CN106991129B - Real-time database system based on SOA (service oriented architecture) framework power dispatching system and implementation method - Google Patents
Real-time database system based on SOA (service oriented architecture) framework power dispatching system and implementation method Download PDFInfo
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Abstract
The invention relates to a real-time database system based on an SOA architecture power dispatching system and an implementation method. The system comprises a front-end unit, a user unit, a background processing unit and a service unit which are arranged on the cloud server based on an SOA framework, wherein the user unit, the service unit and the front-end unit are respectively connected with the background processing unit. The database is virtualized by adopting a real-time database system, the data form a uniform public array which is used as a service for providing an access interface, the aim of accessing the database is achieved by calling the service, and the complex installation, maintenance and interaction of the commercial database are avoided. The method also has the advantages of lower cost, stronger reliability, stronger real-time property and easier expansion.
Description
Technical Field
The invention relates to the technical field of power grid dispatching, in particular to a real-time database system based on an SOA (service oriented architecture) architecture power dispatching system and an implementation method thereof, wherein the real-time database system is low in cost, high in reliability and strong in real-time performance.
Background
The power dispatching automation system is a distributed and heterogeneous complex integrated system for real-time monitoring, and the real-time database management system is a core support platform of an SCADA system and an EMS system, and the real-time performance, reliability, stability and openness of the real-time database management system directly determine the performance of the whole system. Applications such as data acquisition, data monitoring and real-time alarm in the SCADA system need to reflect the operation state of the power system in real time, and particularly when the operation state of the power system changes, the applications need to receive, record, alarm and process corresponding events in a short time, so that a database needs to be accessed at a high frequency. On one hand, a large number of high-level application software services (such as dispatcher load flow, state estimation, reactive power optimization and the like) in the EMS system have high requirements on real-time performance of data, and on the other hand, the data access amount and the calculation amount are large, so that the time for accessing the database needs to be reduced as much as possible. The bottleneck existing in the real-time database management system is more and more obvious at present:
1) the general relational database is widely applied to business and management business application fields due to the characteristics of stability, flexibility and strong functions and a plurality of excellent qualities, but the access and refresh speed of the general relational database is far less than the requirement of a real-time database due to the multiple functions, so that the general relational database is not suitable for the application of an electric power dispatching automation system.
2) Compared with a general relational database, the lightweight internal memory database and the embedded database (such as Berkeley DB and SQLite) have faster response time and higher throughput, can meet the data access and refresh speed of the power dispatching automation system, but do not have a good interface for a dispatcher to interact with the database.
3) In a traditional power dispatching automation system, all functional modules interacting with a real-time database are deployed in the same solution, the close coupling integration mode causes the system to be more expensive to modify, and the addition of new functions causes codes to be frequently modified, which is not beneficial to the maintenance and the upgrade of the system.
4) The real-time database management system has not realized cross-platform and cross-intelligent mobile device operation in a webpage form, and the user experience function is poor.
Therefore, it is becoming increasingly important to find a method for implementing a real-time database management system with high real-time performance, strong expandability, stable and reliable operation, and easy operation.
Disclosure of Invention
The invention mainly solves the problems that the database of the power grid dispatching system in the prior art is slow in speed, high in cost, inconvenient to maintain and upgrade and incapable of operating across platforms, and provides a real-time database system based on an SOA (service oriented architecture) architecture power dispatching system and an implementation method thereof, wherein the real-time database system is low in cost, high in reliability and strong in real-time performance.
The technical problem of the invention is mainly solved by the following technical scheme: a real-time database system based on an SOA (service oriented architecture) framework power dispatching system comprises a front-end unit, a user unit, a background processing unit and a service unit which are arranged on a cloud server based on the SOA framework, wherein the user unit, the service unit and the front-end unit are respectively connected with the background processing unit;
the preposition unit acquires the telemetering and remote signaling data of each measuring point and sends the telemetering and remote signaling data to the background processing unit;
the user unit is used for displaying telemetering remote signaling data of each measuring point in the system to the substation in real time, forming a file according to the data editing of a user, and updating the display data after the processing of the background processing unit;
the background processing unit is used for receiving the information of the front unit and the user unit, grouping the data of each measuring point into different public arrays to be used as service for other scheduling modules to access, binding the PID of the measuring point with each data, acquiring corresponding data according to the PID information and sending the corresponding data to the service unit;
and the service unit comprises a common data interface unit connected with the background processing unit, the common array is used as a service providing access interface, and the data required to be provided in the user unit is sent to other scheduling modules through the background processing unit. The invention adopts a real-time database system to virtualize the database, forms the data into a uniform public array as a service providing access interface, achieves the aim of accessing the database by calling the service, and avoids the complex installation, maintenance and interaction of the commercial database. The method also has the advantages of lower cost, stronger reliability, stronger real-time property and easier expansion.
The system developed based on the SOA is applied, the cloud server externally publishes an interface containing a Web address and a port number in an IIS hosting mode, and other functional modules of the power dispatching system are mutually called through interfaces formed in a service form, so that the reusability of resources and the loose coupling of the system are realized, and the maintenance and the expansion of the system are facilitated.
The real-time database system is deployed on the cloud server, on one hand, hardware does not need to be maintained, only lease cost needs to be paid, and the cost is low; on the other hand, the method can realize automatic disaster recovery, is not influenced by the fact that the server stops working due to accidents such as power failure and the like, and has higher operation stability and reliability.
As a preferred scheme, the user unit comprises an interaction unit for providing a user to edit data, a generation unit for storing the edited data to generate a resource file, a reading unit for automatically reading the resource file and sending the resource file to a background processing unit to synchronize the data, a data writing unit for acquiring measuring point data and writing the measuring point data into a webpage through the background processing unit, a refreshing unit for updating the currently acquired data to the webpage at regular time, a webpage unit for displaying the data and providing access for substations, and an alarm unit for judging and alarming the data, wherein the interaction unit is connected with the generation unit, the generation unit is connected with the background processing unit, the background processing unit is connected with the data writing unit, the data writing unit is connected with the refreshing unit, the refreshing unit is connected with the webpage unit, and the webpage unit is connected with the alarm unit. The interaction unit provides an entrance for modifying data, and a user can edit and modify the plant names corresponding to the database table, the information of the telemeter and the telemeter in the plant, and set an upper alarm limit, a lower alarm limit, an alarm switch and the like according to the requirements of different substations. According to the scheme, the webpage unit is arranged, and data are provided for substations or users to view in a webpage mode, so that cross-platform access is realized, and the use is more convenient.
A real-time database implementation method based on an SOA architecture power dispatching system comprises the following steps:
s1, a background processing unit obtains and stores remote sensing remote signaling real-time data and PID numbers of each measuring point through a front unit; a cache is arranged in the background processing unit, telemetry remote signaling data and PID numbers are acquired from the front-end unit and stored every time, and the data acquired last time is covered.
S2, sorting and screening each group of data from the telemetering and remote signaling real-time data, respectively establishing an array, and binding the PID number with the corresponding data in each array;
s3, transmitting each array into a service unit, respectively establishing an interface for each array, and respectively transmitting the arrays onto corresponding interfaces; and providing services for other power grid dispatching modules through the array through the interface. Other scheduling modules can obtain the array data of the corresponding interface through the network access interface, so that the aim of accessing the real-time database is fulfilled, and the access transparency of the real-time database is realized. The service unit provides the contract, binding and termination point of the address of the service, and forms a data access interface.
And S4, simultaneously transmitting each array to a client unit, and displaying data on the webpage unit in real time.
The invention adopts a real-time database system to virtualize the database, forms the data into a uniform public array as a service providing access interface, achieves the aim of accessing the database by calling the service, and avoids the complex installation, maintenance and interaction of the commercial database. The method also has the advantages of lower cost, stronger reliability, stronger real-time property and easier expansion.
As a preferred scheme, the specific process of forming an array and binding PID numbers in step S2 includes:
s21, forming an array of the telemetering and remote signaling data and binding PID, wherein the steps comprise:
s211, traversing the telemetering and telesignalling data according to the PID number, screening out corresponding data, respectively binding the data with the PID number, and reordering and combining the screened data according to the names of the transformer substations to form a substation telemetering and telesignalling array;
s212, screening out values of current, voltage, active power, reactive power and power factors on the main network wiring diagram from the telemetering and remote signaling data to form a main network wiring diagram array;
s22, forming an array of the matching parameters and binding PID, including:
s221, binding corresponding measuring point name according to the PID number to form a measuring point name array;
s222, acquiring upper and lower voltage out-of-range alarm limits set by each measuring point, and binding the upper and lower voltage out-of-range alarm limits with corresponding PID numbers to form an alarm condition array;
s223, acquiring data of the substation telemetering and remote signaling array, judging whether the voltage is out of range according to the alarm condition array, and storing a judgment result to form an operation state array;
s224, acquiring substation remote sensing telecommand array data and roll call array data, judging a telecommand type according to keywords in roll call, and storing a judgment result to form a type array;
s23, array formation and PID binding steps of the power of the whole network and the substation comprise:
s231, acquiring substation remote sensing remote signaling array data, screening remote sensing values of total network power calculation, judging whether the calculated values are positive or negative according to the power flowing direction, accumulating the judgment results to obtain total network power, and storing to form a total network power array;
and S232, acquiring the data of the substation telemetering remote signaling array, screening out a telemetering value corresponding to power calculation of each substation, calculating substation power, and storing to form a substation power array.
As a preferable scheme, the specific process of step S3 includes:
s31, respectively establishing interfaces for other power grid dispatching modules to access for each array;
s32, setting refreshing time, and refreshing various arrays transmitted into the service unit at regular time;
and S33, correspondingly matching the transmitted arrays to each interface.
As a preferable scheme, the step S4 further includes a step of processing user modification, including:
s41, the webpage unit stores each edited array data as an XML file according to the data editing information of the user and sends the XML file to the background processing unit; after the user edits the data and saves the data, the generating unit generates a resource file, the resource file is saved by an XML document, and the XML file is updated after the data is revised, so that the transportability of the real-time database is ensured.
And S42, the background processing unit selects array data which can be modified by a user from the XML file, and the data synchronously updates the array stored in the background processing unit.
Therefore, the invention has the advantages that: the database is virtualized by adopting a real-time database system, the data form a uniform public array which is used as a service for providing an access interface, the aim of accessing the database is achieved by calling the service, and the complex installation, maintenance and interaction of the commercial database are avoided. The method also has the advantages of lower cost, stronger reliability, stronger real-time property and easier expansion.
Drawings
FIG. 1 is a block diagram of one configuration of the present invention.
1-user unit 2-background processing unit 3-service unit 4-preposition unit 11-interaction unit 12-generation unit 13-reading unit 14-data writing unit 15-refreshing unit 16-webpage unit 31-common data interface unit.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
in this embodiment, a real-time database system of an SOA architecture-based power scheduling system, as shown in fig. 1, includes a front-end unit 4, a user unit 1, a background processing unit 2, and a service unit 3, which are arranged on a cloud server and based on an SOA architecture, where the user unit, the service unit, and the front-end unit are respectively connected to the background processing unit;
the preposition unit acquires the telemetering and remote signaling data of each measuring point and sends the telemetering and remote signaling data to the background processing unit;
the user unit is used for displaying telemetering remote signaling data of each measuring point in the system to the substation in real time, forming a file according to the data editing of a user, and updating the display data after the processing of the background processing unit;
the background processing unit is used for receiving the information of the front unit and the user unit, grouping the data of each measuring point into different public arrays to be used as service for other scheduling modules to access, binding the PID of the measuring point with each data, acquiring corresponding data according to the PID information and sending the corresponding data to the service unit;
the service unit comprises a common data interface unit 31 connected with the background processing unit, the common array is used as a service providing access interface, and the data required to be provided in the user unit is sent to other scheduling modules through the background processing unit.
The user unit comprises an interaction unit 11 for providing data editing for a user, a generation unit 12 for storing editing data and generating a resource file, a reading unit 13 for automatically reading the resource file and sending the resource file to the background processing unit for data synchronization, a data writing unit 14 for acquiring measuring point data through the background processing unit and writing the measuring point data into a webpage, a refreshing unit 115 for regularly updating the currently acquired data to the webpage, a webpage unit 16 for displaying the data and providing access for substations, and an alarm unit 17 for judging and alarming the data. The interactive unit is connected with the generating unit, the generating unit is connected with the background processing unit, the background processing unit is connected with the data writing unit, the data writing unit is connected with the refreshing unit, the refreshing unit is connected with the webpage unit, and the webpage unit is connected with the alarming unit. Each substation is connected with the webpage unit through a network and accessed through the network. The user unit, the background processing unit and the service unit can be arranged on different cloud servers and are connected with each other through a network.
A real-time database implementation method based on an SOA architecture power dispatching system comprises the following steps:
s1, a background processing unit obtains and stores remote sensing remote signaling real-time data and PID numbers of each measuring point through a front unit;
s2, sorting and screening each group of data from the telemetering and remote signaling real-time data, respectively establishing an array, and binding the PID number with the corresponding data in each array;
s3, transmitting each array into a service unit, respectively establishing an interface for each array, and respectively transmitting the arrays onto corresponding interfaces;
and S4, simultaneously transmitting each array to a client unit, and displaying data on the webpage unit in real time.
The specific process of forming an array and binding PID numbers in step S2 includes:
s21, forming an array of the telemetering and remote signaling data and binding PID, wherein the steps comprise:
s211, traversing the telemetering and telesignalling data according to the PID number, screening out corresponding data, respectively binding the data with the PID number, and reordering and combining the screened data according to the names of the transformer substations to form a substation telemetering and telesignalling array;
s212, screening out values of current, voltage, active power, reactive power and power factors on the main network wiring diagram from the telemetering and remote signaling data to form a main network wiring diagram array;
s22, forming an array of the matching parameters and binding PID, including:
s221, binding corresponding measuring point name according to the PID number to form a measuring point name array;
s222, acquiring upper and lower voltage out-of-range alarm limits set by each measuring point, and binding the upper and lower voltage out-of-range alarm limits with corresponding PID numbers to form an alarm condition array;
s223, acquiring data of the substation telemetering and remote signaling array, judging whether the voltage is out of range according to the alarm condition array, and storing a judgment result to form an operation state array;
s224, acquiring substation remote sensing telecommand array data and roll call array data, judging a telecommand type according to keywords in roll call, and storing a judgment result to form a type array;
s23, array formation and PID binding steps of the power of the whole network and the substation comprise:
s231, acquiring substation remote sensing remote signaling array data, screening remote sensing values of total network power calculation, judging whether the calculated values are positive or negative according to the power flowing direction, accumulating the judgment results to obtain total network power, and storing to form a total network power array;
and S232, acquiring the data of the substation telemetering remote signaling array, screening out a telemetering value corresponding to power calculation of each substation, calculating substation power, and storing to form a substation power array.
The specific process of step S3 includes:
s31, respectively establishing interfaces for other power grid dispatching modules to access for each array;
s32, setting refreshing time, and refreshing various arrays transmitted into the service unit at regular time;
and S33, correspondingly matching the transmitted arrays to each interface.
Also included in step S4 is a process step for user modification, including:
s41, the webpage unit stores each edited array data as an XML file according to the data editing information of the user and sends the XML file to the background processing unit;
and S42, the background processing unit selects array data which can be modified by a user from the XML file, and the data synchronously updates the array stored in the background processing unit.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms subscriber unit, background processing unit, service unit, preamble unit, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (5)
1. A real-time database system based on SOA architecture power dispatching system is characterized in that: the system comprises a prepositive unit, a user unit, a background processing unit and a service unit which are arranged on a cloud server based on an SOA framework, wherein the user unit, the service unit and the prepositive unit are respectively connected with the background processing unit;
the preposition unit acquires the telemetering and remote signaling data of each measuring point and sends the telemetering and remote signaling data to the background processing unit;
the user unit is used for displaying telemetering remote signaling data of each measuring point in the system to the substation in real time, forming a file according to the data editing of a user, and updating the display data after the processing of the background processing unit;
the background processing unit is used for receiving the information of the front unit and the user unit, grouping the data of each measuring point into different public arrays to be used as service for other scheduling modules to access, binding the PID of the measuring point with each data, acquiring corresponding data according to the PID information and sending the corresponding data to the service unit; the specific process of forming the array comprises the following steps:
forming an array of telemetric telemetry data, comprising:
traversing the telemetering and telesignalling data according to the PID number, screening out corresponding data, respectively binding with the PID number, and reordering and combining the screened data according to the transformer substation name to form a substation telemetering and telesignalling array;
screening out values of current, voltage, active power, reactive power and power factors on the main network wiring diagram from the telemetering and remote signaling data to form a main network wiring diagram array;
forming an array of matching parameters, including:
binding corresponding measuring point name according to the PID number to form a measuring point name array;
acquiring upper and lower voltage out-of-range alarm limits set by each measuring point, and binding the upper and lower voltage out-of-range alarm limits with corresponding PID numbers to form an alarm condition array;
acquiring data of a substation remote sensing and remote signaling array, judging whether the voltage is out of range according to an alarm condition array, and storing a judgment result to form an operation state array;
acquiring substation remote measuring telecommand array data and roll call array data, judging a telecommand type according to keywords in roll calls, and storing a judgment result to form a type array;
forming an array of full network and substation power, comprising:
acquiring substation remote measurement remote signaling array data, screening remote measurement values of total network power calculation, judging whether the calculated values are positive or negative according to the power flowing direction, accumulating the judgment results to obtain total network power, and storing to form a total network power array;
acquiring substation remote measurement remote signaling array data, screening remote measurement values corresponding to power calculation of each transformer substation, calculating substation power, and storing to form a substation power array;
and the service unit comprises a common data interface unit connected with the background processing unit, the common array is used as a service providing access interface, and the data required to be provided in the user unit is sent to other scheduling modules through the background processing unit.
2. The real-time database system of the SOA-based power dispatching system as claimed in claim 1, wherein the user unit comprises an interactive unit for providing data editing for a user, a generating unit for storing edited data to generate a resource file, a reading unit for automatically reading the resource file and sending the resource file to a background processing unit for data synchronization, a data writing unit for acquiring measuring point data through the background processing unit and writing the measuring point data into a webpage, a refreshing unit for regularly updating the currently acquired data to the webpage, a webpage unit for displaying the data and providing access to the webpage by substations, and an alarm unit for judging and alarming the data, the interactive unit is connected with the generating unit, the generating unit is connected with the background processing unit, the background processing unit is connected with the data writing unit, the data writing unit is connected with the refreshing unit, and the refreshing unit is connected with the webpage unit, the webpage unit is connected with the alarm unit.
3. A real-time database implementation method of an SOA-based power dispatching system, which adopts the system in claim 1 or 2, and is characterized by comprising the following steps:
s1, a background processing unit obtains and stores remote sensing remote signaling real-time data and PID numbers of each measuring point through a front unit;
s2, sorting and screening each group of data from the telemetering and remote signaling real-time data, respectively establishing an array, and binding the PID number with the corresponding data in each array;
s3, transmitting each array into a service unit, respectively establishing an interface for each array, and respectively transmitting the arrays onto corresponding interfaces;
s4, simultaneously transmitting each array to a client unit, and displaying data on a webpage unit in real time; the specific process of forming an array and binding PID numbers in step S2 includes:
s21, forming an array of the telemetering and remote signaling data and binding PID, wherein the steps comprise:
s211, traversing the telemetering and telesignalling data according to the PID number, screening out corresponding data, respectively binding the data with the PID number, and reordering and combining the screened data according to the names of the transformer substations to form a substation telemetering and telesignalling array;
s212, screening out values of current, voltage, active power, reactive power and power factors on the main network wiring diagram from the telemetering and remote signaling data to form a main network wiring diagram array;
s22, forming an array of the matching parameters and binding PID, including:
s221, binding corresponding measuring point name according to the PID number to form a measuring point name array;
s222, acquiring upper and lower voltage out-of-range alarm limits set by each measuring point, and binding the upper and lower voltage out-of-range alarm limits with corresponding PID numbers to form an alarm condition array;
s223, acquiring data of the substation telemetering and remote signaling array, judging whether the voltage is out of range according to the alarm condition array, and storing a judgment result to form an operation state array;
s224, acquiring substation remote sensing telecommand array data and roll call array data, judging a telecommand type according to keywords in roll call, and storing a judgment result to form a type array;
s23, array formation and PID binding steps of the power of the whole network and the substation comprise:
s231, acquiring substation remote sensing remote signaling array data, screening remote sensing values of total network power calculation, judging whether the calculated values are positive or negative according to the power flowing direction, accumulating the judgment results to obtain total network power, and storing to form a total network power array;
and S232, acquiring the data of the substation telemetering remote signaling array, screening out a telemetering value corresponding to power calculation of each substation, calculating substation power, and storing to form a substation power array.
4. The method for implementing the real-time database of the SOA architecture-based power dispatching system as claimed in claim 3, wherein the specific process of step S3 includes:
s31, respectively establishing interfaces for other power grid dispatching modules to access for each array;
s32, setting refreshing time, and refreshing various arrays transmitted into the service unit at regular time;
and S33, correspondingly matching the transmitted arrays to each interface.
5. The method of claim 4, wherein the step S4 further includes a step of processing user modification, including:
s41, the webpage unit stores each edited array data as an XML file according to the data editing information of the user and sends the XML file to the background processing unit;
and S42, the background processing unit selects array data which can be modified by a user from the XML file, and the data synchronously updates the array stored in the background processing unit.
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| CN106991129A (en) | 2017-07-28 |
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