대부분의 높은 신뢰성 시설은 UPS 시스템에 상당한 투자를,,en,자신의 사업에 영향을 미치지에서 전기 공급 문제를 방지하기 위해 발전기 및 기타 완화 장치,,en,이러한 완화 장치 및 관련 장비 제조업체의 사양까지 작동하지 않을 때 알람이나 알림을 제공하지 않습니다 종종 자신 실패에 취약하고 복잡한 전자 기계 시스템입니다,,en,연속 전력 모니터링이 들어오는 곳이다,,en,전력 품질 모니터링 시스템,,en,지속적으로 유틸리티 공급을 포함하여 시설 내에서 중요한 위치에 전기 공급의 건강을 평가,,en,UPS의 입력과 출력 및 다른 중요한 점 분포 하중,,en, generators and other mitigation devices in order to prevent electrical supply problems from impacting their business. 그러나, these mitigation devices and related equipment are complex electro-mechanical systems that are themselves susceptible to failure and often do not provide any alarms or notifications when not functioning up to manufacturers specifications. That’s where continuous power monitoring comes in.

Power Quality monitoring systems continually evaluate the health of the electrical supply at key locations within a facility including the utility supply, 발전기, UPS input and outputs and other critical distribution points and load. 그들은 시스템 고장으로 이관 전에이 시스템은 전기 공급에 의해 사전에 검출 이상이 발생 문제를 방지하기 위해 입증 된,,en,그들이 감시 수요뿐만 아니라 발생하면이 시스템은 문제 해결 오류에 대한 헤아릴,,en,온도와 습도 등의 에너지 및 환경 변수,,en,이상적인 시간은 전기 설비를 설치하기,,en,포함 전력 모니터링 장비,,en,초기 건설 단계 인,,en,이러한 모니터링 시스템의 자주 간과 이점은이 사이트 시운전 중에 사용할 수있는 매우 귀중한 자산이 될 수있다,,en,각 요소는 철저하게 설계를 검증하기 위해 테스트중인로이 단계에서 전체 시설의 보를 통해 넣어,,en. These systems are invaluable for troubleshooting failures should they occur as well as monitoring demand, energy and environmental parameters like temperature and humidity.

The ideal time to install any electrical equipment, including power monitoring equipment, is during the initial construction phase. An often overlooked benefit of these monitoring systems is they can be an extremely valuable asset that can be used during site commissioning. During this phase the entire facility is put through its paces with each element being thoroughly tested to validate the design, 로 작동하는 장비 제조하는 경우 / 디자이너 사양을 참조하며 전체 설비와 호환되는지,,en,전력 모니터링 시스템은 기록 및 시설의 성공적인 시운전을 문서화가 아니라이 중요한 단계에서 발생하는 모든 시스템 오류를 식별하고 해결뿐만 아니라 상당한 부가가치를 제공 할 수 있습니다,,en,큰 전 세계적으로 케이블 TV와 미디어 회사는 최근 건설하고 최첨단 데이터 센터 및 생산 시설을 의뢰,,en,건설 중,,en,Dranetz의 앙코르 시리즈,,fr,영구적으로 설치된 전력 품질 모니터링 시스템을 모니터링하기 위해 설치,,en,데이터 센터 내의 키 위치,,en,모니터 위치는 각 유틸리티 공급을 포함,,en,UPS와 하류에 각각 입력과 출력의 UPS 중요한 PDU의,,en. Power monitoring systems can provide significant added value not only by recording and documenting the successful commissioning of a facility but also in identifying and resolving any system failures that occur at this critical phase.

A large worldwide cable television and media company recently constructed and commissioned a state-of-the art data center and production facility. During construction, Dranetz’s Encore Series, a permanently installed power quality monitoring system was installed to monitor 25 key locations within the data center. Monitored locations include each utility feed, 발전기, inputs and outputs of each UPS and critical PDU’s downstream from the UPS. 앙코르 시리즈는 최첨단 전력 품질 기능을 포함한 여러 가지 이유로 선택되었다,,en,사용의 용이성,,en,웹 브라우저 인터페이스 및 비용 대,,en,경쟁,,en,그 혜택을 최대한 활용하고자하는,,en,엔코 시리즈는 연속적으로 평가 및 예상되는 결과와 비교되고, 기록 된 데이터와 스타트 사이트의 일부였다,,en,많은 항목 중,,en,시운전 절차는 유틸리티에서 소스 전송을 평가하는 테스트를 포함,,en,이 개 유틸리티 공급 장치 중 하나,,en,다시 유틸리티 발전기,,en,수행 다른 테스트와는 달리,,en,이 전사 테스트 어둡고 장애 같은 테스트되지 않은 나머지 설비 여러 번 실패 완료 이전에 검색된,,en, ease of use, web browser interface and cost vs. the competition.

Wanting to take full advantage of its benefits, Encore Series was an integral part of site commissioning with recorded data continually being evaluated and compared to expected results. Among many items, the commissioning procedures included tests to evaluate the source transfer from utility (one of two utility supplies) to generators then back to utility. Unlike other test performed, this transfer test failed multiple times with the facility remaining dark and the test uncompleted as failures were detected prior to completion. Between tests one line diagrams were reviewed and compared to the actual build out in order to verify proper equipment installation and construction in attempts to locate the source of the problem. This evaluation indicated several related breakers were either tripped or in the wrong position. The final test attempted proved much more serious with a complete failure of a utility breaker which exhibited visual damage and a smoke odor.

Being commissioned prior to start of site acceptance testing Encore Series data was reviewed for forensic evidence of this failure. The monitoring system design was such that critical locations important to this test were instrumented providing extremely valuable data which resulted in the quick diagnosis of this problem. Each generator bus (Generator 1, Generator 2) and utility feed (Utility 1, Utility 2) was monitored and waveshapes recorded at locations Generator 1 and Utility 2 at the time of the last test that resulted in the breaker failure.

A close inspection of the current waveforms recorded at both Generator 1 (3000A bus) and Utility 2 (4000A bus) locations provided a key indicator of the source of the problem. Current measurements at each location were many times higher than the rated bus capacity. 사실로, current waveshapes on all phases were clipped indicating a saturation of current transformers (CT’s) as a result of currents well in excess of their specifications.

The data above quickly led the team to closely review the sequence of events leading up to, and resulting from the failure at these locations. As suspected, Generator 1 and Utility 2 buses were connected together as shown in the diagram below at the time of failure. Being out of phase the resultant current draw on the system caused the related breakers to trip and ultimately led to the failure of the Generator 1 breaker. Further investigation indicated a sequencing problem in the programmable logic controller (PLC) allowing the Generator 1 and Utility 2 breakers to be closed at the same time. A programming error in the PLC was determined to be the ultimate source of the problem. The programming error was corrected, the failed breaker repaired and the tests were then successfully performed.

“Encore Series paid for itself today” commented the facility manager. Having a power quality monitoring system oversee site commissioning helped this facility very quickly resolve a critical path failure with minimal impact on the overall schedule. 이 경우, the payback for the system was less than 1 month!

출처:
Dranetz
1000 새로운 더럼 도로, 에디슨, NJ 08818
무료 전화: 800-372-6832
전화 732-287-3680