CN103151844A - State monitoring system for transformer and GIS (gas insulated switchgear) in transformer substation - Google Patents

本发明公开了一种用于变电站中变压器和GIS的状态监测系统，包括变压器、连接该变压器的若干第一智能电子设备、GIS、连接该GIS的若干第二智能电子设备、分别连接各第一智能电子设备和各第二智能电子设备的交换机以及连接所述交换机上位机；每个第一智能电子设备均包括第一传感器、第一滤波器、第一信号放大器、第一A/D转换器、DSP、第一FPGA、第一电源和第一RAM；每个第二智能电子设备均包括第二传感器、第二滤波器、第二信号放大器、第二A/D转换器、MCU、第二FPGA、第二电源和第二RAM。本发明通过对采集信号进行滤波、放大等处理，避免了因电磁干扰而造成的采集信号缺失、结果不准确的情况。

The invention discloses a state monitoring system for a transformer and a GIS in a substation, comprising a transformer, a plurality of first intelligent electronic devices connected to the transformer, a GIS, a plurality of second intelligent electronic devices connected to the GIS, and connected to each first intelligent electronic device respectively. The switch of the smart electronic device and each second smart electronic device and the upper computer connected to the switch; each first smart electronic device includes a first sensor, a first filter, a first signal amplifier, and a first A/D converter , DSP, a first FPGA, a first power supply, and a first RAM; each second intelligent electronic device includes a second sensor, a second filter, a second signal amplifier, a second A/D converter, an MCU, a second FPGA, second power supply and second RAM. The present invention avoids the lack of collection signals and inaccurate results caused by electromagnetic interference by performing filtering, amplification and other processing on the collection signals.

A kind of condition monitoring system for transformer station's transformer and GIS

Technical field

The present invention relates to a kind of condition monitoring system, relate in particular to a kind of for transformer station's transformer and GIS(GAS INSULATED SWITCHGEAR, gas-insulating and fully-enclosed combined electrical apparatus) condition monitoring system.

Background technology

Transformer is relative two kinds of important equipment in transformer station with GIS, and therefore their stable operation to the construction meaning of intelligent substation very need to carry out Real-Time Monitoring to their running status.Traditional monitoring implementation more complicated needs special checkout equipment to realize, and is with high costs, and because the High Voltage magnetic field environment that exists in transformer station, easily be subjected to electromagnetic interference, thereby cause the situations such as data acquisition signal disappearance, can not obtain testing result accurately.

Summary of the invention

The object of the present invention is to provide a kind ofly be easy to realize, the condition monitoring system that is used for transformer station's transformer and GIS with low cost, can carry out to collection signal the processing such as filtering, amplification, and adopt non-interfering multi pass acquisition mode, thereby the collection signal of having avoided causing because of electromagnetic interference disappearance, the inaccurate situation of result.

The technical scheme that realizes above-mentioned purpose is:

A kind of condition monitoring system for transformer station's transformer and GIS, it is characterized in that, comprise transformer, connect this transformer some the first intelligent electronic devices (IED), GIS, connect some the second intelligent electronic devices, switch and the host computer of this GIS, wherein:

Described switch connects respectively each first intelligent electronic device and each second intelligent electronic device;

Described host computer connects described switch;

Described each first intelligent electronic device includes first sensor, the first filter, first signal amplifier, an A/D(mould/number) transducer, DSP(Digital Signal Processing, digital signal processor), a FPGA(Field-Programmable Gate Array, field programmable gate array), the first power supply and a RAM(random access memory, random asccess memory), wherein:

Described first sensor connects described transformer;

Described first sensor, the first filter, first signal amplifier, the first A/D converter, DSP and a FPGA connect successively;

Described the first power supply connects respectively described DSP and a FPGA;

A described RAM connects a described FPGA;

A described FPGA connects described switch;

Described each second intelligent electronic device includes the second transducer, the second filter, secondary signal amplifier, the second A/D converter, MCU(microprocessor), the 2nd FPGA, second source and the 2nd RAM, wherein:

Described the second transducer connects described GIS;

Described the second transducer, the second filter, secondary signal amplifier, the second A/D converter, MCU and the 2nd FPGA connect successively;

Described second source connects respectively described MCU and described the 2nd FPGA;

Described the 2nd RAM connects described the 2nd FPGA;

Described the 2nd FPGA connects described switch.

The invention has the beneficial effects as follows: the present invention realizes the collection to GIS and each operational factor of transformer by the mode of multi pass acquisition, and passes through the mutual of switch, finally realizes data analysis and outcome evaluation by host computer.Simultaneously, the present invention carries out a series of preliminary treatment by filter, signal amplifier and A/D converter to collection signal, has avoided the collection signal disappearance, the inaccurate situation of result that cause because of electromagnetic interference.And compared to the traditional monitoring device, the present invention is simple in structure, be easy to realize and with low cost to have very high practicality.

Description of drawings

Fig. 1 is the structural representation of the condition monitoring system for transformer station's transformer and GIS of the present invention;

Fig. 2 is the structural representation of the first intelligent electronic device in the present invention;

Fig. 3 is the structural representation of the second intelligent electronic device in the present invention.

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

Switch 5 connects respectively each the first intelligent electronic device 2 and each second intelligent electronic device 4;

The one RAM28 connects a described FPGA26;

The 2nd RAM48 connects the 2nd FPGA46;

1. condition monitoring system that is used for transformer station's transformer and GIS, it is characterized in that, comprise transformer, connect this transformer some the first intelligent electronic devices, GIS, connect some the second intelligent electronic devices, switch and the host computer of this GIS, wherein:

Described switch connects respectively each first intelligent electronic device and each second intelligent electronic device;

Described host computer connects described switch;

Described each first intelligent electronic device includes first sensor, the first filter, first signal amplifier, the first A/D converter, DSP, a FPGA, the first power supply and a RAM, wherein:

Described first sensor connects described transformer;

Described first sensor, the first filter, first signal amplifier, the first A/D converter, DSP and a FPGA connect successively;

Described the first power supply connects respectively described DSP and a FPGA;

A described RAM connects a described FPGA;

A described FPGA connects described switch;

Described each second intelligent electronic device includes the second transducer, the second filter, secondary signal amplifier, the second A/D converter, MCU, the 2nd FPGA, second source and the 2nd RAM, wherein:

Described the second transducer connects described GIS;

Described the second transducer, the second filter, secondary signal amplifier, the second A/D converter, MCU and the 2nd FPGA connect successively;

Described second source connects respectively described MCU and described the 2nd FPGA;

Described the 2nd RAM connects described the 2nd FPGA;

Described the 2nd FPGA connects described switch.