{"id":27337,"date":"2017-10-11T09:11:09","date_gmt":"2017-10-11T09:11:09","guid":{"rendered":"https:\/\/www.zivautomation.com\/news-and-events\/noticias\/editorial_beyond_ami\/"},"modified":"2020-03-27T11:11:15","modified_gmt":"2020-03-27T11:11:15","slug":"editorial_beyond_ami","status":"publish","type":"post","link":"https:\/\/www.zivautomation.com\/es\/news-and-events\/noticias\/editorial_beyond_ami\/","title":{"rendered":"Metering \u2013 Beyond AMI: Low Voltage Grid Operation"},"content":{"rendered":"

Editori<\/strong>al By Aitor Amezua, ZIV Distribution Automation BU Development Manager<\/strong><\/h3>\n
\u00a0For Metering International ISSUE 4-2017<\/a><\/div>\n
\n

Smart electricity meters are a reality.\u00a0Smart meters combine different\u00a0technologies that range from
\ncurrent\/voltage measurements,\u00a0energy and power calculations \u2026 to the\u00a0integration of different telecommunication\u00a0interfaces (powerline, wireless or wired\u00a0communications).<\/p>\n

A good example of the application of different\u00a0telecommunication interfaces is the ESMR5\u00a0smart meter that ZIV is developing for Enexis.This smart meter integrates a wired interface\u00a0to communicate with the customer, with\u00a0wireless M-Bus communication (frequency\u00a0range of 868Mhz) to collect data from other
\nmeters in the vicinity (water, heat or gas\u00a0meters). It integrates LTE telecommunications\u00a0to share information with the central system\u00a0using the DLMS protocol.<\/p>\n

\"\"<\/p>\n

 <\/p>\n

In all the countries that have decided to\u00a0deploy smart meters, both customers and\u00a0DNOs are achieving important benefits\u00a0using this technology. Electricity customers\u00a0can receive near real-time information
\nabout their consumption, allowing them\u00a0to implement energy efficiency policies.
\nDistribution network operators can gather\u00a0data about their low voltage network which\u00a0improves their grid visibility.<\/p>\n

LV supervision, beyond AMI<\/h4>\n

Smart meter vendors have had to surmount\u00a0many technological challenges in order to\u00a0provide integrated advanced functions in\u00a0a single meter device at a very competitive\u00a0cost. The good news is that the technologies\u00a0developed as a result of this effort have\u00a0opened the door to a new family of products\u00a0focused on LV grid operation.<\/p>\n

In this article, we would like to highlight how\u00a0LV grid visibility can be improved by adding\u00a0LV smart devices at specific grid locations\u00a0such as LV feeders and LV branches. These\u00a0LV smart devices make use of the technology\u00a0already available in smart meters to provide\u00a0additional data so that distribution network\u00a0operators have a clear view of the LV grid\u00a0status and condition.<\/p>\n

Operating the grid to improve\u00a0quality of service<\/h4>\n

Continuity of supply is a must for DSOs\/\u00a0DNOs, thus a reduction in the SAIFI and\u00a0SAIDI figures is one of the indicators used to\u00a0show performance improvement of the grid\u00a0operators. Loads, such as electronic devices,\u00a0appliances, inverters\u2026 which are sensitive to\u00a0power disturbances are increasingly being\u00a0connected to the grid. Consequently, the
\nmeasurement of power quality (PQ) parameters\u00a0is becoming essential for network operators to
\nminimise the impact of voltage sags, swells or\u00a0harmonics on a customer\u2019s installation.<\/p>\n

Continuously monitoring the LV grid enables\u00a0early detection of power outages and power\u00a0disturbances that may have an impact on a\u00a0customer\u2019s power quality. Status of blown\u00a0fuses, loss of neutral and other events which\u00a0are detected and reported to the network\u00a0operator as soon as they occur, minimising
\nthe interruption time.<\/p>\n

Therefore, using these devices, which are\u00a0available on the LV network to signal voltage\u00a0outages by passing this information on to\u00a0the network operator will allow action to be\u00a0taken to reduce the interruption time. One step further is to automatically operate\u00a0the grid combining the LV information with\u00a0data provided by fault passage indicators and\u00a0MV automation systems to restore the system
\nto a healthy state.<\/p>\n

To take advantage of the possibilities\u00a0provided by the new generation of smart\u00a0devices and sensors connected to the LV\u00a0grid and to obtain these data, they must be\u00a0integrated into the utility operation systems.\u00a0Utilities have reported a reduction of up\u00a0to 70% in the SAIDI index for the 2001-2016
\nperiod with these improvements. Furthermore,\u00a0up to 35% reduction in operational expenses\u00a0per customer have also been achieved.<\/p>\n

Improving efficiency, reducing\u00a0losses<\/h4>\n

\"\"Energy strategy for 2030 in the EU fixes a\u00a0target of 27% energy savings compared to\u00a0\u2018business as usual\u2019 figures. Meeting this\u00a0target requires actions to improve the overall\u00a0efficiency of the distribution networks.\u00a0Energy losses have always been a concern for\u00a0utilities. There is a direct economic impact
\non the business. Mandates of the EU and\u00a0member states nails this figure down and\u00a0formalises a commitment.<\/p>\n

Technical losses, measurement errors and\u00a0fraud detection require accurate and reliable
\ninformation on the flow of energy. The most\u00a0frequently used method calculates the balance
\nbetween the energy delivered by a transformer\u00a0or a feeder and the total energy metered\u00a0in smart meters connected to the feeder or\u00a0transformer. Resolution of the data and its\u00a0mapping to the grid topology influence the\u00a0accuracy of the results of the investigations.<\/p>\n

Feeder monitoring produces high value\u00a0information for LV grid operation and\u00a0maintenance providing online updated\u00a0network topology. This method avoids\u00a0the cost of field work by the crews and
\ndramatically reduces the time required to\u00a0update the information in the utility\u2019s GIS.\u00a0For power line carrier (PLC) enabled\u00a0meters, ZIV has developed a technique for\u00a0the identification of which smart meter
\nis connected to which LV feeder based\u00a0on a measurement of the strength of the\u00a0powerline\u00a0 communication signal received from each meter in the transformer substation.\u00a0This technique produces\u00a0excellent results in the field.<\/p>\n

Efficiently managing network\u00a0assets<\/h4>\n

Load imbalances among LV grid phases and\/or\u00a0feeders impacts efficiency because it prevents\u00a0the full capacity of the system being exploited.\u00a0The optimal load arrangement is therefore\u00a0determined by combining smart meter data,\u00a0feeder and transformer output measurements\u00a0with network topology information. As a\u00a0result of this optimisation, the life of the\u00a0assets is prolonged, deferring investments in
\nunnecessary network extensions.\u00a0Similarly, continuously monitoring MV\/LV\u00a0transformers provides data to determine the\u00a0efficiency, usage factor, thermal stress and\u00a0life expectancy. Based on this information,
\nDNOs can make decisions to extend the\u00a0life of the transformer in a certain location,\u00a0replace it with a smaller or bigger one, or\u00a0install a new one with lower losses.<\/p>\n

RES\/DER, storage and EV\u00a0integration<\/strong><\/p>\n

The EU has also stated in its 2030 energy\u00a0strategy that there must be a target of\u00a0at least 27% share of renewable energy\u00a0consumption. Member states have\u00a0subsequently adopted renewable energy
\nprogrammes to meet this requirement.\u00a0Renewable energy connected to LV networks,\u00a0especially in residential areas (urban or\u00a0rural) cause effects for which the networks\u00a0were not originally designed. Similarly, other\u00a0distributed energy resources can also affect\u00a0grid operation. New loads, such as electric
\nvehicles and storage, demand new solutions\u00a0to be effectively integrated in the grid.\u00a0LV supervision can be the cornerstone for the\u00a0integration of new influences into the network\u00a0and improve the quality of supply and service\u00a0for every customer connected to the grid.<\/p>\n

ZIV solution for LV supervision<\/h4>\n

The ZIV solution consists of two devices:\u00a0the LV feeder supervisor (5CTI) <\/a>and the LV\u00a0controller (4CCTI).<\/a>
\nThe 5CTI feeder supervisors provide\u00a0information to calculate energy losses in\u00a0a transformer and LV feeder and compare\u00a0this with average network losses to detect\u00a0deviations, therefore indicating irregular
\nnetwork performance. These particular\u00a0locations are further investigated to\u00a0determine whether the inefficiency is due to\u00a0fraudulent consumer connections or poor\u00a0performance of network components.
\nThe 4CCTI LV controller is connected\u00a0to the 5CTIs via a RS485 bus and provides\u00a0valuable information such as power\u00a0quality measurement, earth fault detection,\u00a0fault recording and a meter-to-feeder
\nmapping algorithm which gives updated LV\u00a0network topology information back to the\u00a0network operator.
\nThe solutions proposed in this article are based\u00a0on AMI technologies successfully deployed all\u00a0over Europe.<\/p>\n

ZIV is participating in many of the\u00a0major meter rollouts that are taking place in\u00a0Europe and is a reliable partner to make your\u00a0smart LV network a reality.<\/span><\/strong><\/p>\n

About ZIV\u00a0\u00a0LV supervision solutions<\/a><\/p>\n

 <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Editorial By Aitor Amezua, ZIV Distribution Automation BU Development Manager \u00a0For Metering International ISSUE 4-2017 Smart electricity meters are a reality.\u00a0Smart meters combine different\u00a0technologies that range from current\/voltage measurements,\u00a0energy and power calculations \u2026 to the\u00a0integration of different telecommunication\u00a0interfaces (powerline, wireless or wired\u00a0communications). A good example of the application of different\u00a0telecommunication interfaces is the ESMR5\u00a0smart meter that ZIV is developing for […]<\/p>\n","protected":false},"author":1323,"featured_media":73993,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[94],"tags":[161],"class_list":["post-27337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias","tag-events-2-es"],"acf":[],"yoast_head":"\nMetering \u2013 Beyond AMI: Low Voltage Grid Operation - ZIV<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.zivautomation.com\/es\/news-and-events\/noticias\/editorial_beyond_ami\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Metering \u2013 Beyond AMI: Low Voltage Grid Operation - ZIV\" \/>\n<meta property=\"og:description\" content=\"Editorial By Aitor Amezua, ZIV Distribution Automation BU Development Manager \u00a0For Metering International ISSUE 4-2017 Smart electricity meters are a reality.\u00a0Smart meters combine different\u00a0technologies that range from current\/voltage measurements,\u00a0energy and power calculations \u2026 to the\u00a0integration of different telecommunication\u00a0interfaces (powerline, wireless or wired\u00a0communications). 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