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Wireless powerline sensor

Wireless powerline sensor is a computer science 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 Wireless powerline sensor rather than just read about it. In short: A Wireless powerline sensor hangs from an overhead power line and sends measurements to a data collection system. Because the sensor does not contact anything but a single live conductor, no high-voltage isolation is needed.

Wireless powerline sensor — main illustration
Wireless powerline sensor — illustration

Key takeaways

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

Reference excerpt

A Wireless powerline sensor hangs from an overhead power line and sends measurements to a data collection system. Because the sensor does not contact anything but a single live conductor, no high-voltage isolation is needed. The sensor, installed simply by clamping it around a conductor, powers itself from energy scavenged from electrical or magnetic fields surrounding the conductor being measured. Overhead power line monitoring helps distribution system operators provide reliable service at optimized cost.

Communication

In the photos on the right, an antenna on the sensor transmits data to a communication device attached to a nearby utility pole. The communication device gets power from the 240 volt utility line in a residential neighborhood. The device has two antennas. One antenna collects data from the sensors, and the other antenna forwards the data to the electrical utility control center over cell phone service. In some systems, powerline sensors may transmit information on the high voltage conductor itself rather than by transmission of a radio signal.

Measurements The primary purpose of a powerline sensor is to measure current, however, some sensors can either directly measure or derive other data such as:

Conductor temperature Ambient temperature Inclination or the amount of line sagging Wind movement Electric fields Power Generation Distribution and Consumption of electricity

See also Energy management system List of wireless sensor nodes Sensor node Supervisory control and data acquisition Wireless sensor network

References 6. Patel N., Kumar S. (2017),. "Enhanced Clear Channel Assessment for Slotted CSMA/CA in IEEE 802.15. 4", Springer Wireless Personal Communications, Vol. 95, No. 4, pp 4063–4081. https://link.springer.com/article/10.1007/s11277- 017-4042-5 External links

A Wireless Sensors Suite for Smart Grid Applications Power Line Monitoring for Energy Demand Control Archived 2021-02-24 at the Wayback Machine Specifications for a commercially available product Archived 2016-10-18 at the Wayback Machine

Illustrations

Wireless powerline sensor: Wireless overhead power line sensors hanging from each of the three phases of a 4160 Volt powerline in a residential neighborhood, in Palo Alto, California
Wireless overhead power line sensors hanging from each of the three phases of a 4160 Volt powerline in a residential neighborhood, in Palo Alto, California
Wireless powerline sensor: Three powerline sensors hanging on conductors 2 meters to the right of a power pole with a distribution transformer and communication network node
Three powerline sensors hanging on conductors 2 meters to the right of a power pole with a distribution transformer and communication network node
Wireless powerline sensor: Three wireless overhead powerline sensors hanging from the phases of a 4160 Volt powerline and network node attached to a power pole. The photo also shows an unrelated distribution transformer, which reduces 4160 V to 240/120 V.
Three wireless overhead powerline sensors hanging from the phases of a 4160 Volt powerline and network node attached to a power pole. The photo also shows an unrelated distribution transformer, which reduces 4160 V to 240/120 V.
Wireless powerline sensor: Closeup of overhead powerline sensor hanging from one phase of a 4160 volt powerline
Closeup of overhead powerline sensor hanging from one phase of a 4160 volt powerline

Worked examples

Example 1 — a first encounter with Wireless powerline sensor

Start with the simplest possible case. Write down what Wireless powerline sensor claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, 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 Wireless powerline sensor 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 Wireless powerline sensor 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 Wireless powerline sensor

In research
Wireless powerline sensor appears in computer science 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 Wireless powerline sensor 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
Wireless powerline sensor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Electric power distribution, Electric power stubs, Electric power transmission systems, so understanding it makes those chapters shorter.
In everyday life
Look for Wireless powerline sensor 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 Wireless powerline sensor in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Wireless powerline sensor means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Wireless powerline sensor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Wireless powerline sensor in simple terms?

A Wireless powerline sensor hangs from an overhead power line and sends measurements to a data collection system. Because the sensor does not contact anything but a single live conductor, no high-voltage isolation is needed.

Why does Wireless powerline sensor matter?

Because it connects several computer science 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 Wireless powerline sensor?

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 Wireless powerline sensor.

Tags

  • Electric power distribution
  • Electric power stubs
  • Electric power transmission systems
  • Wireless sensor network

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