艾默生PlantWeb®數字工廠架構使新發電機組提前九個月開始運營
匹茲堡 2007年3月20日消息——————艾默生過程管理公司宣布,其Ovation®專家控制系統已在鄒縣第七號發電機組成功運行。2006年早期,艾默生就贏得了在鄒縣發電廠為兩組新1,000兆瓦的超臨界機組安裝擁有Ovation®專家控制系統的PlantWeb數字工廠架構和基金會現場總線技術的合同。華電國際鄒縣發電廠四期工程在中國發電廠中是第一個安裝有監測和控制的基金會現場總線設備技術的發電廠。
鄒縣發電廠的7#發電機組在2006年12月4號成功地完成了連續168小時性能測試——對即將聯機的新工廠來說是一個重要的里程碑,提前了9個月。試運行下的8#發電機組預期在2007年六月完這一里程碑式測試。
當四期工程完成,鄒縣發電廠在中國將成為最大的燃煤型發電廠,8#機組的預期發電量為4,540兆瓦。坐落在山東省的鄒縣發電廠,是中國華電集團為滿足區域內日益增長的電力需要一個重要舉措。對于四期工程艾默生的全面控制解決方案包括:總計64臺冗余控制器、24套Ovation工作站、AMS™ Suite設備管理軟件中的智能設管理軟件以及130 多臺基金會現場總線智能儀表,如Rosemount® 848T 溫度變送器、水平流動壓力傳送器。Ovation 系統將管理30,000 多個I/O 點,對鍋爐、汽機和外圍設備實現數據采集、監測和控制。
鄒縣發電廠新發電機組是中國首批1000兆瓦發電機組。超臨界發電機組應用高級的清潔煤技術充許在溫度和壓強升高的環境下操作。由于超臨界技術可以把燃煤發電效率提高50%以上,同時又能達到環保的效果,因而它必將在中國獲得更為廣泛的應用。
由于熱效率超過50%(典型的臨界發電廠熱效率為30%-38%),燃料轉換率少于272.9 grams/KWh (0.60 lbs./KWh),煙氣脫硫有效率超過95%以上,鄒縣7#發電機組在世界范圍內是最清潔,最有效的和最先進的超臨界發電機組。
中國華電廠高級工程師、熱控主任張華說:“艾默生公司的系統在168小時的測試中表現極佳。事實上,Ovation system的平穩啟動和其平穩性能,為獨立結構貢獻了創記錄的22.6個月和試運轉23天時間架構?!?
“通過一次又一次的考驗,艾默生PlantWeb®數字工廠管控結構,不僅可以提高電廠的設備可利用率、熱效率和運行效率,還能夠降低維護成本和其它運行成本,最終提高電廠運行收益?!卑竟檬聵I部(Power & Water Solutions)總裁Bob Yeager 說:“我們很高興中國華電集團選擇艾默生數字自動化解決方案,同時艾默生為艾默生的技術能為這一破記錄里程碑事業出一份力而感到滿足?!?
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[COLOR=#708090]Emerson‘s PlantWeb® Digital Plant Architecture Contributes to Operation of New Generating Unit Nine Months Ahead of Schedule
PlantWeb with Ovation® expert control system supports record-setting timeframe for construction and commissioning of one of China‘s first 1,000-MW Ultra-Supercritical Power Generating Units
PITTSBURGH, PA (March 20, 2007) — Emerson Process Management announced today that its Ovation® expert control system has been successfully implemented at Zouxian Power Plant Unit 7. In early 2006 Emerson won a contract to install its PlantWeb? digital plant architecture with the Ovation® expert control system and FOUNDATION™ fieldbus technology at two new 1,000-MW ultra-supercritical units at the Zouxian Power Plant. The Zouxian Phase IV project, awarded by China Huadian Group Corp., represents the first installation of FOUNDATION fieldbus device technology for monitoring and controlling processes at a power generation facility in China.
Unit 7 of the Zouxian facility successfully completed the 168-hour performance test – a significant milestone for new plants coming online – on Dec. 4, 2006 – roughly nine months ahead of schedule. Unit 8, still under commission, is expected to complete this milestone in June 2007.
When Phase IV is completed, Zouxian Power Plant is expected to be the largest coal-fired plant in China, with eight units having a total generating capacity of 4,540 megawatts. Located in the Shandong Province, the plant is a critical component of China Huadian Group‘s efforts to meet the increasing demand for power in the region. Emerson‘s comprehensive control solution for Phase IV includes a total of 64 redundant controllers, 24 Ovation workstations, AMS™ Suite asset management software and more than 130 Foundation fieldbus intelligent devices such as Rosemount® 848T 8-input temperature transmitters, and flow, level and pressure transmitters. The Ovation system, which will manage nearly 30,000 I/O points, will provide data acquisition as well as control and monitoring of the boilers and balance of plant processes.
The new Zouxian units are among the first ultra-supercritical units in China to have a 1,000-megawatt output rating. Ultra-supercritical plants use new advanced clean coal technology that allows operation at elevated steam temperatures and pressures. Ultra-supercritical technologies are expected to become more prevalent in China because they typically boost the efficiency of coal-based electricity generation by more than 50 percent, while maintaining superior environmental performance.
With a thermal efficiency of more than 45 percent (compared with a typical subcritical plant thermal efficiency of 30-38 percent), a fuel conversion rate of less than 272.9 grams/KWh (0.60 lbs./KWh), and a Flue Gas Desulphurization (FGD) effective rate of more than 95 percent, Zouxian Unit 7 is among the cleanest, most efficient and most advanced ultra-supercritical units in the world.
"The Emerson system performed extremely well during the 168-hour test,” said Hua Zhang, senior I&C engineer, China Huadian Group. “In fact, the smooth startup and performance of the Ovation system contributed to a record-setting timeframe of 22.6 months for unit construction and a mere 23 days for commissioning.”
"We‘ve seen time and time again in other industries how the early adoption of PlantWeb digital plant architecture not only reduces construction and engineering costs, but also translates into ongoing operational efficiencies,” said Bob Yeager, president of Emerson‘s Power & Water Solutions division. We‘re pleased that China Huadian Group selected Emerson‘s digital automation solution and we are gratified that our technologies could play a role in the achievement of the unit‘s record-breaking milestones.” [/COLOR]
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