IEEE Power & Energy Magazine - March/April 2018 - 39

warning system, dispatching operation management system, lightning locating system, weather information system,
protection relay information management system, and market
management system. These systems were implemented by independent vendors at different times, and each one typically
used its own computer, databases, graphic interfaces, and
communications buses. different platforms and application
specifications led to repeated implementation of the grid
graphic display and multiple model databases for the same
power grid. it is difficult for different applications to access
common data and communicate with each other, even in
the same control center. it is even harder to coordinate operational control and optimal scheduling among multilevel
control centers. systems developed separately are not able
to meet the demands for the integrated dispatch and control
of a large grid.
The traditional eMs design could not meet the new
design requirements outlined in the Cigre report. This led
to a series of research and development efforts to define and
implement a new eMs.
The research and development of the new generation of
eMss started with a research project in 2004 by the state
grid Corporation of China (sgCC), which adopted largescale cluster servers to realize an online security and stability analysis with a 15-min interval for China's synchronized
power grid. after the ice disasters and earthquakes in 2008,
the sgCC accelerated the development of the new eMs
generation. The first prototype was implemented in 2009. it

SCADA /EMS

was applied to a smart grid pilot project in 2010, and after
that, it ran successfully in ten provincial control centers. it
was named the smart grid dispatching and Control system
(d-5000). by the end of 2016, 249 d-5000s were successfully installed in the national control center, six regional
control centers, 27 provincial control centers, and most district control centers of sgCC.
in 2010, the China southern power grid (Csg) also started
research on designing and implementing a new eMs architecture in control centers. The resulting operation smart
system (os2) met the emerging challenges and maximized
data-sharing capability among different functions. The os2
design has recently been successfully implemented in the
control centers of Csg.
The smart grid operation system (sgos) illustrates
features of the sgCC and Csg systems. The aim of the
sgos was to meet the six technical requirements in the
Cigre white paper. The design adopts the latest iT technology, including multicore computer cluster hardware
to improve the reliability and processing capacity of the
systems and soa software to enhance the interconnection
capacity of the design and facilitate a smooth transition of
the traditional functions to the new system. First, an integrated support platform with unified standards for the entire
grid was developed. based on the support platform, a dozen
independent systems were horizontally integrated to three
categories of applications, including real-time control and
early warning, scheduling and security checking, as well as

WAMS

Hydropower
Automation System

MMS

Electric Energy
Metering and
Billing System

Protection Relay
Information
Management System

Online Dynamic
Security and
Early Warning System

Weather
Information
System
Lightning Location
System

Dispatching Operation
Management System

figure 2. A diagram of the traditional dispatching automation system in China.
march/april 2018

ieee power & energy magazine

39



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2018

Contents
IEEE Power & Energy Magazine - March/April 2018 - Cover1
IEEE Power & Energy Magazine - March/April 2018 - Cover2
IEEE Power & Energy Magazine - March/April 2018 - Contents
IEEE Power & Energy Magazine - March/April 2018 - 2
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IEEE Power & Energy Magazine - March/April 2018 - Cover3
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