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Category "substation"

1Aug

Distribution Transformer Monitoring

by Team Digireach

Electricity plays a very important role in our daily life. We depend on it for light to see, energy to cook, water to drink and so much more. There are many components and equipments involved in regulating distribution of electricity according to usage. The most critical of these is the transformer. Distribution Transformers (DTs) play a crucial role and act as hub in electrical distribution network, and its correct function is essential for reliable power supply to consumers. Catastrophic failure of a critical transformer would result in power outages in the downstream network and could cause significant economic and environmental challenges.

Let us review some of the factors by which Distribution Transformers’ life cycle can get adversely affected-

  1. Unplanned expansion of networks which causes overloading, resulting in additional losses and generates waste heat.
  2. Incompatible devices being run on transformers, such as a 3 phase device being connected to a single phase transformer.
  3. Stealing of power by hooking from the main supply, unbalancing the transformer or overloading it.
  4. Oil drainage, poor power factor, etc. also cause the transformer to age rapidly.

In India, there is an increase of approximately 14% in the amount of DTs in the network. However, these transformers rarely have intelligence or communication capabilities. Lack of information on the loading of the transformer is one of the main reasons for inefficient distribution network. Transformers are to be monitored very cautiously on a regular basis to avoid unexpected interruption and to anticipate upcoming problem. This has led to the advent of smart grids in India.

Smart grids enable the company to monitor the Distribution Transformer’s working, provide the facility to measure critical parameter and transmit the information to remote data center for analysis and visualization which help system operators to monitor and control the system.

Today, most utilities focus on Smart Grid technology and other aspects that are crucial for the success of their Smart Grid vision. This Internet of Things (IOT) powered Smart Grid technology will help the utilities industry to optimally utilize transformers and identify problems before any catastrophic failure occurs. This online-measuring system is used to collect and analyze temperature data over time. Thus Transformer Monitoring will help to identify or recognize unexpected situations before any serious failure which leads to a greater reliability and significant cost savings.

29Mar

First step towards Smart grid

by Team Digireach

The world is now moving towards Electricity 4.0. Energy efficiency is an inherent component of Industry 4.0. A smart grid which monitors the inflow and outflow of energy data collected through strategically placed sensors is the first step in realizing Electricity 4.0.

Various parameters as mentioned below track the usage of energy, both from a quantity and quality perspective.

1. SAIFI (System Average Interruption Frequency Index)
SAIFI is measured in units of interruptions per customer. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.10 interruptions per customer.

2. SAIDI (System Average Interruption Duration Index)
SAIDI is measured in units of time, often minutes or hours. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.50 hours.

3. CAIFI (Customer Average Interruption Frequency Index)
CAIFI is designed to show trends in customers interrupted and helps to show the number of customers affected out of the whole customer base.

4. CAIDI (Customer Average Interruption Duration Index )
CAIDI gives the average outage duration that any given customer would experience. CAIDI can also be viewed as the average restoration time.
CAIDI is measured in units of time, often minutes or hours. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.36 hours.

5. MAIFI (Momentary Average Interruption Frequency Index)
MAIFI is useful for tracking momentary power outages, or “blinks,” that can be hidden or misrepresented by an overall outage duration index like SAIDI or SAIFI.

All these are reliability indicators used by electric power utilities.
The availability and reliability of electricity is crucial and an interruption or diminished quality would lead to serious consequences.

Power disturbances/blackouts or poor quality power impact critical power buildings on the level of business continuity, costs, safety or all of these.

The ultimate aim of Electricity 4.0 is to enhance maintenance and minimize disruptions. Tracking the indices listed above helps to monitor these important data points. Necessary alterations can be made as necessary once these data is available with the concerned authorities.

Power is the backbone of the industry. It is extremely important to make the foundations sturdy before we venture into implementing Industry 4.0 in other segments. A failure in a critical component in the manufacturing process results in enormous costs, so do issues with regards to electricity and power.

25Feb

IoT in the energy sector

by Team Digireach

Since the advent of the Internet of Things, the world has seen many fantastic seeming ideas transforming into reality. From ideas that are merely flashy, to life changing events that impact our very existence as a race, life as we know it is changing its shape. It is no wonder that this era is touted as the fourth industrial revolution.

One of the biggest benefits of IoT is that we can turn away from harmful exhaustible sources of fuel to more sustainable ones like solar energy. This gives us the chance to combat global warming and undo the damage that has already been caused.

So how does IoT help us do that?

The Internet of Things is a concept that equips ordinary devices with an Internet connection to enable them to capture data, communicate and compare. While solar energy had captivated the world’s imagination, it previously wasn’t very viable because it needed to be monitored closely and its components adjusted accordingly to be of real use. Now an Internet connection enables that and much more.

For IoT to be truly effective, energy companies need to decide how it can be used to maximum effect. What data should be captured, how the gathered data should be handled and what is the best way to deal with problems are just a few of the factors to be considered.

The main focus for companies is to lower costs and keep upgrading services. Manual checks have become redundant and more expensive without even the assurance of accuracy. Now everything can be monitored remotely. It’s quick and convenient and requires low investment. A company’s profit is directly proportional to its understanding of customers.

Naturally, with these tools, company representatives can figure out the problem and its solution before it is actually reported by customers.

Apart from providing good and timely services, the company’s biggest worry is if the amount of power produced is equal to the power consumed. An imbalance in this regard is obviously wasteful.

Hopefully, Zero-Net Buildings, a product of IoT, AI, solar, batteries, and LED light systems, will soon become the norm rather than a little known rarity. These buildings are designed such that power produced is equal to power consumed. The result is lower bills and lesser emissions.

Another invention that stems from IoT and conserves energy is the Digital Twin that seems to have emerged straight out of an Iron Man movie. This technology creates a digital simulation of the physical machine with the help of sensors, AI, IoT, spatial movement graphs and Machine Learning. This simulation mimics the real life object/human and makes it easy to handlers to observe and improve in real time.

Despite the global situation at hand, the future is bright and warm. And it is in our hands to make it possible.

 

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