INGENIEUR
with the power grids operating in
smaller independent units.
Approach for Technical
Harmonisation
Taking into consideration the
challenges described above,
the approach for harmonising
the technical standards of
AMS power grids to prepare
for full development of APG is
discussed briefly in this section.
Practices that are essential
for harmonisation to ensure
a secure and reliable APG,
par ticularly interconnecting
points between AMS power,
that deliver electricity supplies
of desired qualit y to all
interconnected countries, need
to be identified through an
analysis of data and information
submitted by nominated AMS
national experts.
A set of minimum common
standards, consisting mainly
of common elements in AMS
current grid codes that have
been in force for many years and
some recommended standards
compiled from lessons learnt
from other large integrated
power grids, must then compiled
for further analysis.
Potential Challenges of
Technical Harmonization
The power system of one
country may be very different
from its neighbouring countries.
Differences include total system
demand, generation fuel mix,
seasonal load variations, system
voltages, etc. Such differences
may cause some difficulties if
common technical standards
of a few countries are to be
adopted throughout an ASEAN
integrated APG.
Generation and transmission
capacities of some national
power grids are relatively
smaller in some countries
compared with their neighbours.
The ability of smaller power
systems
to
withstand
disturbances and power swings
is generally weaker than power
systems with large capacities.
This will have to be taken into
consideration when developing
the minimum common technical
standards.
A few AMS do not have
integrated national power grids –
certain regions within the country
may operate on “islanded”
power grids not connected to
power grids of other regions.
Although it is desirable that
these countries should integrate
Figure 2:
Harmonization of
Grid Standards
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VOL 55 JUNE 2013
their regional power grids into a
large national power grid before
the full development of APG,
this may not be economically
and technically feasible. Careful
planning and development of
the minimum common technical
standards will have to take
into consideration that these
countries may wish to integrate
their regional power grids into
the APG at some stage in the
future.
There are mandatory local
technical and per formance
standards in each country to
meet the country’s specific
needs for electricity supply
to serve the consumers and
its economic activities. The
minimum common technical
standards to be developed
will have to complement local
technical and per formance
standards. Each country may
have different priorities in its
own way of controlling and
operating its power grids and
the operators in power system
control centre/load dispatch
centres are familiar with these
practices. Again, the minimum
common technical standards
to be developed will have to
complement such priorities
and practices in normal power
system operation.
Legislation and Grid Codes
Based on the information
submitted and information
gathered from authoritative
documents, Table 1 summarises
the current states of legislation
of electricity sector and grid
code in each of the AMS.