CN201393089Y - Monitoring system for the operation status of secondary equipment in digital substation - Google Patents

Abstract

The utility model relates to the technical field of substations. Disclosed is a monitoring system for the operation status of secondary equipment in digital substations. The system includes several secondary equipment in digital substations and station control layer equipment. The secondary equipment directly or indirectly communicates with the station control layer equipment through their respective network message recording equipment. connected, the system also includes a state monitoring device and a number of network analyzers corresponding to the network message recording equipment, the network analyzers are respectively connected to the corresponding network message recording equipment, and the state monitoring device is connected to the network message recording equipment respectively Each network analyzer is connected to the station control layer equipment through communication. The utility model can fully meet the requirements of digital substation status monitoring by adding corresponding network analyzers and state monitoring devices to the existing digital substation comprehensive automation communication network, and furthermore, it is a digital substation condition maintenance system established on this basis. , life cycle cost management and other advanced applications provide relevant data support.

Description

Monitoring system for the operation status of secondary equipment in digital substation

technical field

The utility model relates to the technical field of substations, in particular to a monitoring system for the operation status of secondary equipment in digital substations.

Background technique

As digital substations go from theory to reality, newly established digital substations are already under construction and put into use. The operating status of secondary equipment and network equipment such as protection\measurement and control devices, network message recording equipment, communication networks, and protection substations will directly affect the operation safety of the entire digital substation. Because the data and information of the telecontrol terminal and the telecontrol host are exchanged on the digital substation comprehensive automation data network through the IEC61850 protocol, the system is shown in Figure 1, and all the information of the status monitoring of the secondary equipment and network equipment can be It has been acquired, and already has the technical basis to realize the condition monitoring of secondary equipment.

At present, some technologies and devices in the power system have actually more or less involved in condition monitoring. The main monitoring objects are important power equipment in power plants and power systems, especially in primary power equipment, such as transformers, generators, motors, etc. , cables, circuit breakers and other electrical machinery. Although they can serve a certain purpose of condition monitoring, they cannot fully meet the requirements of digital substation condition monitoring.

Utility model content

In view of this, the technical problem to be solved by this utility model is to provide a monitoring system for the operation status of the secondary equipment of the digital substation, which can fully meet the requirements of the status monitoring of the digital substation, and can be used for the condition maintenance of the digital substation established on this basis. System, life cycle cost management and other advanced applications provide relevant data support.

In order to solve the problems of the technologies described above, the utility model adopts the following technical solutions:

A monitoring system for the operation status of secondary equipment in digital substations, including a number of secondary equipment in digital substations and station control layer equipment. The secondary equipment is directly or indirectly connected to the station control layer equipment through their respective network message recording equipment. The monitoring system also includes a state monitoring device and a number of network analyzers corresponding to the network message recording equipment, the network analyzers are respectively connected to the corresponding network message recording equipment, and the state monitoring device is connected to the network message recording equipment respectively. Describe the communication connection between each network analyzer and station control layer equipment.

The secondary equipment includes an intelligent operation box, a merging unit and a protection/measurement and control device, and the network message recording equipment includes a GOOSE switch, an SMV switch and a main control room switch, wherein the intelligent operation box communicates with the The protection/measurement and control device is connected to the network, the merging unit is connected to the network of the protection/measurement and control device through the SMV switch, and the protection/measurement and control device is connected to the network of the station control layer equipment through the main control room switch.

Described network analyzer comprises GOOSE analyzer, SMV analyzer and MMS analyzer, wherein, described SMV analyzer is communicated with SMV switchboard, and described GOOSE analyzer is connected with described GOOSE switchboard, and described MMS analyzer is communicated with The switch in the main control room is connected in communication, and the SMV analyzer, GOOSE analyzer and MMS analyzer are respectively connected in communication with the state monitoring device.

The station control layer equipment includes an operator station, a background host and a telecontrol host, the operator station, the background host and the telecontrol host are respectively connected to the main control room switch network, and the telecontrol host is also connected to the status monitoring Device communication connection.

The beneficial effects of the utility model:

The utility model can fully meet the requirements of digital substation status monitoring by adding corresponding network analyzers and state monitoring devices to the existing digital substation comprehensive automation communication network, and furthermore, it is a digital substation condition maintenance system established on this basis. , life cycle cost management and other advanced applications provide relevant data support.

Description of drawings

Figure 1 is a schematic diagram of the communication network of the existing digital substation comprehensive automation;

Fig. 2 is a schematic diagram of the communication network of the monitoring system for the operation status of the secondary equipment in the digital substation of the present invention.

In the figure: 1-state monitoring device, 2-intelligent operation box, 3-merging unit, 4-protection/measurement and control device, 51-GOOSE switch, 52-SMV switch, 53-main control room switch, 61-GOOSE analyzer, 62-SMV analyzer, 63-MMS analyzer, 71-operator station, 72-background host, 73-telecontrol host.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described clearly and completely:

Please refer to FIG. 2 , which is a schematic diagram of the communication network of the monitoring system for the operation status of the secondary equipment in the digital substation of the present invention. This monitoring system for the operation status of secondary equipment in digital substations includes several digital substation secondary equipment and station control layer equipment. The secondary equipment is directly or indirectly connected to the station control layer equipment through their respective network message recording equipment. The system also includes a state monitoring device 1 and a number of network analyzers corresponding to the network message recording equipment, the network analyzers are respectively connected to the corresponding network message recording equipment, and the state monitoring device 1 is connected to the network message recording equipment respectively. Describe the communication connection between each network analyzer and station control layer equipment.

In this embodiment, the secondary equipment includes an intelligent operation box 2 , a merging unit 3 and a protection/measurement and control device 4 . The intelligent operation box 2 is equivalent to a traditional operation box, except that the received relay signal is changed into a digital signal. The merging unit 3 refers to a device for converting an analog electric quantity signal into a digital electric quantity signal when a traditional current transformer CT is used. The protection/measurement and control device 4 refers to a new type of digital protection and measurement and control device. The network message recording equipment includes a GOOSE switch 51, an SMV switch 52 and a main control room switch 53. Wherein, the intelligent operation box 2 is connected to the protection/measurement and control device 4 through a GOOSE switch 51 through a network. The merging unit 3 is network-connected to the protection/measurement and control device 4 through an SMV switch 52 . The protection/measurement and control device 4 is directly connected to the network of the station control layer equipment through the switch 53 in the main control room. Wherein, the intelligent operation box 2 is indirectly connected to the station control layer equipment through the GOOSE switch 51 , the protection measurement and control device 4 and the main control room switch 53 in sequence.

The network analyzers include GOOSE analyzer 61 , SMV analyzer 62 and MMS analyzer 63 . The SMV analyzer 62 is communicatively connected with the SMV switch 52, the GOOSE analyzer 61 is communicatively connected with the GOOSE switch 51, the MMS analyzer 63 is communicatively connected with the main control room switch 53, and the SMV analyzer Instrument 62, GOOSE analyzer 61 and MMS analyzer 63 are also respectively connected to the state monitoring device 1 by communication. Among them, each network analyzer is a necessary part of the digital substation, and the monitoring system for the operation status of the secondary equipment in the digital substation is a system based on the functions of the network analyzer. Each network analyzer is a monitoring and reading device for data exchange of network message recording equipment in the communication network. The state monitoring device 1 is a device for monitoring, classifying and forwarding data in the substation communication network.

The station control layer equipment includes an operator station 71, a background host 72 and a telecontrol host 73, and the operator station 71, the background host 72 and the telecontrol host 73 are connected to the network of the main control room switch 53 respectively, and the telecontrol The host computer 73 is also communicatively connected with the condition monitoring device 1 . The state monitoring device 1 can monitor, classify and forward the data on the digital substation comprehensive automation data network to the remote control host 73 . The data and information of the operator station 71, the background host 72 and the telecontrol host 73 can all exchange information on the digital substation integrated automation data network through the IEC61850 protocol.

The data exchange and operation information of the optical CT, optical PT, data merging unit 3, protection\measurement and control device 4, digital circuit breaker, operator station 71, background host 72, and telecontrol host 73 of the digital substation are all passed the IEC61850 protocol in the digital substation The integrated automation data network is carried out. The operation status and operation information of the data communication network and its network message recording equipment (including network switches, recorders), network analyzers and other network equipment are also exchanged on the digital substation comprehensive automation data network through the IEC61850 protocol. For primary equipment that does not have digital communication capabilities, such as transformers, generators, motors, cables, circuit breakers and other electrical machinery, as long as there are related operating status monitoring devices, relevant data can also be digitized after using the IEC61850 protocol. Exchange on the substation integrated automation data network.

Through the network packet recording equipment, the transmission data of all devices on the communication network can be collected. Using the obtained data, the operating status, alarm information, fault records, and online detection data, control commands, communication status and other data of each set of devices can be classified and sorted through the network analysis and status monitoring device. After the format conversion is completed, the information processing mechanism is uploaded to the dispatching center through the telecontrol host. Network analyzers and state monitoring devices can provide corresponding data information according to different application objects. For example, for the condition-based maintenance system, online detection data and operating conditions can be uploaded; for the life cycle cost management system, only the operating conditions of the equipment can be uploaded; for the advanced dispatching center, relevant online detection data and system operating conditions should be provided wait.

Please refer to Fig. 2, the method for monitoring the operation status of secondary equipment in digital substations using the monitoring system described above includes the following steps:

First, the network packet recording device collects the data of the secondary device connected to it. Through the network message recording equipment, the transmission data of all devices on the communication network can be collected, that is, the operating status, alarm information, fault records of each device, and online detection data, control commands, communication status and other data during system operation can be collected.

Secondly, the network analyzer monitors and reads the data transmitted by the respective network message recording equipment and transmits it to the state monitoring device 1 .

Finally, the state monitoring device 1 sorts the obtained data and forwards them to the station control layer equipment. The status monitoring device 1 can sort out the operating status, alarm information, fault records of each device, and online detection data, control commands, communication status and other data during system operation. , uploaded to the dispatch center through the telecontrol host 73.

Network analyzers and state monitoring devices can provide corresponding data information according to different application objects. For example, for the condition-based maintenance system, online detection data and operating conditions can be uploaded; for the life cycle cost management system, only the operating conditions of the equipment can be uploaded; for the advanced dispatching center, relevant online detection data and system operating conditions should be provided wait.

In this utility model, except for the digital substation status monitoring device, ready-made equipment is used. The proposed digital substation status monitoring system is a method and means for establishing status monitoring using existing equipment, so it is beneficial to implementation and promotion.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the utility model belongs can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims (4)

1. the monitoring system of an operation condition of digitalized substation secondary device, comprise number of digital substation secondary device and station level equipment, described secondary device directly or indirectly is connected with station level equipment by network message recording equipment separately, it is characterized in that: described monitoring system also comprises state monitoring apparatus and the corresponding network analyzer of some and described network message recording equipment, described network analyzer is connected with corresponding network message recording equipment separately respectively, and described state monitoring apparatus is connected with the station level device talk with described each network analyzer respectively.

2. the monitoring system of operation condition of digitalized substation secondary device as claimed in claim 1; it is characterized in that: described secondary device comprises intelligent operation box; merge cells and protection/measure and control device; described network message recording equipment comprises the GOOSE switch; SMV switch and master-control room switch; wherein; described intelligent operation box is connected with described protection/measure and control device network by the GOOSE switch; described merge cells is connected with described protection/measure and control device network by the SMV switch, and described protection/measure and control device is connected with described station level device network by the master-control room switch.

3. the monitoring system of operation condition of digitalized substation secondary device as claimed in claim 2, it is characterized in that: described network analyzer comprises GOOSE analyzer, SMV analyzer and MMS analyzer, wherein, described SMV analyzer is connected with the communication of SMV switch, described GOOSE analyzer is connected with the communication of described GOOSE switch, described MMS analyzer is connected with the communication of described master-control room switch, and described SMV analyzer, GOOSE analyzer and MMS analyzer also are connected with described state monitoring apparatus communication respectively.

4. the monitoring system of operation condition of digitalized substation secondary device as claimed in claim 2, it is characterized in that: described station level equipment comprises operator station, background host computer and telemechanical main frame, described operator station, background host computer and telemechanical main frame are connected with the master-control room switch network respectively, and described telemechanical main frame also is connected with described state monitoring apparatus communication.

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