Mimic-disconnecting switch testing device for relay protection and control method thereof
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A technology for simulating circuit breakers and testing devices, which is applied in the field of simulating circuit breaker testing devices and controls for relay protection, and can solve problems such as unrealistic test time, no circuit breakers, and affecting work efficiency
Active Publication Date: 2014-12-31
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Therefore, work steps such as protection performance test and circuit group test work are often omitted due to rushing the construction period, leaving potential safety hazards
However, it is unrealistic to reduce the maintenance and test time of a switchgear
Even if there is plenty of time, the work efficiency will be affected due to downtime and waiting; at the same time, due to the need to drive multiple switches for the performance test of the protection equipment, the probability of circuit breaker failure is increased, and the safety of the primary equipment will also be affected to a certain extent.
[0003] In addition, many relay protection device training bases are only equipped with a single device, without actual circuit breakers, and cannot correctly simulate the operating status of on-site equipment for protection performance tests and circuit group tests.
Method used
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Embodiment 1
[0127] refer to figure 1 , an analog circuit breaker testing device for relay protection, comprising an acquisition module, a processor, an execution module, a display module, a setting module, an alarm module, a command detection point, a test jack, a DC power supply current sampling circuit and a power module. The test jacks are composed of 107A, 107B, 107C, 137A, 137B, 137C, 237A, 237B, 237C jacks for connecting 107A, 107B, 107C, 137A, 137B, 137C, 237A, 237B, 237C loops, which The corresponding terminals are connected to the corresponding input terminals of the executive module; see Figure 5 , Figure 8 .
[0128] refer to figure 1 , Figure 5 , Figure 8 , the command detection point consists of 107A command detection point KM107A1, 107B command detection point KM107B1, 107C command detection point KM107C1, 137A command detection point KM137A1, 137B command detection point KM137B1, 137C command detection point KM137C1, 237A command detection point KM237A1, 237B Th...
Embodiment 2
[0158] A control method of the described relay protection analog circuit breaker testing device, the specific steps are:
[0159] (1) Power on;
[0160] (2) Initialization: the relays KM3, KM6, KM9, KM7, KM4, and KM10 are in the pull-in state, the relays KM1, KM2, and KM5 are in the release state, and the device is in the off state; the phase A, The opening indicators of phase B and C are on, and the closing indicators of phase A, B and C are off. Read the closing setting time and opening setting time, and the phase A timer, B phase timer and C phase timer are cleared. zero;
[0161] (3) The timer is cleared;
[0162] (4) Detect whether the output current of the DC power supply current detection circuit is greater than 0.5A, if not, turn to step (3); if yes, execute step (5);
[0163] (5) Sampling the signal input of each phase: sampling the magnitude of the current value input by 107A, 107B, 107C, 137A, 137B, 137C, 237A, 237B, and 237C loops; ...
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Abstract
The invention discloses a mimic-disconnecting switch testing device for relay protection and a control method thereof. The mimic-disconnecting switch testing device comprises an acquisition module, a processor, an execution module, a display module, a setting module, an alarm module, a direct-current power supply current sampling circuit and a power supply module. The processor receives and processes relay protection device commands inputted by the acquisition module and directs the execution module to simulate the opening and closing operations of a circuit breaker and displays the related state change under the control of an embedded program. The setting module adjusts the command identification voltage reference voltage in the acquisition module according to the set opening and closing setting current and stores the set opening and closing time in the processor. The display module displays the state of the circuit breaker under the control of the processor. The mimic-disconnecting switch testing device can achieve the single-phase opening and closing test and the three-phase opening and closing test of the relay protection equipment and the anti-tripping test of the operation box of the circuit breaker. The mimic-disconnecting switch testing device can simulate the related operating condition of the field circuit breaker relative to the relay protection equipment more reliably, and performs the equipment protection debugging.
Description
technical field [0001] The invention relates to a simulated circuit breaker testing device and a control method thereof, in particular to a simulated circuit breaker testing device and a control method for relay protection. Background technique [0002] During the pre-test and transformation of the relay protection device in the substation, it is often impossible to carry out the operation characteristic debugging of the protection device and the transmission test of the whole circuit group because the primary circuit breaker equipment does not have the transmission conditions. Once the circuit breaker equipment has the transmission conditions, it needs to go through multiple sets of procedures such as maintenance and testing, which does not include the time it takes to deal with temporary defects of the switch. After the primary circuit breaker equipment has the transmission conditions, there is often little time left for the protection to conduct the transmission test of t...
Claims
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Application Information
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