Power Regulation

Power Regulation


(also, close regulation), automatic regulation of excitation or rotational speed in synchronous generators or compensators according to deviations in voltage or frequency or according to the first and second derivatives of the rotor and stator current, voltage, or other operating parameters of a power system. Close regulation makes it possible to predict and prevent incipient changes in operating conditions.

Close regulation is achieved by using automatic power regulators. Such regulators feature rapid and high response to an excitation current or to the admission of an energy carrier, such as steam or water, into a turbine or hydraulic generator whenever a change in operating conditions occurs. Examples of such changes include an increase or decrease in the power being transmitted or short circuits. The purpose of close regulation is to maintain the required voltage at some given point in the adjoining section of a power grid and to prevent a breakdown in the parallel operation of power plants connected to the power system. Such breakdowns may involve static, dynamic, or overall stability.

Automatic close regulators of excitation are manufactured according to a standardized design. Such regulators are installed in a number of generators at hydroelectric power plants, including those at Bratsk and Krasnoiarsk. They are also used in the high-power generators of thermal and nuclear power plants. The turbine generators of the Slaviansk and Kostroma state regional electric power plants are also equipped with automatic close regulators of rotational speed. When combined with fast-response thyristor exciters of synchronous machines, automatic close regulators substantially improve the quality of electric power supply and increase the operational reliability of the Integrated Electric Power Grid of the USSR.


References in periodicals archive ?
The regulator supports direct purchase of electricity according to its power regulation act 2015.
Babar said that Action in Aid of Civil Power regulation was promulgated in 2011 and given back-dated effect from 2008 to enable the agencies to present before the court those held in custody without trial without fear of prosecution.
He said the Action in Aid of Civil Power Regulation promulgated in 2011 was given a back dated effect from 2008 to enable law enforcing agencies to bring into open those caught during the fight against militancy in Swat and Malakand and to hold open trial while protecting the agencies from prosecution.
It adds that the transistor technology also delivers dynamic and precise power regulation that boosts energy efficiency by up to 30%, reducing the total cost of ownership of airfield ground lighting still further.
The Chairman National Electric Power Regulation Authority (NEPRA) said the bills were not shared with the authority and it had reservations on them.
Similarly the provision of safe houses and the Action in Aid of Civil Power Regulation had created built in structures for concealing torture on suspects and needed to be revisited, he said.
Features include hardware startup and continuous runtime testing with failsafe shutdown, internal raw data streams available for testing, redundant generators for highest reliability, and independent power regulation for generator circuits.
The senate committee on human rights that met today in the senate secretariat under the chairpersonship of senator Nasreen jalil to take up a host of issues which besides the NCHR included the Hindu Marriage Bill, the Child Protection Bill, the Action in Aid of Civil Power Regulation and a public petition of a private citizen whose son went missing in Dubai over two years ago under mysterious circumstances.
The unit consists of a 60-W folding PV blanket for power generation, a junction box that contains the maximum peak power tracking circuitry (MPPT), a charge controller for the lithium battery system, a lithium battery with battery management system, a high-power (55-W) power regulation circuit for 19- to 28-V selected voltage and two USB charging circuits.
com)-- Future Electronics, a global leading distributor of electronic components, offers the FAN53525 Series from Fairchild, for power regulation, conversion and management.
Otherwise, we will soon have the EPA unilaterally creating a cap-and-trade regime that will make its administrator czar of all power regulation in every state.

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