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Controlling method and controller for variable participation frequency of temperature control load

A temperature control load and frequency control technology, applied in household refrigeration equipment, reducing/preventing power oscillation, lighting and heating equipment, etc., can solve the problems of secondary disturbance of the system, ignoring the comfort of users' power use, etc., to improve frequency regulation ability, beneficial to energy conservation and emission reduction, and the effect of reducing dependence

Inactive Publication Date: 2013-06-26
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

At present, relevant research methods mainly emphasize the auxiliary effect of the demand side on the power grid while ignoring the comfort of the user's electric energy use; at the same time, a large amount of uncertainty generated by the control process can easily lead to secondary disturbances in the system

Method used

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  • Controlling method and controller for variable participation frequency of temperature control load
  • Controlling method and controller for variable participation frequency of temperature control load
  • Controlling method and controller for variable participation frequency of temperature control load

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Embodiment Construction

[0046] Taking a refrigerator with stable power consumption and strong participation as an example, the present invention aims to develop a variable participation frequency controller suitable for household temperature control loads, through the demand side decentralized control of variable participation in the controller strategy to control the start and stop of the refrigerator compressor, so as to participate in the frequency adjustment of the system. The controller does not need the support of the communication system, which effectively reduces the capacity demand of the system frequency control for the backup generator set and the energy storage device, and saves Invest accordingly. At the same time, while supporting the system frequency, the end user's energy comfort is fully considered, and the system "secondary disturbance" problem that is easy to occur in the traditional frequency control process is avoided.

[0047] 1 Hardware structure of frequency controller with va...

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Abstract

The invention belongs to the technical field of frequency control and relative technical field of demand side response in an intelligent power grid, aims at reducing capacity requirements on a spare generator unit and an energy storage device from system frequency control requirements, saves corresponding investment, and simultaneously avoids the problem about system 'secondary disturbance' prone to occurring during a conventional frequency controlling process. The technical scheme includes that a controlling method for variable participation frequency of temperature control load includes the steps of: (1) collecting current power grid frequency fmeas (advising a refrigerating chamber temperature Tc (n) for refrigerating equipment); (2) designing pf into a piecewise linear function in positive proportion to power grid frequency deviation; (3) calculating according to data of the step (1) and the step (2); (4) determining the next operation of a compressor of the refrigerating equipment according to the calculating result of the step (3); and (5), n=n+1, returning to the step (1) and starting the next cycle. The controlling method and a controller for the variable participation frequency of the temperature control load are mainly applied to manufacture of the refrigerating equipment.

Description

technical field [0001] The invention belongs to the related fields of frequency control technology and demand-side response technology in smart grids, and specifically relates to a frequency control method and a controller for temperature-controlled load variable participation degree. Background technique [0002] The power system needs to keep the supply and demand balance of electric energy in time and space at all times to maintain the frequency stability of the system. When there is a large power imbalance, the system frequency will deviate greatly, which will destroy the safe and stable operation of the power system. According to the size of the system frequency fluctuation and the real-time operation situation, measures such as adjusting the active power output of the generator, or even cutting off the machine and load are usually taken to maintain the frequency stability of the system. However, as the grid-connected proportion of intermittent renewable energy (wind f...

Claims

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Application Information

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IPC IPC(8): H02J3/24F25D29/00
Inventor 贾宏杰穆云飞戚艳
Owner TIANJIN UNIV
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