CN112134352A - Intelligent hidden danger analysis system and method for transformer substation communication power supply - Google Patents
Intelligent hidden danger analysis system and method for transformer substation communication power supply Download PDFInfo
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- H—ELECTRICITY
- 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
- H02J13/00002—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 monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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- H—ELECTRICITY
- 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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- 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
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- H—ELECTRICITY
- 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
- H02J13/00028—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 involving the use of Internet protocols
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- H—ELECTRICITY
- 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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
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Abstract
The invention belongs to the field of transformer substation communication power supply analysis, and provides a system and a method for intelligently analyzing hidden dangers of a transformer substation communication power supply. Wherein, communication power supply's of transformer substation hidden danger intelligent analysis system includes: the protocol conversion module is used for converting a communication protocol of the communication power supply so as to acquire real-time operation information of the communication power supply; the interconnection interface module is used for communication between the power environment monitoring system and the fault diagnosis and analysis module; the fault diagnosis analysis module is used for calculating the capacity state of the rectification module, the current equalizing state of the rectification module, the fuse capacity state and the cable capacity state based on the real-time running information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
Description
Technical Field
The invention belongs to the field of transformer substation communication power supply analysis, and particularly relates to a system and a method for intelligently analyzing hidden dangers of a transformer substation communication power supply.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Due to the communication system faults, serious events such as complete interruption of transformer substation communication, outage of a machine room and the like are all caused by communication power supply faults, and reliable operation of a communication power supply becomes a core factor influencing safe operation of a power grid. In the existing dynamic loop monitoring system, communication power supply information and alarms can be acquired and displayed through means of remote measurement, remote signaling and the like, but the inventor finds that fault judgment and hidden danger threshold value analysis still need to be realized manually, the workload is large, judgment errors are easy to occur, and the timely positioning and analysis of hidden dangers and faults are influenced; in addition, the inventor also finds that the conventional dynamic environment monitoring system is difficult to realize online monitoring on static physical quantities such as the idle opening of a communication power supply, the capacity of a fuse and the like, and is insensitive to the variation gradually deviating from the normal range.
Disclosure of Invention
In order to solve the problems, the invention provides an intelligent analysis system and an intelligent analysis method for hidden dangers of a transformer substation communication power supply, which can realize long-time and multi-angle data analysis of each set of power supply and enable operation and maintenance work to be changed from experience standards to data standards based on a communication power supply health state evaluation process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an intelligent hidden danger analysis system for a substation communication power supply.
In one or more embodiments, a system for intelligently analyzing hidden dangers of a substation communication power supply includes:
the protocol conversion module is used for converting a communication protocol of the communication power supply so as to acquire real-time operation information of the communication power supply;
the interconnection interface module is used for communication between the power environment monitoring system and the fault diagnosis and analysis module;
the fault diagnosis analysis module is used for calculating the capacity state of the rectification module, the current equalizing state of the rectification module, the fuse capacity state and the cable capacity state based on the real-time running information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
The second aspect of the invention provides a working method of a hidden danger intelligent analysis system of a transformer substation communication power supply.
In one or more embodiments, an operating method of an intelligent hidden danger analysis system for a substation communication power supply includes:
converting a communication protocol of the communication power supply to acquire real-time operation information of the communication power supply;
acquiring power environment information uploaded by a power environment monitoring system;
calculating the capacity state of a rectifier module, the current equalizing state of the rectifier module, the fuse capacity state and the cable capacity state based on the real-time operation information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
Compared with the prior art, the invention has the beneficial effects that:
the communication between the communication power supplies of different manufacturers and different models is realized based on the protocol conversion module, and the communication between the power environment monitoring system and the fault diagnosis analysis module is realized by utilizing the interconnection interface module, so that the hidden danger intelligent analysis system of the communication power supply of the transformer substation has compatibility with the communication power supplies of different types and the power environment monitoring system;
the method and the device calculate the capacity state of the rectifier module, the current sharing state of the rectifier module, the fuse capacity state and the cable capacity state based on the real-time operation information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply, further judge the health state of the communication power supply according to the fusion of all the sub-health degrees, realize mathematical modeling of the communication power supply, diagnose the health state of the communication power supply by utilizing the dynamic and static data of the existing dynamic ring monitoring system through long-time, big data and multi-dimensional data analysis, achieve the purposes of hidden danger judgment, critical early warning and operation state evaluation, provide the standard of power supply safe operation and the reference of maintenance requirements for operation and maintenance personnel, and provide powerful support for lean management.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a general architecture diagram of a hidden danger intelligent analysis system of a substation communication power supply according to an embodiment of the present invention;
fig. 2 is a network architecture diagram of a hidden danger intelligent analysis system of a substation communication power supply according to an embodiment of the present invention;
fig. 3 is a technical architecture diagram of a hidden danger intelligent analysis system of a substation communication power supply according to an embodiment of the present invention;
FIG. 4 is a schematic system top-down view of an embodiment of the present invention;
FIG. 5 is a diagram illustrating shared resource acquisition according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a real-time data query according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of historical data queries in accordance with an embodiment of the invention;
FIG. 8 is a schematic diagram of real-time alert pushing according to an embodiment of the present invention;
fig. 9 is a diagram showing an intelligent hidden danger analysis system of a substation communication power supply according to an embodiment of the present invention;
fig. 10 is a flowchart of the work of the intelligent hidden danger analysis system for the substation communication power supply according to the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Referring to fig. 1, the intelligent analysis system for hidden dangers of a substation communication power supply in the embodiment includes a protocol conversion module, an interconnection interface module, and a fault diagnosis analysis module.
The protocol conversion module, the interconnection interface module and the fault diagnosis analysis module are arranged in the service layer. The service layer is a core layer of the hidden danger intelligent analysis system of the transformer substation communication power supply and provides core service support for the whole system. And the application support of system data analysis is realized by utilizing software and hardware resources provided by the platform.
Besides the protocol conversion module, the interconnection interface module and the fault diagnosis analysis module, the service layer also comprises a data preprocessing module, a storage module and a system service support module.
Wherein, the data preprocessing module is used for: reading EXCEL documents preset by a user, acquiring the fuse capacity and the cable wire diameter of each communication power supply, and providing data support for hidden danger diagnosis and analysis; analyzing and acquiring real-time data and historical data of a communication power supply through an interconnection interface, and providing data support for a fault diagnosis module; aiming at the condition that the current value is 0 or suddenly changed possibly caused by equipment failure, external condition influence and the like, the numerical value which is not in accordance with the actual condition is preprocessed, and the data used in the later period is ensured to be real and available; according to the logic operation of the total current output by the switching power supply rectifying module, the load current and the current of the storage battery pack and the current equalizing principle of the rectifying module, the information such as the load current, the voltage, the current of the storage battery pack, the current of the rectifying module, the module running state information, historical data and the like is tracked on line through the collected real-time data.
The storage module is used for storing resource information of the communication power supply, fuse capacity information of the communication power supply, linkage strategies of various associated data, historical events, alarm information and the like. Because the original data volume of the communication power supply is larger, the communication power supply has no local storage, and when the system needs to access historical resource data, a mode of calling a related interface of the dynamic environment monitoring system for access is adopted. The system occupies small local storage space (10G), and the possibility of insufficient space does not exist. The application layer provides a historical data import and export function, and can ensure the integrity and the safety of the historical data.
The communication power supply equipment and the dynamic environment monitoring system are arranged on the front-end data layer, and provide a data source support for real-time analysis for the whole system. For communication power supplies of different manufacturers and different types, acquiring real-time data of all the communication power supplies in a communication power supply protocol conversion mode; and for the dynamic environment monitoring system, a private protocol is adopted to be interconnected with the dynamic environment monitoring system, and all real-time data and alarm data are shared.
The application display module is arranged in an application layer, the application layer provides corresponding human-computer interaction for a user, and the user can monitor various detection alarm states, including: the method comprises the steps of capacity detection and early warning of a communication power supply rectifier module, current sharing detection and early warning of the communication power supply rectifier module, capacity detection and early warning of a communication power supply fuse wire, total current and total voltage floating analysis and warning of a communication power supply, and meanwhile, convenient and fast basic application including real-time monitoring, warning management, linkage, report forms and the like is achieved.
As shown in fig. 9, the display is divided into 3 levels of normal, reasonable and hidden danger, each color module is used for displaying the analysis data, and the power stability can display a plurality of data charts. The display window is required to be movable, and multi-window opening can be realized at the same time.
The network architecture of the intelligent hidden danger analysis system of the substation communication power supply matched with the system in fig. 1 mainly comprises a front-end data source, a server and an application end, as shown in fig. 2. At a data source end, the communication power supply equipment and the power environment monitoring system are accessed to the communication power supply fault diagnosis and analysis system through an IP network; the server side is composed of all acquisition and analysis modules and comprises data interface service, data preprocessing service, communication power failure diagnosis and analysis service and the like, and the application side is responsible for displaying analysis results.
The implementation technical route of the intelligent hidden danger analysis system for the transformer substation communication power supply is shown in fig. 3 and mainly comprises a management layer, a service layer, a data persistence layer and a protocol processing layer.
Wherein, the management layer: the management end mainly adopts a C/S architecture and C + + programming, and optimizes the operation usability and the execution efficiency. The MFC programming of Microsoft Visual Studio is used for programming. And an interface technology of the MFC is applied to realize an interactive interface-friendly management end. And the version of the management end is effectively controlled by applying an automatic upgrade management technology.
And (3) a service layer: the communication between the services adopts HTTP protocol communication, the packaging format of the communication content adopts XML packaging format, and the application of standard protocols such as HTTP and the like can greatly improve the intercommunication capability of the system. The programming control efficiency is improved by adopting the programming technologies such as Thread Pool, Memory Pool and the like and mainly adopting C + +, STL and BOOST in programming. And the unified SQL API is adopted for accessing the database to realize the access to the database.
A data persistence layer: the data persistence layer adopts a reliable database system, and the specific configuration parameters of each service adopt XML configuration files. The parameter XML configuration file stores parameters that cannot be configured through the database in each service, such as database connection configuration parameters, service IDs, and the like, and the file is generally configured only when the system is deployed and generally does not need to be modified after running. The database system adopts SqlServer.
And a protocol processing layer: the system adopts a tcp \ udp protocol, so the interaction capability of the system is strong. And an independent abstract layer and the expansibility of a draft protocol are adopted in the application protocol processing.
In specific implementation, the specific implementation process of each module of the intelligent hidden danger analysis system of the transformer substation communication power supply is as follows:
(1) and the protocol conversion module is used for converting the communication protocol of the communication power supply so as to acquire the real-time operation information of the communication power supply.
Specifically, a protocol conversion module is developed to access communication power supplies of different manufacturers and different types through a private protocol provided by each manufacturer; the functions of the protocol conversion module include: connection and keep-alive of equipment; and acquiring real-time data of all analog quantities and switching quantities.
(2) And the interconnection interface module is used for communication between the power environment monitoring system and the fault diagnosis analysis module.
The technical specification of the interconnection interface module can be formulated by combining the requirements of communication power failure diagnosis and analysis system service, and standardized technical support is provided for realizing the failure diagnosis and analysis service.
The interconnection interface module is realized by adopting a standard TCP protocol, and the message content adopts a self-defined format.
Specifically, the interconnection interface module includes:
(a) and (3) a system on-line and off-line notification data interface:
the system online and offline notification data interface uses HTTP + XML, requests to use standard HTTP Request, and for easy expansion, preferentially uses Post, and needs to support Get-mode access message, the message body should be encapsulated by XML, as shown in fig. 4.
The format of the system online and offline notification data interface request command is as follows:
the format of the response command of the system online and offline notification data interface is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Response_Update_Status |
| From | Must choose | String | Address coding of request terminal |
| To | Must choose | String | Address coding of destination |
(b) Communication power supply equipment resource information acquisition interface:
the communication power supply device resource information acquisition interface is used for acquiring parameters of all communication power supplies in the dynamic environment monitoring system, as shown in fig. 5.
The resource information acquisition interface request command format of the communication power supply equipment is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Request_Resource |
| Code | Must choose | String | Address code |
| UserCode | Must choose | String | User address coding |
| FromIndex | Must choose | INT32 | Number of start records expected to be returned, start value 1 |
| ToIndex | Must choose | INT32 | Number of end records expected to return |
The resource information acquisition interface response command format of the communication power supply equipment is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Response_Resource |
| Code | Must choose | String | Node address encoding |
| UserCode | Must choose | String | User address coding |
| RealNum | Must choose | INT32 | Actual number of nodes involved |
| SubNum | Must choose | INT32 | Actual number of returned nodes |
| FromIndex | Must choose | INT32 | Number of start nodes, start value 1 |
| ToIndex | Must choose | INT32 | Number of end nodes |
| Name | Must choose | String | Name (R) |
| Type | Must choose | INT32 | Node type, 0: switching value, 1: analog quantity |
(c) Real-time data query interface:
the real-time data query interface is used for querying all real-time data of the communication power supply, as shown in fig. 6.
The format of the real-time data query interface request command is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Request_RealTime_Data |
| UserCode | Must choose | String | User address coding |
The real-time data query interface response command format is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Response_RealTime_Data |
| RealNum | Must choose | INT32 | Actual number of nodes involved |
| SubNum | Must choose | INT32 | Actual number of returned nodes |
| FromIndex | Must choose | INT32 | Number of start nodes, start valueIs 1 |
| ToIndex | Must choose | INT32 | Number of end nodes |
| Code | Must choose | String | Address coding |
| Value | Must choose | String | Numerical value |
| Type | Must choose | String | Node type, 0: switching value, 1: analog quantity |
| State | Must choose | String | Status of state |
(d) Historical data query interface:
the historical data query interface is used for querying all historical data of the communication power supply, as shown in fig. 7.
The historical data query interface request command format is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Request_History_Data |
| Code | Must choose | String | Query address encoding |
| UserCode | Must choose | String | User address coding |
| BeginTime | Must choose | String | Start time, format e.g. 1990-01-01T00:00:00Z |
| EndTime | Must choose | String | The end time, format, e.g., 1990-01-01T00:00:00ZZ |
| FromIndex | Must choose | INT32 | Number of start records expected to be returned, start value 1 |
| ToIndex | Must choose | INT32 | Number of end records expected to return |
The historical data query interface response command format is as follows:
(e) the real-time warning pushing interface:
the real-time warning pushing interface is used for being integrated with an original warning interface to partition a hidden danger warning window, and when an analysis system performs warning and warning, the real-time warning pushing interface can be pushed to a warning interface of a dynamic environment monitoring system to be displayed, as shown in fig. 8.
The format of the request command of the real-time alarm pushing interface is as follows:
| parameter name | Options for | Type of parameter | Description of parameters |
| EventType | Must choose | String | Request_Push_Alarm |
| Code | Must choose | String | Address coding |
| UserCode | Must choose | String | User address coding |
| Time | Must choose | String | Alarm time, format e.g. 1990-01-01T00:00:00Z |
| Type | Must choose | String | Alarm type, 0: start alarm, 1: end alarm |
(3) The fault diagnosis analysis module is used for calculating the capacity state of the rectification module, the current equalizing state of the rectification module, the fuse capacity state and the cable capacity state based on the real-time running information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
Wherein, when the accumulated sum of all the sub-health degrees is greater than or equal to a preset threshold (such as 80), the communication power supply is judged to be in a healthy state.
And when the accumulated sum of all the sub-health degrees is smaller than a preset threshold (such as 80), judging the health state of the communication power supply according to the stability of the communication power supply.
It should be noted here that the communication power health state preset threshold may also be specifically set according to actual situations.
Wherein, the calculation process of the sub-health degree of the communication power supply comprises the following steps:
setting corresponding reference values of the capacity state of the rectifying module, the current equalizing state of the rectifying module, the fuse capacity state and the cable capacity state; the fuse capacity state comprises a storage battery fuse state, a power supply screen output fuse state and a distribution screen input fuse; the cable capacity state comprises an alternating current line capacity state, an inter-screen direct current line capacity state and a storage battery direct current line capacity state;
and according to the corresponding reference value, quantitatively representing the current capacity state of the rectifier module, the current equalizing state of the rectifier module, the fuse capacity state and the cable capacity state, and obtaining the corresponding sub-health degree.
Such as: the corresponding reference values of the capacity state of the rectifying module, the current equalizing state of the rectifying module, the fuse state of the storage battery, the output fuse state of the power supply panel, the input fuse of the distribution panel, the capacity state of an alternating current line, the capacity state of an inter-panel direct current line and the capacity state of a direct current line of the storage battery are respectively as follows: 2. 0.5, 1.5, 1 and 2.
The reference values corresponding to these states may be specifically set according to actual conditions, and will not be described in detail here.
When the states of the capacity state of the rectifying module, the current equalizing state of the rectifying module, the fuse state of the storage battery, the output fuse state of the power supply panel, the input fuse state of the distribution panel, the inter-panel direct current capacity state and the direct current capacity state of the storage battery are correspondingly displayed in red, the corresponding sub-health degree is the product of a reference value and 0; when displayed orange, the corresponding sub-health is the product of the reference value and a first factor (such as 0.6); when displaying blue, the corresponding sub-health is the product of the reference value and a second factor (for example: 0.8); when displayed as green, the corresponding sub-health is the product of the reference value and 1. Wherein, the first factor and the second factor are constants between 0 and 1, and can be preset.
When the alternating current line capacity state is correspondingly displayed to be red, the corresponding sub-health degree is the product of the reference value and 0; when displayed orange, the corresponding sub-health is the product of the reference value and a third factor (such as 0.8); when displayed as green, the corresponding sub-health is the product of the reference value and 1. The third factors are all constants between 0 and 1, and can be preset.
Specifically, the fault diagnosis and analysis module comprises a total current and total voltage floating analysis module, a rectification module capacity analysis module, a rectification module current sharing analysis module, a fuse capacity analysis module and a cable capacity analysis module.
A. Total voltage float analysis module:
in specific implementation, historical data of a power environment is obtained, the total current and total voltage floating condition is analyzed, and if the current or voltage floating exceeds a preset threshold value, the communication power supply is judged to be unstable; otherwise, the communication power supply is judged to be stable.
The total current and total voltage float conditions may be implemented using a total current and total voltage float analysis module. Specifically, regression calculations were performed on three months of data for a single voltage, and the slope was determined:
x, X denotes time (day), Y, Y denotes DC bus voltage (volt)
Average number: x0＝(x1+x2+x3+...+xn)/n，Y0＝(y1+y2+y3+...+yn)/n
B ≈ 0 in the normal state. Under the abnormal state, the voltage gradually deviates, the value of b slightly increases or decreases, and when the value is greater than 0.1 or less than-0.1, an alarm is given to show that the voltage stability is abnormal.
Calculating the power load change condition by using an exponential smoothing method for the budget of a single power load:
wherein,
is a predicted value. z (t) indicates the load current of the single power supply at time t, which is the measured value. a is attenuation factor, and a is more than 0 and less than 1.
The load prediction can see whether the current load of the power supply increases or decreases, and whether the power supply is used and an unstable state occurs is judged. If it is not
Or
The current load is fluctuated and unstable.
A comparison of the total current curve A, the current curve A1-A2, and the voltage curve V1-V2 is shown, with current in the left vertical coordinate system, voltage in the right vertical coordinate system, and time on the abscissa. And carrying out probability calculation on the current change curve.
The stability of the power supply system can be judged by analyzing the voltage slope, the current prediction and the load stability comparison graph. The system is stable and displays green; the system was unstable and showed red color.
B. A rectification module capacity analysis module:
the trade mark requirement (Q/GDW 11442-2015): the configuration number of the-48V high-frequency switch rectifying modules is not less than 3 and meets the principle of N +1, and the capacity is more than 20 percent of the capacity of the storage battery pack of the high-frequency switch power supply and the sum of the total load capacity of the communication station under the condition that the number of the modules is N.
The formula: n ≧ (storage battery capacity x k + total load current module + Ix)/rated current
Wherein: ix is the current load capacity expansion design value, k is the capacity coefficient, and 0.2 or 0.1 is selected
Examples are: and each station is provided with two sets of high-frequency switching power supplies, the rated current of each rectifier module is 40A, the load is 50A and 60A respectively, and the planned capacity expansion load is 5A. Each set of high-frequency switch is connected with 2 groups of 500AH storage battery packs, and the number of the high-frequency switch power supply rectifying modules is calculated as follows:
the number of the rectifier modules is N +1 (50+60+5+500 + 2+ 10%)/40 +1 5.365+1 (6.365), and 7 rectifier modules are provided.
When the calculated value of N is decimal, the value of N is only suitable for the principle of "upwards taking value", and not "round off" method, otherwise when spare module damages the back, can cause the battery to be short of charge, capacity accumulative loss, the potential safety hazard of life-span termination in advance.
It can be seen from the above formula that the capacity of the storage battery pack, the total load and the rated current of the module are known and quantitative, but the actual load current of the machine room is a variable due to the continuous increase of new equipment, capacity expansion and the like, but the actual load of the machine room can be obtained in real time through protocol conversion with the communication power supply. Therefore, the diagnostic and analysis system can calculate the standard configuration number of the rectifier modules.
At this time, setting a1 to be the standard rectifier module configuration number (N +1), B1 to be the actual rectifier module number (obtained by protocol conversion), C1 to be a1-B1, D1 to be the current load expansion design value Ix, and the actual C1 may have the following three cases:
when k is 0.2, C1> is 0, the module meets the standard requirement and displays green;
when k is 0.1, C1> is 0, the module meets the operation requirement and displays blue;
when C1 is equal to-1, the module has no standby module, and gives out an early warning to display orange;
c1< -1 >, the module configuration is less serious, the system is overloaded, a serious alarm is given, and the color is displayed in red.
When C1< become-1, the fault diagnosis analysis system can push alarm information to the power environment monitoring system, and automatically and timely early warning and prompting operation and maintenance personnel to expand the capacity of the rectifier module in modes of voice, short message and the like, so that the safety of the communication power supply is improved greatly.
C. The rectifying module is used for current sharing analysis:
the communication power supply is provided with a plurality of rectifier modules which work in parallel and share the current output to the load. The parallel operation of the rectifier modules is beneficial to the capacity expansion of the load, and the load current must be evenly distributed when the load current is required at the same time. The purpose is to prevent the damage of overheat setting caused by partial large current of the module and simultaneously avoid the over-current protection to stop the module. When a plurality of rectifier modules run in parallel, the rectifier modules have good current sharing performance, the current sharing unbalance degree is smaller than 5% of the rated current value (namely the load current of the power supply), and the rectifier modules normally display green.
The formula: the current sharing unbalance is less than or equal to (module output current limit value-module output current average value)/rated current value of the module is multiplied by 100 percent (reference)
When the current of the rectifier module is more than +/-5%, the duration time is less than 1 minute, and early warning is sent to display blue;
when the current of the rectifier module is more than +/-5%, the duration is more than 1 minute, the module breaks down, and orange color is displayed;
when serious alarm occurs, the fault diagnosis and analysis system can push alarm information to the power environment monitoring system, and automatically and timely give an early warning in a voice mode, a short message mode and the like and prompt operation and maintenance personnel to maintain the rectifier module, so that the safety of the communication power supply is improved.
D. Fuse capacity analysis module:
the high frequency switching power supply panel fuse should be greater than the total load current. Existing fuse types (unit: a), C ═ 100, 125, 160, 200, 250, 315, 350, 400, 500, 550, 630, 800, and the like. Wherein: ix is the current load capacity expansion design value.
It can be seen from the above formula that the rated current of the module is a known fixed quantity, the capacity of the fuse can be obtained by manual input by operation and maintenance personnel, a2 is set as the total load current and collected by the power supply, B2 is set as the current load capacity expansion design value Ix, C2 is set as the fuse value, and D2 is set as a2+ B2.
Battery fuse, real C2, may have the following three conditions:
1) c2> D2 and C2>0.55 storage battery capacity, the fuse capacity can meet the system demand, display green normally;
2) c2>1.3 × D2, normal, showing blue;
3)1.3 × D2> C2> D2 showed orange color;
4) c2< D2, marking the value of the fuse and displaying red;
power supply screen and distribution panel fuse:
1) c2> 2X D2, meet the standard requirement, reveal green;
2) 2D 2> C > 1.5D 2, meeting the operating requirements, displaying blue;
3)1.5 × D2> C2> D2, small in capacity, showing orange color;
4) c2< D2, marking the value of the fuse and displaying red;
when the fault occurs to 4), the fault diagnosis and analysis system can push the alarm information to the power environment monitoring system, and automatically and timely early warn and prompt operation and maintenance personnel to expand the fuse in the modes of voice, short message and the like, so that the fault diagnosis and analysis system is timely, accurate, automatic and convenient and greatly improves the safety of the communication power supply.
E. Cable capacity analysis module:
the cable judgment criteria are basically as shown in the table:
a3 is total load current, B3 is current load expansion design value Ix, D3 is cable cross-sectional area:
ac cable (communication power supply no ac load):
AC line diameter requirement S ═ A3 × 53.6/(0.9 × 3 × 380 × 2)
1) When A3 is equal to the power supply rectification capacity, D3> S A3 meets the specification, and green is displayed;
2) when A3 is the load current, SI is calculated, S A3 is D3 is larger than SI, operation is satisfied, and blue is displayed;
3) when D3< SI, there is a potential for red color to appear.
Inter-screen and battery dc cables:
S＝I*L*2/57/0.5
1) d3> S, displaying green;
2) (a3+ B3)/2.5< D3< S, showing blue;
3) (a3+ B3)/2.5< D3< S, showing orange;
4) d3 ≦ (A3+ B3)/4, showing red color.
As shown in fig. 10, the working method of the intelligent hidden danger analysis system for a substation communication power supply in this embodiment includes:
converting a communication protocol of the communication power supply to acquire real-time operation information of the communication power supply;
acquiring power environment information uploaded by a power environment monitoring system;
calculating the capacity state of a rectifier module, the current equalizing state of the rectifier module, the fuse capacity state and the cable capacity state based on the real-time operation information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
The intelligent hidden danger analysis system for the transformer substation communication power supply has the following characteristics:
(1) consistency: the system integrates new functions in the original dynamic environment system, and needs to unify interfaces, manage and alarm uniformly, so as to ensure the high consistency of services, functions, interfaces and contents.
(2) Standard property: the system is in domestic standard, and the stability, maturity and compatibility of functions are guaranteed.
(3) High efficiency: the system collects and analyzes data in real time, so that timeliness of information is guaranteed, and accurate information of hidden dangers and faults is recorded.
(4) And (3) expandability: the design of system software adopts a layered modular structure, and the purposes of flexible setting and modification, convenient expansion and adaptation to the development and change of services are achieved. The software and hardware platforms have good expandability, are convenient for system upgrading and updating, and can adapt to the continuous development of various different services.
(5) Ease of use: the system is easy to use; meanwhile, the system is centralized and simple in maintenance and is humanized in design.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a hidden danger intelligent analysis system of communication power supply of transformer substation which characterized in that includes:
the protocol conversion module is used for converting a communication protocol of the communication power supply so as to acquire real-time operation information of the communication power supply;
the interconnection interface module is used for communication between the power environment monitoring system and the fault diagnosis and analysis module;
the fault diagnosis analysis module is used for calculating the capacity state of the rectification module, the current equalizing state of the rectification module, the fuse capacity state and the cable capacity state based on the real-time running information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
2. The intelligent hidden danger analysis system for the substation communication power supply according to claim 1, wherein in the fault diagnosis analysis module, when the cumulative sum of all the sub-health degrees is greater than or equal to a preset threshold value, it is determined that the communication power supply is in a healthy state.
3. The intelligent hidden danger analysis system for the substation communication power supply according to claim 1, wherein in the fault diagnosis analysis module, when the sum of all the sub-health degrees is smaller than a preset threshold value, the health state of the communication power supply is judged according to the stability of the communication power supply.
4. The intelligent hidden danger analysis system for the substation communication power supply according to claim 3, wherein historical data of a power environment is obtained in the fault diagnosis analysis module, the total current and total voltage floating condition is analyzed, and if the current or voltage floating exceeds a preset threshold value, the communication power supply is judged to be unstable; otherwise, the communication power supply is judged to be stable.
5. The intelligent hidden danger analysis system for the substation communication power supply according to claim 1, wherein in the fault diagnosis analysis module, the calculation process of the sub-health degree of the communication power supply is as follows:
setting corresponding reference values of the capacity state of the rectifying module, the current equalizing state of the rectifying module, the fuse capacity state and the cable capacity state;
and according to the corresponding reference value, quantitatively representing the current capacity state of the rectifier module, the current equalizing state of the rectifier module, the fuse capacity state and the cable capacity state, and obtaining the corresponding sub-health degree.
6. The intelligent substation communication power supply potential hazard analysis system of claim 1, wherein the fuse capacity states include battery fuse states, power panel output fuse states, and distribution panel input fuses.
7. The intelligent hidden danger analysis system for the substation communication power supply according to claim 1, wherein the cable capacity state comprises an alternating current line capacity state, an inter-screen direct current line capacity state and a storage battery direct current line capacity state.
8. The intelligent analysis system for the hidden dangers of the transformer substation communication power supply of claim 1, further comprising a data preprocessing module, wherein the data preprocessing module is used for judging authenticity of real-time operation information and power environment of the communication power supply so as to eliminate numerical values which do not conform to actual conditions.
9. The intelligent hidden danger analysis system for the substation communication power supply of claim 1, further comprising an application display module for displaying the rectifier module capacity state, the rectifier module current sharing state, the fuse capacity state, the cable capacity state and the communication power supply health state.
10. An operating method of the intelligent hidden danger analyzing system for the substation communication power supply, which is described in any one of claims 1 to 9, is characterized by comprising the following steps:
converting a communication protocol of the communication power supply to acquire real-time operation information of the communication power supply;
acquiring power environment information uploaded by a power environment monitoring system;
calculating the capacity state of a rectifier module, the current equalizing state of the rectifier module, the fuse capacity state and the cable capacity state based on the real-time operation information and the power environment information of the communication power supply to obtain the corresponding sub-health degree of the communication power supply; if any sub-health degree is 0, judging that the communication power supply has hidden danger; otherwise, the health state of the communication power supply is judged according to the comparison between the sub-health degree accumulation and a preset threshold value.
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