臺灣博碩士論文加值系統

摘要
所謂分散型電力裝置(Distributed Power Generation)或分散型電
源(Dispersed Power Generation Systems)是指靠近負載端而發電容量
較小的小型發電機組設施，其可以形成區域供電系統或與大型電力
系統併聯。
由於以往的配電都是由電力公司單向供電，不論在控制、管理、
維修或是收費上都較單純，但是當線路上併聯很多分散型電力（簡
稱DG）時，此時既有配電系統供電可靠度及電力品質之維持及人員
設備安全之維護都將較為複雜，其對既有配電系統將造成衝擊。
論文採用台電某一饋線作為研究對象，變電站主變壓器規格為
3∮69KV/22.8KV 25MW 提供八個節點的用電，依既有數據並經過電
腦程式模擬後，可以了解該饋線於目前使用上，各節點電壓尚符合
電壓允許值的規定，但該饋線於日後可能面臨的情況，我們事先可
以採用電腦程式模擬，且作者將會以台電傳統作法提供的概估原則
找出該饋線電容器可能的設置位置及容量，並以電腦程式模擬，證
明台電傳統作法提供的估算原則並非適用於各種情況。

ABSTRACT
The so-called Distributed Power Generation or Dispersed Power
Generation System refers to small power generator that is closed to the
load terminal and the power generation capacity is comparatively less. It
can be formed as area power supply system or can be connected in
parallel to large-scale power system.
For distribution in the past, the Taipower would supply a one-way
power, therefore this was simpler in respect of control, management,
repair or fee collection. However, when there are many dispersed power
generation systems (abbreviated as DG) on the circuit in parallel
connection. At this time, the reliability of the power supply of the
distribution system and the maintenance of power quality and
maintenance of personnel and equipment safety will be more complex
and it will cause impact on the existing distribution system.
This thesis adopts a feeder of Taipower as the research target. The
substation main transformer specification is 3∮69KV/22.8KV 25MW
that provides power for eight nodes. Based on the existing data and after
computer program simulation, one can understand that for the present
utilization of that feeder, the voltage of various nodes can still conform
to the provision of the permissible value of voltage. However, in the
future, that feeder may encounter situation. Beforehand we can adopt
II
computer program simulation. And the author will base on the traditional
method of Taipower and that is general estimate principle to find out the
possible establishment position and capacity of the capacitor on that
feeder. In addition, computer simulation is utilized to prove that the
estimate principle in the traditional way of Taipower is not applicable to
various conditions.

TABLES OF CONTENTS
Page
ENGLISH ABSTRACT ···············································································I
CHINESE ABSTRACT ···············································································III
ACKNOWLEDGE·······················································································IV
TABLES OF CONTENTS ···········································································V
LIST OF FIGURES······················································································VIII
LIST OF TABLES························································································X
CHAPTER
I. INTRODUCTION··················································································1
1.1 Background Introduction ··························································1
1.2 Research Method Step································································3
1.3 Chapters and Sections General Description ·······························4
II TYPES AND EXPLANATION OF DISPERSED POWER
GENERATION ······················································································7
2.1 Preface ······················································································7
2.2 Types of Dispersed Power Generation ·······································8
2.2.1 Photovoltaic················································································8
2.2.1.1 Independent················································································8
VI
2.2.1.2 Mixed System·············································································10
2.2.1.3 Parallel Connection System························································10
2.2.2 Wind Power················································································11
2.2.2.1 Characteristics of Wind Power ···················································12
2.2.2.2 Technological Maturity of Wind Power ·····································19
2.2.3 Cogeneration ··············································································19
2.3 Effect of Dispersed Power Generation on Electricity Quality of The
Existing System··········································································20
2.3.1 Voltage Regulation ·····································································21
2.3.2 Harmonic Problem ·····································································23
2.3.3 Voltage Flicke·············································································25
2.3.4 Reverse Power Flow ·································································25
2.3.5 Wrong Action of The Protective Relay·······································27
2.3.6 Islanding of dispersed power······················································27
III. COMPARATIVE ANALYSIS ON THE VOLTAGE AFTER
INSTALLATION OF DISPERSED POWER GENERATION IN THE
ELECTRICAL SYSTEM ·····································································29
3.1 On-load tap transformer ·····························································29
VII
3.2 Application of on-load tap··························································31
3.3 Electrical system structure··························································33
3.3.1 Basic information of the electrical system model·······················36
3.4 Simulation of various conditions················································37
3.5 Analysis of simulation result······················································44
IV. ANALYSIS OF FEEDER CAPACITOR POSITION ····························67
4.1 Preface························································································67
4.2 Application on The Feeder ·························································67
4.3 R I 2 Loss Constituents ·····························································70
4.4 Advantage of Application of Capacitor ······································70
4.5 Types of Capacitor Installation Position·····································71
4.6 Power System Structure ·····························································75
4.7 Simulation of Various Conditions ·············································76
4.8 Analysis of The Simulation Result on The Taipower Traditional
(capacitor) general estimate method ·········································81
V. CONCLUSIONS AND SUGGESTIONS ··············································89
REFERENCES·····························································································95

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