A Control Circuit of Distribution Network Ring Main Cabinet with Disconnection Monitoring Function
A technology of control loop and power distribution network, applied in circuit devices, panel/switch station circuit devices, measuring electricity, etc., it can solve the problem that inspectors cannot find, affect the correctness of remote control operation, and affect the success rate of remote control, etc. Problems such as key indicators of chemical operation
Active Publication Date: 2017-01-11
STATE GRID CORP OF CHINA +2
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in the case of disconnection of the control loop of the existing ring main unit, the lack of indication signals on site prevents inspectors from discovering abnormal conditions of the control loop and eliminating defects in time
At the same time, the information about the disconnection of the control loop was not sent to the master station system of distribution automation through remote signaling, which caused the distribution network dispatchers to fail to discover the abnormal situation of the control loop in time, which affected the correctness of the remote control operation of the distribution network dispatchers, thus Key indicators affecting the practical operation of distribution automation such as remote control success rate
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
[0016] Such as figure 1 As shown, the control circuit of the distribution network ring main unit with the disconnection monitoring function in this embodiment includes an on-site remote switching circuit connected in parallel to the DC power bus, a closing circuit, an opening circuit, a closing indication circuit, and an opening indication circuit, master station closing signal circuit and master station opening signal circuit, the closing intermediate relay KM1 normally open auxiliary contact and closing coil HQ are connected in series in the closing circuit, and the opening intermediate relay KM2 normally open is connected in series in the opening circuit Open the auxiliary contact and the opening coil TQ, and the coil of the closing intermediate relay KM1 and the coil of the opening intermediate relay KM2 are respectively connected in series in the local remote switching circuit, which is characterized in that the control circuit of the distribution network ring main unit al...
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 a power distribution network ring main unit control circuit having a broken line monitoring function. The power distribution network ring main unit control circuit includes a closing broken line monitoring relay, an opening broken line monitoring relay, a remote communication contact and a broken line on-site indication lamp. The closing broken line monitoring relay and the opening broken line monitoring relay each include a coil and two normally closed contacts. The coil of the closing broken line monitoring relay is in parallel connection with a normally open auxiliary contact of a closing intermediate relay. The coil of the opening broken line monitoring relay is in parallel connection with a normally open auxiliary contact of an opening intermediate relay. The two normally closed contacts of each of the closing broken line monitoring relay and the opening broken line monitoring relay are respectively connected to the remote communication contact and the broken line on-site indication lamp respectively. According to the invention, a remote control circuit abnormity monitoring method and a local control circuit abnormity monitoring method are provided in a creative manner, thereby thoroughly solving the problems that inspection workers cannot timely find and handle control circuit defects due to the lack of on-site or remote alarming signals causes inspection workers at present. Therefore, the operation correctness of remote control by power distribution network calling workers is improved.
Description
technical field [0001] The invention relates to the technical field of distribution network engineering, in particular to a control loop of a distribution network ring main unit with a disconnection monitoring function. Background technique [0002] At present, the construction of distribution automation in the country continues to advance, and the level of intelligence and automation of distribution networks continues to improve. The success rate of remote control is one of the key indicators affecting the practical level of distribution automation. The existing distribution network ring main unit adopts the method of displaying the position of the switch on the spot, and the opening and closing position of the switch is sent to the master station of the distribution automation system for monitoring through the terminal device of the distribution automation station in the form of remote signaling contacts. . [0003] The existing ring network cabinet control circuit gener...
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): H02B1/24H02J13/00G01R31/02
Inventor 朱吉然冷华唐海国龚汉阳陈宏李红青陈幸赵威侯作
Owner STATE GRID CORP OF CHINA