engineering

Shin-Shinano Frequency Converter

Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter rather than just read about it. In short: Shin-Shinano Frequency Converter (新信濃変電所, Shin Shinano Hendensho) is the designation of a back-to-back high-voltage direct current (HVDC) facility in Japan which forms one of four frequency converter stations that link Japan's western and eastern power grids. The other three stations are at Higashi-Shimizu, Minami-Fukumitsu, and Sakuma Dam.

Key takeaways

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

Reference excerpt

Shin-Shinano Frequency Converter (新信濃変電所, Shin Shinano Hendensho) is the designation of a back-to-back high-voltage direct current (HVDC) facility in Japan which forms one of four frequency converter stations that link Japan's western and eastern power grids. The other three stations are at Higashi-Shimizu, Minami-Fukumitsu, and Sakuma Dam.

Converter equipment The HVDC back-to-back facility Shin Shinano uses line-commutated thyristor converters. The station houses two converters, one of which opened in December 1977, the other in 1992. The original 1977 converter was one of the first thyristor-based HVDC schemes to be put into operation in the world and used oil-insulated, oil-cooled outdoor thyristor valves supplied by Hitachi (60 Hz end) and Toshiba (50 Hz end). A special workshop was provided on the site, in which valve maintenance (for example replacing failed thyristors) could be carried out under clean conditions in order to avoid contamination of the oil. The 1992 converter uses more conventional air-insulated, water-cooled thyristor valves. In 2008 the original 1977 converter was decommissioned and replaced by a third converter, similar in design to the 1992 converter but using light-triggered thyristors. The Shin-Shinano link operates with a DC link voltage of 125 kV for each converter. The station was initially rated at 300 MW. In 1992, with the addition of the second 300 MW converter, the maximum transferable power was uprated to 600 MW.

See also Energy in Japan Kii Channel HVDC system HVDC Hokkaido–Honshu

References

External links

CIGRÉ B4 Compendium of HVDC Schemes, 2009. Archived 2013-02-26 at the Wayback Machine Substations of the Tokyo Electric Power Company (in Japanese) www.transmission.bpa.gov/cigresc14/Compendium/SHINSHIN.htm (archived copy) www.transmission.bpa.gov/cigresc14/Compendium/Shinshin%20Pictures.pdf (archived copy)

Illustrations

Worked examples

Example 1 — a first encounter with Shin-Shinano Frequency Converter

Start with the simplest possible case. Write down what Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter

In research: Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter 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: Shin-Shinano Frequency Converter is common in secondary-school and first-year university syllabi. It links to neighbouring topics Converter stations, Electric power infrastructure in Japan, Electric power stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Shin-Shinano Frequency Converter 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.

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How to study Shin-Shinano Frequency Converter in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Shin-Shinano Frequency Converter in simple terms?

Why does Shin-Shinano Frequency Converter 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 Shin-Shinano Frequency Converter?

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 Shin-Shinano Frequency Converter.