A Real-time Detection Method for DC System Used in Substation
A DC system, real-time detection technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as difficult monitoring of electric energy metering devices, and achieve the effect of strengthening real-time detection, strengthening connection, and timely and reliable processing
Active Publication Date: 2019-11-12
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to disclose a real-time detection method for a DC system used in substations to solve the problem of difficult monitoring in the management of operating electric energy metering devices in view of the above-mentioned deficiencies in the prior art
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[0033] see Figure 1 to Figure 3 , is a flow chart of a real-time detection method for a DC system of a substation proposed by the present invention.
[0034] like Figure 1 to Figure 3 As shown, a DC system real-time detection method for a substation is characterized in that it comprises the following steps:
[0035] The battery operates in floating charge mode;
[0036] Start the self-test mode and reduce the charging voltage of the charger;
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The invention discloses a DC system real-time detection method for a transformer station. The DC system real-time detection method comprises the steps of: enabling a storage battery to operate in a floating charge mode; enabling a control and detection unit to reduce charging voltage and starting a self-detection interruption system; enabling the control and detection unit to detect the storage battery and controlling the on-off state of a storage battery discharge circuit; increasing the charging voltage of the storage battery in order that the storage battery enters an equalizing charge mode. The method strengthens the real-time self-detection of the storage battery and intensifies the connection to a DC system. The self-detection mode of the storage battery can automatically detect the advantages and disadvantages of the storage battery in real time in a normal floating charging operation mode and verify the integrity of the DC circuit through the readings of an ammeter. Compared with a conventional storage battery checking charge and discharge test, the method is safe and reliable, saves time and labor, and prolongs the service life of the storage battery.
Description
technical field [0001] The invention relates to the technical field of substation safety control, and more specifically relates to a real-time detection method for a DC system of a substation. Background technique [0002] The DC system not only provides reliable DC power for substation relay protection, automatic devices, control, signal and emergency lighting, but also provides reliable operating power for daily switching operations. Whether it is reliable or not directly plays a vital role in the safe operation of the substation. [0003] When the entire substation loses voltage and the charger stops working, the battery pack is the last barrier for the safe operation of the substation. Whether it can provide reliable DC power for the substation is of great significance. Accidents such as power outages and equipment burnouts in substations. Therefore, real-time and reliable online monitoring of batteries is of great significance to the entire substation and even the pow...
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IPC IPC(8): G01R31/00G01R31/387G01R31/392
CPCG01R31/00G01R31/382
Inventor 姚冯信王鹏弋方尹冬罗钊韩笑
Owner STATE GRID CORP OF CHINA
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