrog SCADA system lossis huab platform kom paub txog lub sijhawm tiag tiag saib xyuas qhov xwm txheej ua haujlwm ntawm lub tshuab, kev hloov kho parameter thiab kev ceeb toom ua ntej qhov txhaum, txhim kho kev ua haujlwm thiab kev txij nkawm zoo.

Lub tshuab hluav taws xob pabcuam qis-voltage muab kev lees paub rau kev ua haujlwm ib txwm ntawm lub tshuab, feem ntau suav nrog AC400V lub txee faib hluav taws xob qis-voltage thiab DC24V DC system. Lub txee faib hluav taws xob qis-voltage feem ntau muab hluav taws xob rau ntau yam khoom siv pabcuam, suav nrog cov khoom siv tiv thaiv kev khov thiab cov khoom siv tiv thaiv dej xws li lub tshuab cua sov dej, lub tshuab cua sov qhov chaw thiab lub tshuab cua sov tshem tawm dej, kev tswj hwm ib puag ncig thiab cov khoom siv hluav taws xob pabcuam xws li lub teeb thawv, qhov (sockets), kiv cua tso pa tawm thiab lub qhov hluav taws xob, nrog rau cov khoom siv kev nyab xeeb thiab kev tswj hwm xws li lub chargers, cov khoom siv tswj hwm hluav taws xob thiab cov cuab yeej ntes hluav taws / pa luam yeeb; lub txee muaj MCCB, cov cuab yeej hluav taws xob me me, cov khoom siv tiv thaiv kev xau, teeb qhia, voltmeters / ammeters, thiab lwm yam, kom ntseeg tau tias muaj kev nyab xeeb thiab ruaj khov ntawm kev muab hluav taws xob pabcuam. Lub DC24V DC system, ua lub zog hluav taws xob thaum muaj xwm txheej ceev thiab tswj hwm ntawm lub tshuab, siv 24V cov roj teeb lead-acid lossis cov roj teeb khaws cia kub qis uas tsis tas yuav saib xyuas nrog lub peev xwm ntawm 150-200Ah, thiab nws muaj lub charger ntse uas ntab / sib npaug nrog lub zog hluav taws xob nkag ntawm AC400V, uas tuaj yeem ua tiav kev tswj hwm kev them thiab tso tawm ntawm cov roj teeb khaws cia; tib lub sijhawm, nws muaj lub qhov hloov pauv roj teeb cais (xauv tau), fuse thiab lub cuab yeej saib xyuas rwb thaiv tsev kom ntseeg tau tias muaj kev ntseeg siab thiab kev nyab xeeb ntawm DC system, thiab zam kev cuam tshuam ntawm DC lub zog hluav taws xob tsis ua haujlwm rau kev pib thiab kev ua haujlwm ib txwm ntawm lub tshuab.

Lub tshuab excitation thiab AVR system yog lub hauv paus tseem ceeb los xyuas kom meej tias lub zog hluav taws xob ntawm lub tshuab hluav taws xob muaj zog, ua haujlwm sib koom tes nrog lub tshuab hluav taws xob tseem ceeb. Lub tshuab no siv hom PMG permanent magnet brushless excitation mode (standard configuration). Piv nrog hom kev excitation ib txwm muaj, nws muaj qhov zoo ntawm kev tiv thaiv kev cuam tshuam, kev ua haujlwm pib txhim khu kev qha thiab kev saib xyuas yooj yim, thiab tuaj yeem hloov kho rau cov kev xav tau ntawm ntau yam kev thauj khoom. Raws li lub hauv paus tswj hwm ntawm lub tshuab excitation, lub tshuab digital automatic voltage regulator (AVR) tsis tsuas yog ua tiav kev tswj hwm voltage tsis siv neeg los xyuas kom meej tias lub zog hluav taws xob tso zis ntawm lub tshuab hluav taws xob muaj zog ruaj khov, tab sis kuj txhawb nqa kev tswj hwm lub zog reactive / lub zog fais fab thiab kev sib koom ua ke ntawm lub zog reactive thaum lub sijhawm ua haujlwm sib luag, txhim kho qhov zoo ntawm lub zog thiab kev ua haujlwm ntawm lub tshuab.

Lub cable, busbar thiab grounding system yog "cov hlab ntsha" ntawm cov qauv hluav taws xob, uas cuam tshuam ncaj qha rau kev nyab xeeb thiab kev ntseeg siab ntawm kev xa hluav taws xob. Lub cable high-voltage xaiv YJV22-8.7 / 10kV flame-retardant tooj liab core cable, uas feem ntau yog siv rau kev xa hluav taws xob ntawm lub generator, lub txee high-voltage thiab NGR txee, thiab muaj cov yam ntxwv ntawm flame retardancy, kub tsis kam thiab corrosion tsis kam; lub cable qis-voltage xaiv ZR-YJV 0.6 / 1kV specification, thiab lub cable tswj xaiv ZR-KVV / KYJVP shielded cable, uas muaj roj tsis kam, kub tsis kam thiab tiv thaiv kev cuam tshuam, kom ntseeg tau tias kev xa cov teeb liab tswj thiab hluav taws xob qis-voltage ruaj khov. Lub txee high-voltage siv tooj liab busbar (TMY) nrog kev kho cua sov shrinkage los txhim kho kev ua haujlwm rwb thaiv tsev thiab tiv thaiv kev ua yuam kev luv luv. Hais txog lub kaw lus av, lub thawv plhaub yuav tsum tau grounded kom ntseeg tau (tsis pub tsawg dua 2 qhov chaw), thiab txhua yam khoom siv hluav taws xob xws li lub generator neutral point, high-voltage txee, NGR txee thiab low-voltage txee txuas nrog lub grounding grid. Qhov grounding tsis kam yuav tsum yog ≤4Ω, uas tso tawm qhov txhaum tam sim no thiab ua kom muaj kev nyab xeeb ntawm cov khoom siv thiab cov neeg ua haujlwm.

Lub kaw lus kev nyab xeeb thiab kev sib txuas lus yog qhov tseem ceeb rau kev ua haujlwm ntawm lub tshuab, uas tshem tawm cov kev phom sij kev nyab xeeb los ntawm ntau yam kev tiv thaiv. Lub qhov rooj sib txuas lus hluav taws xob siab tuaj yeem ua tiav qhov kev ua haujlwm ntawm kev tua hluav taws xob lossis xauv thaum lub qhov rooj qhib, tiv thaiv cov neeg ua haujlwm kom tsis txhob nkag mus rau hauv thaj chaw hluav taws xob siab los ntawm qhov yuam kev thiab ua rau muaj kev sib tsoo hluav taws xob; lub cuab yeej sib txuas lus hluav taws xob tuaj yeem tiv thaiv kev ua haujlwm tsis raug xws li kaw nrog av thiab kaw riam av nrog hluav taws xob, kom ntseeg tau tias cov khoom siv muaj kev nyab xeeb; lub cuab yeej nres thaum muaj xwm txheej ceev siv peb txoj kev tswj hwm ntawm lub tshuab, vaj huam sib luag tswj hwm thiab chaw taws teeb, uas tuaj yeem nres lub tshuab sai sai yog tias muaj qhov yuam kev tam sim ntawd, txo qhov kev poob ntawm qhov yuam kev; tib lub sijhawm, cov cim kev nyab xeeb xws li kev phom sij hluav taws xob siab, tsis kaw, cov cim av thiab cov teeb ceeb toom tau muab tso rau ntawm lub thawv thiab cov khoom siv hluav taws xob kom ceeb toom cov neeg ua haujlwm kom them sai rau kev nyab xeeb.

Yuav kom ua tau raws li qhov xav tau ntawm ntau qhov xwm txheej sib txawv, lub tshuab no kuj muab ntau yam kev teeb tsa xaiv tau. Yog tias tsim nyog siv lub tshuab hluav taws xob qis rau kev muab hluav taws xob ntxiv, tuaj yeem teeb tsa lub tshuab hloov pauv 400V → 10.5kV lub thawv hom; yog tias tsim nyog kom paub txog kev hloov pauv tsis siv neeg ntawm lub zog tseem ceeb thiab lub tshuab, tuaj yeem phim lub cuab yeej hloov pauv ATS / dual power; yog tias tsim nyog los txhim kho kev ua haujlwm deb thiab kev saib xyuas, tuaj yeem teeb tsa lub thawv saib xyuas deb, koom ua ke 4G / 5G, GPS thiab huab platform ua haujlwm; txhawm rau txhim kho kev nyab xeeb hluav taws, lub kaw lus tiv thaiv hluav taws heptafluoropropane / aerosol tuaj yeem teeb tsa, phim nrog cov pa luam yeeb thiab ntsuas kub; rau kev xav tau suab nrov thiab rwb thaiv tsev thermal, ob txheej pob zeb rwb thaiv tsev, cua nkag thiab pa tawm suab nrov tshem tawm thiab hluav taws xob shutters tuaj yeem siv los txo lub tshuab suab nrov ua haujlwm thiab hloov kho rau qhov chaw kub qis.

Kev teeb tsa hluav taws xob ntawm lub thawv ntim khoom siv hluav taws xob siab ua raws li cov qauv hauv tebchaws thiab thoob ntiaj teb kom ntseeg tau tias cov khoom siv zoo thiab kev nyab xeeb hauv kev ua haujlwm. Cov qauv siv dav dav suav nrog GB / T 2820 "Reciprocating Internal Combustion Engine Driven Alternating Current Generating Sets", GB / T 1029 "Test Methods for Three-Phase Synchronous Machines", GB 50149 "Code for Construction and Acceptance of Busbar Installation in Electrical Installation Engineering", GB 50217 "Code for Design of Power Engineering Cables" thiab IEC 60034 "Rotating Electrical Machines". Txhua qhov kev teeb tsa ua tau raws li cov qauv thiab tuaj yeem ua tau raws li cov kev xav tau ntawm ntau yam kev tsim kho.