Method and device for checking operating conditions of pumped storage units based on electrical quantity characteristics
A technology for pumped storage units and operating conditions, which is applied to measuring devices, measuring electrical variables, measuring electricity, etc., can solve problems such as misjudgment of working conditions, and achieve the effect of preventing misjudgment of working conditions
Active Publication Date: 2019-09-27
NR ELECTRIC CO LTD +1
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The purpose of the present invention is to provide a method for judging the operating conditions of a pumped storage unit using the sequence control process of the unit for verification, and to solve the problem of misjudgment of operating conditions caused by a single contact circuit failure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The overall flow chart of this program is as follows figure 2 shown. Specifically, it is divided into the following steps:
[0036] (1) Create an electrical quantity characteristic table under operating conditions;
[0037] (2) Judging the current operating condition of the unit based on the monitoring system signal or the switch position contact;
[0038] (3) The secondary voltage u connected to the voltage transformer of the generator motor a , u b , u c and the secondary current i of the current transformer on the neutral point side a i b i c , to calculate the current electrical characteristics of the unit;
[0039] (4) Check whether the current electrical quantity characteristics of the unit are consistent with the electrical quantity characteristics corresponding to the current working condition in the operating condition electrical quantity characteristic table, and then judge whether the current working condition discrimination result is correct.
[00...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an electric parameter feature based operation condition checking method and device for a water pump energy storage unit. The method includes steps of (1), creating an operation condition electric parameter feature table; (2) judging current operation condition of the unit according to monitoring system signals and switch position contacts; (3) checking whether the current electric parameter features of the unit are matched with the features corresponding to the operation condition in the operation condition electric parameter feature table and determining current operation condition judgment to be wrong if two or more electric parameter features are inconsistent and the lasting time is comparatively long. By adopting the method and device provided by the invention, a problem of error working condition judgment due to single-contact loop abnormity can be solved.
Description
technical field [0001] The invention relates to the verification of the operating conditions of a pumped-storage unit, in particular to a method and device for verifying the operating conditions of a pumped-storage unit based on electrical quantity characteristics. Background technique [0002] There are many operating conditions of the pumped storage unit, including water pump operating conditions, water pump phase modulation conditions, power generation conditions, power generation phase modulation conditions, SFC start-up conditions, back-to-back start-up conditions, and shutdown. The process relationship between the conditions is complex and the conversion is frequent. However, there are more than 30 protection functions for large-scale pumped storage units. Under certain working conditions, some protection functions are not applicable or may cause malfunction. It can only be put into use under certain working conditions. Therefore, an accurate identification method of...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 王凯王光张琦雪陈俊李华忠钟守平季遥遥
Owner NR ELECTRIC CO LTD