FLISR centralizado versus descentralizado: ¿cuál es el adecuado para su red?

La localización de fallos, el aislamiento y la restauración de servicios (FLISR) es una aplicación de software que redirige las potencias en caso de fallo para restablecer la alimentación eléctrica al mayor número posible de clientes, tan pronto como sea posible. Los tiempos de restauración del servicio varían desde menos de un segundo hasta segundos, dependiendo del tipo de solución FLISR utilizada.

Existen dos categorías principales de FLISR: descentralizada y centralizada:

FLISR Descentralizado FLISR Centralizado Survalent
  • Descentralizado – Una solución programada que ejecuta actividades predefinidas y programadas para re-energizar los alimentadores utilizando la energía de alimentadores adyacentes
  • Requiere la creación de scripts para todas las configuraciones de red posibles
  • Difícil de escalar a grandes redes porque el número de escenarios de restauración aumenta exponencialmente con cada dispositivo adicional
  • Ideal para alimentadores con cargas críticas que requieren una restauración en menos de un segundo, como los hospitales.
  • Centralizado – Una solución basada en modelos que utiliza datos en tiempo real de la red para identificar la mejor reconfiguración de la red, aislar el área con fallas y restaurar la energía a los clientes fuera del área con fallas
  • No es necesario definir un estado “normal”. FLISR basará su análisis en el estado actual de la red eliminando la necesidad de escribir un script para cada estado posible.
  • Antes de transferir la carga a un alimentador adyacente, la solución analiza que el alimentador tiene suficiente capacidad para evitar sobrecargarlo.
  • Muy escalable, por lo que es ideal para cualquier tamaño de red, desde pequeña hasta grande.

Debido al gasto y la complejidad de mantener scripts para cada escenario posible, el FLISR centralizado (basado en modelos) es típicamente la solución ideal cuando se desea configurar FLISR en más de 10 dispositivos en su red. Al poder adaptarse a cualquier configuración de red, las soluciones centralizadas como SurvalentONE FLISR pueden ayudar a evitar las interrupciones generalizadas y sostenidas que causan indignación a los clientes, aparecen en los titulares de los periódicos y dan lugar a consultas públicas de alto perfil.

Eso no significa que tengas que elegir uno u otro.  Las soluciones avanzadas basadas en modelos como SurvalentONE FLISR le permiten tener lo mejor de ambos mundos. Puede configurar FLISR descentralizado en áreas donde los tiempos de restauración son críticos y, para el resto de la red, aprovechar la escalabilidad de una solución centralizada para convertir una interrupción sostenida en una interrupción momentánea para los clientes que se encuentran fuera del área de la avería. Conozca más sobre FLISR y sus beneficios en ¿Puede un apagón de 2 horas durar sólo 20 segundos? Puedes apostar a que sí.

¿Puede un apagón de 2 horas durar sólo 20 segundos? Puedes apostar a que sí.

Esa es la magia de una red que se auto repara. Gracias a los avances en la automatización de la distribución, lo que normalmente sería una interrupción sostenida ahora puede ser sólo un parpadeo de las luces.

El secreto está en desplegar aplicaciones de Localización de Fallas, Aislamiento y Restauración de Servicios (FLISR) y Pérdida de Voltaje (LOV) en su red de distribución. Con FLISR y LOV, las empresas de servicios públicos pueden redirigir automáticamente la energía alrededor de una falla para restaurar la energía a la mayoría de los clientes afectados en cuestión de segundos.  Es tan rápido que es posible que los clientes ni siquiera tengan tiempo de llegar al teléfono para reportar el apagón antes de que la energía vuelva a estar encendida.

Esa es la diferencia.

Cuando se producen fallos y se corta la corriente, cada segundo cuenta. Incluso el cliente residencial más paciente está ansioso por volver a su programa de televisión, cargar su teléfono y preparar la cena…. esencialmente para volver a encarrilar su día.

Y luego están los clientes comerciales, que son aún menos indulgentes con los apagones. La pérdida de energía es pérdida de ingresos. El 98% de las organizaciones encuestadas por el ITIC informó de pérdidas de más de 100.000 dólares por una sola hora de inactividad y el 81% informó de pérdidas de más de 300.000 dólares. Es innecesario decir que los clientes comerciales no quieren nada más que poner en marcha sus máquinas, que sus trabajadores vuelvan a sus labores y que sus calendarios de producción vuelvan a estar a punto.

Por lo tanto, necesita maximizar el tiempo de actividad para mantener a sus clientes satisfechos. Ya que no puede controlar las tormentas, accidentes y animales que causan la mayoría de las fallas, la siguiente mejor opción es minimizar su impacto y duración.

¿Cómo funcionan FLISR y LOV?

SurvalentONE FLISR se activa cuando un dispositivo se bloquea. En el modo automático (el modo más rápido) aísla el área con fallas y redirecciona automáticamente la energía para restaurar a los clientes aguas arriba y aguas abajo del área aislada. Para prevenir más fallas, FLISR determina que los alimentadores adyacentes tienen suficiente capacidad para recoger la carga antes de transferirla. En modo semiautomático, la aplicación FLISR crea un orden de conmutación que aísla la falla y proporciona restauración de servicio alrededor del área aislada. Un operador debe aprobar y ejecutar la orden de conmutación. Algunas empresas de servicios públicos utilizan el modo semiautomático para ayudar a sus operadores a ganar comodidad y confianza en las acciones de FLISR y LOV antes de cambiar a una solución totalmente automatizada.

SurvalentONE LOV monitorea la red en busca de caídas repentinas de voltaje en la subestación. El LOV se activa cuando el alimentador parece estar energizado, pero la tensión cae por debajo de un umbral predefinido. Aísla automáticamente la pérdida de suministro, determina que los alimentadores adyacentes tienen suficiente capacidad para recoger la carga y transfiere energía para restaurar a los clientes aguas abajo del área aislada.

¿Qué significa eso para ti?

Con FLISR y LOV en su red, usted puede aumentar dramáticamente el tiempo de actividad:

  • Mejorar la disponibilidad de energía y los índices de confiabilidad
  • Atraer y retener clientes comerciales e industriales
  • Aumentar los ingresos y reducir los costes operativos
  • Cumplir con los estándares regulatorios para el tiempo de actividad

Para saber más sobre SurvalentONE FLISR y LOV, haga

 

5 Razones por las que necesita un entorno de desarrollo fuera de línea

¿Sabía que el error humano es responsable del 70% de la pérdida de datos? Esta es una estadística particularmente preocupante para la industria de servicios públicos, cuando los administradores importan datos de otros sistemas y actualizan la base de datos y los gráficos diariamente. Afortunadamente, puede mitigar e incluso eliminar el riesgo de error del usuario y de sobreescritura de datos con un sistema de desarrollo fuera de línea.

Aquí hay 5 maneras en las que un sistema de desarrollo fuera de línea puede ayudar a su empresa de servicios públicos:

 

1. Es una red de seguridad para su sistema, sus activos y sus administradores.

Desde abrir accidentalmente un interruptor hasta importar errores de su SIG, la actualización de su sistema en vivo puede introducir errores que conducen a interrupciones momentáneas o sostenidas. Con un sistema de desarrollo fuera de línea, puede mantener operaciones ininterrumpidas mientras realiza cambios y los prueba antes de ponerlos en marcha. Esto le ayuda a proteger sus activos de daños, mejorar las métricas de rendimiento clave de la empresa de servicios públicos y reducir el estrés de realizar cambios no probados y no revisados en el sistema activo.

 

2. Puede poner al día a los nuevos administradores de forma rápida y segura

Con una copia offline de su entorno real, puede formar a los nuevos administradores más rápidamente, reducir la curva de aprendizaje y tener confianza en su comprensión de la red. Puede mejorar la seguridad de sus empleados y del público y permitir que sus nuevos administradores trabajen con confianza desde su primer día en el sistema activo.

 

3. Más tiempo de actividad = clientes más satisfechos

Cualquier oportunidad de prevenir un apagón es una oportunidad para mantener a sus clientes de su lado. Nunca descarte el poder de los clientes descontentos – los consumidores de hoy en día tienen una baja tolerancia a los apagones y no tienen miedo de transmitir su insatisfacción a través de los medios de comunicación social. Un entorno fuera de línea puede ayudarle a evitar las interrupciones evitables causadas por errores y a mantener sus indicadores clave de rendimiento (KPI) altos.

 

4. Mantenga un registro de los cambios en el sistema

Con un sistema de desarrollo de proyectos fuera de línea que incluye capacidades de auditoría y registro, usted puede estar al tanto de quién está haciendo cambios en su sistema y cuáles son esos cambios. Esto incluye la capacidad de rastrear y documentar los errores que se corrigieron en los datos importados y la aprobación de los cambios en su base de datos y gráficos antes de que se publicaran en su sistema de producción en vivo.

 

5. Aumente la eficiencia para ahorrar dinero

Una de las formas más fiables de ahorrar dinero es mejorar la eficiencia operativa. Con un sistema de verificaciones y balances habilitado por un sistema de desarrollo fuera de línea, usted puede eliminar la pérdida de ingresos por interrupciones causadas por errores, así como el costo de los salarios por horas extras para corregir esos errores. En su lugar, usted puede enfocar sus recursos donde sean más efectivos. Los ahorros se acumulan rápidamente.

Para obtener más información sobre el Sistema de Desarrollo de Proyectos de Survalent, haga

 

Three Ways Mobile Crew Improves your Outage Management System

For utilities, an Outage Management System (OMS) is an important application for managing outages effectively. OMS, when integrated with SCADA and the customer service centre, can help you better coordinate outage response activities, resolve outages faster, and increase transparency to customers. But there remains a missing link: an integrated two-way flow of information between the control room and field crews.

A steady stream of information is crucial for making timely, informed decisions and optimizing field crew deployments. When jobs and information are shared over the radio, there is always the risk of delays and misunderstanding. Crew in the field are forced to describe situations they hope the control centre can understand, and vice versa. Eliminating these inefficiencies can help restore power faster.

Survalent Mobile Crew

Survalent Mobile Crew enables field crews to receive job notifications, view jobs, view the network model and outage map in real-time, create damage reports, report progress, and close job tickets, all through their laptop or tablet.

Collaboration between dispatchers and field crews equipped with Mobile Crew enables utilities to streamline field operations, improve situational awareness, and ensure a safe, coordinated response to every outage.

So how does Mobile Crew improve your OMS?

1. Get started on restoration activities more quickly and resolve outages faster

When dispatchers create a job, the field crew has access to its precise location. The job record displays the relevant details, so the crew can be better prepared with the information and materials they need before they get to the site. Crews can also see which other crews are nearby so they can contact them in the event they need materials, rather than going back to the shop to pick them up. As a result, crews can eliminate extra time spent searching for the job site or retrieving materials and can cut down on mileage and unnecessary truck rolls.

2. Empower field crew to tackle outages when the control room is closed

Not all utilities have a 24/7 control room. With Mobile Crew, utilities can configure user rights so that an on-call supervisor can create job tickets and dispatch the crews directly from the field. Utilities can also enable field crews to assign themselves to an outage case so there are no delays.

3. Improve field crew and customer safety

With Mobile Crew, workers in the field have access to the same information as the control room, including information about which feeders are energized or de-energized. They can also view tags on devices under repair. As a result, the field crew can be confident in their safety when starting a job. Plus, a more collaborative environment is a safer environment. When crews working on the same feeder can see what the others are doing, there’s less chance of an upstream crew energizing a line currently being restored by unprotected linemen.

Interested in learning more?

Centralized versus decentralized FLISR – what’s right for your network?

Fault location, isolation, and service restoration (FLISR) is a software application that reroutes powers in the event of a fault to restore power to as many customers as possible, as quickly as possible. Service restoration times range from sub-second to seconds depending on the type of FLISR solution used.

There are two main categories of FLISR – decentralized and centralized:

Decentralized FLISR Survalent’s Centralized FLISR
  • Decentralized – A scripted solution that executes pre-defined, programmed activities to re-energize feeders using power from adjacent feeders
  • Requires script creation for every possible network configuration
  • Difficult to scale to large grids because the number of restoration scenarios increases exponentially with each additional device
  • Best suited for feeders with critical loads that require sub-second restoration, such as hospitals
  • May prove to be laborious to maintain long term
  • Centralized – A model-based solution that uses real-time data from the network to identify the best network reconfiguration, isolate the faulted area, and restore power to customers outside the faulted area
  • No need to define a “normal” state. FLISR will base its analysis on the current state of the network eliminating the need to write a script for each possible state
  • Before transferring load to an adjacent feeder, the solution analyzes that the feeder has sufficient capacity to avoid overloading it
  • Vastly scalable, so ideal for any size of network, small to large

Due to the expense and complexity of maintaining scripts for every possible scenario, centralized (model-based) FLISR is typically the ideal solution when you want to set up FLISR on more than 10 devices in your network. By being able to adapt to any network configuration, centralized solutions like SurvalentONE FLISR can help avoid the widespread, sustained outages that cause customer outrage, make newspaper headlines, and result in high profile public inquiries.

That doesn’t mean you have to choose one or the other.  Advanced model-based solutions like SurvalentONE FLISR let you have the best of both worlds. You can set up decentralized FLISR in areas where restoration times are critical and, for the rest of your network, take advantage of the scalability of a centralized solution to turn a sustained outage into a momentary outage for customers outside the faulted area. Learn more about FLISR and its benefits in Can a 2-hour outage last just 20 seconds? You bet it can.

Can a 2-hour outage last just 20 seconds? You bet it can.

That’s the magic of a self-healing grid. Thanks to advancements in distribution automation, what would normally be a sustained outage can now be just a flicker of the lights.

The secret is deploying Fault Location, Isolation, and Service Restoration (FLISR) and Loss of Voltage (LOV) applications on your distribution network. With FLISR and LOV, utilities can automatically reroute power around a fault to restore power to the majority of affected customers in just seconds.  It’s so fast that customers might not even have time to get to the phone to report the outage before the power is back on.

That’s the difference maker.

When faults occur and the power goes out, every second counts. Even the most patient residential customer is anxious to get back to their TV show, charge their phone, and make dinner … essentially to get their day back on track.

And then there are commercial customers, who are even less forgiving of outages. Lost power is lost revenue. 98% of organizations surveyed by ITIC reported losses of more than $100,000 for a single hour of downtime and 81% reported losses of more than $300,000. Needless to say, commercial customers want nothing more than to get their machines up and running, their workers back on the job, and their production schedules back on target.

Therefore, you need to maximize uptime to keep your customers satisfied. Since you can’t control the storms, accidents, and animals that cause the majority of faults, the next best option is to minimize their impact and duration.

How does FLISR and LOV work?

SurvalentONE FLISR is triggered when a device locks out. In automatic mode (the fastest mode) it isolates the faulted area and automatically re-routes power to restore customers upstream and downstream of the isolated area. To prevent more faults, FLISR determines that adjacent feeders have enough capacity to pick up the load before transferring it. In semi-automatic mode, the FLISR application creates a switch order that isolates the fault and provides service restoration around the isolated area. An operator must approve and execute the switch order. Some utilities use semi-automatic mode to help their operators gain comfort and confidence in the actions of FLISR and LOV before switching to a fully automated solution.

SurvalentONE LOV monitors the network for sudden voltage drops at the substation. LOV is triggered when the feeder appears to be energized but the voltage drops below a pre-defined threshold. It automatically isolates the loss of supply, determines that adjacent feeders have enough capacity to pick up the load, and transfers power to restore customers downstream of the isolated area.

What does that mean for you?

With FLISR and LOV in your network, you can dramatically increase uptime to:

  • Improve power availability and reliability indices
  • Attract and retain commercial and industrial customers
  • Increase revenue and decrease operational costs
  • Comply with regulatory standards for uptime

To learn more about SurvalentONE FLISR and LOV, click here.

 

5 Reasons You Need an Offline Development Environment

Did you know that human error is responsible for 70% of all data loss? That’s a particularly disturbing statistic for the utility industry, when administrators import data from other systems and update the database and graphics on a daily basis. Luckily, you can mitigate and even eliminate the risk of user error and data overwrites with an offline development system.

Here are 5 ways an offline development system can help your utility:

1. It’s a safety net for your system, assets, and your administrators

From accidentally opening a breaker to importing errors from your GIS, updating your live system can introduce errors that lead to momentary or sustained outages. With an offline development system, you can maintain uninterrupted operations while making changes and test them before taking them live. This helps you protect your assets from damage, improve the key performance metrics of the utility, and reduce the stress of making untested and unreviewed changes to the live system.

2. You can quickly and safely bring new administrators up-to-speed

With an offline copy of your actual environment, you can train new administrators more quickly, reduce the learning curve, and be confident in their understanding of your network. You can improve the safety of your employees and the public and allow your new administrators to work confidently from their first day in the live system.

3. More uptime = happier customers

Any opportunity to prevent an outage is an opportunity to keep your customers on your side. Never discount the power of disgruntled customers — today’s consumers have a low tolerance for outages and they aren’t afraid to broadcast their dissatisfaction via social media. An offline environment can help you avoid preventable outages caused by errors and keep your KPIs high.

4. Keep a record of system changes

With an offline project development system that includes audit and journaling capabilities, you can stay on top of who’s making changes in your system and what those changes are. This includes the ability to track and document errors that were corrected in imported data and the approval of changes to your database and graphics before they were published to your live production system.

5. Increase efficiencies to save money

One of the most reliable ways to save money is to improve operational efficiencies. With a system of checks and balances enabled by an offline development system, you can eliminate lost revenue from outages caused by errors, as well as the cost of overtime wages to fix those errors. Instead, you can focus your resources where they’re most effective. The savings add up quickly.

To learn more about Survalent’s Project Development System, visit www.survalent.com.

Strata Solar Services Selects SurvalentONE SCADA to Monitor and Control Solar Plants

Integration of key sites will help Strata Solar Services meet time-sensitive service guarantees

BRAMPTON, ON April 3, 2019— Survalent Technology Corporation, a leading provider of advanced distribution management system (ADMS) software, today announced that Strata Solar Services has implemented SurvalentONE SCADA to provide centralized monitoring and control of NERC-regulated solar plants as well as those with time-sensitive service guarantees and megawatt thresholds. With SurvalentONE SCADA, Strata Solar Services will connect multiple plants into a single, integrated system that enables operators to efficiently monitor real-time telemetry data and control plant-level hardware, relays, and inverters.

Strata Solar develops, operates, and manages utility-scale, commercial and industrial solar photovoltaic systems. With more than 200 solar projects in operation across the U.S., Strata Solar is regularly ranked among the industry’s leading solar companies. The company’s Operations and Maintenance division—Strata Solar Services—manages the solar plants, providing real-time monitoring and control to optimize performance, maximize system output, and increase revenue. The team has experienced tremendous growth in the past two years, resulting in the need for an enterprise SCADA system that can pull data from geographically diverse locations into their new, NERC-compliant Network Operations Center.

“Before we implemented SurvalentONE SCADA, our operators went through a complex process to access each plant separately and look for data,” said Georgia Ditmore, Director of Operations for Strata Solar Services. “Our goal was to bring the data to them so they could efficiently monitor and control multiple plants within one system. Now, they can log in once to the Survalent platform and receive live data for all plants in an easily navigable platform.”

Strata Solar Services selected SurvalentONE SCADA because it offered the utility-specific functionality, flexibility, and scalability they wanted to dramatically increase the speed and simplicity of monitoring and controlling plants across a broad geography. Operators in the Network Operations Center can view real-time telemetry data and voltage trending charts, pull up images of local meters to check their status, monitor alarm feeds, and interact with breakers, inverters, and relays.

“The SurvalentONE platform is built for interoperability, which ensures that Strata Solar Services can quickly onboard new plants onto a centralized SCADA system,” said Steve Mueller, President and Chief Executive Officer of Survalent. “Our vendor-agnostic integration capabilities are a critical success factor for many of our customers as we allow the control center to share data and execute activities without replacing their existing infrastructure.”

About Strata Solar

Strata Solar is a leading provider of utility-scale, commercial and industrial solar photovoltaic systems. Strata Solar has constructed over 1 gigawatt (GW) in total solar capacity and maintains a development pipeline of over 3GW. The company’s integrated approach, which includes development, financing, engineering, procurement, construction, storage, operations and maintenance, allows Strata Solar to consistently build quality projects with long-term ownership in mind. Strata Solar is consistently ranked as one of the largest utility-scale solar integrators in the U.S. To learn more, visit stratasolar.com.

About Survalent

Survalent is the most trusted provider of advanced distribution management systems (ADMS) for electric, gas, transit, and water/wastewater utilities across the globe. Over 600 customers in 30 countries rely on the SurvalentONE platform to effectively operate, monitor, analyze, restore, and optimize operations. By supporting critical utility operations with a fully integrated solution, our customers have significantly improved operational efficiencies, customer satisfaction and network reliability. The company’s comprehensive substation automation solution, StationCentral, delivers advanced control and monitoring for enhanced network performance and protection. To learn more, visit us at www.survalent.com. Follow us on Twitter @Survalent and LinkedIn.