Voltage sag detection method, device and equipment and storage medium
The invention discloses a voltage sag detection method and device, equipment and a storage medium. The method comprises the following steps: acquiring a d-axis component and a q-axis component of a three-phase power grid voltage in a rotating coordinate system according to an actual value of each ph...
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| creator | JIANG XINYU QIAO XIAOGANG WANG FEI SUN KAIFA YU DIANYUN MAO WANG TU SHAOHUANG |
| description | The invention discloses a voltage sag detection method and device, equipment and a storage medium. The method comprises the following steps: acquiring a d-axis component and a q-axis component of a three-phase power grid voltage in a rotating coordinate system according to an actual value of each phase of power grid voltage in the three-phase power grid voltage; performing phase shifting on the q-axis component by a preset angle, and then superposing the q-axis component with the d-axis component to obtain a first output result; the actual value of each phase of power grid voltage is subjected to phase shifting by a preset angle and then is superposed with the corresponding actual value of each phase of power grid voltage, and a second output result is obtained; and performing logical operation on the first output result and the second output result to obtain a voltage sag detection result. Because the occurrence of the voltage sag has randomness and rapidness, the voltage sag detection method in the applicat |
| format | Patent |
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The method comprises the following steps: acquiring a d-axis component and a q-axis component of a three-phase power grid voltage in a rotating coordinate system according to an actual value of each phase of power grid voltage in the three-phase power grid voltage; performing phase shifting on the q-axis component by a preset angle, and then superposing the q-axis component with the d-axis component to obtain a first output result; the actual value of each phase of power grid voltage is subjected to phase shifting by a preset angle and then is superposed with the corresponding actual value of each phase of power grid voltage, and a second output result is obtained; and performing logical operation on the first output result and the second output result to obtain a voltage sag detection result. 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The method comprises the following steps: acquiring a d-axis component and a q-axis component of a three-phase power grid voltage in a rotating coordinate system according to an actual value of each phase of power grid voltage in the three-phase power grid voltage; performing phase shifting on the q-axis component by a preset angle, and then superposing the q-axis component with the d-axis component to obtain a first output result; the actual value of each phase of power grid voltage is subjected to phase shifting by a preset angle and then is superposed with the corresponding actual value of each phase of power grid voltage, and a second output result is obtained; and performing logical operation on the first output result and the second output result to obtain a voltage sag detection result. 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The method comprises the following steps: acquiring a d-axis component and a q-axis component of a three-phase power grid voltage in a rotating coordinate system according to an actual value of each phase of power grid voltage in the three-phase power grid voltage; performing phase shifting on the q-axis component by a preset angle, and then superposing the q-axis component with the d-axis component to obtain a first output result; the actual value of each phase of power grid voltage is subjected to phase shifting by a preset angle and then is superposed with the corresponding actual value of each phase of power grid voltage, and a second output result is obtained; and performing logical operation on the first output result and the second output result to obtain a voltage sag detection result. Because the occurrence of the voltage sag has randomness and rapidness, the voltage sag detection method in the applicat</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
| title | Voltage sag detection method, device and equipment and storage medium |
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