engineering

Kii Channel HVDC system

Kii Channel HVDC system is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kii Channel HVDC system rather than just read about it. In short: The Kii Channel HVDC system in Japan is, as of 2012, the highest-capacity high-voltage direct current (HVDC) submarine power cable system in the world to use a single bipole, with a rated power of 1400MW. The cross channel system between England and France has a larger total capacity, but uses two bipoles rated at 1000MW each.

Key takeaways

Kii Channel HVDC system belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kii Channel HVDC system to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kii Channel HVDC system from memory before moving on to harder problems.

Reference excerpt

The Kii Channel HVDC system in Japan is, as of 2012, the highest-capacity high-voltage direct current (HVDC) submarine power cable system in the world to use a single bipole, with a rated power of 1400MW. The cross channel system between England and France has a larger total capacity, but uses two bipoles rated at 1000MW each. The Kii Channel HVDC system connects the Anan static inverter plant, located south of Tachibana Power Plant on the Japanese Home Island of Shikoku, with the inverter plant at Kihoku on the largest of the Home Islands, Honshu.

History The first stage of this project went in service in the year 2000 with a bipolar voltage of 250 kilovolts (kV) and rated to carry 1400 megawatts (MW). A second-stage upgrade to 500kV has been planned from the outset and the HV cable, DC switchgear and DC reactor are already rated for the higher voltage, but as of 2012 the upgrade has not been put into effect. The project contained several "firsts" when it was originally built, including:

The Kii Channel HVDC system was the first HVDC project to use Gas-Insulated Switchgear (GIS) on the HVDC side The thyristor valves, built by Hitachi, Toshiba and Mitsubishi Electric, used 150mm diameter light triggered thyristors. At the time these were the largest thyristors ever made, and it was another 10 years before thyristors of such large diameter were used again, in the Lingbao 2 and Xiangjiaba – Shanghai HVDC projects in China. The first 50 kilometers of the transmission line run north from the Anan inverter station as an undersea cable. At Yura, there is a switching station, and from there the HVDC line runs for another 50 km as an overhead power line.

References

The 1,400-MW Kii-Channel HVDC System

Worked examples

Example 1 — a first encounter with Kii Channel HVDC system

Start with the simplest possible case. Write down what Kii Channel HVDC system claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kii Channel HVDC system before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kii Channel HVDC system ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kii Channel HVDC system

In research: Kii Channel HVDC system appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kii Channel HVDC system in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kii Channel HVDC system is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2000 establishments in Japan, Electric power infrastructure in Japan, Electric power stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Kii Channel HVDC system outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Kii Channel HVDC system” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kii Channel HVDC system in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kii Channel HVDC system means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kii Channel HVDC system out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kii Channel HVDC system in simple terms?

Why does Kii Channel HVDC system matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kii Channel HVDC system?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kii Channel HVDC system.