A digital power quality management system

Abstract

The present invention discloses a digital power quality management system, comprising a control module, an identification module, a switching module, a query module, a feedback module, a positioning module and an optimization module. The present invention backs up the data of a main control unit to a slave control unit, and switches the main control unit to the slave control unit when an abnormality is detected in the main control unit, so that the equipment can continue to work as a whole after a fault occurs, thereby ensuring effective and safe power supply. A user can query relevant data of power equipment, and when the data is abnormal, the user is prompted, and the user can remotely control the power-consuming equipment, thereby preventing the expansion of the fault of the power-consuming equipment. When monitoring abnormalities occur, the power supply personnel are prompted to perform maintenance, thereby ensuring the normal operation of the overall power system. When the power quality deteriorates, relevant equipment is automatically started, etc., so that the equipment, etc. can be in a suitable state, thereby ensuring the normal operation of the power-consuming equipment and improving the power quality. Power faults are remotely detected and located, and the location of power quality problems is determined, thereby quickly eliminating power quality problems.

Description

Technical Field

[0001] The invention relates to the field of electric power technology, and in particular to a digital power quality management system. Background Art

[0002] With the development of technology, in order to ensure safe power supply, the power department or users of related power terminals will install temperature, humidity, voltage and current monitoring equipment in the corresponding areas to monitor the working performance of the power equipment and whether the power supply is normal.

[0003] However, the existing related power management equipment still has certain defects:

[0004] ① The existing power monitoring equipment cannot shut down the working power supply when the detected equipment is abnormal, so it may cause the failure to expand after the related equipment fails. Moreover, the control system of the power monitoring equipment does not have a backup, which means that after the control system fails, the power monitoring equipment as a whole will no longer be able to continue working, and thus it is impossible to ensure effective and safe power supply;

[0005] ② Users cannot query the current, voltage, power, metering, temperature data, etc. of their own power consumption area remotely, and cannot be prompted when an abnormality occurs. Users cannot remotely shut down the power supply. When equipment such as power consumption area protectors fail, the failure may be amplified, and users cannot start and stop related equipment remotely, which will bring certain inconvenience to users;

[0006] ③ The control system of the power monitoring equipment cannot identify the corresponding parameters of the relevant protection monitoring equipment, etc., and cannot prompt the relevant personnel to perform maintenance when the parameters of the relevant equipment are abnormal, resulting in the failure of the relevant equipment to cause the overall system to fail to work normally;

[0007] ④ Lack of power quality optimization capabilities. Existing power consumption monitoring equipment usually only has relevant data monitoring functions, lacks the ability to actively adjust power quality, cannot improve power quality when power quality deteriorates, and cannot optimize power quality in real time to improve equipment performance and efficiency;

[0008] ⑤ Unable to accurately locate power quality problems. Existing power consumption monitoring equipment only provides overall power quality data and cannot accurately locate the location of power quality problems, making it difficult for users to quickly eliminate power quality problems and increasing the difficulty of troubleshooting and maintenance. Summary of the invention

[0009] In order to solve the above-mentioned technical problems, the present invention provides a digital power quality management system.

[0010] The technical solution of the present invention is achieved in this way:

[0011] A digital power quality management system, comprising a control module, an identification module, a switching module, a query module, a feedback module, a positioning module, and an optimization module;

[0012] The control module is used to control the working mode of the power equipment and to synchronously back up all data of the main control system to the slave control system;

[0013] The identification module is used to monitor the operating parameters of the control module, active filter, dynamic reactive power compensation device, frequency converter, voltage stabilizer, temperature detection circuit, humidity detection circuit, voltage and current detection mechanism, data transmission circuit and multiple devices in real time, and identify abnormal data;

[0014] The switching module is used to automatically switch to the backup slave control system when the main control system in the control module is abnormal; after the main control system is repaired, it switches back to the main control system;

[0015] The query module is used to allow users to query the current, voltage, power, metering, and temperature data of themselves and their electrical equipment through the terminal device at a remote end. When the data is abnormal, the user can remotely shut down the power supply in time and remotely start and stop related equipment;

[0016] The feedback module is used to specifically give the parameter value of the corresponding equipment when abnormal data appears, prompting the power supply personnel to perform targeted maintenance; it can also promptly prompt the user when the relevant data is abnormal;

[0017] The positioning module is used to remotely detect and locate power faults and determine the location of power quality problems;

[0018] The optimization module is used to automatically start the active filter, dynamic reactive compensation device, inverter or adjust their output parameters when the on-site power quality deteriorates, so as to ensure that the power voltage, current and frequency parameters are in a suitable state and the power equipment works normally.

[0019] Preferably, the temperature detection circuit includes an electrically connected thermistor and a resistor, and one end of the thermistor is connected to one end of the resistor; the humidity detection circuit includes an electrically connected humidity detector product and a resistor, and the signal output end of the humidity detector is connected to one end of the resistor; the voltage and current detector includes a transformer and an output sub-circuit, and the output sub-circuit includes an electrically connected diode, a resistor, and a capacitor, and is electrically connected to the transformer, one end of the transformer winding is connected to the positive electrode of the diode, the negative electrode of the diode is connected to one end of the resistor and the positive electrode of the capacitor, and the negative electrode of the capacitor is connected to the other end of the transformer winding.

[0020] Preferably, the control module includes a master control unit, a slave control unit, and a backup unit;

[0021] The main control unit is used to control the working mode of the power equipment as a priority;

[0022] The slave control unit is used to control the working mode of the power equipment as a secondary;

[0023] The backup unit is used to synchronously back up all data of the master control unit to the slave control unit.

[0024] Preferably, the identification module includes a real-time monitoring unit and an abnormality identification unit;

[0025] The real-time monitoring unit is used to monitor the operating parameters of the control module, active filter, dynamic reactive power compensation device, frequency converter, voltage stabilizer, temperature detection circuit, humidity detection circuit, voltage and current detection mechanism, data transmission circuit and other equipment in real time;

[0026] The abnormality identification unit is used to identify abnormal data in the real-time monitoring unit, including data on deterioration of power quality.

[0027] Preferably, the switching module includes an abnormal switching unit and a normal switching unit;

[0028] The abnormal switching unit is used to automatically switch to the backup slave control unit when the main control unit is working abnormally;

[0029] The normal switching unit is used to automatically switch back to the main control unit when the abnormality of the main control unit is repaired.

[0030] Preferably, the query module includes a user query unit and a user operation unit;

[0031] The user query unit is used to allow users to query the current, voltage, power, metering and temperature data of themselves and their electrical equipment via the terminal device at a remote end;

[0032] The user operation unit is used to allow the user to remotely shut down the power supply at any time, and remotely start and stop related equipment.

[0033] Preferably, the feedback module includes a prompt unit and a display unit;

[0034] The prompt unit is used to prompt the user in time when the relevant data is abnormal;

[0035] The display unit is used to specifically give the parameter value of the corresponding equipment and display it to the power supply personnel when abnormal data appears.

[0036] Preferably, the positioning module includes a topology map construction unit, a calculation unit, an abnormality judgment unit, and an abnormality positioning unit;

[0037] The topology map construction unit is used to construct an electrical topology map through a breadth-first search according to the connection relationship of the power equipment;

[0038] The calculation unit is used to obtain relevant parameter values ​​of the power equipment, including voltage values ​​and current values, and calculate the potential difference matrix and branch current matrix at both ends of each branch in the electrical topology diagram based on Tellegen's theorem;

[0039] The abnormality judgment unit is used to calculate the power consumption within a predetermined time according to the potential difference matrix of each branch and the branch current matrix, and judge whether the power consumption and the same-direction voltage are abnormal by using the mean square error method and the interquartile range method, and judge whether there is an abnormality in the electric energy meter in the electrical topology diagram according to the abnormal power consumption and the abnormal same-direction voltage;

[0040] The abnormality locating unit is used to locate the abnormal electric energy meter by using the Fisher discrimination method if there is an abnormal situation of the electric energy meter.

[0041] Preferably, the optimization module includes a start-stop unit and a regulation unit;

[0042] The start-stop unit is used to automatically and correspondingly start the active filter, the dynamic reactive power compensation device, and the frequency converter;

[0043] The regulating unit is used for automatically regulating the output parameters of the active filter, the dynamic reactive power compensation device and the frequency converter.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] (1) The present invention sets a control module, an identification module and a switching module. The control module synchronously backs up the data of the main control unit to the slave control unit. When the identification module detects that the main control unit of the device is abnormal, the switching module switches the working unit from the main control unit to the slave control unit, so that after the control system fails, the power consumption monitoring device can continue to work as a whole, ensuring effective and safe power supply;

[0046] (2) The present invention provides an identification module, a query module and a feedback module. The user can query the relevant data of the power equipment through the query module. When the identification module detects that the data is abnormal, the feedback module prompts the user, and the user can remotely control the power equipment through the query module, including shutting down the power supply, starting and stopping related equipment, etc., which can effectively prevent the expansion of the fault of the power equipment and ensure the safety of electricity use;

[0047] (3) The present invention sets an identification module and a feedback module. The identification module can identify the corresponding parameters of the relevant protection monitoring equipment. When the monitoring is abnormal, the feedback module prompts the power supply personnel to perform maintenance, thereby ensuring the normal operation of the overall power system;

[0048] (4) The present invention provides a device identification module and an optimization module. When the power quality deteriorates, the device or parameter is automatically started or adjusted so that the device or parameter is in a suitable state to ensure the normal operation of the electrical equipment, thereby improving the power quality and realizing real-time optimization of the power quality to improve the performance and efficiency of the equipment.

[0049] (5) The present invention provides a positioning module to remotely detect and locate power faults and determine the location of power quality problems, thereby being able to quickly eliminate power quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a system block diagram of a digital power quality management system of the present invention. DETAILED DESCRIPTION

[0051] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0052] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] like Figure 1 As shown, an embodiment of the present invention provides a digital power quality management system, including a control module, an identification module, a switching module, a query module, a feedback module, a positioning module, and an optimization module.

[0054] The control module is used to control the working mode of the power equipment and synchronously back up all data of the main control system to the slave control system; the power consumption monitoring device cannot shut down its working power supply when an abnormality occurs in the detected device, but the present invention synchronizes and backs up the data of the control system so that when an abnormality occurs in the main control, it can immediately switch to the slave control, thereby preventing the abnormality from expanding, and ensuring that the power consumption monitoring device can continue to work normally, thereby ensuring effective and safe power supply.

[0055] The identification module is used to monitor the control module, as well as the working parameters of multiple devices such as active filters, dynamic reactive power compensation devices, frequency converters, voltage-stabilized power supplies, temperature detection circuits, humidity detection circuits, voltage and current detection mechanisms, and data transmission circuits in real time, identify abnormal data, and the real-time monitoring of multiple device working parameters includes working current, voltage, power and other data.

[0056] The switching module is used to automatically switch to the backup slave control system when the main control system in the control module is abnormal; after the main control system is repaired, it switches back to the main control system.

[0057] The query module is used to allow users to query the current, voltage, power, metering, and temperature data of themselves and their electrical equipment remotely through terminal equipment. When the data is abnormal, the user can remotely shut down the power supply in time and remotely start and stop related equipment.

[0058] The feedback module is used to give specific parameter values ​​of corresponding equipment when abnormal data occurs, prompting the power supply personnel to perform targeted maintenance. The methods of prompting the power supply personnel when abnormal data occurs include text, voice and SMS on the display screen interface of the control module; users can also be promptly prompted when relevant data is abnormal.

[0059] The positioning module is used to remotely detect and locate power faults and determine the location of power quality problems, so that power quality problems can be quickly eliminated.

[0060] The optimization module is used to automatically start the active filter, dynamic reactive compensation device, inverter or adjust their output parameters when the on-site power quality deteriorates, so as to ensure that the power voltage, current and frequency parameters are in a suitable state and the power equipment works normally.

[0061] Preferably, the temperature detection circuit includes an electrically connected thermistor and a resistor, and one end of the thermistor is connected to one end of the resistor; the humidity detection circuit includes an electrically connected humidity detector product and a resistor, and the signal output end of the humidity detector is connected to one end of the resistor; the voltage and current detector includes a transformer and an output sub-circuit, and the output sub-circuit includes an electrically connected diode, a resistor, and a capacitor, and is electrically connected to the transformer, one end of the transformer winding is connected to the positive electrode of the diode, the negative electrode of the diode is connected to one end of the resistor and the positive electrode of the capacitor, and the negative electrode of the capacitor is connected to the other end of the transformer winding.

[0062] Preferably, the control module includes a master control unit, a slave control unit, and a backup unit;

[0063] The main control unit is used to control the working mode of the power equipment as a priority;

[0064] The slave control unit is used to control the working mode of the power equipment as a secondary;

[0065] The backup unit is used to synchronously back up all data of the master control unit to the slave control unit.

[0066] Preferably, the identification module includes a real-time monitoring unit and an abnormality identification unit;

[0067] The real-time monitoring unit is used to monitor the operating parameters of the control module, active filter, dynamic reactive power compensation device, frequency converter, voltage stabilizer, temperature detection circuit, humidity detection circuit, voltage and current detection mechanism, data transmission circuit and other equipment in real time;

[0068] The abnormality identification unit is used to identify abnormal data in the real-time monitoring unit, including data on deterioration of power quality.

[0069] Preferably, the switching module includes an abnormal switching unit and a normal switching unit;

[0070] The abnormal switching unit is used to automatically switch to the backup slave control unit when the main control unit is working abnormally;

[0071] The normal switching unit is used to automatically switch back to the main control unit when the abnormality of the main control unit is repaired.

[0072] Preferably, the query module includes a user query unit and a user operation unit;

[0073] The user query unit is used to allow users to query the current, voltage, power, metering and temperature data of themselves and their electrical equipment via the terminal device at a remote end;

[0074] The user operation unit is used to allow the user to remotely shut down the power supply at any time, and remotely start and stop related equipment.

[0075] Preferably, the feedback module includes a prompt unit and a display unit;

[0076] The prompt unit is used to prompt the user in time when the relevant data is abnormal;

[0077] The display unit is used to specifically give the parameter value of the corresponding equipment and display it to the power supply personnel when abnormal data appears.

[0078] Preferably, the positioning module includes a topology map construction unit, a calculation unit, an abnormality judgment unit, and an abnormality positioning unit;

[0079] The topology map construction unit is used to construct an electrical topology map through a breadth-first search according to the connection relationship of the power equipment;

[0080] The calculation unit is used to obtain relevant parameter values ​​of the power equipment, including voltage values ​​and current values, and calculate the potential difference matrix and branch current matrix at both ends of each branch in the electrical topology diagram based on Tellegen's theorem;

[0081] The abnormality judgment unit is used to calculate the power consumption within a predetermined time according to the potential difference matrix of each branch and the branch current matrix, and judge whether the power consumption and the same-direction voltage are abnormal by using the mean square error method and the interquartile range method, and judge whether there is an abnormality in the electric energy meter in the electrical topology diagram according to the abnormal power consumption and the abnormal same-direction voltage;

[0082] The abnormality locating unit is used to locate the abnormal electric energy meter by using the Fisher discrimination method if there is an abnormal situation of the electric energy meter.

[0083] Preferably, the optimization module includes a start-stop unit and a regulation unit;

[0084] The start-stop unit is used to automatically and correspondingly start the active filter, the dynamic reactive power compensation device, and the frequency converter;

[0085] The regulating unit is used for automatically regulating the output parameters of the active filter, the dynamic reactive power compensation device and the frequency converter.

[0086] The embodiments of the present invention have the following beneficial effects.

[0087] (1) The present invention sets a control module, an identification module and a switching module. The control module synchronously backs up the data of the main control unit to the slave control unit. When the identification module detects that the main control unit of the device is abnormal, the switching module switches the working unit from the main control unit to the slave control unit. This ensures that after a control system fails, the power consumption monitoring device can continue to work as a whole, thereby ensuring effective and safe power supply.

[0088] (2) The present invention sets an identification module, a query module and a feedback module. The user can query the relevant data of the power equipment through the query module. When the identification module detects that the data is abnormal, the feedback module prompts the user, and the user remotely controls the power equipment through the query module, including shutting off the power supply, starting and stopping related equipment, etc., which can effectively prevent the expansion of faults of the power equipment and ensure the safety of electricity use.

[0089] (3) The present invention sets an identification module and a feedback module. The identification module can identify the corresponding parameters of the relevant protection monitoring equipment. When the monitoring is abnormal, the feedback module prompts the power supply personnel to perform maintenance, thereby ensuring the normal operation of the overall power system.

[0090] (4) The present invention sets up a device identification module and an optimization module. When the power quality deteriorates, the relevant equipment is automatically started or relevant parameters are adjusted so that the equipment or parameters can be in a suitable state to ensure the normal operation of the electrical equipment, thereby improving the power quality and realizing real-time optimization of the power quality to enhance the performance and efficiency of the equipment.

[0091] (5) The present invention provides a positioning module to remotely detect and locate power faults and determine the location of power quality problems, thereby being able to quickly eliminate power quality problems.

[0092] The foregoing examples are merely illustrative and are used to explain some features of the method of the present invention. The appended claims are intended to claim the widest possible range that can be conceived, and the embodiments presented herein are only illustrations of selected implementations according to the combination of all possible embodiments. Therefore, it is the applicant's intention that the appended claims are not limited by the selection of examples that illustrate the features of the present invention. Some numerical ranges used in the claims also include sub-ranges within them, and changes in these ranges should also be interpreted as being covered by the appended claims where possible.

Claims

1. A digital power quality management system, characterized in that: It includes control module, identification module, switching module, query module, feedback module, positioning module and optimization module; The control module is used to control the working mode of the power equipment and to synchronously back up all data of the main control system to the slave control system; The identification module is used to monitor the operating parameters of the control module, active filter, dynamic reactive power compensation device, frequency converter, voltage stabilizer, temperature detection circuit, humidity detection circuit, voltage and current detection mechanism, data transmission circuit and multiple devices in real time, and identify abnormal data; The switching module is used to automatically switch to the backup slave control system when the main control system in the control module is abnormal; after the main control system is repaired, it switches back to the main control system; The query module is used to allow users to query the current, voltage, power, metering, and temperature data of themselves and their electrical equipment through the terminal device at a remote end. When the data is abnormal, the user can remotely shut down the power supply in time and remotely start and stop related equipment; The feedback module is used to specifically give the parameter value of the corresponding equipment when abnormal data appears, prompting the power supply personnel to perform targeted maintenance; it can also promptly prompt the user when the relevant data is abnormal; The positioning module is used to remotely detect and locate power faults and determine the location of power quality problems; The optimization module is used to automatically start the active filter, dynamic reactive compensation device, inverter or adjust their output parameters when the on-site power quality deteriorates, so as to ensure that the power voltage, current and frequency parameters are in a suitable state and the power equipment works normally.

2. A digital power quality management system according to claim 1, characterized in that: The temperature detection circuit includes an electrically connected thermistor and a resistor, and one end of the thermistor is connected to one end of the resistor; the humidity detection circuit includes an electrically connected humidity detector product and a resistor, and the signal output end of the humidity detector is connected to one end of the resistor; the voltage and current detection machine includes a transformer and an output subcircuit, and the output subcircuit includes an electrically connected diode, a resistor, and a capacitor, and is electrically connected to the transformer, one end of the transformer winding is connected to the positive electrode of the diode, the negative electrode of the diode is connected to one end of the resistor and the positive electrode of the capacitor, and the negative electrode of the capacitor is connected to the other end of the transformer winding.

3. A digital power quality management system according to claim 1, characterized in that: The control module includes a main control unit, a slave control unit, and a backup unit; The main control unit is used to control the working mode of the power equipment as a priority; The slave control unit is used to control the working mode of the power equipment as a secondary; The backup unit is used to synchronously back up all data of the master control unit to the slave control unit.

4. A digital power quality management system according to claim 1, characterized in that: The identification module includes a real-time monitoring unit and an abnormality identification unit; The real-time monitoring unit is used to monitor the operating parameters of the control module, active filter, dynamic reactive power compensation device, frequency converter, voltage stabilizer, temperature detection circuit, humidity detection circuit, voltage and current detection mechanism, data transmission circuit and other equipment in real time; The abnormality identification unit is used to identify abnormal data in the real-time monitoring unit, including data on deterioration of power quality.

5. A digital power quality management system according to claim 1, characterized in that: The switching module includes an abnormal switching unit and a normal switching unit; The abnormal switching unit is used to automatically switch to the backup slave control unit when the main control unit is working abnormally; The normal switching unit is used to automatically switch back to the main control unit when the abnormality of the main control unit is repaired.

6. A digital power quality management system according to claim 1, characterized in that: The query module includes a user query unit and a user operation unit; The user query unit is used to allow users to query the current, voltage, power, metering and temperature data of themselves and their electrical equipment via the terminal device at a remote end; The user operation unit is used to allow the user to remotely shut down the power supply at any time, and remotely start and stop related equipment.

7. A digital power quality management system according to claim 1, characterized in that: The feedback module includes a prompt unit and a display unit; The prompt unit is used to prompt the user in time when the relevant data is abnormal; The display unit is used to specifically give the parameter value of the corresponding equipment and display it to the power supply personnel when abnormal data appears.

8. A digital power quality management system according to claim 1, characterized in that: The positioning module includes a topology map construction unit, a calculation unit, an abnormality judgment unit, and an abnormality positioning unit; The topology map construction unit is used to construct an electrical topology map through a breadth-first search according to the connection relationship of the power equipment; The calculation unit is used to obtain relevant parameter values ​​of the power equipment, including voltage values ​​and current values, and calculate the potential difference matrix and branch current matrix at both ends of each branch in the electrical topology diagram based on Tellegen's theorem; The abnormality judgment unit is used to calculate the power consumption within a predetermined time according to the potential difference matrix of each branch and the branch current matrix, and judge whether the power consumption and the same-direction voltage are abnormal by using the mean square error method and the interquartile range method, and judge whether there is an abnormality in the electric energy meter in the electrical topology diagram according to the abnormal power consumption and the abnormal same-direction voltage; The abnormality locating unit is used to locate the abnormal electric energy meter by using the Fisher discrimination method if there is an abnormal situation of the electric energy meter.

9. A digital power quality management system according to claim 1, characterized in that: The optimization module includes a start-stop unit and a regulation unit; The start-stop unit is used to automatically and correspondingly start the active filter, the dynamic reactive power compensation device, and the frequency converter; The regulating unit is used for automatically regulating the output parameters of the active filter, the dynamic reactive power compensation device and the frequency converter.

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