Volume 51, November 2015, Pages 1578–1593 Protection of AC and DC distribution systems Embedding distributed energy resources: A comparative review and analysisa b c d Received 1 September 2014, Revised 2 May 2015, Accepted 8 July 2015, Available online 1 August 2015The integration of distributed generation (DG) units into distribution networks has challenged the operating principles of traditional AC distribution systems, and also motivated the development of emerging DC systems. Of particular concern are the challenges associated with the operation of conventional protection schemes and/or devices. This paper first analyses the fault current characteristics in AC and DC distribution systems; it then presents a comprehensive review of the latest protection methods proposed for distribution systems embedding DGs. In addition, the advantages and disadvantages of each method are outlined and compared. The differences between the protection algorithms employed in/proposed for AC and DC systems are also discussed.

Finally, this study identifies the future trends and provides recommendation for researches in the field of protections of DC distribution networks.Keywords; ; ; ; Copyright © 2015 Elsevier Ltd. Air Conditioners can be protected from theft, hurricanes and vandelism with our AC protection cages. We manufacture and stock two types of A/C Security Cages. View the links below to see specification sheets of the A/C Cages. Both extended and plated posts are included with every purchase.build cover for ac unit If you have any questions, or to place an order please give us a call at 972-564-3388.cost of cleaning ac unit Protect your comfort all year longhome ac parts in arizona Furnaces or boilers, air-conditioning units or heat pumps, even water heaters all work hard to keep your home comfortable.

Systems that cycle on and off repetitively can have a tendency to fail over time through normal wear and tear. Protect yourself from the potential headache that comes with paying for HVAC repairs with our HVAC Systems Protection plan, and keep your home comfortable. Furnaces, Heat Pumps, & Boilers When your home needs heat, your heating system moves massive amounts of air around to accomplish the task. Intense heat and moving parts can cause wear and tear to your heating system. Our HVAC Systems Protection plan can help with the costs necessary to repair a failed system, or credit you toward the cost of a new system to ensure your home gets the heat it needs when you need it. We may only use our home’s heating system for a portion of the year, but if it’s not working, it’s noticeable. Heating systems push an incredible amount of air through a home’s ducts when they are running. This puts a significant amount of stress on the fans, heating elements, and circuits involved.

By enrolling in our HVAC Systems Protection, system stress doesn’t have to make you anxious. Just call us when there’s an issue and we will send our local, licensed contractor to the rescue. With our service, these common heater issues are protected: Blower motors or blower-assembly failure Keeping your cool when your air-conditioning unit is on the fritz can be difficult. Relax and let us handle the repairs. With our HVAC Systems Protection plan, we lessen the burden of the repair costs, or we’ll credit you to replace your failed unit, up to your coverage amount, in the event that your AC unit is not able to be repaired. There’s nothing like the intense heat of the summer to make you appreciate living with the convenience of air conditioning. But removing the heat from a home takes work, and that work can potentially cause wear and tear to your central air-conditioning unit. When the inevitable happens, you’ll want to have our HVAC Systems Protection in place.

That way, you can keep your cool and call us to handle your covered repairs. Or, if the repair isn’t enough, we will reimburse the coverage amount toward a replacement. Here are some common Air-Conditioning issues we handle: Keeping several gallons of water at ready temperature for use can eventually cause the tanks that hold the water to crack and leak. Along with causing the discomfort of cold water, a leak can be dangerous if left unattended. If you have an issue with your tank under our HVAC Systems Protection plan, you only need to call us. We will get a trusted, local contractor to your home, pay for the covered repair, and guarantee that repair for a full year. Drawing a nice warm bath, washing your whites, and removing last night’s dinner off the plates all take hot water; and the heating of that water takes work. Over time, the repeated heating and reheating of 50+ gallons of water at a time can potentially cause the water heater tank to crack, connections to corrode, and even wear out delicate components.

This wear-and-tear would be a concern if it weren’t for your HVAC Systems Protection plan. But with IGS Energy Home Protection, the only thing you need to do when your water heater wears out is to give us a call. Below are some of the items we cover with your water heater: Compromised temperature & pressure-relief valve Our HVAC Systems Protection plan will protect your budget from the potentially high cost of repairing or replacing any of your HVAC systems. Furnace, heat pump, boiler, air conditioners, and water heaters are all under this protection for a low monthly price. Keep your comfort for just a fraction of the cost of even one service call. Up to $8,000 in protection Learn More Up to $26,500 in protection Learn More Up to $8,000 in protection Enroll Now Up to $34,500 in protection Learn More Most of our protection limits reset every 90 days! We get the technician to your door so you can get back to what’s important! Work performed by local technicians is guaranteed for 12 months!

Account can be canceled at any time with no fee! 3 simple steps to making a claim Meet with a licensed contractor Get back to what really matters There are other home protection programs out there, but with any service you end up using, there are things you’ll want to look for. Use this handy buying guide as a reference as you’re pricing out plans to fit your budget and lifestyle. What is Home Protection? A home operates through its pipes, wires, and mechanical components, similar to the way your car or van operates. These hard-working items can be prone to leak or fail through their daily use. Home protection (or in some cases referred to as home warranty) services are plans that help cover the expense of repairs or the replacement to a home’s critical lines and major components. Home protection plans often provide considerable coverage for a nominal, monthly fee. The Home Protection plans, available through IGS Energy Home Services, include a wide range of protection options that work with your lifestyle.

All plans include a 12-month guarantee on any covered repair. The HVAC Systems protection plan: Covers repairs to your furnace, AC unit, and water heater, or boiler Can be ideal for any HVAC system over 10 years old Takes into account replacement of systems when necessary Protection for up to $8,000 What is an HVAC System? HVAC stands for Heat, Ventilation, and Air Conditioning and refers to a home’s heating and cooling systems. Depending on your home, you might have a boiler, heat pump, or traditional furnace as your primary heating device. Typically tied into these heating systems, is a central air-conditioning unit. With some HVAC protection plans, your home’s primary water heater might also be included as a covered heating system. Rule of Thumb: Window AC units, and secondary heaters or cooling systems are not considered part of a home’s HVAC system and are not typically included in most HVAC protection plans. What is really being protected?

From the front door to the back, wear and tear can impact anything in a home over time. Protection plans may not prevent the lines or systems in your home from failing, but they can help protect your peace of mind and safeguard your budget from the potentially expensive costs associated with most repairs or replacements to those lines and systems. When it comes to HVAC Systems, here are some common examples of items that need to be repaired: Furnace, Boiler, or Heat Pump Compromised temperature & pressure relief valve What if my HVAC systems are all electric? Electric heating components like electric furnaces and electric water heaters operate by putting electrical resistance through a dense metal filament or rod—similar to a toaster or electric oven. This often creates a limited system lifespan. For instance, over time, repeated heating can cause any rod connections, wire coatings, or even the filament itself to be compromised. IGS Energy Home Services offers combined protection to all three areas of your home in one, complete plan;

providing you with comprehensive coverage so you can “set it and forget it”. Is this protection really worth it? This question is best answered by asking yourself: “What am I willing to pay when something breaks in my home?” For example, enrolling in IGS Energy Home Services’ HVAC Systems protection plan is like having $8,000 set aside for a repair. But, your annual out-of-pocket for this plan is less than $200. , the majority of Americans do not have enough funds in their savings account to cover even a $500.00 service call. The utility line failures that home protection plans typically cover are a very real—and potentially devastating— possibility of owning a home. By purchasing any home protection product, you are making an investment in safeguarding your finances. View other Frequently Asked Questions All images are for illustration purpose only and do not guarantee protection. Please refer to the corresponding service agreement for scope or contact us for more information.