Summary This article proposes a combined scheme to reduce the substation demand with conservation voltage reduction (CVR) alongside intelligent photovoltaic (PV) inverter control functions. CVR maintains the power delivered to the customers in lower service voltage range (120‐114)V by not influencing electric devices' performance at the consumer premises. Since most of the loads are voltage‐dependent at the consumer side, proper voltage control can obtain substantial demand reduction and energy savings. In the proposed work, CVR is applied to both medium‐sized (IEEE‐123 node test feeder) and large‐sized (IEEE‐8500 node test feeder) unbalanced distribution feeders without PV and with intelligent PV inverter. In addition, the transient nature of PV output power is also examined during the movement of the clouds. The smart PV inverter utilizes various control functions (Volt‐VAr, Volt‐VAr [hysteresis], Volt‐Watt, and combi mode) to control the system's active and reactive power. Results reveal that operating CVR with intelligent PV inverter in the hysteresis Volt‐VAr mode helps achieve higher substation demand reduction than with only CVR operation. This combination reduces system losses and contributes to energy savings when better voltage regulation is provided. It also helps in maintaining the reliability and efficiency of the distribution network.

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In today's era we see almost all the families around us are owners of an automobile, and with the fact that any machine needs a proper maintenance strategy we have observed the strategies being used for the automobiles. Maintenance strategy being used in automotive industry is normally a reaction to mishap to the vehicle that results in reduction of lifetime of vehicle and also loss of money in life. Almost maximum families use cars as their primary choice of transportation, but not all can afford higher end cars with world class facilities, so we aim to make a device that continuously detects the functioning of the cars and provide details of it to the owners on their mobile application (at an affordable price). This will not only detect the conditions of the car but also highlight the parts that require maintenance and ensure safety of both the car and its owner. The details of the car will be provided in the efficient and effective manner with the help of data and bar graphs. At this stage we feel the need of proactive maintenance to keep the details of the car up to date with us. Cars needs effective and strategical maintenance as they have complex structure so to improve their performance their servicing needs to be done smartly and efficiently. Now our work of proactive maintenance uses the interfacing of the hardware and software using sensors and android application to give a daily report of the vehicle to its owner so that they can take care of their vehicles according to it. It helps in cost cutting and as well as hassle free maintenance.