CN207163641U - GIS device SF6 on-line monitoring systems - Google Patents

Abstract

A GIS equipment SF6 online monitoring system relates to a monitoring field. At present, the GIS equipment SF6 online monitoring system often has data errors and inaccuracies. The utility model comprises a manual transcription data input device for manual transcription data input, a temperature collection device for temperature collection, an air pressure collection device and a preprocessor for air pressure collection, a pressure collection device, a manual transcription data input device, a temperature The acquisition device and the air pressure acquisition device are connected to the input end of the preprocessor, and the output end of the preprocessor is connected to the pressure monitoring device. The pressure acquisition device includes a plurality of SF6 pressure monitors, and each air chamber of the GIS equipment is equipped with There is a SF6 pressure monitor to collect the pressure value of each air chamber. This technical solution monitors the air pressure of each air chamber, improves the safety of the GIS equipment in the substation, reduces the impact of the environment in many ways, and removes the impact of damage to the pressure monitor.

Description

GIS equipment SF6 online monitoring system

technical field

The invention relates to a monitoring field, in particular to a GIS equipment SF6 online monitoring system.

Background technique

The main online monitoring equipment in the substation includes transformer (high resistance) oil chromatography, iron core, clamp grounding current online monitoring, transformer, GIS equipment partial release online monitoring, circuit breaker and GIS equipment SF ₆ pressure online monitoring, etc. ^[1] . With the popularization of GIS equipment application, the application of SF ₆ pressure online monitoring function is also increasing. Especially in UHV substations, due to its large capacity, long distance, and cross-regional power transmission, a large number of high-voltage GIS electrical equipment is used, and its SF6 gas pressure and performance will directly affect the safety of UHV electrical equipment.

At present, SF6 online monitoring devices in substations generally upload the collected data to the monitoring system, and the monitoring system uses the collected data to display and compare with the set alarm value. When the pressure is lower than the alarm value, it will alarm, that is, only It can realize SF ₆ pressure display and over-limit alarm. This method does not fully process and mine the collected data, so that some relatively hidden defects or slow development of defects cannot be discovered in time. For example, the pressure of SF ₆ gas in a gas chamber of an UHV substation GIS has been on a downward trend, but because the rate of decline is very slow, and after several months of leakage, the pressure value is still greater than the rated pressure, so the monitoring system has not Call the police. The above problems affect the safety of high-voltage electrical equipment and urgently need to be improved.

Moreover, the pressure data collected by the online monitoring sensor probe is relative pressure, without considering the change of atmospheric pressure. Some sensors do not consider the temperature factor, and the collected data will fluctuate greatly as the temperature changes. In addition, due to problems such as probes in the online monitoring system, data errors often occur, resulting in inaccurate data.

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, and to provide a GIS equipment SF6 online monitoring system to achieve the purpose of improving the safety of high-voltage electrical equipment. For this reason, the present invention takes the following technical solutions.

GIS equipment SF6 online monitoring system, including the pressure acquisition device set on the GIS equipment of the substation, the pressure monitoring device used for pressure monitoring, and the alarm device connected with the pressure monitoring device, it is characterized in that: it also includes a manual transcription data input Manual transcription data input device, temperature acquisition device for temperature acquisition, air pressure acquisition device and preprocessor for air pressure acquisition, pressure acquisition device, manual transcription data input device, temperature acquisition device, air pressure acquisition device and preprocessor The input end is connected, and the output end of the preprocessor is connected with the pressure monitoring device, and the pressure acquisition device includes a plurality of SF6 pressure monitors, and each air chamber of the GIS equipment is provided with an SF6 pressure monitor to collect the pressure of each air chamber Pressure value. Preprocessors are used to remove corrupted pressure monitor data and to remove environmental effects. This technical solution monitors the air pressure of each air chamber to compare the pressure of two adjacent air chambers. When the pressure difference between the two air chambers exceeds the limit, an alarm can be issued to detect the air leakage of a single air chamber in time and improve the efficiency of the substation. Safety of GIS equipment work. The pressure comparison of adjacent air chambers can be realized through a comparison circuit, which has a simple structure and reliable operation. Through the collection of temperature and atmospheric pressure, the influence of the environment is reduced in many ways, the automatic input of the pressure acquisition device and the manual input of the manual transcription data input device, to remove the influence of damage to the pressure monitor.

As a further improvement and supplement to the above technical solutions, the present invention also includes the following additional technical features.

Further, when the substation GIS equipment is 1000KV GIS equipment, each 1000kV GIS circuit breaker unit is equipped with a junction box, which is used to connect all SF6 pressure monitors of this circuit breaker unit. It is beneficial to improve the reliability of work.

Further, the junction box is set in an SF6 online monitoring system cabinet, and the SF6 online monitoring system cabinet is connected to 1000kV GIS status monitoring information, and the SF6 online monitoring system cabinet is provided with a device for uploading the 1000kV GIS status monitoring information to The communication device of the integrated monitoring system.

Further, when the substation GIS equipment is 500kV GIS equipment, each 500kV GIS circuit breaker unit is equipped with one SF6 monitoring sub-IED, and at the same time configures one 500kV SF6 online monitoring main IED, 500kV SF6 online monitoring main IED and SF6 monitoring sub-IED The connection is used to aggregate status monitoring information and upload it to the integrated monitoring system.

Further, the pressure monitoring device is provided with a pressure comparison circuit of adjacent air chambers. The pressure monitoring device monitors from multiple angles and can detect abnormalities in time to ensure the stability of its working pressure.

Beneficial effect:

1. This technical solution realizes the effective monitoring of the pressure of each air chamber, monitors and analyzes the pressure from multiple angles, detects small changes in the pressure of the air chamber in time, and detects defects before the equipment occurs in serious situations such as low pressure alarms. It is beneficial to deal with hidden dangers of equipment safety in advance.

2. By collecting temperature and atmospheric pressure, the impact on the environment can be reduced in many ways.

3. The automatic input of the pressure acquisition device and the manual input of the manual transcription data input device are used to remove the influence of damage to the pressure monitor and improve the accuracy of monitoring.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a structural schematic diagram of an embodiment of the present invention.

Detailed ways

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the GIS equipment SF6 online monitoring system includes a pressure acquisition device located on the substation GIS equipment, a pressure monitoring device connected to the pressure acquisition device, an alarm device connected to the pressure monitoring device, and the pressure monitoring device A pressure over-limit judging module is provided, and the pressure acquisition device includes a plurality of SF6 pressure monitors, and each air chamber of the GIS equipment is provided with an SF6 pressure monitor to collect the pressure value of each air chamber, and the pressure monitor The device is also provided with a pressure comparison circuit of adjacent air chambers. This technical solution monitors the air pressure of each air chamber, and adds a pressure comparison circuit for adjacent air chambers, and compares the pressures of two adjacent air chambers. When the pressure difference between the two air chambers exceeds the limit, it can alarm and find a single air chamber in time. Air leakage situation, improve the safety of substation GIS equipment work. The ratio of adjacent air chamber pressures can be realized by comparison circuit. The structure is simple and the work is reliable. Effective monitoring of the pressure of each air chamber, monitoring and analysis of the pressure from multiple angles, timely detection of small changes in the pressure of the air chamber, and detection of defects before serious conditions such as low pressure alarms occur in the equipment, which is conducive to early treatment of equipment safety Hidden danger. By collecting temperature and atmospheric pressure, the impact on the environment can be reduced in many ways. The automatic input of the pressure acquisition device and the manual input of the manual transcription data input device remove the influence of damaged pressure monitors and effectively improve the accuracy of monitoring.

As shown in Figure 2, each gas chamber of a 1000kV GIS in an UHV substation is equipped with a SF ₆ pressure monitor, a total of 418, and each 1000kV GIS circuit breaker unit is equipped with a junction box for connecting to this circuit breaker unit All SF ₆ pressure monitors. At the same time, one SF ₆ online monitoring system cabinet is configured, which is used to access 1000kV GIS status monitoring information and upload it to the integrated monitoring system.

Each gas chamber of the 500kV GIS is equipped with one SF ₆ gas pressure monitoring device, a total of 105, and each 500kV GIS circuit breaker unit is equipped with one SF ₆ monitoring sub-IED. At the same time, a 500kV SF ₆ online monitoring main IED is configured to aggregate status monitoring information and upload it to the integrated monitoring system.

The integration method of the online monitoring system is as follows: the SF ₆ pressure online monitoring system is independently networked in Zone II, the information data is connected to the comprehensive application server using the DL/T860 (IEC 61850) protocol, and the communication gateway in Zone II adopts the DL/T634.5104 protocol and Dispatch communication at all levels and transmit online monitoring information.

In order to improve security, the GIS equipment SF6 online monitoring system is independently networked in Zone II, and the information data is connected to the comprehensive application server using the DL/T860 (IEC 61850) protocol, and the communication gateway in Zone II adopts the DL/T634. Scheduling communications, transmission of online monitoring information.

The GIS equipment SF6 on-line monitoring system shown in above Fig. 1-2 is the concrete embodiment of the present invention, has embodied the substantive characteristics and the progress of the present invention, can according to actual use needs, under the enlightenment of the present invention, it can carry out Equivalent modifications in aspects such as shape and structure are all within the scope of protection of this proposal.

Claims (5)

1.GIS equipment SF6 on-line monitoring systems, including pressure acquisition device in transformer station's GIS device, supervise for pressure The pressure monitoring device of survey, the warning device being connected with pressure monitoring device, it is characterised in that：Also include being used to manually make a copy of number Adopted according to artificial copy data input unit, the temperature collecting device for temperature acquisition, the air pressure for air pressure acquisition of input Acquisition means and preprocessor, pressure acquisition device, artificial copy data input unit, temperature collecting device, air pressure acquisition devices It is connected with the input of preprocessor, the output end of preprocessor is connected with pressure monitoring device, described pressure acquisition device Including multiple SF6 pressure monitors, each air chamber of GIS device is equipped with a SF6 pressure monitors to gather each air chamber Pressure value.

2. GIS device SF6 on-line monitoring systems according to claim 1, it is characterised in that：When transformer station, GIS device is During 1000KV GIS devices, each 1000kV GIS breaker units configure 1 terminal box, for accessing this breaker unit institute There are SF6 pressure monitors.

3. GIS device SF6 on-line monitoring systems according to claim 2, it is characterised in that：Described terminal box is located at one In SF6 on-line monitoring system cabinets, SF6 on-line monitoring systems cabinet accesses 1000kV GIS status monitoring informations, and described SF6 is online Monitoring system cabinet is provided with the communication device for being used for that 1000kV GIS status monitoring informations to be uploaded to integrated monitoring system.

4. GIS device SF6 on-line monitoring systems according to claim 3, it is characterised in that：When transformer station, GIS device is During 500kV GIS devices, each 500kV GIS breaker units configure 1 SF6 and monitor sub- IED, while configure 1 500kV SF6 monitors main IED on-line, and 500kV SF6 monitor main IED on-line and are connected with the sub- IED of SF6 monitorings for converging status monitoring letter Integrated monitoring system is uploaded to after breath.

5. the GIS device SF6 on-line monitoring systems according to claim 1-4 any claims, it is characterised in that：It is described Pressure monitoring device be provided with adjacent air cells pressure comparison circuit.