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.

N. I. OVCHARENKO

References in periodicals archive ?
PHC bench comprising Chief Justice Waqar Ahmad Seth and Justice Abdul Shakoor heard the petition on action in civil power regulation on Wednesday.
It is worth mentioning here that the entire laws and regulations including FCR, FIGR, In-aid of Civil Power Regulation 2011 and others were withheld in article 247 of Constitution (twenty-fifth Amendments) Act, 2018 however, for enactment of laws in merged districts all the rules were restored except FCR and FIGR.
As a central link between physical processing and digital laser control, the CU190 translates trajectory data into adjustment signals for real-time laser power regulation.
He said if passed into law, the bill would mark a milestone in electric power regulation in the country.
Despite the directions of the National Electric Power Regulation Authority (NEPRA) in 2016, K-Electric had failed in installing time of use (ToU) meters for power consumers which enable them to consume power economically and reduce their billings.
He said the military courts must also be opposed for another reason as internment centres were set up in Khyber Pakhtunkhwa (KP) and Federally Administered Tribal Areas (Fata) under 'Action in Aid of Civil Power Regulation 2011'.
Islamabad -- For mainstreaming FATA and its merger the provincial Assembly of KP must suitably amend the 'Interim System of FATA Administration Regulation 2018' as well as 'Action in Aid of Civil Power Regulation 2011' and extend the Local government law of the province to the tribal areas forthwith.
The laser also has a double power regulation that enables the operator to precisely set the power from pulse to pulse.
The letter said that the Action in Aid of Civil Power Regulation, also enforced under Article 247, would lose its legal cover as a result and all actions taken under the aforementioned regulation would become illegal.
If the regulation ability of an air-conditioning load can be used, though increasing air-conditioning power to consume the excessive PV power, it will be able to make up for the inadequacy of photovoltaic reactive power regulation ability and at the same time reduce the waste of PV power and the investment of energy storage and reactive compensation equipment, which provides a new method to solve the problem of voltage off-limit.
Super-twisting algorithm, called higher-order sliding mode of the second order, has been adopted to achieve maximum wind power tracking and reactive power regulation [14-19].
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.

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