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BAI #4-ENG-20120101

1. 29 Why do you use 24 VDC in Peako BGES Before BGES export electrical power there is a transient Change Power process in BGES when there is no power in the busbar In order to maintain a continuous power supply to all electrical control components during this transient period Peako uses 24 VDC battery to provide continuous power to the electrical controls What are the electrical voltages of BGES BGES can be 50Hz or 60Hz The output voltage can be made as per Client s requirement such as 110V 220V 380V 440V 480V etc Web info Page 7 9 Version 20120101 4 A ww iV a Pea ko BAI 4 FAQ Control Is there any certification for the Synchronization panel What are the Standards _ We can provide Digital or Dial gauge display as per Client s request Digital display is more specific but more expensive Have you calibrated the gauges in the panel How do you calibrate Any record Peako use specific electrical signal generator to calibrate each individual gauges before T amp C of BGES and all the calibration records were kept in our factory _ The earthing systems Our plant shall be installed in rural area without tall buildings nearby But Peako BGES is pretty tall how can it be protected against lightning There is a lightning arrester installed at the top of the flare stack with independent earthing tape to ground Ar
2. island or Grid mode How to operate the generator control panels Peako s generator electrical panels provide Island and Grid synchronization functions There are Manual or Auto control selection For details of the procedure please refer to Peako O amp M manual Web info Page 6 9 Version 20120101 4 AS Step we Pea ko BAI 4 FAQ Control 25 After the generators were running in parallel how can we adjust the Load Sharing _ Sometimes there is some uneven load distribution after synchronization Don t worry you can adjust by fine tuning the Speed control knob at the panel For the less loaded generator you can slightly increase the speed adjustment For the more loaded generator you can slightly reduce the speed adjustment Why are you using some Shielding cables in the control We prefer to eliminate the Signal interference for those equipment How to adjust DGM 2 settings _ The settings at the DGM 2 were commissioned in Peako factory which is unlikely to lose i e it is normally not necessary to readjust the settings If it s necessary to adjust the settings please refer to the DGM 2 User manual There are much interference from the Frequency Inverter what can we do Yes the signal interference from Frequency Inverter to PLC or Touch screen is significant We have successfully used specific signal filter to eliminate the interference
3. BAI 4 FAQ Control 19 How to set the AVR _ Peako is using BASLER AVR Automatic Voltage Regulator which is stable versatile and user friendly For AVR setting procedure please refer to Peako O amp M manual about DECS 100 20 When the electrical output voltage is unstable what can we do When the electrical output voltage fluctuates widely you can slightly adjust the KI and KP setting Please refer to the detail procedure stated in Peako O amp M manual about DECS 100 21 When the electrical frequency is unstable what can we do _ The unstable output frequency might be caused by the fluctuating Quality of Producer gas or the Engine speed governor If the gas quality is unstable adjust the gasifier for a stable HV pressure temperature etc If the speed governor is unstable check the actuator linkage or slightly increase the Gain and Derivative of the Speed governor 22 What kind of Synchronization module is used in Peako BGES Peako is using the German Heinzmann DGM 2 Synchronization module It has the combined Synchronization and Load sharing functions 23 What are the essential functions of the generator control panels Peako s generator control panels are essentially monitoring all the individual generator performance with various meters on the panels Another essential function is providing generator synchronization functionality which can be in
4. common faults 1 Electrical component failure 2 Humidity inside ESP is excessive 3 Too much water or ash entrained in the insulation oil 4 The electrode wire short circuited or grounded 5 The insulator at the transformer is wetted 6 The heavy electrode wire hanger fell off 7 The ESP flushing water valve is left open or leaky _ If the Frequency Inverter fail you should try to locate the fault If necessary Peako can provide spare parts at cost Alternatively you can bring the Frequency _ Inverter to the local dealer for maintenance or replace with a new one Sometime we cannot ignite the gas at the Flare Stack why To enhance the gas ignition capability Peako has installed two sets of Hi volt igniters at the gas _ outlet inside the flare stack Occasionally the flare gas cannot be ignited especially when the gasifier was newly flashed up _with the gasifier temperature lt 400 C There are various reasons that the flare gas cannot be ignited maybe the gas Heat Value is too low Gas pressure is too low Gas is too concentrate or too lean gas is too wet the ambient wind is too strong problem with the Hi volt igniter etc Whenever the flare cannot be ignited we must identify the fault Anyway if it s not ignited after several trials you must use a manual igniter to flare the gas to mitigate environmental impact Web info Page 5 9 Version 20120101 UA PEN TEF we Pea ko
5. C module or re install the PLC program to trace the fault Don t worry if you haven t operated PLC before When you have successfully gone through an introductory training session then you should be able to operate the PLC in Peako BGES Web info Page 2 9 Version 20120101 E PASS Suse We Pea ko BAI 4 FAQ Control 5 How to input PLC settings Any Password Who can amend the settings _ You need a Laptop with RS232 connector and a special data input cable to access the PLC such as amending the settings There are Passwords installed into the Touch Screen and Password access is designed to have different level of authority A usual operator cannot access into the PLC to amend the setting Supervisory Password is required to input data into the PLC 6 Does Peako provide electrical wiring and control drawings As we cannot read Chinese are there any English descriptions in the drawings Peako shall provide Electrical schematic and wiring diagram with English description Do those electrical cabinets in the system waterproof _ Yes all the electrical cabinets used in BGES are of IP56 The generator synchronization panels which are installed indoor are of IP54 However they comply with CE requirements What are the critical electrical control systems in Peako BGES Gasifier protection systems are 1 Alarm protection 6 circuits of E stop 2
6. Gasifier shutdown 4 critical equipment with overload protection device 3 Gasifier shutdown Gasifier Middle high temperature device 4 Alarms 2 Bursting disc activation Generator protection systems are 1 Alarm amp Shutdown High lubricating oil temperature 2 Alarm amp Shutdown Low lubricating oil pressure 3 Alarm amp Shutdown High cooling water temperature 4 Alarm amp Shutdown Overspeed 5 Shutdown Under voltage Over voltage 6 Shutdown Over current 7 Shutdown Short circuit 8 Shutdown Reverse loading Please refer to Peako s O amp M manuals for the specific alarm or shutdown settings Web info Page 3 9 Version 20120101 4 ASS susp we Pea ko BAI 4 FAQ Control 9 How do you install and commission the wiring during site erection Does Peako send over Commissioning engineer During site erection each individual electrical wire linking between modules or towards the control room will be installed piece by piece Peako shall provide Commissioning engineers to site How many motors are there in Peako system For a Peako 500 BGES there are totally 15 motors But it does not include the motors in the cooling towers 11 When there are defects of the electrical components does Peako provide spares When we ship out the system Peako shall provide reasonable spares for the warranty period Upon request Peako shall prov
7. SA step we Peako BAI 4 FAQ Control BGES Application Information FAQ Control Reference BAI 4 Model Peako 500 COMPACT Web info Page 1 9 Version 20120101 UA PEN TEF We Pea ko BAI 4 FAQ Control Frequently Asked Questions FAQ 1 What are the essential electrical control systems in BGES There are three essential systems 1 Gasifier control console 2 Gas engine monitoring panel 3 Generators synchronization panels 2 What kind of Electrical control standard or specification used What s the Export standard _ Peako electrical control complies with GB7251 1 2005 Peako BGES complies with CE legislations What s PLC What s the difference with electrical relays What are the pros and _ cons in operation and maintenance _ PLC stands for Programmable Logic Controller Comparing with traditional electrical relays 1 Control system configuration is more flexible and expansion is easy 2 User friendly 3 Can work in tough environment anti interference is good reliable Pros of PLC User friendly touch screen operation occupied less space steady operation Cons of PLC Expensive requires more skillful technician for maintenance _ What can we do when PLC fail We have no experience of PLC should we attend PLC training now before we can operate When PLC fails we should identify the fault Usually we can change the PL
8. e there any component labels in the electrical panels Can we match those with drawings _ All essential electrical components were labeled that match the labels in the electrical drawings All Synchronization panel were factory tested and fulfill GB7251 1 2005 Can we have digital display at the panels What are the Pros and Cons What kind of earthing system is used in BGES 1 Gasifier lightning arrester with independent earthing tape 2 Generator bodies and motor casings earthing 3 The N connection of electrical supply 4 The ve connection of 24VDC Is there any cable numbers Is it likely to drop off during transportation There are conspicuous cable labeling at each end of the cables which are unlikely to get lost Web info Page 8 9 Version 20120101 LA ak Seep iV a Pea ko BAI 4 FAQ Control 38 How do you install cables to cabinets Is there any special glands Is it water or dust proof We are using cable glands at the cabinets to protect the cable as well as dust or water proof 39 There are so many cables would Peako provide cable schedules including volt drop calculation Each cable in the system is selected with calculation and fulfill IEC requirement Peako can provide cable schedule including volt drop cable specification temperature rise factor cable grouping etc 40 There are different electrical specifications between China and other cou
9. ide spares at a reasonable price Does Peako provide electrical component list with quotation Peako shall provide electrical component list As the cost of the components fluctuate significantly Peako shall provide quotation upon request 13 What kind of electrical components used Can we buy them aboard If we cannot source it what can we do For those common electrical components installed at Peako electrical panels such as circuit breakers contactors PLC Touch screen etc are of those famous international brands such as ABB or Siemens These are commonly available aboard In case you cannot buy it locally Peako can provide spares at an agreed price _ What sort of electrical control training is available Peako shall provide the following electrical control trainings 1 System safety protection 2 System control theory and schematics 3 Electrical operation and maintenance Web info Page 4 9 Version 20120101 4 A we Peako BAI 4 FAQ Control 15 If the PLC program fails after running for a period what can we do _ You can reinstall the PLC program When we ship out the system Peako shall provide a Memory stick with all the necessary software program You can install the program yourself or alternatively we can assist to install via remote internet access What are the possible reasons for abnormal ESP voltage The followings are the
10. ntries such as the N cable cross section area how do you deal with that We shall review the specific electrical specification legislation at the relevant country or location Then we shall design our electrical cable and components accordingly 41 What kind of electrical license is required for BGES operator What kind of electrician certificate is required for electrical maintenance For BGES operators there is no need to have Electrician Certificate But for electricians involving in the maintenance of the electrical works then valid Electrician Certificate is required When we purchase BGES what kind of electrical tools or meters should we prepare The client should consult their electrical engineers or electricians about the general electrical tools or meters required In particular the Client should have a Laptop with RS232 port for installation downloading PLC program setting Synchronization panel and Gas engine ignition module Web info Page 9 9 Version 20120101

BAI #4-ENG-20120101

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