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Posts Tagged "RT DAS"

18Jun

RT DAS and AT&C Losses

by Team Digireach

RT DAS consists of two distinct important terms.

Data acquisition system is the accumulation of data. Real-time means its is based on the time at which it is performed. The delay of data collection is insignificant hence it is real-time. The time delay of transfer of audio signals when we are in a telephonic conversation is called real-time. The person receiving the audio signals is able to initiate conversation based on the audio input he gets from the speaker in real-time. The response is immediate. Having a delay in the data capturing technology will lead to a system failure in certain circumstances.

 

The other part is acquisition and storage. Collection of important parameters leads to study of the functioning of the system. The operator or administrator can plan accordingly and take preventive action which can increase the efficiency of the system. The purpose of any data acquisition system is to gather useful measurement data for monitoring and control.

Major areas of concern in the power distribution sector are high AT&C loss and poor power distribution reliability.  Hence, RT DAS comes into the picture. To address these problems, accurate measurement, diagnosis and remedial action is essential. Some of the parameters based on which the reliability of power is measured in the terms of SAIFI and SAIDI which requires solution based on real time.

To accurately measure reliability of power distribution network and facilitate utility to take suitable administrative action for enhancement of power reliability. The measurement of reliability shall be ensured by a real time data acquisition system (RTDAS) using RTU at substation.

AT & C LOSS(Aggregate Technical and Commercial Loss)

In absence of feeder metering in the past, there was huge losses in terms of T&D and theft of electricity in agricultural consumption. Agriculture consumption is around 25%, utilities were showing I as 40% and correspondingly T&D losses shown as 25%. There was obviously a large amount of theft. T&D loss figures did not capture the major gap between the billing and the collection. AT&C was introduced to get over this particular problem.

What is AT&C loss?

  • It is the difference between units input into the system and the units for which the payment is collected.
  • It is the clearest measure of overall efficiency of the distribution business.
  • AT&C measure both the technical and commercial losses.AT&C Loss(%) = (Energy Input – Energy Realised) X 100
8Apr

RT DAS (Real-time Data Acquisition System)

by Team Digireach

In today’s world, data is generated at a brisk pace in all domains. Data is the new oil. We help you capture the data and gain insights from them.

We install sensors and other electrical devices like CTs, PTs, circuit breakers, switches and circuit breakers to collect and register data points.

Real site photos of our successful implementation of RT DAS:

RT-DAS system for SAIFI/ SAIDI measurement: GOI is extending financial assistance through various programmes to establish Feeder Remote Terminal Unit (FRTU). FRTU is an intelligent electronic device designed for use in feeder automation.

FRTU based SAIFI/ SAIDI measurement system in Non SCADA towns to accurately measure reliability of power distribution network and facilitate utility to take suitable administrative action for enhancement of power reliability. The same can be ensured by real time data acquisition system (RT-DAS) using FRTU at substation. It shall also facilitate utility to take appropriate measures for improvement of SAIDI/ SAIFI by knowing the reason of poor values of indices

IPDS (Integrated Power Development Scheme) was approved by the government to strengthen sub-transmission and distribution network inlcuding metering at all levels in urban areas.

Earlier scheme of Restructured Accelerated Power Development and Reforms Programme (R-APDRP) is subsumed in the new scheme of IPDS.

Major components of the scheme are:

  • Strengthening of sub-transmission and distribution network
  • Metering
  • IP application – ERP and cuustomer care service
  • Provisioning of solar panels
  • Ongoing works of R-APDRP to be completed

Advantages of implementing RT DAS:

  • Reports (SAIFI/ SAIDI reports for regulators and as per IEEE norms etc.)
  • Operation monitor to operative cycles of switching devices to have preventive maintenance
  • Data in the form of analytics
  • Historical data and MIS (Management Information System)
  • Future compatibility for controllability and technologies such as SCADA/ AMI etc with addons.

Similar projects undertaken by us in Substation Monitoring (RT DAS):

MSEDCL (Maharashtra State  Electricity Distribution Company Limited)

Photos of our successful implementation at site:

Snapshot of our successfully implemented software for RT-DAS:

We have project (field/ office) installations of the following devices:

ConnectedSCADA makes RT DAS a possibility for you. Step into the future of electricity with us.

Electric reliability indices like SAIFI, SAIDI, SAIFI, CAIDI, MAIFI can be gathered from these data collected at your centers.

For more details feel free to contact us

27Mar

Electricity Reliability Indices

by Team Digireach

We are entering an energy intensive world. It is very important to keep track of the energy utilized by the consumers so that necessary action can be taken to optimize it’s usage. There are various reliability indices which help us in determining the efficiency of distribution system.

SAIFI
SAIFI is the average number of sustained interruptions per consumer during the year. It is the ratio of the annual number of interruptions to the number of consumers.

SAIFI = (Total number of sustained interruptions in a year) / (Total number of consumers)

SAIDI
SAIDI is the average duration of interruptions per consumers during the year. It is the ratio of the annual duration of interruptions (sustained) to the number of consumers. If duration is specified in minutes, SAIDI is given as consumer minutes.

SAIDI = Total duration of sustained interruptions in a year / total number of consumers

CAIFI
CAIFI is the average number of interruptions for consumers who experience interruptions during the year. It is the ratio of the annual number of interruptions to the number of consumers affected by interruptions during the year. Consumer is counted only once regardless of the number of interruptions.

CAIFI = Total number of sustained interruptions in a year/Total number of consumers affected.

CAIDI
CAIDI is the average duration of an interruption, calculated based on the total number of sustained interruptions in a year. It is the ratio of the total duration of interruptions to the total number of interruptions during the year.

CAIDI = Total duration of sustained interruptions in a year/total number of interruptions.

MAIFI
MAIFI is the average number of momentary (less than 5 minutes) interruptions per consumer during the year. It is the ratio of the annual number of momentary interruptions to the number of consumers.

MAIFI = (Total number of momentary interruptions in a year ) / (Total number of consumers)

The above indices are the commonly used parameters used to judge the reliability for electricity generation, transmission and distribution. These outage indices are based on the duration of each power supply interruption & the frequency of interruption. It is clear that all three major functional components of the power system – generation, transmission & distribution contribute to reliability.

IoT and monitoring of electrical parameters enables to keep track of the various energy parameters which can be used to further judge the reliability of electricity distribution. The tariff can be adjusted according to this reliability indices. It would be a win-win situation for the all the stakeholders in electricity domain. Also, the end consumers will be benefited and charged according to the quality of power delivered. It would be a step towards Electricity 4.0.

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.

 

18Feb

Internet of Smart grids

by Team Digireach

A smart grid is an IoT enabled grid of geographically proximate devices which uses an Internet connection to receive and analyze sensory information.

Smart grids are generally classified according to the scope of their operations. These classifications are: home area network, neighborhood area network, access network, backhaul network, core and external networks.  

The devices connected in a smart grid include smart meters, smart appliances and renewable energy resources.

Benefits of a Smart grid

Smart comparisons

The information is gained in such a way that it is easy to compare readings on the various devices connected to the grid and take smart decisions.

Macro smart and micro smart

A smart grid enables you to look at the grid of devices as a whole and as individual devices. Gaining different perspectives is a very important factor in understanding the needs of an area and charting out a path that utilizes generated power in the most efficient and profitable way possible.

Smart energy resources

A smart grid makes using renewable environment friendly sources of energy a plausible reality. With IoT enabled devices, renewable resources like solar energy and wind energy can be harnessed to greater effect. Previously considered unwieldy, the extent of monitoring now makes it a feasible reality. Solar or wind setups generally consist of many units to generate sufficient power.

Smart energy usage

With a smart grid you can map the accuracy of electricity consumption of a particular area. A record of the surges and ebbs in the pattern of energy usage in a particular time period can help fine tune the services provided. This is cost effective and has the benefit of preventing electrical outages.

Smart grids for smart cities

In the near future, smart cities will emerge and rely on having smart grids to function. A smart city is one where digital technology and an Internet connection is used to gain data, analyse it and deploy solutions to create a sustainable city that uses its resources to the maximum.

Security risks

An IoT enabled Smart Grid is vulnerable to cyber attacks because of the Internet connection that enables a 2 way communication pathway.  

Ill intentioned hackers can easily exploit this weakness for crimes like identity theft, data tampering, unauthorized access, and eavesdropping with potentially disastrous effects.

Parting thoughts

IoT is ground breaking technology that is gaining momentum at astounding speeds. It won’t be long before there are inventive solutions to these challenging problems.

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