2018/06/11
Mr. Siri ordered all agencies under the Ministry of Energy to urgently analyze the power outage and find prevention measures
to prevent recurrence, stating that a 15% reserve might not be suitable, and is ready to proceed with regional studies for use in the PDP
new version.
June 4, 2018 - Mr. Siri Jirapongphan, Minister of Energy, revealed that in the
case of power outages in several areas on June 1st, the cause was a lightning strike on the
500 kV Nan – Hongsa high-voltage transmission line. The section in Laos experienced a problem, which was an
accident beyond control and an unforeseen event. However, he ordered all relevant agencies to
take this incident as a lesson and analyze ways to prevent its recurrence.
This involves looking into improving the electricity transmission system and increasing power reserves. The figure of
15% might not be suitable, and in the future, this will be considered on a regional basis. This matter is also part of
the revision of the country's new Power Development Plan (PDP 2018).
Mr. Adul Pitakchatwong, Deputy Governor – Transmission System, EGAT, stated that in addition,
the incident also had a cascading effect, causing the voltage and frequency levels of the overall power system
to drop below standard. As a result, the under-frequency protection system in the power system of
23 Small Power Producers (SPP) power plants nationwide activated and disconnected their
units from the system, leading to an additional loss of 1,930 megawatts of generating capacity.
as well.
Mr. Twarath Sutabutr, Director-General of the Energy Policy and Planning Office (EPPO), stated
that the disconnection of SPP power plants from the system is subject to regulations and rules for grid connection.
If there is a problem in the transmission system and the power plant wants to protect itself by tripping
itself from the system to avoid the impact of fluctuating voltage and frequency in the system,
which could affect its own generation system. The conditions depend on EGAT as to whether
it can be done automatically or not.
to prevent recurrence, stating that a 15% reserve might not be suitable, and is ready to proceed with regional studies for use in the PDP
new version.
June 4, 2018 - Mr. Siri Jirapongphan, Minister of Energy, revealed that in the
case of power outages in several areas on June 1st, the cause was a lightning strike on the
500 kV Nan – Hongsa high-voltage transmission line. The section in Laos experienced a problem, which was an
accident beyond control and an unforeseen event. However, he ordered all relevant agencies to
take this incident as a lesson and analyze ways to prevent its recurrence.
This involves looking into improving the electricity transmission system and increasing power reserves. The figure of
15% might not be suitable, and in the future, this will be considered on a regional basis. This matter is also part of
the revision of the country's new Power Development Plan (PDP 2018).
Mr. Adul Pitakchatwong, Deputy Governor – Transmission System, EGAT, stated that in addition,
the incident also had a cascading effect, causing the voltage and frequency levels of the overall power system
to drop below standard. As a result, the under-frequency protection system in the power system of
23 Small Power Producers (SPP) power plants nationwide activated and disconnected their
units from the system, leading to an additional loss of 1,930 megawatts of generating capacity.
as well.
Mr. Twarath Sutabutr, Director-General of the Energy Policy and Planning Office (EPPO), stated
that the disconnection of SPP power plants from the system is subject to regulations and rules for grid connection.
If there is a problem in the transmission system and the power plant wants to protect itself by tripping
itself from the system to avoid the impact of fluctuating voltage and frequency in the system,
which could affect its own generation system. The conditions depend on EGAT as to whether
it can be done automatically or not.
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