[0040]In order to more understand the technical content of the present invention, the specific embodiments are specifically illustrated and described in the accompanying drawings. Embodiments of the present invention will be described with reference to the accompanying drawings in the present disclosure, and embodiments are shown in the drawings. Embodiments of the present disclosure do not have to be bound to all aspects of the invention. It should be understood that the various concepts and embodiments described above, and those described in more detail below can be implemented in many ways, because the concept and embodiments disclosed in the present invention are not Limited to any embodiment. In addition, some aspects disclosed thereof may be used singly or in any suitable combination of other aspects disclosed in the present invention.
[0041] Such as Figure 1-2 As shown, a variable metering point manages the device of the user load abnormality, including the special change of the fault alarm III.
[0042] Spectrom Target III, including: power module 1, core processing module 2, button 3, LCD display 4, LED indicator 5, SMS module 6, local maintenance port 7, event acquisition module 8.
[0043] Specifically, the power module 1, using the AC85-264V power input, output DC12V, DC5V, DC3.3V three-way power supply, provides operating power supplies for the variable fault alarm III.
[0044] Core Processing Module 2, an AT91SAM9260 processor, 200MHz frequency, 64msDRAM, 64MNANDFLASH, a variety of interfaces, and a Linux system.
[0045] The button 3 is connected to the core processing module 2 using the I / O interface, which provides a button input function for the variable fault alarm III to interact.
[0046] The LCD display screen 4 is connected to the core processing module 2 using the LCD bus interface, which provides a human-computer interaction information display function for a variable fault alarm III.
[0047] The LED indicator 5 is connected to the core processing module 2 with the core processing module 2, and provides a running state indication for the variable fault alarm III.
[0048] The SMS module 6 includes a GSM module chip M72D, which is connected to the core processing module 2 with the core processing module 2 with the core processing module 2, which provides a SMS input and output operation.
[0049] The local maintenance port 7 is connected to the core processing module 2 using the RJ45 network port, providing a debug, monitoring function for a special fault alarm III.
[0050] The event acquisition module 8 includes a N32G452VEL7 chip with a 12-bit AD converter, 3 sets of voltage transformers, 3 sets of current, signal sampling circuits, and the RS485 interface is connected to the core processing module 2; Event acquisition module The 12-bit AD of the MCU, according to the multi-wavelength wave acquisition of 64 points, the FFT algorithm, the real-time value of the three-phase voltage, current and zero sequence current, the accuracy can reach 1%, and determine whether various types of exception occurred (including speed break failure) Event, overcurrent failure event, overload event, ground speed failure event, ground overcurrent fault event, ground over-limit fault event, low voltage event), provides voltage, current real-time sampling value and abnormal events for special change of fault alarm III data.
[0051] Spectrom Target III In the process of use, first sample the three-phase voltage, current value, and zero-sequence current through the three-phase current vector by the event acquisition module 8, and the zero-induced vector is calculated, and the batch data is set. Determine whether an abnormal event occurs; the core processing module 2 reads the real-time data detected by the event acquisition module 8, realizes the voltage current monitoring function; the core processing module 2 timing reads the event acquisition module 8 detects the abnormal events that occur, generate an exception event Abnormal event record, and generate the corresponding exception alarm text message to the exception event, sends to the set managers to the set managers through the SMS module 6 to help power supply managers quickly determine the location, fault type.
[0052] This embodiment discloses a method of managing a non-alignment meter user load, relying on a variable fault alarm implementation, as follows:
[0053] The seven-class event parameters set in advance, and determine whether an abnormal event is determined in accordance with the setting parameter, the following is as follows:
[0054] 1) Express fault event
[0055] Function: input
[0056] Set value: 6-8 * IE (ie 6-8 times rated current, can change the setting according to the actual load nature);
[0057] Time: 0.00S (can be changed according to the actual load nature)
[0058] This feature description: This function is in the input state, when the detected phase current is greater than the speed break setting, and the set delay is long, that is, it is determined to be a speed-off fault, generate a "speed failure" event, and send the corresponding event Alarm SMS to the set managers mobile phone. Send SMS format is: [Speed Fault Event] + Household Identification No. + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0059] 2) Excessive fault event
[0060] Function: input
[0061] Set value: 3-4 * IE (ie 3-4 times rated current, can be changed according to the actual load properties);
[0062] Delay: 0.20-0.50s (can be set according to the actual load nature)
[0063] This function description: This function is in the input state, when the detected phase current is greater than the overcurrent fault setting, and the set delay is longer, that is, it is determined to be overcurrent fault, generate "overcurrent fault" event, and Send the corresponding event alarm SMS to the set managers mobile phone. Send SMS format is: [Overcurrent Fault Event] + Household Identification No. + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0064] 3) Overload event
[0065] Function: input
[0066] Set value: 1-2 * IE (i.e., 1-2 times rated current, can change the setting according to the actual load nature);
[0067] Delay: 1-10S (can be changed according to the actual load nature)
[0068] This function description: This function is in the input state, when the detected a phase current is greater than the overload setting, and the set delay is long, that is, it is determined to be an overload, generate "overload" event, and send the corresponding event Alarm SMS to the set managers mobile phone. Send SMS format is: [Overload Event] + Household Identification No. + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0069] 4) Grounding speed failure event
[0070] Function: input
[0071] Set value: 3-4 * IE (ie 3-4 times rated current, can be changed according to the actual load properties);
[0072] Time: 0.00S (can be changed according to the actual load nature)
[0073] This function description: This function is in the input state, when the detected zero-sequence current is greater than the ground speed failure setting, and exceed the set delay time, that is, the ground speed failure, generate "ground speed failure" event, and send Corresponding event alarm SMS to the set managers mobile phone. Send SMS format is: [Ground Express Fault Event] + Household Knowledge Number + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0074] 5) Ground overcurrent fault event
[0075] Function: input
[0076] Set value: 1-2 * IE (i.e., 1-2 times rated current, can change the setting according to the actual load nature);
[0077] Delay: 0.20-0.50s (can be set according to the actual load nature)
[0078] This function description: This function is in the input state, when the detected zero-sequence current is greater than the ground overcurrent fault setting, and exceeds the set delay time, that is, the ground overcurrent fault, generate "ground overflow fault" event And send the corresponding event alarm SMS to the set managers mobile phone. Send SMS format is: [ground overcurrent fault event] + account identification number + user name + UA / UB / UC voltage data + Ia / IB / IC / I0 current data + event time.
[0079] 6) Grounding overrun fault event
[0080] Function: input
[0081] Set value: 0.3-0.5 * IE (ie 0.3-0.5 times rated current, can change the setting according to the actual load nature);
[0082] Delay: 1-10S (can be changed according to the actual load nature)
[0083] This feature description: This function is in the input state, when the detected zero-sequence current is greater than the ground over-limit fault setting value, and exceeds the set delay time, that is, the grounding overrun fault is determined to generate "ground over-limit fault" event And send the corresponding event alarm SMS to the set managers mobile phone. Send SMS format is: [Ground Overrower Fault Event] + Household Identification No. + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0084] 7) Low voltage event
[0085] Function: input
[0086] Set value: 0.8 * UE (ie 0.8 times rated voltage can be changed according to the actual load properties);
[0087] Delay: 1-10S (can be changed according to the actual load nature)
[0088] This function description: This function is in the input state. When the detected phase / line voltage is lowered by the normal value to less than the low voltage fault setting, and the set delay is long, that is, the determination is low voltage fault, generated " Low voltage failure "event, and at the same time have other abnormal current abnormal events (including breakfast events, overcurrup events, overload events, grounding speed failure events, grounding overcurrup events, grounding overrun fault events) , Send the corresponding low voltage event alarm SMS to the set managers mobile phone. Send SMS format: [Low Voltage Event] + Household Identification No. + User Name + UA / UB / UC Voltage Data + IA / IB / IC / I0 Current Data + Event Time.
[0089] When judging the phase current, follow the priority: Express Fault Event> Excessive Fault Event> Overloading Event, the high judgment is not sentenced;
[0090] When judging the zero-sequence current, compliance with priority is: ground speed failure event> Grounding over-limit fault event> Grounding over-limit fault event, accuracy is not judged;
[0091] The above incident occurred and the alarm SMS can help power supply line managers quickly locate the source of the fault, reduce the patrol line, shorten the minor time, and improve the power supply of the line, and have a practical benefit of social economic activities.
[0092]Overloading events provide support for the power supply sector to provide support for timely preventive management.
[0093] The historical event records available for the variable fault alarm can provide support for power supply line governance.
[0094] While the invention has been disclosed in the preferred embodiment, it is not intended to limit the invention.The present invention is known in the art of the present invention having general knowledge without departing from the spirit and scope of the invention.Accordingly, the scope of the invention is subject to the definition of the claims.
