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Progress of Thermal Power Plant Projects

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Tung Hsiao Power Plant (THPP) Renewal Project

07/31/20

Project Description

Background

In order to ensure a stable and sufficient supply of electricity in the future, and in conjunction with the government’s priority to use clean natural gas to generate electricity, and to enhance power generation performance and competitiveness, with a view to diminish the volume of greenhouse gas exhaust produced per KWh, Taiwan Power Company (TPC) is undertaking the Tung Hsiao Power Plant (THPP) renewal project which located on the north side of the Nanshixi exit of Tung Hsiao Township, Miaoli County. The project involves the installation of three 892 MW Combined cycle units, totally 2677.8 MW.

Original Plot Plan

Original Aerial Photo

 

Project Location and Scope

Tung Hsiao Power Plant (THPP) renewal project is located in Tung Hsiao Township, Miaoli County which is on the west coast of the central position in Taiwan. The geographical location is approximately 120 ° 39’40 ”E, 24 ° 29’36” N. The site of THPP is a quadrilateral reclaimed land with a length of about 688m and a width of about 630m. The area is about 0.43 km². The northeast side is TungHsiao Railway Station, and the east side is adjacent to the Xibin Expressway. The south side of the site is adjacent to the mouth of Nanshi River, and the west side is the Taiwan Strait.

 

New Design Units Specification
Item Specification
Units 3
Single Unit Capacity 892.6 MW
Unit Type Combined cycle unit
Thermal Efficiency 60.7 % (LHV)
Net Combustion 5,931 kJ/kWh (LHV)
Gas turbine In-house/industrial/3600rpm
Heat recovery steam generator In-house
Steam Turbine In-house/vertical arrangement/3,600 RPM
Generator Hydrogen cooling
Transformer 395MVA/three phase(131.6MVA/phase×3),345-19.5kV

 

Progress Status

Project Progress
Overall progress (%) (Jun-2020)
Schedule Actual Difference
99.71 99.74 0.03
 
Commercial Operation Date (COD)/
Obtaining Electricity Generation license
Unit 1 Unit 2 Unit 3
2018/02/27 2019/05/30 2020/05/26
Note:
  1. The revised schedule of Unit 3 commercial operation is 2020/6/30 as approved per Executive Yuan's letter No. 1070035115 dated 2018/11/20. The actual date of Unit 3 commercial operation was on 2020/5/26.
  2. The total cumulative scheduled progress is based on the date of this project completion(2022/12/31) as 100%. The date of project completion was revised to 2022/12/31 per the approval of Excutive Yuan on 2020/3/13. The date of units commerical operation and the investment amount remain unchanged.

 

Construction Status:
  1. Power Block:
    Unit 1:2018/01/15-Official Dispatch Date (ODD), 2018/02/27-Commercial Operations Date (COD)
    Unit 2:2018/11/05-Official Dispatch Date (ODD), 2019/05/30-Commercial Operations Date (COD)
    Unit 3:2018/12/14-Official Dispatch Date (ODD), 2020/05/26-Commercial Operations Date (COD)

  2. Seawater Piping of Circulating Water System: 
    All 203 pipings have been installed completely. Only piping protection works has not been completed yet. The north dock had been dredged so that the stone dumper was able to come into dock since June 1,2020. The sand extraction and cleaning works are continued to conduct on multiple working areas at the same time as long as weather permits. Meanwhile, dumping stone works for piping protection is continuing. The maximum working rate of dumping stone can be up to 5400M3/day.

Environmental Planning

  1. Air Quality Control System (AQCS) used for environmental protection

    Pollution Source Original Unit New Unit
    SOx 20 ppm 10 ppm
    NOx 40 ppm 18 ppm
    Particulate 28 mg/Nm3 Microscale