A study of the MAB Satellite Equipment Room (SER) is attached below. This paper was prepared by MAB KLIA Management and maintenance division for submission to the Board for Tender and committee approval.
1. Existing SER rooms power distribution system and the monitoring devices.
Most of our power distribution system in the SER rooms are three (3) phase with 415Vac/40A/300mA power supply derived from the TNB and the alternative power source – generator. The related power supply will be terminated at the “Main Distribution Board (MDB)” and distribute to the UPS/rectifier for power back-up (approximately 30~60 minutes according to original technical specifications and requirement) in case of any power interruption before it is terminated to the end-point devices.
Some of the equipment’s status can be remotely monitor (NOT CONTROL and MANAGE) by the technical personal at the BMS Workstation through the “Direct Digital Controller (DDC)” to the server. The existing monitoring features of the power interruption event ONLY available manually for “MDB” failed and “UPS/Rectifier” status.
2. Problems received at the BMS center
With the statistics as shown in the “BMS SYSTEM EVENT REPORT” of some incident occurred at the following locations:-
1.1 Event date: 09/09/2005
1.2 TT number: 113394
1.3 Location: MDF G07 Ground Floor, SAT
1.4 Down time: 02: 00: 00
1.5 Incident arises: MDF G07 incoming power supply off at 12:50pm until 14:50pm
2.1 Event date: 28/12/2005
2.2 TT number: 121337
2.3 Location: MDF room Ground floor, SAT
2.4 Down time: 00: 56: 00
2.5 Incident arises: MDF G07 incoming Power supply off at 8:26am until 9:22am
3.1 Event date: 13/09/2006
3.2 TT number: NA
3.3 Location: MSBC1B1 and B2, Ground floor, CP
3.4 Down time: 00: 25: 00
3.5 Incident arises: MSBC1B1 and B2 Power tripping at 1:05am until 1:28am
3. Event Reports
In-conjunction to the incident and report 1, although the incident occurred not resulted from the power supply failure but it was no contact relay information and caused all related departments and technical personals must attend to the “suspected” remote site (MDF G07) and carry-out trouble-shooting, fault diagnostic and analysis of the event; thus, causes them approximately two (2) hours of downtime before the problem had been rectified. In this incident, parties involved in site attending were: Service desk, UTW and UPS contractor.
In-conjunction to the incident and report 2, it was shown that the incident happened worst than incident 1. The technical personal found that the power supply to the network and end-point devices were down at the same time due to the incoming circuit breaker had been isolated. The result also indicated that an earth fault, nuisance, lightning or a short-circuit surge was strike at the MDB/power line which caused the circuit breaker to tripped off the outgoing power source to the end-point devices and the DDC controller, thus, resulted to the controller unable to send the alarm event data to the workstation. The incident caused a down time of one (1) hour.
In-conjunction to the incident and report 3, improvement of the MDB power supply and the DDC were found to be highly critical in an operation. The DDC found to be faulty as it may be strike by surges from the power line and as stated in the report, 16 units of controllers were down due to a power change over from TNB to Generator which believed that the circuit breaker was tripped due to some surges or nuisance interruption. The incident caused a down time of half an hour.
In summary, all the incidents happened above were due to the power supply disruption and the DDC working conditions. As shown in the reports, the power supply source from the “Main Distribution Board (MDB) found to be manually access and easily tripped which caused by power interruption at the circuit breaker (if any of the fault strike at a sudden). Those power faults shall inclusive of: power/lightning surge, earth fault, nuisance, transient or harmonic discharge.
With the power interruption scenario, manual reporting to the BMS is a must if the DDC was down, personal site attending, site security clearance, site trouble-shooting and manual resetting shall be carry-out, which causes them a high down time, service interrupted, revenue losses and high service OPEX.
4. Reason/purpose for the development project to be carried out.
The problems happened in the SER rooms were due to power supply disruption at the related circuit breaker in the MDB by either power/lightning surge, earth fault, nuisance, transient or harmonic. The disruption also affected the controller and the intercom responding to the BMS control centre. Thus, resulted to a negative impact to the management of the following:
To resolve and overcome these problems, we would like to propose an innovative Central Power Management System fully developed in Malaysia known as “IBES Centralized Management System (IBES CMS)”. The solution has been tested and deployed within many prominent organization and companies in Malaysia such as KLIA, Telekom Malaysia, MAXIS Berhad, SIRIM, MARDI, UKM, UPM, JKR, KLCC Twin Tower, Petronas data centre, Jabatan Perdana Menteri and even in Maybank Data Centres and many others.
The track records in the above territories proved that: inculcate
In KLIA, we have tested two pilots TRIAL-run at SDF 01 and MDF G07 since August 2007, with the proposed CMS ONLINE. The purpose of the TRIAL-run is to justify how the system benefits KLIA and MAB in long run. After a period of 1 year, with the statistic report recorded at the CMS workstation, we found that the IBES CMS system achieved great saving in:-
5. Propose enhancement to the incident 1, 2 and 3
With the incident 1, 2 and 3 above, we concluded into five (5) uncontrollable problems that need enhancement in our daily operation. The new proposed system has the advantages and value added of the following:-
Need of improvement description
a) Failed to remote ON/OFF/reset control of the existing circuit breaker by means of GSM/LAN/WEB backbone;
The conventional circuit breaker is a manually operated device with no intelligent features and mechanism to be monitored and controlled by external devices, like BMS and DDC. It is also unable to detect any power fault and convert to communication data, like SMS/LAN/WEB for remote access by means of a hand-phone or PC workstation.
b) Minimize nuisance interruption to pro-long battery life-span
The existing circuit breaker always tripped off by nuisance or surges interruption in most of the operation. It leads to more often of charging/discharging of the battery As recorded in the European standard of battery fully charge/discharge life span cycle should be approx. 800~1,200 times.
c) Detect power fault event and automatic provides fault diagnostic logging with pre-programmed software driven operation;
The existing circuit breaker designed with no software communication backbone which resulted to the BMS and DDC not able to enhance remote monitor and control of the manually operated circuit breaker.
d) “MAIN DISTRIBUTION BOARD (MDB)”
The MDB is a protection gadget, serves to protect & supply power source to the UPS/Rectifier and end-point devices. The MDB contains of MCCB, ELCB/RCCB/ELR/MCB which serve to protect equipment against earth fault, surge, short-circuit and over-current during a power transmission to the end-point devices/equipment. Most of the time, the ELCB/RCCB/ELR tripped the power source which caused by nuisance, transient, lightning strike or harmonic surges and resulted to the following tragedies:-
e) Provides alternative monitoring and control incase DDC or BNA devices failure
The DDC is a dry-contact controller serves to provide signal either “OPEN CONTACT (OFF)” or “CLOSE CONTACT (ON)” to the service desk or the BMS centre. Although this dry-contact has been designed and integrated with the power output source from the MDB but it didn’t mean that the signal detected was 100% true as in this event, the availability of the power supply output from the MDB did not “ONLINE” with a proper power detection device; more ever, like this incident 1, the BMS also can generate a “FALSE” signal due to the fault of electrical devises.
In this event, the reliability and efficiency of the incoming and outgoing power supply and the end-point devices operation conditions are highly critical. To enhance the efficiency of an operation and improve the services, we request the proposed IBES CMS system to be the alternative monitoring and control device system which able to perform the following:-
In most of the fault operation (except short-circuit scenario), the unique system shall performs intelligent operation (with event reporting through the LAN/WEB/GSM) and power supply will be automatic reset to the end-point devices which resulted to the technical personal at the Service Desk shall only study the report from the PC workstation and not wasting unnecessary time and effort to attend the problematic remote site.
6. Why it needs to be carried out now?
Currently BMS system and DDC are designed to monitor all end-point devices and alarm operation status but exclusive of remote monitoring and auto control of power distribution and fault operation to the end-point devices with the disadvantages in the following:-
7. What are the benefits of carrying out the project and the consequences of not carrying out the project?
The benefits of carrying out the project will be as follow:-
If the project is not carrying out, the consequences are:
8. What is the current practice without the existence of the development project to be carried out?
The call center will be alerted by the BMS, then to inform the duty competent engineer for the power failure. Subject to the location of SER room and engineer needs to request for access authorization to the SER room, the power will be normalized only after the competent engineer attended to the SER room and manually reset the power breaker.