CN103645417B - A kind of pure internet access-prepositioneddata data acquisition method - Google Patents

Abstract

The invention discloses a public network pre-data collection method, which can safely obtain the information collected by a remote wireless fault indicator through a power distribution automation master station; the remote wireless fault indicator detects the remote signal displacement and telemetry information in the line, The collected information is sent to the front-end server of the public network wirelessly through the public network; the front-end server of the public network realizes the reception and processing of the public network data, and transmits it to the safe area of the distribution automation platform in the format of a text file through the reverse physical isolation device Analyze the files to form real-time data, ensure the real-time requirements of the data when passing through the reverse physical isolation device, and realize the monitoring of 10KV overhead lines in the safe zone. The public network pre-data acquisition technology provided by the invention solves the problem of dispatchers blindly adjusting 10kV overhead lines; while ensuring the reliability of power supply for users, it saves construction and maintenance costs; and realizes the failure of overhead power distribution lines Information distribution and real-time collection and monitoring of telemetry information.

Description

A public network pre-data collection method

technical field

The invention relates to the field of distribution network automation control, in particular to a method for real-time collection and monitoring of overhead line information.

Background technique

The distribution network is the carrier for ordinary users to receive electricity. The stability and reliability of the distribution network directly affect the quality of power supply and the public's evaluation of power supply companies. At present, in areas where distribution network automation has not been implemented in my country, dispatchers still adjust blindly to the line diagram. After the line fails, it still relies on manual line inspection to find the fault point. However, due to the complex structure, long lines, and poor line inspection conditions, overhead lines need to spend a lot of time on fault location.

Based on the above problems, it is necessary to strengthen the construction of distribution network automation. If the traditional optical cable channel data collection method is used, the construction and maintenance costs are high, and it is not easy to set up on overhead lines in mountainous areas. The use of public network wireless data collection can not only effectively solve the above problems, but also meet the business application requirements of wireless fault indicators, which has practical significance for promoting the application of overhead line power distribution automation.

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to provide a public network pre-data collection method, which meets the application requirements of the wireless fault indicator service.

The purpose of the present invention is achieved like this:

A public network pre-data acquisition method provided by the present invention includes a power distribution automation platform, a public network pre-server, a remote wireless fault indicator, an overhead power distribution line, a data communication concentrator, and a reverse physical isolation device; The public network front-end server and the remote wireless fault indicator transmit data through the data communication concentrator, and the real-time collection and monitoring of the fault information and telemetry information of the overhead power distribution line specifically includes the following steps:

S1: Detect the fault information and telemetry information in the overhead distribution line through the remote wireless fault indicator, and send the collected fault information and telemetry information to the front-end server of the public network through the wireless channel;

S2: Receive and process fault information and telemetry information through the front-end server of the public network, and transmit them to the first security area of the distribution automation platform through the reverse physical isolation device in the format of a text file;

S3: Process the fault information and telemetry information through the master station of the distribution automation platform, and pass the processed data through the reverse physical isolation device in real time, so as to realize the monitoring of the overhead distribution line in the safety zone 1.

Furthermore, the remote wireless fault indicator is connected to a data communication concentrator configured on site through short-distance wireless communication, and each data communication concentrator in the fault indicator system has a fixed IP address.

Further, the wireless communication between the data communication concentrator and the public network front-end server is in a connected state, and the communication protocol between the public network front-end server and the data communication concentrator adopts the balanced 101 protocol.

Further, the public network front-end server is arranged as a GPRS server, which is arranged in three districts as an independent application, and is connected to the real-time system through a forward physical isolation device and a reverse physical isolation device.

Further, the front-end server of the public network is equipped with a master station encryption device, and a communication decryption device is installed at the data communication concentrator or a relevant decryption module is upgraded.

Further, the first area of the main station of the distribution automation platform is used for data maintenance, and the front-end GPRS system of the public network in the third area of the main station is automatically synchronized.

Further, the data communication concentrator adopts the following transmission strategy:

(1) Link establishment process

After the physical layer is established, the power distribution master station initiates a link request and reset process, and then the power distribution terminal initiates a link request to maintain the power balance of the system;

(2) General call and timing process

After each link is successfully established, the power distribution master station executes a general call, and then executes a general call at the preset time of the first general call; and executes the timing report at every second preset time of the general call; After the timing process fails, re-enter the link establishment process;

(3) Heartbeat message

After the link is successfully established, if the control station does not receive any message from the controlled station beyond the preset time value, it will send a heartbeat message, and the power distribution terminal needs to reply to confirm; when the control station does not receive the confirmation within the preset time value message, resend the heartbeat message, if the confirmation message is not received after resending 3 times, then re-enter the link establishment process;

(4) Remote signal displacement

When the power distribution terminal detects the remote signal displacement, it will send the remote signal displacement information to the main power distribution station in a timely manner; the power distribution terminal cannot clear this record before receiving the confirmation message from the power distribution master station, unless it overflows ;

(5) Telemetry

When the power distribution terminal detects the fault information, it sends the telemetry data in the fault information to the power distribution master station in real time; the power distribution master station responds with a confirmation message after receiving the telemetry message.

Further, the preset time of the first general call is 30 minutes, and the preset time of the second general call is 60 minutes; the preset time value is more than 5 minutes.

The advantages of the present invention are: the public network pre-data acquisition technology provided by the present invention solves the problem of blind adjustment of 10kV overhead lines by dispatchers; while ensuring the reliability of power supply for users, it saves construction and maintenance costs; realizes Real-time monitoring of fault information distribution and telemetry information of overhead distribution lines. It is a technology that meets the business application requirements of wireless fault indicators and has practical significance for promoting the application of overhead line power distribution automation. Compared with the existing channel transmission technology, it can effectively save construction and maintenance costs, and is easy to set up on overhead lines in mountainous areas.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the schematic diagram of public network pre-data acquisition provided by the present invention;

Fig. 2 is a schematic diagram of data transmission of the power distribution master station provided by the present invention.

In the figure, 1. The front-end server of the public network; 2. The remote wireless fault indicator; 3. The data communication concentrator.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

Example 1

Fig. 1 is the schematic diagram of public network pre-data acquisition provided by the present invention, as shown in the figure: a kind of public network pre-data acquisition method provided by the present invention, including power distribution automation platform, public network pre-server 1, remote wireless fault Indicator 2, overhead power distribution line, data communication concentrator 3 and reverse physical isolation device; the public network front-end server and remote wireless fault indicator transmit data through the data communication concentrator, and the fault of the overhead power distribution line The real-time collection and monitoring of information and telemetry information specifically includes the following steps:

S1: Detect the fault information and telemetry information in the overhead distribution line through the remote wireless fault indicator, and send the collected fault information and telemetry information to the front-end server of the public network through the wireless channel;

S2: Receive and process fault information and telemetry information through the front-end server of the public network, and transmit them to the first security area of the distribution automation platform through the reverse physical isolation device in the format of a text file;

S3: Process the fault information and telemetry information through the master station of the distribution automation platform, and pass the processed data through the reverse physical isolation device in real time, so as to realize the monitoring of the overhead distribution line in the safety zone 1.

The remote wireless fault indicator is connected to a data communication concentrator configured on site through short-distance wireless communication, and each data communication concentrator in the fault indicator system has a fixed IP address.

The wireless communication between the data communication concentrator and the public network front-end server is in a connected state, and the communication protocol between the public network front-end server and the data communication concentrator adopts the balanced 101 protocol.

The public network front-end server is arranged as a GPRS server, which is arranged in three districts as an independent application, and is connected to the real-time system through a forward physical isolation device and a reverse physical isolation device.

The front-end server of the public network is equipped with a master station encryption device, and a communication decryption device is installed at the data communication concentrator or a relevant decryption module is upgraded.

The first area of the master station of the distribution automation platform is used for data maintenance, and the front-end GPRS system of the public network in the third area of the main station is automatically synchronized.

Figure 2 is a schematic diagram of the data transmission of the power distribution master station provided by the present invention, as shown in the figure: the data communication concentrator provided in this embodiment adopts the following transmission strategy:

(1) Link establishment process

After the physical layer is established, the power distribution master station initiates a link request and reset process, and then the power distribution terminal initiates a link request to maintain the power balance of the system;

(2) General call and timing process

After each link is successfully established, the power distribution master station executes a general call, and then executes a general call at the preset time of the first general call; and executes the timing report at every second preset time of the general call; After the timing process fails, re-enter the link establishment process;

(3) Heartbeat message

After the link is successfully established, if the control station does not receive any message from the controlled station beyond the preset time value, it will send a heartbeat message, and the power distribution terminal needs to reply to confirm; when the control station does not receive the confirmation within the preset time value message, resend the heartbeat message, if the confirmation message is not received after resending 3 times, then re-enter the link establishment process;

(4) Remote signal displacement

When the power distribution terminal detects the remote signal displacement, it will send the remote signal displacement information to the main power distribution station in a timely manner; the power distribution terminal cannot clear this record before receiving the confirmation message from the power distribution master station, unless it overflows ;

(5) Telemetry

When the power distribution terminal detects the fault information, it sends the telemetry data in the fault information to the power distribution master station in real time; the power distribution master station responds with a confirmation message after receiving the telemetry message.

The preset time of the first general call is 30 minutes, and the preset time of the second general call is 60 minutes; the preset time value is more than 5 minutes.

Example 2

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a public network front-end data acquisition technology. This technology is based on public network communication front-end processors and supporting equipment, and receives the wireless fault indicator data of distribution network overhead lines through public network wireless and access dedicated lines to realize uploading. Information receiving and processing. The specific data collection process is as follows: the main station communicates with the off-station data concentrator through GPRS, the off-station data concentrator is responsible for collecting the data of the fault indicator in a certain section of the line, and the fault indicator is responsible for detecting large current faults and faults in the line. Even harmonic components in the line, and when a large current fault occurs, actively transmit the fault data in the line to the off-station data concentrator, and the off-station data concentrator will actively report to the master station after locating the fault.

After receiving and analyzing the fault indicator signal, the public network communication front-end processor transmits it to the first safe zone through the reverse physical isolation device in the format of a text file. The relevant program analysis files in the first safety area form real-time data and send them to the distribution automation system. The system adopts specific data processing measures to ensure the real-time requirements of data passing through the reverse physical isolation device.

The public network data acquisition server adopts the active and standby mode to receive the raw data transmitted wirelessly, and the communication protocol balances the 101 protocol. After the raw data is processed, it is safely sent to the main network server through the reverse isolation device.

The front-end data acquisition technology of the public network is based on the distribution automation platform and the front-end server of the public network, so that the main station of the distribution automation and the remote wireless fault indicator can communicate safely; the fault information distribution of the overhead distribution line is realized by means of remote signaling and telemetry Real-time monitoring of telemetry information; the communication process of this technology is as follows:

(1) The remote wireless fault indicator detects the remote signal displacement and telemetry information in the line, and sends the collected information to the front server of the public network wirelessly through the public network; the GPRS wireless public network information adopts the dedicated line between the mobile company and the power company Connect to the information communication room, and then connect to the power distribution automation public network router through the network.

(2) The front-end server of the public network adopts the active and standby mode to realize the receiving and processing of public network data, and the communication protocol balances the 101 protocol, and transmits it to the safe area of the distribution automation platform in the format of a text file through the reverse physical isolation device. The front-end server of the public network is arranged as a GPRS server, which is arranged in three areas as an independent application, and is connected to the real-time system through forward and reverse isolation. In this way, the DMS system can be divided into three relatively independent subsystems: a real-time system in one area, a WEB system in three areas, and a GPRS system in three areas. Considering the needs of crossing physical isolation devices, each subsystem needs its own database. For the whole system, data maintenance is completed in the real-time system in the first area, and the WEB and GPRS systems in the third area are automatically synchronized, that is, only one set of models is maintained. However, different from the three-zone WEB system, the three-zone GPRS is only responsible for front-end GPRS access. Therefore, the synchronization strategy is different from the WEB system. For the synchronization part of the commercial library, only the model data is synchronized, and the sampling and alarm data are not synchronized to solve the problem. Database capacity issues.

(3) Real-time data is formed by parsing files in the first safety area of the power distribution automation platform, and specific data processing measures are taken to ensure the real-time requirements of the data when the data passes through the reverse physical isolation device, and the 10KV overhead line in the first safety area is realized. monitor.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (4)

1. a pure internet access-prepositioneddata data acquisition method, including power distribution automation platform, public network front server, long distance wireless fault detector, overhead distribution, data communication concentrator, reverse physical isolation apparatus；Described public network front server and long distance wireless fault detector transmit data by data communication concentrator, it is characterised in that: the fault message of described overhead distribution and the Real-time Collection of telemetry intelligence (TELINT) and monitoring specifically include following steps:

S1: come the fault message in testing stand overhand lines and telemetry intelligence (TELINT) by long distance wireless fault detector, will give public network front server on the fault message of collection and telemetry intelligence (TELINT) through radio channel；

S2: process fault message and telemetry intelligence (TELINT) by public network front server reception, and with the form of text by the safe district of the incoming power distribution automation platform of reverse physical isolation apparatus；

S3: fault message and telemetry intelligence (TELINT) are processed by distribution main website, and the data after processing are in real time by the safe district of the incoming power distribution automation platform of reverse physical isolation apparatus, it is achieved the monitoring to overhead distribution in safety one district；Described data communication concentrator uses and transmits strategy as follows:

(1) link process is set up

After physical layer is set up, distribution main website initiates link request, reseting procedure, and then distribution terminal is initiated link request, maintained the power-balance of system；

(2) always call together, pair time process

Every time after link establishment success, distribution main website performs always to call together, always calls Preset Time together every first afterwards and performs the most always to call together；And message when second always calls Preset Time execution pair together；Always call together or pair time procedure failure after, then reenter link establishment process；

(3) heartbeat message

After link establishment success, control station exceedes preset time value and does not receives any message of slave station, then send heartbeat message, and distribution terminal need to reply confirmation；When control station does not receives confirmation message in preset time value, then retransmitting heartbeat message, if not receiving confirmation message yet after retransmitting 3 times, then reentering link establishment process；

(4) remote signalling displacement

Distribution terminal, when detecting that remote signalling conjugates, will deliver to distribution main website in remote signalling displacement information timely；Distribution terminal can not remove this record before receiving the confirmation message of distribution main website, unless overflowed；

(5) remote measurement

When distribution terminal detects fault message, real-time will deliver to distribution main website in telemetry in fault message；Distribution main website responds confirmation message after receiving remote measurement message；

Described first always to call Preset Time together be 30 minutes, and described second always to call Preset Time together be 60 minutes；Described preset time value is 5 minutes.

Pure internet access-prepositioneddata data acquisition method the most according to claim 1, it is characterized in that: described long distance wireless fault detector accesses the data communication concentrator of situ configuration by close range wireless communication modes, and the data communication concentrator in each fault detector system possesses fixing IP address.

Pure internet access-prepositioneddata data acquisition method the most according to claim 2, it is characterized in that: the radio communication between described data communication concentrator and public network front server is in connection status, the communication protocol between public network front server and data communication concentrator uses balance 101 stipulations.

Pure internet access-prepositioneddata data acquisition method the most according to claim 1, it is characterized in that: described public network front server is arranged as GPRS server, it is arranged in 3rd district as an independent utility, is connected with real-time system by positive physical isolation device, reverse physical isolation apparatus.