Fewer losses: Controls help high-voltage projects in China, Nambia

High-voltage automation technologies are helping projects in China and Nambia, with help from ABB. ABB won orders worth $440 million from the State Grid Corporation of China and other partners to provide new ultrahigh-voltage technology for the world’s longest power transmission link, at more than double the highest power rating at present. In separate, related news, ABB won an order worth $180 million from Namibian national power utility, NamPower, adding to grid stability in that region.

12/28/2007


Zurich, Switzerland – High-voltage automation technologies are helping projects in China and Nambia, with help from

ABB

. ABB won orders worth $440 million from the State Grid Corporation of China and other partners to provide new ultrahigh-voltage technology for the world’s longest power transmission link, at more than double the highest power rating at present. In separate, related news, ABB won an order worth $180 million from Namibian national power utility, NamPower, adding to grid stability in that region.

The power superhighway running 2,000 kilometers (1,240 miles) from western China to the industrialized coastal area in the east, will have a capacity of 6,400 MW, enough to meet the needs of approximately 31 million people, based on average consumption per capita. The link from Xiangjiaba hydropower plant to Shanghai is scheduled for completion in 2011.

An ultrahigh-voltage direct current (UHVDC) link comprises two substations and a power transmission system using breakthrough technology to transmit electricity at ultrahigh voltage (800 kV), to minimize the amount of power lost in transmission. Increasing the voltage level of electrical transmission creates considerable advantages for the environment, including lower electricity losses and the use of less land compared to traditional overhead lines. UHVDC is suitable for vast countries like China, where centers that need power may be located far from power sources.

This project represents breakthroughs in electrical power transmission: The 6,400 MW power rating is more than double the most powerful rating in operation. At 2,000 km, the transmission line will be the longest in the world. Transmission losses will be less than 7%, less than the losses from conventional 500 kV high-voltage direct current (HVDC) transmission schemes. Savings from using UHVDC compared with HVDC are equivalent to the annual power consumption of more than 900,000 people in China, ABB noted.

“Ultrahigh voltage transmission is a vital new technology for the efficient use of hydropower generated in remote areas,” said Peter Leupp, head of ABB’s Power Systems division. “ABB technology, which plays an essential role in this project, can support the economic development of some of the world’s most populous regions, while lowering environmental impact."

In related news, a Namibian national power utility, NamPower, will connect two parts of the country’s power grid and strengthen electricity networks in southern Africa, with help from an ABB $180 million ABB contract. NamPower is building a 350 kV, 300 MW transmission link between the northeastern Caprivi region and the power network in central Namibia. The link will interconnect electricity networks of Namibia, Zambia, Zimbabwe, the Democratic Republic of Congo, Mozambique, and South Africa to create an alternative route for power imports and exports to and from neighboring countries. The design allows for an extension to 600 MW. The link will use ABB’s environmentally friendly HVDC Light system, a transmission technology that will stabilize the two weak networks and increase grid reliability in the region.

Control Engineering News Desk
( Register here and scroll down to select your choice of eNewsletters free .)





No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
World-class manufacturing: A recipe for success: Finding the right mix for a salad dressing line; 2015 Salary Survey: Manufacturing slump dims enthusiasm
2015 Top Plant: Phoenix Contact, Middletown, Pa.; 2015 Best Practices: Automation, Electrical Safety, Electrical Systems, Pneumatics, Material Handling, Mechanical Systems
A cool solution: Collaboration, chemistry leads to foundry coat product development; See the 2015 Product of the Year Finalists
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Getting ready for industrial IoT; Visualizing the (applied) automation continuum; Preventing VFD faults and failures; Using wireless for closed-loop applications
Migrating industrial networks; Tracking HMI advances; Making the right automation changes
Understanding transfer switch operation; Coordinating protective devices; Analyzing NEC 2014 changes; Cooling data centers

Annual Salary Survey

After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.

The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.

Read more: 2014 Salary Survey: Confidence rises amid the challenges

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role that compressed air plays in manufacturing plants.