Monitoring system and method of micro-power grid power quality
A power quality monitoring and monitoring system technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as power outages, and achieve the effect of improving power supply reliability and avoiding large-scale power outages
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Embodiment 1
[0029] see figure 1 As shown in , it is a structural block diagram of a microgrid power quality monitoring system provided in the embodiment of the present application. The micro-grid power quality monitoring system includes several PT / CTs, several circuit breakers, several relay modules, a merging unit, a micro-grid measurement and control device, and a micro-grid monitoring device; each of the PT / CTs is connected to a The circuit breaker is connected and a relay module is connected; each of the relay modules is respectively connected with the merging unit and the microgrid measurement and control device, and each of the relay modules is also connected with a circuit breaker; the merging unit It is connected with the micro-grid measurement and control device; the micro-grid measurement and control device is connected with the micro-grid monitoring device.
[0030] In the microgrid power quality monitoring system, the PT / CT is used to collect the voltage / current of users in t...
Embodiment 2
[0032] see figure 1 As shown in , it is a structural block diagram of a microgrid power quality monitoring system provided in the embodiment of the present application. The micro-grid power quality monitoring system includes several PT / CTs, several circuit breakers, several relay modules, a merging unit, a micro-grid measurement and control device, and a micro-grid monitoring device; each of the PT / CTs is connected to a The circuit breaker is connected and a relay module is connected; each of the relay modules is respectively connected with the merging unit and the microgrid measurement and control device, and each of the relay modules is also connected with a circuit breaker; the merging unit It is connected with the micro-grid measurement and control device; the micro-grid measurement and control device is connected with the micro-grid monitoring device.
[0033] Optionally, each PT / CT is connected to a relay module through an optical fiber, and each PT / CT is connected to a...
Embodiment 3
[0044] On the basis of embodiment 1, see figure 2 As shown, it is a schematic flow chart of a microgrid power quality monitoring method provided by this application, and the monitoring method specifically includes the following steps:
[0045] Collect the user's incoming line voltage / current signal;
[0046] receiving the voltage / current signal and performing amplification processing;
[0047] Combining and synchronizing the amplified voltage / current signals;
[0048] Calculate power consumption and analyze power quality according to the combined and synchronously processed voltage / current signals;
[0049] Receive the power consumption and power quality information, and quickly isolate the faulty single user.
[0050] Optionally, receiving the power consumption and power quality information, and quickly isolating a single user that has failed, specifically includes:
[0051] Judging whether the power quality meets the requirements, if the power quality does not meet the ...
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