CN115395656A - Digital operation and maintenance auxiliary device, system and method for backup power supply of distribution automation terminal - Google Patents
Digital operation and maintenance auxiliary device, system and method for backup power supply of distribution automation terminal Download PDFInfo
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- CN115395656A CN115395656A CN202211123330.0A CN202211123330A CN115395656A CN 115395656 A CN115395656 A CN 115395656A CN 202211123330 A CN202211123330 A CN 202211123330A CN 115395656 A CN115395656 A CN 115395656A
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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Abstract
The invention provides a digital operation and maintenance auxiliary device, system and method for a backup power supply of a power distribution automation terminal, and belongs to the technical field of operation management and maintenance of a power distribution network. The auxiliary device provided by the invention carries out active operation and maintenance operation through the main control module, and respectively realizes device operation and maintenance, power supply verification operation and maintenance and power supply activation operation and maintenance based on the service function module of the operation and maintenance auxiliary system, can assist the power distribution network operators to carry out intelligent operation and maintenance work of the backup power supply, reduce the powerless consumption of operation and maintenance manpower, improve the service efficiency and the service life of the backup power supply, and achieve the aims of reducing the dangerous hidden danger of operation of the power distribution automation terminal and improving the operation safety of the power distribution network.
Description
Technical Field
The invention belongs to the technical field of operation management and maintenance of a power distribution network, and particularly relates to a digital operation and maintenance auxiliary device, system and method for a backup power supply of a power distribution automation terminal.
Background
The construction process of the digital power grid is the digitization, intellectualization and internetization process of the traditional power grid, wherein the construction of the digital power grid of the power distribution network mainly applies various advanced scientific technologies to the optimization upgrading, management, diagnosis and early warning of distribution network automation equipment, so that the technical level of distribution network operation and maintenance production is improved, and more economic benefits are generated for the power distribution network. In the daily operation of the distribution automation system, a storage battery of a terminal device (such as an FTU, a DTU and a communication base station) of the distribution automation system provides power for the normal operation and the switching operation of the terminal device, and the storage battery is used as a switching operation power supply in fault isolation and recovery in the operation process of the system, particularly after an accident power failure, and the reliability of the performance and the working state of the storage battery plays a very important role in the reliable operation of the whole distribution system and the shortening of the fault recovery time.
At present, the following factors affect the reliability and the service life of a backup power system (mainly, a storage battery + a power conversion module) of a distribution automation device: 1. the device is operated in outdoor severe natural environment for a long time, the manual operation frequency is difficult to guarantee, the operation information of the device is lost, and the service life cannot be predicted; 2. a power supply conversion module in a power supply system mainly adopts an analog electronic technology, and when a fault occurs under the influence of a severe environment, equipment loses an early warning function easily due to various interferences, so that a further fault event is caused; 3. as a redundant power supply of a power supply system of the distribution automation equipment, the running state of the storage battery is closely related to the management charging and discharging strategy of the power supply system, the attention to the power supply system of the distribution automation equipment is deepened, the running reliability of the distribution automation equipment is favorably improved, and the loss of various equipment and electric energy caused by power failure to the distribution automation system is reduced.
Disclosure of Invention
In view of this, the present invention aims to solve the problem that the reliability and the service life of the backup power supply of the current distribution automation terminal are affected during operation.
In order to solve the technical problems, the invention provides the following technical scheme:
in a first aspect, the present invention provides a digital operation and maintenance auxiliary device for a backup power supply of a distribution automation terminal, including: the system comprises a main control unit, an acquisition monitoring unit, a matched wire and a communication module;
the main control unit comprises a device operation and maintenance module, a power supply nuclear capacity operation and maintenance module and a power supply activation operation and maintenance module and is used for respectively operating and maintaining the device and the backup power supply according to a system instruction;
the acquisition monitoring unit is used for acquiring the operation information of the device and the backup power supply so that the main control unit can carry out operation and maintenance work according to the operation information;
the communication module establishes communication connection with the master station system in a wireless communication mode and is used for acquiring system instructions;
the main control unit is connected with the acquisition monitoring unit through a matched wire.
Furthermore, in the main control unit, the power supply capacity checking operation and maintenance module and the power supply activation operation and maintenance module are specifically a storage battery intelligent capacity checking device and a storage battery intelligent activation instrument.
Further, the communication module comprises a 4G wireless communication chip and a low-power wireless LoRa communication chip.
Further, the method also comprises the following steps: and the standby power supply is used for supplying the main control unit to normally operate for a plurality of times after the main power supply of the auxiliary device is powered off.
In a second aspect, the invention provides a distribution automation terminal backup power digital operation and maintenance auxiliary system, which operates on the distribution automation terminal backup power digital operation and maintenance auxiliary device as in the first aspect, and is characterized by comprising: the system configures a service function module;
the service functions in the system configuration service function module comprise data acquisition, communication overview, historical query, system interaction, power activation, power capacity checking and intelligent operation and maintenance;
the data acquisition comprises the steps of acquiring the voltage, the current, the internal resistance, the temperature, the charging time, the discharging time, the charging times and the discharging times of a single battery in a backup power supply, and acquiring the voltage, the current and a communication signal of a backup power supply digital operation and maintenance auxiliary device of the distribution automation terminal;
the communication overview is a list form showing the communication signal strength of the digital operation and maintenance auxiliary device of the backup power supply of the power distribution automation terminal under the jurisdiction of the user authority;
the historical query is to query field data required by a user in a database of the master station system;
the system interaction is that the operation and maintenance auxiliary system performs data interaction with the distribution automation system, the situation awareness system and the meteorological system;
the power supply activation is to perform charging and discharging operations for a certain cycle number on a backup power supply of a distribution automation terminal with an activation operation and maintenance identifier administered by a user authority so as to activate active chemical substances of a battery plate in the backup power supply, which is out of work, and further activate the battery so as to activate the capacity of the battery in which the battery is out of work;
the power supply capacity checking is to perform discharging operation with a certain discharging depth on a backup power supply of the distribution automation terminal with a capacity checking operation and maintenance identification under the jurisdiction of a user, then perform charging operation, regularly record information such as voltage, current, battery residual capacity, discharging time and charging time in the whole process during the period, and finally form a capacity checking result for the backup power supply;
the intelligent operation and maintenance comprises the steps that when a backup power supply of a power distribution automation terminal under the jurisdiction of a user authority does not perform power supply capacity checking operation for a certain time, a first operation and maintenance strategy is generated by combining the weather condition, the load peak-to-valley ratio and the power distribution network situation sensing result in the area where the backup power supply is located; when the backup power supply of the power distribution automation terminal under the jurisdiction of the user authority has an activation operation and maintenance identifier, generating a second operation and maintenance strategy by combining the weather condition, the load peak-valley ratio and the power distribution network situation sensing result in the area; and when the digital operation and maintenance auxiliary device of the power distribution automation terminal backup power supply is abnormal in operation data or is disconnected, generating a third operation and maintenance strategy.
Further, the method also comprises the following steps: the system configuration management function module comprises user authority management, safe login management and system version management;
the user authority management is the management of the addition, modification, deletion and authority level setting of the user account password;
the safe login management is that a user logs in by inputting an account password or a dynamic face recognition mode, and the login is successful only through dynamic face recognition verification when the remote login, power activation and power verification are carried out;
the system version management is a software version for managing the system version and managing the digital operation and maintenance auxiliary device of the backup power supply of each distribution automation terminal according to the authority.
In a third aspect, the present invention provides a digital operation and maintenance method for a backup power supply of a distribution automation terminal, which is suitable for the digital operation and maintenance auxiliary system for the backup power supply of the distribution automation terminal in the second aspect, and is characterized by comprising: the device operation and maintenance method specifically comprises the following steps:
setting voltage, current and communication intensity thresholds of a back-up power supply digital operation and maintenance auxiliary device of the distribution automation terminal in an operation and maintenance system;
continuously judging whether the voltage, the current and the communication intensity of the digital operation and maintenance auxiliary device of the backup power supply of the distribution automation terminal exceed threshold values for 2 times, and judging the interval to be 30 minutes;
if so, giving a corresponding operation and maintenance identifier to the auxiliary device, storing the voltage, current and communication intensity information of the auxiliary device as operation and maintenance strategy contents, and uploading the operation and maintenance strategy contents to an operation and maintenance system.
Further, the method also comprises the following steps: the power supply nuclear capacity operation and maintenance method specifically comprises the following steps:
a kernel capacity plan is formulated by the operation and maintenance system according to the running time of the backup power supply, specifically, the running time is less than 5 years, the kernel capacity is once in 1 year, the running time is 5 years and more, and the kernel capacity is once in half year; meanwhile, setting the voltage, current, temperature, capacity and internal resistance threshold of the backup power supply;
planning a capacity checking time on the day, judging the weather condition of a power distribution network where a backup power supply for preparing the capacity checking is located, if the weather condition is rainy day, not checking the capacity on the day, and if not, giving a capacity checking operation and maintenance identifier to the backup power supply and performing subsequent steps;
acquiring a situation sensing result of a power distribution network where a backup power supply is located and having a nuclear capacity operation and maintenance identification, performing power supply nuclear capacity operation when the situation sensing result shows that the fault probability of the power distribution network is low and the current load peak-valley ratio value is lower than 1.2 by combining the load peak-valley ratio value, and regularly recording the voltage, current, battery residual capacity, discharge time, charge time, internal resistance and other information of the whole power supply nuclear capacity process;
and comparing the information of voltage, current, residual capacity of the battery, discharge time, charging time, internal resistance and the like in the capacity checking process with the corresponding threshold, if the information exceeds the threshold, giving an activation operation and maintenance identifier, and uploading the relevant information serving as operation and maintenance strategy content to an operation and maintenance system.
Further, the method also comprises the following steps: the power activation operation and maintenance method specifically comprises the following steps:
acquiring backup power supply information of a power distribution automation terminal with an activated operation and maintenance identifier in an operation and maintenance system, and setting the charging and discharging times to be 10 times by default;
acquiring a situation sensing result of a power distribution network where a backup power source with an activation operation and maintenance identification is located, carrying out power source activation operation when the situation sensing result shows that the power distribution network has low fault probability and the current load peak-valley ratio value is lower than 1.2 by combining the load peak-valley ratio value, and regularly recording the information of voltage, current, battery residual capacity, discharge time, charge time, internal resistance and the like in the whole power source activation process;
and calculating the change rate of the residual capacity of the battery before and after the activation operation of the power supply, and uploading the result to an operation and maintenance system.
In summary, the invention provides a digital operation and maintenance auxiliary device, system and method for a backup power supply of a distribution automation terminal, the auxiliary device provided by the invention performs active operation and maintenance operation through a main control module, and respectively realizes device operation and maintenance, power supply capacity operation and maintenance and power supply activation operation and maintenance based on a service function module of the operation and maintenance auxiliary system, so that power distribution network operators can be assisted to carry out intelligent operation and maintenance work of the backup power supply, the powerless consumption of operation and maintenance manpower is reduced, the service efficiency and service life of the backup power supply are improved, and the aims of reducing the dangerous hidden danger of the operation of the distribution automation terminal and improving the operation safety of the power distribution network are fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a topology structural diagram of a digital operation and maintenance auxiliary device of a backup power supply of a distribution automation terminal according to an embodiment of the present invention;
fig. 2 is an external schematic view of a digital operation and maintenance auxiliary device of a backup power supply of a distribution automation terminal according to an embodiment of the present invention;
fig. 3 is a functional structure diagram of a digital operation and maintenance auxiliary system of a backup power supply of a distribution automation terminal according to an embodiment of the present invention.
In the drawings: 1-OLED display screen, 2-confirmation button, 3-rotation adjusting button, 4-camera module, 5-direction function button and 6-communication module.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The construction process of the digital power grid is the digitization, intellectualization and internetization process of the traditional power grid, wherein the construction of the digital power grid of the power distribution network mainly applies various advanced scientific technologies to the optimization upgrading, management, diagnosis and early warning of distribution network automation equipment, so that the technical level of distribution network operation and maintenance production is improved, and more economic benefits are generated for the power distribution network. In the daily operation of the distribution automation system, a storage battery of a terminal device (such as an FTU, a DTU and a communication base station) of the distribution automation system provides power for the normal operation and the switching operation of the terminal device, and the storage battery is used as a switching operation power supply in fault isolation and recovery in the operation process of the system, particularly after an accident power failure, and the reliability of the performance and the working state of the storage battery plays a very important role in the reliable operation of the whole distribution system and the shortening of the fault recovery time.
At present, the following factors affect the reliability and service life of a backup power system (mainly a storage battery + a power conversion module) of a distribution automation device: 1. the device is operated in outdoor severe natural environment for a long time, the manual operation frequency is difficult to guarantee, the operation information of the device is lost, and the service life cannot be predicted; 2. a power supply conversion module in a power supply system mainly adopts an analog electronic technology, and when a fault occurs under the influence of a severe environment, equipment easily loses an early warning function due to various interferences, so that a further fault event is caused; 3. as a redundant power supply of a power supply system of the distribution automation equipment, the running state of the storage battery is closely related to the management charging and discharging strategy of the power supply system, the attention to the power supply system of the distribution automation equipment is deepened, the running reliability of the distribution automation equipment is favorably improved, and the loss of various equipment and electric energy caused by power failure to the distribution automation system is reduced.
The invention provides a digital operation and maintenance auxiliary device, a digital operation and maintenance auxiliary system and a digital operation and maintenance auxiliary method for a backup power supply of a distribution automation terminal, and aims to solve the problem that the reliability and the service life of the backup power supply system of the existing distribution automation equipment are influenced during operation.
The following describes an embodiment of a backup power digital operation and maintenance auxiliary device of a distribution automation terminal according to the present invention in detail.
Referring to fig. 1, the embodiment provides a digital operation and maintenance auxiliary device for a backup power source of a distribution automation terminal, including: the system comprises a main control unit, a collection monitoring unit, a matched wire and a communication module.
In this embodiment, the main control unit includes an apparatus operation and maintenance module, a power supply core operation and maintenance module, and a power supply activation operation and maintenance module, and is configured to perform operation and maintenance on the apparatus and the backup power supply according to the system instruction.
In an alternative embodiment, the main control unit may be provided with a switching power supply module, an OLED display screen module, a storage module, a first interface module, a control module, a backup power supply, a communication module, an activation module, a kernel capacity module, a cooling fan and a main control unit casing, and each part is adaptively installed on the main control unit casing. The OLED display screen module can be used for displaying the state of the device and the state of the storage battery, specifically comprises the capacity, terminal voltage, current, running temperature and the like of the storage battery, and key parameters such as the charging and discharging state, the charging and discharging temperature of the battery, the internal resistance of the battery and the like, and the service life of the power supply system is predicted in advance. As shown in fig. 2, fig. 2a is an external view of the main control unit, and fig. 2b is a front view of the main control unit. The main control unit shell is provided with an OLED display screen 1, a confirmation button 2, a rotary adjusting button 3, a camera module 4, a direction function button 5 and a communication module 6. Each button is used for operating the auxiliary device to realize a corresponding function.
The activation module is an intelligent activation instrument for the storage battery; the nuclear capacity module is an intelligent storage battery nuclear capacity device, and adopts a DC/DC boosting charge-discharge nuclear capacity device.
In this embodiment, the collection monitoring unit is used to collect the operation information of the device and the backup power supply, so that the main control unit performs operation and maintenance according to the operation information.
The acquisition monitoring unit can be provided with a data acquisition module, a memory, a power taking module and a second interface module.
In this embodiment, the communication module establishes a communication connection with the master station system in a wireless communication manner, and is used to acquire a system instruction.
In practical implementation, the communication module is provided with a 4G wireless communication chip and a low-power wireless LoRa communication chip.
In this embodiment, the main control unit is connected with the acquisition and monitoring unit through a matching wire.
In addition, the auxiliary device of this embodiment can also set up stand-by power supply, and this stand-by power supply is the lithium cell, requires to support to supply the main control unit normal operating to be no less than 4 hours after the main power source has a power failure.
The first interface module of the main control unit is connected with the second interface module of the acquisition and monitoring unit, and the acquisition and monitoring unit acquires data required for operation and maintenance through the data acquisition module and the power acquisition module and stores the data in the memory in real time. And the main control unit acquires the data required by operation and maintenance from the acquisition monitoring unit and stores the data. The OLED display screen module acquires the state information to be displayed from the storage module so as to be conveniently viewed by a worker. In addition, the main control unit is externally connected with an AC22V power supply through the switching power supply module, and the activation module and the kernel-capacitor module are respectively connected with the storage module so as to be convenient for operation and maintenance under the control of the control module. The heat dissipation fan can keep the device in a better working state.
The above is a detailed description of an embodiment of the digital operation and maintenance auxiliary device for the backup power source of the distribution automation terminal provided by the present invention, and the following is a detailed description of an embodiment of the digital operation and maintenance auxiliary system for the backup power source of the distribution automation terminal provided by the present invention.
Referring to fig. 3, the present embodiment provides a digital operation and maintenance auxiliary system for a backup power source of a distribution automation terminal, including: a system configuration service function module and a system configuration management function module.
In this embodiment, the service functions in the service function module of system configuration include data collection, communication profile, history inquiry, system interaction, power activation, power verification, and intelligent operation and maintenance.
The data acquisition is to acquire the voltage, the current, the internal resistance, the temperature, the charging time, the discharging time, the charging times and the discharging times of a single battery in the backup power supply, and the voltage, the current and the communication signals of the backup power supply digital operation and maintenance auxiliary device of the distribution automation terminal.
The communication overview is a list form showing the communication signal strength of the digital operation and maintenance auxiliary device of the backup power supply of the power distribution automation terminal under the jurisdiction of the user authority.
The historical query is to query the field data needed by the user in the database of the master station system.
The system interaction is data interaction between the operation and maintenance auxiliary system and the power distribution automation system, the situation perception system and the meteorological system.
The power supply activation is to perform charging and discharging operations under certain cycle times on a backup power supply of the distribution automation terminal with an activation operation and maintenance identifier under the jurisdiction of a user authority so as to activate the active chemical substances with failed battery pole plates in the backup power supply, further activate the battery and achieve the effect of activating the failed capacity of the battery.
The power supply capacity checking is to perform discharging operation with a certain discharging depth on a backup power supply of the distribution automation terminal with the capacity checking operation and maintenance identification under the jurisdiction of a user, then perform charging operation, periodically record the information of voltage, current, battery residual capacity, discharging time, charging time and the like in the whole process, and finally form a capacity checking result for the backup power supply.
The intelligent operation and maintenance comprises the steps that when a backup power supply of a distribution automation terminal under the jurisdiction of a user authority exceeds a certain time and power supply capacity checking operation is not carried out, a first operation and maintenance strategy is generated by combining the weather condition, the load peak-to-valley ratio and the distribution network situation sensing result in the area where the backup power supply is located; when the backup power supply of the power distribution automation terminal under the jurisdiction of the user authority has an activation operation and maintenance identifier, generating a second operation and maintenance strategy by combining the weather condition, the load peak-valley ratio and the power distribution network situation sensing result in the area; and when the digital operation and maintenance auxiliary device of the power distribution automation terminal backup power supply is abnormal in operation data or is disconnected, generating a third operation and maintenance strategy.
In this embodiment, the system configuration management function module includes user right management, secure login management, and system version management.
The user authority management is management of user account password addition, modification, deletion and authority level setting.
The safe login management is that a user logs in by inputting an account password or a dynamic face recognition mode, and the login can be successful only through dynamic face recognition verification when the operations of remote login, power activation and power verification are carried out.
The system version management is a software version for managing the system version and managing the digital operation and maintenance auxiliary device of the backup power supply of each distribution automation terminal according to the authority.
The above is a detailed description of an embodiment of the digital operation and maintenance auxiliary system for the backup power of the distribution automation terminal, and the following is a detailed description of an embodiment of the digital operation and maintenance method for the backup power of the distribution automation terminal.
The embodiment provides a digital operation and maintenance method for a backup power supply of a distribution automation terminal, which comprises the following steps: the device operation and maintenance method, the power supply capacity operation and maintenance method and the power supply activation operation and maintenance method.
In this embodiment, the device operation and maintenance method specifically includes:
s11: setting voltage, current and communication intensity threshold values of a back-up power supply digital operation and maintenance auxiliary device of a distribution automation terminal in an operation and maintenance system;
s12: continuously judging whether the voltage, the current and the communication intensity of the digital operation and maintenance auxiliary device of the power distribution automation terminal backup power supply exceed threshold values for 2 times, and judging the interval to be 30 minutes;
s13: if yes, endowing the auxiliary device with a corresponding operation and maintenance identifier, storing the voltage, current and communication intensity information of the auxiliary device as operation and maintenance strategy contents, and uploading the operation and maintenance strategy contents to an operation and maintenance system.
The power supply nuclear capacity operation and maintenance method specifically comprises the following steps:
s21: a capacity checking plan is made in the operation and maintenance system according to the running time of the backup power supply, specifically, the running time is less than 5 years, the capacity checking is carried out once in 1 year, the running time is 5 years and more, and the capacity checking is carried out once in half year; meanwhile, setting the voltage, current, temperature, capacity and internal resistance threshold of the backup power supply;
s22: planning a capacity checking time on the day, judging the weather condition of a power distribution network where a backup power supply for preparing the capacity checking is located, if the weather condition is rainy day, not checking the capacity on the day, and if not, giving a capacity checking operation and maintenance identifier to the backup power supply and performing subsequent steps;
s23: acquiring a situation sensing result of a power distribution network where a backup power supply is located and having a nuclear capacity operation and maintenance identification, performing power supply nuclear capacity operation when the situation sensing result shows that the fault probability of the power distribution network is low and the current load peak-valley ratio value is lower than 1.2 by combining the load peak-valley ratio value, and regularly recording the voltage, current, battery residual capacity, discharge time, charge time, internal resistance and other information of the whole power supply nuclear capacity process;
s24: comparing the information of voltage, current, battery residual capacity, discharge time, charge time, internal resistance and the like in the process of capacity checking with corresponding threshold values, if the information exceeds the threshold values, giving an activation operation and maintenance identifier, and uploading the related information serving as operation and maintenance strategy contents to an operation and maintenance system
The power activation operation and maintenance method specifically comprises the following steps:
s31: acquiring backup power supply information of a power distribution automation terminal with an activated operation and maintenance identifier in an operation and maintenance system, and setting the charging and discharging times to be 10 times by default;
s32: acquiring a situation sensing result of a power distribution network where a backup power source with an activation operation and maintenance identification is located, carrying out power source activation operation when the situation sensing result shows that the power distribution network has low fault probability and the current load peak-valley ratio value is lower than 1.2 by combining the load peak-valley ratio value, and regularly recording the information of voltage, current, battery residual capacity, discharge time, charge time, internal resistance and the like in the whole power source activation process;
s33: and calculating the change rate of the residual capacity of the battery before and after the activation operation of the power supply, and uploading the result to an operation and maintenance system.
The invention provides a digital operation and maintenance auxiliary device, system and method for a backup power supply of a power distribution automation terminal. Specifically, by means of the state of the OLED display device, a field operation and maintenance worker can visually know key parameters such as the state (including capacity, terminal voltage, current, operating temperature and the like) of a storage battery, the charging and discharging state, the charging and discharging temperature of the storage battery, the internal resistance of the storage battery and the like in a routing inspection process, and the service life of a power supply system is predicted in advance; remote communication monitoring is realized through an LoRa or 2/4G mobile communication mode, and the state of a power supply system of the distribution automation equipment can be known through a background master station system, so that the operation and maintenance process of the power supply system is changed from passive operation and maintenance to active operation and maintenance; the battery is intelligently activated at regular intervals by controlling a relay/optocoupler; the capacity of the battery can be verified through remote control, the service condition of the battery can be mastered at any time, the problem of insufficient power supply of the distribution automation equipment is prevented, and a backup power supply replacement schedule is formed.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. Distribution automation terminal back-up source digit fortune dimension auxiliary device, its characterized in that includes: the system comprises a main control unit, an acquisition monitoring unit, a matched wire and a communication module;
the main control unit comprises a device operation and maintenance module, a power supply kernel operation and maintenance module and a power supply activation operation and maintenance module, and is used for respectively operating and maintaining the device and the backup power supply according to a system instruction;
the acquisition monitoring unit is used for acquiring operation information of the device and the backup power supply so that the main control unit can carry out operation and maintenance work according to the operation information;
the communication module establishes communication connection with the master station system in a wireless communication mode and is used for acquiring the system instruction;
the main control unit is connected with the acquisition monitoring unit through the matching wire.
2. The distribution automation terminal backup power supply digital operation and maintenance auxiliary device according to claim 1, wherein in the main control unit, the power supply capacity operation and maintenance module and the power supply activation operation and maintenance module are specifically a storage battery intelligent capacity checking device and a storage battery intelligent activation instrument.
3. The distribution automation terminal backup power digital operation and maintenance auxiliary device according to claim 1, wherein the communication module comprises a 4G wireless communication chip and a low power wireless LoRa communication chip.
4. The distribution automation terminal backup power digital operation and maintenance auxiliary device of claim 1 further comprising: and the standby power supply is used for supplying the main control unit to normally run for a plurality of times after the main power supply of the auxiliary device is powered off.
5. Distribution automation terminal backup power digital operation and maintenance auxiliary system operating in the distribution automation terminal backup power digital operation and maintenance auxiliary device according to any of claims 1-4, characterized by comprising: a system configuration service function module;
the service functions in the system configuration service function module comprise data acquisition, communication overview, historical query, system interaction, power activation, power capacity checking and intelligent operation and maintenance;
the data acquisition is to acquire the voltage, the current, the internal resistance, the temperature, the charging time, the discharging time, the charging times and the discharging times of a single battery in the backup power supply, and the voltage, the current and the communication signals of the backup power supply digital operation and maintenance auxiliary device of the distribution automation terminal;
the communication profile is used for showing the communication signal strength of the digital operation and maintenance auxiliary device of the backup power supply of the power distribution automation terminal under the jurisdiction of a user in a list form;
the historical query is to query field data required by a user in a database of the master station system;
the system interaction is data interaction between the operation and maintenance auxiliary system and the distribution automation system, the situation awareness system and the meteorological system;
the power supply is activated by performing charging and discharging operations for a backup power supply of a distribution automation terminal with an activation operation and maintenance identifier under the jurisdiction of a user authority for a certain number of cycles so as to activate active chemical substances of a battery plate in the backup power supply which is invalid, so that the battery is activated, and the effect of activating the capacity of the invalid part of the battery is achieved;
the power supply capacity checking is to perform discharging operation with a certain discharging depth on a backup power supply of a power distribution automation terminal with a capacity checking operation and maintenance identification under the jurisdiction of a user, then perform charging operation, regularly record information such as voltage, current, battery residual capacity, discharging time and charging time in the whole process during the period, and finally form a capacity checking result for the backup power supply;
the intelligent operation and maintenance comprises the steps that when a backup power supply of a power distribution automation terminal under the jurisdiction of a user right does not perform power supply capacity checking operation for a certain time, a first operation and maintenance strategy is generated by combining the weather condition, the load peak-to-valley ratio and the power distribution network situation sensing result in the area where the backup power supply is located; when an activated operation and maintenance identifier appears in a backup power supply of the distribution automation terminal governed by the user authority, generating a second operation and maintenance strategy by combining the weather condition, the load peak-valley ratio and the distribution network situation sensing result in the region where the backup power supply is located; and when the digital operation and maintenance auxiliary device of the power distribution automation terminal backup power supply is abnormal in operation data or is disconnected, generating a third operation and maintenance strategy.
6. The distribution automation terminal backup power digital operation and maintenance auxiliary system of claim 5 further comprising: the system configuration management function module comprises user authority management, safe login management and system version management;
the user authority management is the management of adding, modifying and deleting user account passwords and setting authority levels;
the safe login management is that a user logs in by inputting an account password or a dynamic face recognition mode, and the login can be successful only through dynamic face recognition verification when the operations of remote login, power activation and power capacity verification are carried out;
the system version management is a management system version and a software version of each power distribution automation terminal backup power supply digitalized operation and maintenance auxiliary device according to authority management.
7. The digital operation and maintenance method for the backup power supply of the distribution automation terminal is applicable to the digital operation and maintenance auxiliary system for the backup power supply of the distribution automation terminal as claimed in claim 5 or 6, and is characterized by comprising the following steps: the device operation and maintenance method specifically comprises the following steps:
setting voltage, current and communication intensity threshold values of the digital operation and maintenance auxiliary device of the backup power supply of the distribution automation terminal in an operation and maintenance system;
continuously judging whether the voltage, the current and the communication intensity of the digital operation and maintenance auxiliary device of the backup power supply of the distribution automation terminal exceed threshold values for 2 times, and judging the interval to be 30 minutes;
if yes, endowing the auxiliary device with a corresponding operation and maintenance identifier, storing the voltage, current and communication intensity information of the auxiliary device as operation and maintenance strategy contents, and uploading the operation and maintenance strategy contents to an operation and maintenance system.
8. The distribution automation terminal backup power supply digital operation and maintenance method according to claim 7, further comprising: the power supply nuclear capacity operation and maintenance method specifically comprises the following steps:
a capacity checking plan is made in the operation and maintenance system according to the running time of the backup power supply, specifically, the running time is less than 5 years, the capacity checking is carried out once in 1 year, the running time is 5 years or more, and the capacity checking is carried out once in half year; meanwhile, setting the voltage, current, temperature, capacity and internal resistance threshold of the backup power supply;
planning the checking time on the same day, judging the weather condition of a power distribution network where a backup power supply for checking the capacity is located, if the weather condition is rainy day, not checking the capacity on the same day, and if the weather condition is not rainy day, giving a checking capacity operation and maintenance identifier to the backup power supply and performing subsequent steps;
acquiring a situation sensing result of a power distribution network with a nuclear capacity operation and maintenance identification backup power source, combining the magnitude of a load peak-to-valley ratio value, performing power source nuclear capacity operation when the situation sensing result shows that the fault probability of the power distribution network is low and the current load peak-to-valley ratio value is lower than 1.2, and regularly recording the information of voltage, current, battery residual capacity, discharge time, charge time, internal resistance and the like of the whole power source nuclear capacity process;
and comparing the information of voltage, current, residual capacity of the battery, discharge time, charging time, internal resistance and the like in the capacity checking process with the corresponding threshold, if the information exceeds the threshold, giving an activation operation and maintenance identifier, and uploading the relevant information serving as operation and maintenance strategy content to an operation and maintenance system.
9. The distribution automation terminal backup power digital operation and maintenance method of claim 8 further comprising: the power activation operation and maintenance method specifically comprises the following steps:
acquiring backup power supply information of a power distribution automation terminal with an activated operation and maintenance identifier in an operation and maintenance system, and setting the charging and discharging times to be 10 times by default;
acquiring a situation sensing result of a power distribution network where a backup power source with an activation operation and maintenance identification is located, carrying out power source activation operation when the situation sensing result shows that the power distribution network has low fault probability and the current load peak-valley ratio value is lower than 1.2 by combining the load peak-valley ratio value, and regularly recording the information of voltage, current, battery residual capacity, discharge time, charge time, internal resistance and the like in the whole power source activation process;
and calculating the change rate of the residual capacity of the battery before and after the activation operation of the power supply, and uploading the result to an operation and maintenance system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115712069A (en) * | 2022-12-02 | 2023-02-24 | 深圳市泰昂能源科技股份有限公司 | Battery management system for distribution network power supply and intelligent distribution network power supply module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115712069A (en) * | 2022-12-02 | 2023-02-24 | 深圳市泰昂能源科技股份有限公司 | Battery management system for distribution network power supply and intelligent distribution network power supply module |
| CN115712069B (en) * | 2022-12-02 | 2024-02-23 | 深圳市泰昂能源科技股份有限公司 | Battery management system for distribution network power supply and intelligent distribution network power supply module |
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