Strategy for controlling matching of traditional unit and energy storage system in AGC system

A technology of traditional units and energy storage systems, which is applied in the field of control strategies in which traditional units and energy storage systems cooperate, can solve problems such as no energy storage system, and achieve the effects of improved control effects, low hardware environment requirements, and simple implementation methods.

Active Publication Date: 2013-12-11
TSINGHUA UNIV +1
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  • Application Information

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Problems solved by technology

From the investigation of the current domestic AGC control strategy, there is no application of a control str...

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  • Strategy for controlling matching of traditional unit and energy storage system in AGC system
  • Strategy for controlling matching of traditional unit and energy storage system in AGC system
  • Strategy for controlling matching of traditional unit and energy storage system in AGC system

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Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] figure 1 It is a schematic diagram of the control strategy for the cooperation of the traditional unit and the energy storage system in the AGC system of the embodiment of the present invention. As shown in the figure, the fluctuation of load and intermittent renewable energy will lead to the change of system frequency, and the data acquisition and monitoring control (Supervisory Control And Data Acquisition, SCADA) system obtains data such as system frequency and tie line exchange power from the power system , and provid...

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Abstract

The invention discloses a strategy for controlling matching of a traditional unit and an energy storage system in an AGC system. The strategy comprises the following steps: obtaining the frequency deviation and the call wire switching power deviation from a data acquisition and supervisory control system, and computing area control deviation; computing system adjustment required power according to the area control deviation; distributing the system adjustment required power to the traditional unit, and computing target output of the traditional unit; computing the largest adjustment capability of the traditional unit in the current AGC period; distributing remaining adjustment power to the energy storage system to be borne; checking and issuing a command, and finishing the current AGC period. The strategy is beneficial to rapidly restraining fluctuation of the frequency of an electric system and fluctuation of the call wire switching power, and can reduce the requirement of the electric system for the frequency modulation capacity, or improve the frequency modulation control effect under the situation that the frequency modulation capacity is changeless. The achieved method is simple, the operation amount is barely added, meanwhile, the requirement for the hardware environment of a control system is low, and larger changes for an existing AGC system is not required.

Description

technical field [0001] The invention belongs to the field of automatic generation control (Automatic Generation Control, AGC) of electric power system, and relates to a control strategy for the cooperation of a traditional unit and an energy storage system in an AGC system. Background technique [0002] The frequency of the power system is an important indicator of power quality. In order to maintain the safe and stable operation of the system and protect the power equipment, the system frequency needs to be maintained within a relatively stable range. my country's national standard GB / T15945-2008 stipulates that the allowable range of frequency deviation of large-scale power systems is within 4‰ of the frequency rating. As an important auxiliary service of the power system, frequency regulation is to mobilize the output of the unit to follow the short-term change of the load in time and ensure the frequency stability of the system. [0003] In recent years, under the backg...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/32
Inventor 张放谢旭胡泽春张晶宋永华施磊
Owner TSINGHUA UNIV
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