Preparation of New Gas for Power Generation An …eg.hkie.org.hk/Upload/Doc/1fb66b0e-e7fd-4ac2-a7c6-82378a323e3a_CLP...Upgrade turbine control system to MkVIe Mk VIe Upgrade generator

April 2012

Preparation of New Gas for Power Generation – An Engineering Perspective

By

Dr Simon Chan Deputy Director (BPPS/PBPS)

2

Introduction

Black Point Power Station, Single Shaft Power Train

Natural Gas Supply Infrastructure

Gas Sources, New Gas Receiving Station, Plant Modification

Challenges

Operation Phase, Looking Ahead

3

Black Point Power Station

• CLP serves over 2.3 million customers , representing 80% of HK’s population

• The first power company in Hong Kong to incorporate natural gas into its fuel mix (1996)

• Black Point Power Station (2,500MW) is one of the largest gas-fired power stations in the world, with reliable operation for over 15 years

• Existing gas supply is from the Yacheng gas, Y13-1 field near Hainan Island. Gas is already depleting and new sources are needed.

4

Black Point Power Station

5

Black Point Power Station – Plan View

6

Black Point Power Station – Single Shaft Power Train

• Designed for two shifting

operation

7

CLP emissions reduced over 82%

despite electricity demand rose 80%

Environmental Performances

8

Increasingly stringent emissions caps ahead

RSP - 57%

SO2 - 48%

NOX - 32%

45%

0

20

40

60

80 To

tal

em

issio

ns

(K

T)

1997

(Base Year)

2010 2015 2020

?

NOx

SO2

RSP

9

HKSAR Government Proposal for 2020 Fuel Mix

Hong Kong Fuel mix

2009

Gas

23%

Coal

54%

Nuclear

23%

Government Proposed

Hong Kong Fuel Mix

2020

Gas

40%

Coal

<10%

Nuclear

50%

RE

3-4%

10

Prospective Gas Sources

鄯善站

徐州

安平

北京

霍尔果斯

轮南

乌鲁木齐

中卫 靖

边 西安

龙岗

忠县

淮阳

南宁

广州

南昌

上海

青山

杭州

安平

北京 红柳

瑞丽

昆明

重庆

贵阳

榆林

湘潭 樟树

鄯善站

成都 武汉

深圳 香港 珠海

湛江

海口

翁源

大连

甪直

徐州 郑州

邓州 十

堰

安阳

温州

厦门 汕头

钦州

伊宁

博乐

706泵站

天水 合作 临夏

石嘴山

汉中

平顶山

云应

麻丘 咸宁

鹰潭

景德镇 宁波

怀化

永州 郴州

衡阳 娄底

韶关 清远

鹤山

梅州

佛山 贵港 崇左

龙岩 永安

南平

金昌

格尔木

敦煌

普光

吐鲁番

Horgos

中卫 靖

边

Shanghai

WEP2 博乐

合作 临夏

石嘴山

漯河

咸宁

怀化

永州 郴州

衡阳

崇左

龙岩

HK

WEP1

1. Y13 -1- Existing Yacheng gas field

2. Y13-4 – small supplement to Y13-1

3. 2nd West –to- East Pipeline (WEP2)

4. LNG – Shenzhen terminal

Turkmenistan

3

1 2

4

MOU between HKSAR and Central Government signed in Aug 2008 to supply energy to HK for 20 years

• New gas field in South China Sea • Second west-east gas pipeline, bringing gas from Turkmenistan • LNG terminal in the Pearl River Delta

New gas price will be 2-3 times of the existing price which was contracted ~20 years ago

11

DaChan-BPPS New Gas Pipeline

New Pipeline

Between DaChan Launch Station and BPPS

~20km, 32” diameter

12

New Gas Pipeline

• Gas pipeline installation started in PRC waters

• Laying pipe for gas header in BPPS Source : CNPC website

Source : CNPC website Source : CNPC website

13

New Gas Infrastructure

DaChan Island

Pipeline

BPPS Modifications

New GRS

New Gas Receiving Station (GRS)

• Pig receiver, filter and fiscal meter

• Water bath heaters and pressure control module

• 28” fuel gas header to BPPS

BPPS Modifications

• Turbine Control and Generator Exciter Control Upgrades

• Fuel Quality Management System (FQMS) for Gas Conditioning

• New Fuel Gas Nozzles for Higher Heating Value Gas

14

Gas Heaters

New Gas Pipeline

Landing Point Vent Stack

Pig Receiver Pig Receiver

Gas Filter Module

Water Bath heater

Metering Module

Pressure

Control

Module

New Gas Receiving Station (GRS)

15

15

New Gas Receiving Station – Construction in Progress

Water Bath

Heater

Pressure Control

Module

Metering

Module

Gas Filter

Module

New Vent Stack

Knock

Out Drum

16

BPPS Modifications - Control Systems

Mk V EX 2000

Air

Natural Gas

Steam

Generator GT ST HRSG

EX 2100 Mk VIe

New Gas

FQMS

Upgrade turbine control system to

MkVIe

Mk VIe

Upgrade generator excitation system to EX2100

EX 2100

Upgrade control screens in Control

Room

Three Units were completed successfully

17

October 2011

New Gas

MWI

18

Gas Turbine Fuel Nozzles

GE used the MWI in the

combustion design for

nozzle size

determination

SGT

LHVMWI

g

Modified Wobbe Index (MWI)

New nozzles required for high heating value gas

MWI

19

Looking Ahead

• Complete the installation and commissioning of new gas receiving station and related plant modification work by end of 2012 and early 2013 respectively

• Set up dedicated operation and maintenance (O&M) team and associated systems to manage the new gas facilities

• Develop practices for operation, maintenance, asset management and safe working

• Provide training to the O&M team for safe operation

• Establish communication/coordination arrangement between gas suppliers and users for reliable operation

• Develop emergency response plan for various abnormal operational scenarios

20

End

Thank you