Power electronic equipment control initialization method

An initialization method and equipment control technology, applied in the direction of power transmission AC network, electrical components, circuit devices, etc., can solve the problems of unpredictability, different electrical quantities, and increase the difficulty of control start-up, so as to achieve wide application, reduce circuit impact, Improve the effect of rapidity and stability

Active Publication Date: 2020-12-15
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

At the same time, since the initial value of the integrator is unknown before the start of the control strategy for power electronic equipment, it will cause unpredictable problems, so the output value of the integrator needs to be reset to zero
However, clearing the initial value of the integrator is one of the reasons for the circuit shock during the control sta

Method used

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  • Power electronic equipment control initialization method
  • Power electronic equipment control initialization method
  • Power electronic equipment control initialization method

Examples

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Example Embodiment

[0040] Example 1:

[0041] see figure 1 , figure 2 As shown, the power electronic equipment control initialization method provided in this example includes the following steps:

[0042] (1) Before the target control strategy is started, the state is obtained from the measured electrical quantities of the actual system, and the real-time electrical quantity data related to the control part is collected. Through the real-time electrical quantity data, the setting value information required by the control loop is obtained. It should be noted that the real-time electrical quantity data is the electrical quantity necessary for the original control, and there is no need to add a new measurement interface, and the system collects the actual electrical quantity value at all times. The setting value information required by the control loop, including the control target reference value and the setting value of the integrator;

[0043] (2) According to the setting value information ...

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Abstract

The invention provides a power electronic equipment control initialization method, which comprises the following steps of: (1) before a target control strategy is started, measuring electrical quantity from an actual system to obtain a state, and collecting real-time electrical quantity data to obtain setting value information required by a control loop; (2) realizing integrator initial value setting in the control loop according to setting value information required by the control loop in the step (1), and locking an integrator initial value before starting control; and (3) setting a target control strategy reference value as the electrical quantity measurement value obtained in the step (1), sending a control starting signal to modulation and valve group control by the control system, and starting a control strategy. When the control strategy is initialized, the circuit impact is reduced by setting the initial value of the integrator in the control system and the control target reference value, the rapidity and stability of power electronic equipment control in starting are improved, more application scenes are provided for the power electronic equipment, and the method can be widely applied to the field of power electronics.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and relates to a control initialization method for power electronics equipment. Background technique [0002] With the development of power electronic technology, power electronic equipment such as VSC-HVDC (high voltage direct current transmission technology based on voltage source converter), DFIG (double-fed induction motor), SVC (static var compensator), STATCOM (static Synchronous compensator), etc., have been widely used in power systems. In the control strategies of these power electronic devices, integrators are usually used in the control loop. The zero-error control is realized in different control strategies through the integrator, and different control objectives are achieved. During the start-up of equipment valve control, or in the process of switching control strategies, etc., if the control strategy is started with the same settings as normal operation, a large impact ...

Claims

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Application Information

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IPC IPC(8): H02J3/36H02J3/38H02M1/36
CPCH02J3/36H02J3/381H02M1/36H02J2203/20H02J2300/28Y02E60/60
Inventor 李周詹若培
Owner SOUTHEAST UNIV
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