1. Overview. Power system microcomputer line protection training and assessment deviceIt adopts the differential protection device and backup protection device of microcomputer transformer, which are widely used in modern power engineering, and is equipped with modules such as power supply, three-roll power transformer, transformer, and intelligent fault setting assessment.
Power system microcomputer line protection training and assessment deviceIt mainly completes the practical training of protection device characteristic testing, wiring, setting, operation and other aspects. It can be used for training in the electric power industry, and can also be used for the assessment of students in colleges and universities, technical secondary schools and related majors.
Intelligent fault setting and large-screen LCD clicker: operating unit operating unit circuit board (integrated with the display), keyboard. The operating unit adopts multiple protection design; Dual power DC 12V input; 128x64LCD display; 8 switching alarm inputs, up to 48 relay controls; The operating unit can be offline assessment without networking; Scoring can be automated; The display screen prompts when there is an alarm.
It mainly has the following operation functions:
Student Portal: Used when students troubleshoot, you can query the remaining time of the assessment.
Teacher Portal: Setup Failure,Eliminate all faults, set the assessment time, change the login password, and set the device number.
A login password is required for the Teacher Portal.
Score Query: Check the student's current score.
Student ID Query: Query the student number set by the teacher through the computer.
Device number query: Query the local device address, each operation unit has a unique device address.
Assessment Time Start: It is used to count down the assessment after the teacher has set the assessment time.
IIPower system microcomputer line protection training and assessment devicePractical training and assessment items.
1.Basic training items.
1) Measurement of normal operation of the system and unbalanced current.
2) Simulated transformer gas protection.
3) Current quick break protection of transformer.
4) Longitudinal differential protection setting of microcomputer transformer.
5) Second harmonic braking of transformer.
6) Differential quick break protection of transformer.
7) Three-winding transformer differential protection.
8) Y-12 double winding transformer differential protection.
9) Y-11 double winding transformer differential protection.
10) Study of ratiometric braking characteristics.
11) Overcurrent protection of double winding transformer.
12) Overcurrent protection of three-winding transformer.
13) Transformer low voltage starting overcurrent protection.
14) Transformer composite voltage starting overcurrent protection.
15) Neutral point direct grounding operation transformer zero sequence protection.
16) Zero sequence protection of transformers running with partial neutral grounding.
17) Overload protection of double winding transformer.
18) Overload protection of three-winding transformer.
19) Secondary circuit wiring.
20) Secondary circuit commissioning.
21) Protection Calculation Tuning.
22) Protective Action Test 2The assessment items --- designed by themselves according to the topic, and the self-proposed steps are wired by themselves to complete the assessment.
23) Y-11 double winding transformer overcurrent protection.
24) Y-11 double winding transformer overload protection core.
25) Double-winding transformer protection synthesis.
26) Three-winding transformer protection synthesis.
27) Secondary circuit troubleshooting.
28) Send the setting value from afar, and operate the switch from afar to jump and close the training.
29) The host computer dynamically displays the main junction line and power flow, and prints information about the fixed value and power flow.