Design method of light-weight direct-current power transmission system controller based on active disturbance rejection control

A light direct current transmission and system controller technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve problems such as oscillation, closed-loop system slowness, and large initial errors, and achieve high control accuracy, easy parameters, and algorithms simple effect
CN105406502AInactive Publication Date: 2016-03-16ANHUI HUADIAN ENG CONSULTATING & DESIGN
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI HUADIAN ENG CONSULTATING & DESIGN
Publication Date
2016-03-16
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a design method of a light-weight direct-current power transmission system controller based on active disturbance rejection control. The method comprises the following steps that: a transient mathematics model is established under a synchronous rotating reference frame in conjunction with a working principle of a light-weight direct-current power transmission system; a direct-current voltage controller based on an active disturbance rejection control technology can control a voltage stabilizer on a direct-current side of a current transducer and reactive power balance on an alternating-current side, adopts double-ring control of an inner ring and an outer ring, stabilizes a voltage of a direct-current system, and keeps unit power factor running of an alternating-current system; and power controllers based on the active disturbance rejection control technology consist of outer ring power control and inner ring current control, and can realize unit power factor running of the alternating-current system and ensure running of a system load flow according to a scheduling set value. The design method is a novel control method provided in ways of learning from the advantages of proportion integration differentiation (PID) control, referring to variable-structure control and avoiding the phenomenon of chattering in the variable-structure control. The design method has the advantages of simple algorithm, high control accuracy, high stability, easiness in parameter debugging, low dependence on a system mathematics model, and the like.
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Description

Technical field:

[0001] The invention relates to the technical field of power transmission system controllers, in particular to a design method for a light direct current transmission system controller based on active disturbance rejection control technology. Background technique:

[0002] In the DC transmission system, according to the different types of converter devices, it can be divided into current source converters and voltage source converters. Currently, most of the existing DC transmission projects use current source converters. With the development of power electronics technology, the technology of voltage source-based converters emerges as the times require, and has become one of the hotspots in the research of light direct current transmission.

[0003] The converter stations at both ends of the light direct current transmission system are connected by a direct current transmission line, and the two converters operate in the rectification state and the inverter ...

Claims

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