Method and framework for defending security of power system with stability controlled by direct-current system
A technology of power system and DC system, which is applied in the direction of electrical components, emergency protection circuit devices, etc., can solve problems such as incompleteness and unclear positioning of DC additional control, and achieve the effect of overcoming unclear positioning
Active Publication Date: 2015-05-13
CHINA ELECTRIC POWER RES INST +1
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[0004] The invention provides a power system security defense method and framework in which the DC system participates in stable control, determines the function and location of the DC additional control in the power system security defense system, and overcomes the original power system security defense system's direct current additional control Unclear and incomplete issues
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[0016] The following is a preferred implementation example of the present invention, and the technical solutions realized by the present invention will be further described below in conjunction with the accompanying drawings of the present invention.
[0017] Taking my country’s Sichuan-Chongqing Power Grid Southwest Hydropower AC / DC hybrid transmission system as the object, the use of DC frequency modulation function can reduce the number of generators removed after the transmission system encounters a fault disturbance, and achieve the control of the power system's second line of defense. effect.
[0018] It should be stated that the content and specific implementations of the present invention are intended to prove the practical application of the technical solutions provided by the present invention and should not be interpreted as limiting the protection scope of the present invention. Those skilled in the art can make various modifications, equivalent substitutions, or improve...
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The invention provides a method and a framework for defending the security with stability controlled by a direct-current system. The method and framework can be used for identifying the functions and location of the direct-current additional control functions, such as direct-current idle modulation, direct-current power modulation, direct-current frequency modulation, direct-current power emergency control, direct-current frequency limitation control, direct-current subsynchronous oscillation damping control and the like of the direct-current system in a power system security defensive system. By utilizing the method and framework provided by the invention, the problem of uncertain and incomplete positioning on the direct-current additional control by the original power system security defensive system can be overcome.
Description
Technical field [0001] The invention belongs to the field of power system operation control, and in particular relates to a power system security defense method and framework in which a DC system participates in stability control. Background technique [0002] In order to ensure the safe and stable operation of the power system, China has built a power system security defense system, which contains three lines of defense. The "Technical Guidelines for Power System Security and Stability Control" (GB / T 26399-2011) defines the three lines of defense as follows : The first line of defense is to maintain its sufficiency and safety (sufficient stability margin) through preventive control under the normal state of the power system. When a short-circuit fault occurs, the inherent control equipment and relay protection device of the power system will quickly and Correctly cut off the faulty components of the power system; the second line of defense, according to the pre-considered failur...
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IPC IPC(8): H02H7/26
Inventor 郭小江马世英
Owner CHINA ELECTRIC POWER RES INST