CN106211366A - Substation power data information collection network - Google Patents

Abstract

The invention discloses a kind of transformer station energy data information gathering network, including gathering main website, local side switch, electric energy meter, combining unit, stand in switch, acquisition terminal and RS485 turn ethernet module；RS485 is turned ethernet module and is connected with electric energy meter by RS485 bus, is connected with local side switch by Ethernet, for reading power meters data reforwarding office's end switch；In standing, switch is connected with local side switch by Ethernet；Acquisition terminal is connected with gathering main website drawn game end switch, resolves energy data and forwards collection main website, or receives the control command of collection main website transmission, resolves and reforwarding office's end switch.The present invention turns ethernet module with an acquisition terminal and RS485 and replaces multiple stage acquisition terminal, decreases equipment investment and maintenance workload, and less to the variation of existing electrical energy data acquiring network, the suitability is good, and reliability is high.

Description

Substation power data information collection network

technical field

The invention specifically relates to a substation power data information collection network.

Background technique

With the development of national economy and technology and the improvement of people's living standards, electric energy has become the most important secondary energy in people's daily production and life.

At present, there are mainly two types of power grid substations, one is ordinary old-fashioned substations, and the other is new-style smart substations: For old-fashioned substations, a separate electric energy meter is configured at each measurement point, and the electric energy meter is laid to the collection terminal. A separate 485 communication cable, generally each collection terminal has multiple 485 communication interfaces to complete the reading of the meter information and upload it to the main station, but because there are many cables connected to the collection terminal, the collection terminal can generally only be installed in Locally in the substation, the collection terminal collects the data of the electric energy meter and transmits it to the central office switch installed in the communication room of the ground survey through Ethernet, and then transmits it to the main collection station through the central office switch; for smart substations, there is no traditional The energy meter is replaced by a merging unit that integrates energy data measurement, control and protection; the acquisition terminal collects energy information from the merging unit through Ethernet, so there are no many 485 cables in the downlink channel of the acquisition terminal. Instead, connect the switch through an Ethernet connection cable, and connect to each merging unit through the switch. The uplink channel of the collection terminal generally uses a dedicated Ethernet to connect with the local end switch in the communication room of the ground survey; the old-fashioned substation and the smart substation The power data information collection network is shown in Figure 1.

According to the existing electric energy data acquisition network of old-fashioned substations and smart substations, no matter the type of substation, each substation needs a collection terminal for centralized data collection, and the cost of collection terminals is relatively high, which will bring great harm to the power grid. Larger financial burden.

Contents of the invention

The purpose of the present invention is to provide a substation power data information collection network with low cost, high reliability and simple communication network topology.

The substation power data information collection network provided by the present invention includes a collection master station, a central office switch, an electric energy meter in an ordinary substation, a merging unit in an intelligent substation, and an in-station switch connected to the merging unit, as well as a collection terminal and RS485 Ethernet module; the RS485 to Ethernet module is connected to the energy meter of the ordinary substation through the RS485 bus, and connected to the local switch through the Ethernet. The RS485 to Ethernet module is used to read the data of the energy meter through the RS485 bus, and through The Ethernet is sent to the central office switch; the intra-station switch in the smart substation is directly connected to the central office switch through Ethernet; the collection terminal is connected between the collection master station and the central office switch to simulate file configuration and protocol analysis of multiple substations , Electric energy data collection and storage and forwarding to the collection master station, or used to receive the command sent by the collection master station and parse it and forward it to the central office switch.

Both the collection terminal and the central office switch are set in the communication room of the ground survey.

The collection terminal is an industrial computer.

The connection between the collection terminal and the collection master station is an Ethernet connection.

The connection between the collection terminal and the central office switch is an Ethernet connection.

The substation electric energy data information acquisition network provided by the present invention can directly convert the electric energy data of ordinary substations into Ethernet data for transmission by adding an RS485 to Ethernet module, thus replacing the acquisition terminals of ordinary substations; The original acquisition terminal in the center is canceled, and the acquisition terminal is added between the central office switch and the acquisition master station, which reduces the arrangement of acquisition terminals in the smart substation and the ordinary substation; the function of the acquisition terminal is realized on the industrial computer, and finally a single industrial control terminal is realized. computer and RS485 to Ethernet module to replace the purpose of collecting terminals in multiple substations, thereby saving the arrangement cost of collecting terminals in the substation and greatly reducing the arrangement cost of the substation electric energy data information acquisition network; and the substation provided by the present invention The power data information collection network has very little change to the existing substation power data collection network, and has excellent applicability, and the network topology is simple and mature, which still ensures the reliability of the network on the basis of greatly saving costs.

Description of drawings

FIG. 1 is a schematic diagram of a topology structure of a substation power data information collection network in the background technology.

Fig. 2 is a schematic diagram of the topology of the substation power data information collection network of the present invention.

detailed description

As shown in Figure 2, it is a schematic diagram of the topology of the substation power data information acquisition network of the present invention: as can be seen from the figure, for the old-fashioned common substation, the power data of the substation is measured by electric energy meters, and several electric energy meters are all passed through the RS485 bus Connected to the RS485 bus-to-Ethernet module, the energy meter also transmits the measured energy data to the RS485 bus-to-Ethernet module through the RS485 bus, and is converted into Ethernet communication data by the RS485 bus-to-Ethernet module, which is transmitted to the On the central office switch; and for the new smart substation, the power data is measured through the merging unit, and several merging units are connected to the switch in the station through Ethernet, and the power metering data is also sent to the switch in the station through Ethernet, and then the switch in the station It is sent to the central office switch through Ethernet; the central office switch is arranged in the communication room of the local dispatcher to receive the electric energy measurement data uploaded by the old ordinary substation and the new smart substation, and forward it to the collection terminal; the collection terminal can also be set at the local dispatcher In the communication room, it is used to analyze the power data collected by the central office switch and forward it to the collection master station, or to receive the command sent by the collection master station and forward it to the central office switch after analysis. The acquisition terminal can be an industrial computer.

The present invention realizes the collection of electric energy information of multiple intelligent substations or multiple ordinary substations by one terminal, and the newly established substation does not need to install collection terminals in the substation, which saves equipment investment and reduces the workload of equipment maintenance; secondly , In ordinary substations, the original collection terminal is replaced by the RS485 to Ethernet module, which can save the collection terminal, and also reduce equipment investment and maintenance workload. Moreover, the network topology of the scheme of the present invention is simple and reliable, and has excellent applicability.

Claims (5)

1. a substation electric energy data information acquisition network, including collecting master station, central office switch, electric energy meter in the common substation, the merging unit in the intelligent substation and, the in-station switch and the collecting terminal that the merging unit is connected, it is characterized in that also comprising RS485-to-Ethernet module; RS485-to-Ethernet module is connected to the electric energy meter of the ordinary substation through the RS485 bus, and connected to the central office switch through the Ethernet. The RS485-to-Ethernet module is used to read the data of the electric energy meter through the RS485 bus, and Send it to the central office switch through Ethernet; the intra-station switch in the smart substation is directly connected to the central office switch through Ethernet; the collection terminal is connected between the collection master station and the central office switch to analyze the power data collected by the central office switch And forward it to the collection master station, or to receive the command sent by the collection master station and forward it to the central office switch after parsing it. 2. The substation electric energy data information collection network according to claim 1, characterized in that both the collection terminal and the central office switch are set in the ground dispatching communication room. 3. The substation power data information collection network according to claim 1, characterized in that said collection terminal is an industrial computer. 4. The substation power data information collection network according to any one of claims 1 to 3, characterized in that the connection between the collection terminal and the collection master station is an Ethernet connection. 5. The substation electric energy data information collection network according to any one of claims 1 to 3, characterized in that the connection between the collection terminal and the central office switch is an Ethernet connection.