IEEE Power & Energy Magazine - March/April 2018 - 43

The design of the integrated support platform
of the SGOS follows general standards-based and
open-system principles.
The overall security for dispatch scheduling scans and calculates n-1 contingencies for static, transient, and dynamic
security within 15 min. The transient stability, voltage stability, and small disturbance stability calculations help decide
preventive control actions that ensure the safe operation
of the grid. an adequacy assessment for critical transmission transfers can also be done using various power flows.
an adequacy assessment for more than ten transmission
transactions can be finished in 10 min for a power grid with
10,000 buses.
based on trajectory sensitivity and by using parallel computing technology, a transient stability decision-making function has also been implemented.

Power Grid Operational Cockpit

ment for power system operation, workflow management
for core business, and operation report management for
daily, monthly, and yearly reports. oMs also has all the
interfaces with outside systems, such as enterprise resource planning, production management, satellite weather
forecast, customer service (trouble calls), and management information.

Operating Practices
with the successful development and large-scale application
of the sgos, the grid dispatch control technology in China
has been upgraded, and the horizontal integration and vertical penetration of the power grid dispatching business has
been realized. The major technological progress lies in the
following practices.

To facilitate the decision-making by the dispatcher, a power
grid operational cockpit (poC) is developed in os2. it is Meeting the Observability Requirement
designed as a new application built on the integrated sup- for Extra-Large Grid Operation
port platform, will serve high-level decision making, and There are 249 sgoss being installed in the sgCC. The sysshow key states of grid operation. it provides functionalities tem in the national control center has been collecting realof operationally monitoring key performance indicators time information for up to 860,000 points covering more
(Kpis), prevention, decision making, and control. a completed than 8,000 power plants and substations in the main netKpi system for real-time grid operation has been created work. during 2011-2015, the system successfully alarmed
in terms of safe, economic, high-quality, and environmen- more than 2,500 times for power grid faults, assisting the
tally friendly operation. each Kpi quantifies a feature of one operator in handling more than 100 serious grid faults sucaspect of power system operation. The Kpi system has been cessfully. The sgos ensured the smooth implementation
implemented as a one-stop user interface for situational aware- of planned maintenance work for the 12,000 main network
ness and control.
Figure 6 shows the design
idea of a poC. it is the topmost functional module of the
Operational KPI Dashboard
os2. based on the support of
Planning
Real Time
Post
the integrated platform and other
functions, the poC is the portal
to the grid operators and proOther
Power Grid Operation Panorama
vides the possibility of directly
Function
KPI Scenarios
knowing what happens and how
Integrated
to proceed next. The main funcControl Panel
tionalities of the poC include
KPI Scenarios
an operational Kpi dashboard,
power grid operation panorama,
and an integrated control panel.

Operation Management
The main functions of the operation management system (oMs)
include the basic data managemarch/april 2018

Integrated Platform

figure 6. A design idea of a POC.
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Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2018