CN202948087U - Comprehensive monitoring system of transformer of electric power system - Google Patents

Comprehensive monitoring system of transformer of electric power system Download PDF

Info

Publication number
CN202948087U
CN202948087U CN 201220669269 CN201220669269U CN202948087U CN 202948087 U CN202948087 U CN 202948087U CN 201220669269 CN201220669269 CN 201220669269 CN 201220669269 U CN201220669269 U CN 201220669269U CN 202948087 U CN202948087 U CN 202948087U
Authority
CN
China
Prior art keywords
logic node
monitoring
transformer
module
iec
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220669269
Other languages
Chinese (zh)
Inventor
赵忠
黎波
彭锦凤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN CITY SHUANGHE ELECTRIC CO Ltd
Original Assignee
SHENZHEN CITY SHUANGHE ELECTRIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN CITY SHUANGHE ELECTRIC CO Ltd filed Critical SHENZHEN CITY SHUANGHE ELECTRIC CO Ltd
Priority to CN 201220669269 priority Critical patent/CN202948087U/en
Application granted granted Critical
Publication of CN202948087U publication Critical patent/CN202948087U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A comprehensive monitoring system of a transformer of an electric power system comprises an IEC 61850-based unified CPU hardware platform employing a modularization design; sensors; a system terminal; and at least one of nine types of monitoring logic devices (LDs) which start and realize corresponding mutually-independent monitoring functions of the respective LDs through software configuration, respectively conduct independent and effective data acquisition of the transformer, and let the CPU perform integration and processing of the data, thereby realizing the configurable comprehensive monitoring of the transformer of the electric power system. The comprehensive monitoring system further comprises an expert analysis system comprising a heat management mathematical model and an oil-gas analysis mathematical model. According to the utility model, the system is convenient and flexible in project application; the system changes the current situation of repetition of data acquisition, absence of data integration and processing, and absence of information exchange and sharing; the system is beneficial for changing from traditional institution-based maintenance at regular time into state-based preventive maintenance; and the system substantially saves the maintenance cost, increases the service life of the transformer, and enables clients to greatly reduce the purchase cost and management cost.

Description

A kind of power system transformer comprehensive monitoring system
Technical field
The utility model relates to transformer, particularly relates to a kind of power system transformer comprehensive monitoring system.
Background technology
The transformer online monitoring monitoring is the early stage transformer fault of in time finding, realizes the unique channel of the preventive maintenance of state-based.Along with the development of intelligent grid, the on-line monitoring equipment of transformer will seem more and more important.In existing traditional transformer station, the supervising device of high-tension transformer comprises the smart machine of a lot of difference in functionalitys, these smart machines are provided by different manufacturers usually, independent operating, not only improved user's purchase cost, and bring a lot of inconvenience for the operation maintenance personnel, significantly increased handling cost.and before there is not yet cooling steering logic equipment (Logical Device, initialism is LD), hot spot temperature of winding is measured LD, electric parameters records LD, non electrical quantity monitoring for protection LD, iron core grounding current monitoring LD, sleeve pipe insulating monitoring LD, on-load voltage regulating switch (On Load Tape Changer, initialism is OLTC) monitoring LD, the function of oil dissolved gas monitoring LD and partial discharge monitoring LD (hereinafter to be referred as transformer control nine LD) is integrated in unified CPU hardware platform, according to (the International Electro technical Commission of International Electrotechnical Commission, initialism is IEC) the international standard IEC that is applied to substation communication network and system 61850 unified Modeling of promulgating, to realize the power system transformer comprehensively monitoring.
Summary of the invention
Technical problem to be solved in the utility model is the defective that makes up above-mentioned prior art, and a kind of power system transformer comprehensive monitoring system is provided.
Technical matters of the present utility model is solved by the following technical programs.
This power system transformer comprehensive monitoring system, be arranged on the power transformer side, comprise CPU hardware platform based on the unified employing modular design of IEC 61850, be connected the respective sensor that various image data are provided with power transformer, and adopt communication protocol to set up with remote server software the system terminal that data are connected, described system terminal be dispatching terminal with the substation PC of communicating by letter in a kind of, remote server software is installed.
The characteristics of this power system transformer comprehensive monitoring system are:
be provided with cooling control LD, the hot spot temperature of winding that comprises the hot spot temperature of winding measurement module is measured LD, the electric parameters that comprises the electric parameters logging modle records LD, the non electrical quantity monitoring for protection LD that comprises non electrical quantity monitoring for protection module, the iron core grounding current monitoring LD that comprises the iron core grounding current monitoring modular, the sleeve pipe insulating monitoring LD that comprises sleeve pipe insulating monitoring module, the OLTC monitoring LD that comprises on-load voltage regulating switch OLTC monitoring modular, the partial discharge monitoring LD that comprises the oil dissolved gas monitoring LD of oil dissolved gas monitoring modular and comprise the partial discharge monitoring module totally nine kinds of LD by the user wherein at least a kind according to the characteristics option and installment of on-the-spot needs and transformer, adopting separately, corresponding sensor connects described CPU, configure by software and start the monitoring function of realizing each accordingly separate LD, respectively transformer is carried out independent active data collection, carry out integrated to data and process by described CPU, and then realization is to the configurable comprehensively monitoring of power system transformer.
also be provided with the oil gas that comprises the heat management mathematical model that meets IEC 60076-7 standard and meet IEC 60599 standards and analyze the analysis expert system of mathematical model, described heat management mathematical model adopts coiling hot point of transformer temperature computation formula indirect calculation hot spot temperature of winding, described coiling hot point of transformer temperature computation formula is derived by the IEC 60076-7 standard of International Electrotechnical Commission, described oil gas is analyzed mathematical model, comprise the dissolved gas analysis method based on characteristic gas method and three-ratio method, described characteristic gas method is the difference according to main gas content and the secondary gas content of gas in oil, find that in time the inner latency fault that exists of transformer also can monitor the development of fault at any time, described three-ratio method is by calculating three kinds of ratios of C2H2/C2H4, CH4/H2, C2H4/C2H6, according to known coding rule and sorting technique, tables look-up and determines the nature of trouble of transformer.
Also be provided with same time source to the time parts, local real time data display unit, and networking parts.
Described same time source to the time parts comprise the RTC real time clock circuit that adopts the DS3232SN chip, with field programmable gate array (Field Programmable Gate Array, initialism is FPGA) acquisition module communication, carry out when system's deal with data accurately to the time, storage time information and time synchronized.
Described local real time data display unit comprises liquid crystal display (Liquid Crystal Display, initialism is LCD), pilot lamp, numeral and Menu key, directionkeys and acknowledgement key and function key, described pilot lamp comprises power light, run indicator, abnormal pilot lamp and alarm indicator, described numeral and Menu key comprise 1 Menu key and 10 numerical keys, and described directionkeys and acknowledgement key comprise upper and lower, left and right four direction key and 1 acknowledgement key; Described function key comprises reset key, grouping key and return key.
Described networking parts comprise that adopting communication protocol is the network interface of IEC 61850.
Technical matters of the present utility model is solved by following further technical scheme.
Described cooling control LD, its composition comprises the following compliance logic node according to IEC 61850-7-4 standard definition:
1) LLN0 logic node is used for providing other logical point example needed publicly-owned information;
2) LPHD physical equipment logic node is for the information that Whole Equipment is provided;
3) cooling group of steering logic node of at least one CCGR is used for controlling cooling device.
Described cooling control LD, its monitor procedure is as follows:
gather the transformer top-oil temperature from temperature sensor, or adopt the hot spot temperature of winding of described coiling hot point of transformer temperature computation formula indirect calculation, and gather load current from current sensor, form transformer top-oil temperature scope or coiling hot point of transformer temperature range, start the control strategy of corresponding cooling group of number, control cooling device by contactor and electrothermal relay, also manually selected the corresponding time period formation time scope of input on software interface by the client, start the control strategy of corresponding moving cooling group of number, control cooling device by contactor and electrothermal relay.
Described hot spot temperature of winding is measured LD, and it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SPTR logic node is used for hot spot temperature of winding and calculates; Perhaps at least one STMP logic node is used for the direct measurement of hot spot temperature of winding.
The described hot spot temperature of winding measurement LD that comprises the hot spot temperature of winding measurement module, its monitor procedure is as follows:
Comprise transformer top-oil temperature or environment temperature from temperature sensor collection, ratio in conjunction with transformer load electric current and transformer load side rated current is the transformer load factor, and transformer thermal characteristic parameter, calculate hot spot temperature of winding, show in real time and alarm output, the transformer thermal characteristic parameter comprises oily index x, winding index y, constant k 11, constant k 21, constant k 22, timeconstantτ 0, timeconstantτ w, loss ratio R, focus-top layer oil thermograde Δ θ hr, the stable state temperature rise Δ θ of top layer oil under nominal loss or
Described electric parameters records LD, and it also forms the following compliance logic node that comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) YPTR logic node is used for the monitoring of transformer active power, reactive power, applied power, power factor (PF), load factor.
Describedly comprise that the electric parameters of electric parameters logging modle records LD, its monitor procedure is as follows:
Comprise three-phase voltage, three-phase current signal from mutual inductor collection, active power, reactive power, applied power, power factor (PF) and load factor are calculated in statistical study, show in real time.
Described non electrical quantity monitoring for protection LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) at least one RBDR logic node is used for the monitoring of heavy gas, light gas switch protection action.
The described non electrical quantity monitoring for protection LD that comprises non electrical quantity monitoring for protection module, its monitor procedure is as follows:
Comprise the switch actuating signals of light/heavy gas alarming, heavy gas tripping operation from the collection of switch auxiliary contact, and gather transformer oil level information from fuel level sensor, show in real time and alarm output.
Described iron core grounding current monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) MMXN logic node is used for the monitoring of iron core grounding current.
The described iron core grounding current monitoring LD that comprises the iron core grounding current monitoring modular, its monitor procedure is as follows:
Comprise the iron core grounding current signal from leakage current sensor collection,, to whether existing multipoint earthing of iron core defective and the order of severity to make qualitative assessment show in real time and alarm output according to measurement result.
Described sleeve pipe insulating monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) at least one ZBSH logic node is for dielectric loss and the capacitance of monitoring sleeve.
The described sleeve pipe insulating monitoring LD that comprises sleeve pipe insulating monitoring module, its monitor procedure is as follows:
On operating voltage sensor and end shield leakage current sensor on the three-phase sleeve pipe that comprises the high, medium and low voltage side, synchronous acquisition comprises each work phase voltage end shield leakage current of sleeve pipe mutually from being arranged on, calculate the dielectric loss of each sleeve pipe and the cover pipe insulation index of capacitance, show in real time and alarm output.
Described OLTC monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SLTC logic node is used for the monitoring abnormal state that OLTC gear and OLTC comprise power fail, tripping.
The described OLTC monitoring LD that comprises the OLTC monitoring modular, its monitor procedure is as follows:
Comprise the power fail of OLTC gear and OLTC, the abnormality of tripping from the collection of OLTC on-load voltage regulating switch supervising device, show in real time and alarm output.
Described oil dissolved gas monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) a SIML insulating medium monitoring logic node, be used for the monitoring of transformer oil gas.
The described oil dissolved gas monitoring LD that comprises the oil dissolved gas monitoring modular, its monitor procedure is as follows:
Comprise H from integrated oil dissolved gas monitoring equipment or the collection of oil dissolved gas monitoring sensor 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2Totally eight kinds of gas contents of O, export corresponding current signal, when 4mA~20mA output current is arranged, directly be sent to the analog quantity channel of transformer synthesis supervising device by cable, the CPU that directly is sent to the transformer synthesis supervising device after the FPGA acquisition module is processed calculates H 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2The concentration of O; When without 4mA~20mA output current, be sent to by network on the CPU of transformer synthesis supervising device and process, Real-Time Monitoring H 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2O, and by characteristic gas method and three-ratio method, oil dissolved gas is analyzed, tentatively judge the operation conditions of transformer, show in real time and alarm output.
Described partial discharge monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SPDC logic node is used for the monitoring of partial discharge of transformer intensity, shelf depreciation phase place, shelf depreciation number of times information.
The described partial discharge monitoring LD that comprises the partial discharge monitoring module, its monitor procedure is as follows:
The information that comprises partial discharge intensity, shelf depreciation phase place and local discharge time from the collection of integrated partial discharge monitoring equipment or partial discharge monitoring sensor, export corresponding current signal, when 4mA~20mA output current is arranged, directly be sent to the analog quantity channel of transformer synthesis supervising device by cable, the CPU that directly is sent to the transformer synthesis supervising device after the FPGA acquisition process calculates value of consult volume and the alarm output that comprises partial discharge intensity, shelf depreciation phase place and local discharge time; When without 4mA~20mA output current, be sent to by network on the CPU of transformer synthesis supervising device and process, show in real time the value of consult volume and the alarm output that comprise partial discharge intensity, shelf depreciation phase place and local discharge time.
Technical matters of the present utility model is solved by following further technical scheme.
Carry out integrated to data and process by described CPU, that all LD collection signal unifications are undertaken by a monitor board, described monitor board comprises described CPU, FPGA acquisition module, and the corresponding relatively independent peripheral circuit of realizing each LD function and the interface of each LD.
Described CPU is used for Real-Time Monitoring and control transformer system, can with the backstage master server carry out to the time, networking and exchanges data, can be undertaken alternately by showing mouth, storage card, USB mouth, serial ports and network interface and external unit.
Described FPGA acquisition module is used for the switching value signal of device and Real-time Collection and the processing of analog signals, and the data-switching of carrying out local bus protocol with communicate by letter, complete real-time information to the accurate transmission of CPU module, the assurance Systems balanth is reliable, completes simultaneously the accurate time adjustment function of sampled data.
Described peripheral circuit and interface comprise the multiplex circuit of collection, analysis, control and the unified synchronous clock of analog input, switching value tablet, digital output module, direct current signal division board, monitor board.
Described analog input comprises that differential signal load module, sampling keep module, multichannel to select module, AD modular converter and bus interface.
Described switching value tablet comprises switching input module, CPLD control module, two-stage buffer module and bus interface.
Described digital output module comprises bus interface, CPLD control module and fault-tolerant retaking of a year or grade module, switching value output signal is delivered to digital output module by monitor board by the core bus interface, latch and pilot relay and fault-tolerant retaking of a year or grade module through the decoding of CPLD control module, thereby complete switching value output and switching value retaking of a year or grade.
The multiplex circuit of the collection of described monitor board, analysis, control and unified synchronous clock comprises bus design circuit, memory card interface circuit, usb circuit, serial interface circuit, RTC real time clock circuit and network interface design circuit.
The utility model beneficial effect compared with prior art is:
the utility model is integrated in same CPU hardware platform according to IEC 61850 standard unified Modeling with function relatively independent in transformer control, and the independent configuration tool of using of formation, simultaneously Different L D is managed concentratedly, realized power system transformer is comprised transformer control nine LD: cooling control LD, hot spot temperature of winding is measured LD, electric parameters records LD, non electrical quantity monitoring for protection LD, iron core grounding current monitoring LD, sleeve pipe insulating monitoring LD, OLTC monitors LD, the configurable comprehensively monitoring of the relatively independent LD function of oil dissolved gas monitoring LD and partial discharge monitoring LD.System has set up the analysis expert system that the oil gas that comprises the heat management mathematical model that meets IEC 60076-7 standard and meet IEC 60599 standards is analyzed mathematical model simultaneously, also have with same time source to the time and synchronizing function, also have local real time data and show and networking function.
The user only needs according to the characteristics of on-the-spot needs and transformer, concrete LD and related software to be carried out simply configuring getting final product when engineering is used, and need not the operation of any complexity, and engineering is used convenient, flexible.The utility model system has changed transformer control and has gathered, lacked data integration and processing, shortage message exchange and shared present situation with nine LD Data duplications, by to the analysis-by-synthesis of transformer control with nine LD functions, the diagnosis of realization to transformer " health status " eliminates fault in the budding stage.Real-time grasp to the transformer operation conditions, be conducive to safeguard to the preventive maintenance of state-based from traditional timing based on system and change, significantly save maintenance cost, and the serviceable life of improving transformer, the client can significantly reduce purchase cost and handling cost.The utility model system can be widely used in the various power system transformer condition monitoring occasions that power industry comprises generating, power transformation, distribution, to improve accuracy and the reliability of transformer monitoring result.
Description of drawings
Fig. 1 is the hardware structure diagram of the utility model embodiment;
Fig. 2 is the system frame structure figure of the utility model embodiment;
Fig. 3 is the course of work schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described.
A kind of as shown in Fig. 1~3 the power system transformer comprehensive monitoring system, be arranged on the power transformer side, comprise CPU hardware platform based on the unified employing modular design of IEC 61850, be connected the respective sensor that various image data are provided with power transformer, and adopt communication protocol to set up with remote server software the system terminal that data are connected, system terminal be dispatching terminal with the substation PC of communicating by letter in a kind of, remote server software is installed.CPU is used for Real-Time Monitoring and control transformer system, can with the backstage master server carry out to the time, networking and exchanges data, can be undertaken alternately by showing mouth, storage card, USB mouth, serial ports and network interface and external unit.
be provided with cooling control LD, the hot spot temperature of winding that comprises the hot spot temperature of winding measurement module is measured LD, the electric parameters that comprises the electric parameters logging modle records LD, the non electrical quantity monitoring for protection LD that comprises non electrical quantity monitoring for protection module, the iron core grounding current monitoring LD that comprises the iron core grounding current monitoring modular, the sleeve pipe insulating monitoring LD that comprises sleeve pipe insulating monitoring module, the OLTC monitoring LD that comprises on-load voltage regulating switch OLTC monitoring modular, the partial discharge monitoring LD that comprises the oil dissolved gas monitoring LD of oil dissolved gas monitoring modular and comprise the partial discharge monitoring module totally nine kinds of LD by the user wherein at least a kind according to the characteristics option and installment of on-the-spot needs and transformer, adopting separately, corresponding sensor connects described CPU, configure by software and start the monitoring function of realizing each accordingly separate LD, respectively transformer is carried out independent active data collection, carry out integrated to data and process by described CPU, with all LD collection signal unifications by comprising CPU, the FPGA acquisition module, and the corresponding relatively independent peripheral circuit of realizing each LD function of each LD and the monitor board of interface carry out integrated and process, and then realization is to the configurable comprehensively monitoring of power system transformer.
The FPGA acquisition module is used for the switching value signal of device and Real-time Collection and the processing of analog signals, and the data-switching of carrying out local bus protocol with communicate by letter, complete real-time information to the accurate transmission of CPU module, the assurance Systems balanth is reliable, completes simultaneously the accurate time adjustment function of sampled data.
Peripheral circuit and interface comprise the multiplex circuit of collection, analysis, control and the unified synchronous clock of analog input, switching value tablet, digital output module, direct current signal division board, monitor board.
Analog input comprises that differential signal load module, sampling keep module, multichannel to select module, AD modular converter and bus interface.
The switching value tablet comprises switching input module, CPLD control module, two-stage buffer module and bus interface.
Digital output module comprises bus interface, CPLD control module and fault-tolerant same read through model, switching value output signal is delivered to digital output module by monitor board by the core bus interface, latch and pilot relay and fault-tolerant retaking of a year or grade module through the decoding of CPLD control module, thereby complete switching value output and switching value retaking of a year or grade.
The multiplex circuit of the collection of monitor board, analysis, control and unified synchronous clock comprises bus design circuit, memory card interface circuit, usb circuit, serial interface circuit, RTC real time clock circuit and network interface design circuit.
Also be provided with the oil gas that comprises the heat management mathematical model that meets IEC 60076-7 standard and meet IEC 60599 standards and analyze the analysis expert system of mathematical model.The heat management mathematical model adopts the coiling hot point of transformer temperature computation formula indirect calculation hot spot temperature of winding by the IEC 60076-7 standard derivation of International Electrotechnical Commission; Oil gas is analyzed mathematical model, comprise the dissolved gas analysis method based on characteristic gas method and three-ratio method, the characteristic gas method is the difference according to main gas content and the secondary gas content of gas in oil, finds that in time the inner latency fault that exists of transformer also can monitor the development of fault at any time; Three-ratio method is by calculating three kinds of ratios of C2H2/C2H4, CH4/H2, C2H4/C2H6, according to known coding rule and sorting technique, tables look-up and determines the nature of trouble of transformer.
Also be provided with same time source to the time parts, local real time data display unit, and networking parts.
Same time source to the time parts comprise the RTC real time clock circuit that adopts the DS3232SN chip, communicate by letter with the FPGA acquisition module, carry out when system's deal with data accurately to the time, storage time information and time synchronized.
Local real time data display unit comprises LCD, pilot lamp, numeral and Menu key, directionkeys and acknowledgement key and function key, pilot lamp comprises power light, run indicator, the normal pilot lamp in boundary and alarm indicator, numeral and Menu key comprise 1 Menu key and 10 numerical keys, and directionkeys and acknowledgement key comprise upper and lower, left and right four direction key and 1 acknowledgement key; Function key comprises reset key, grouping key and return key.
The networking parts comprise that adopting communication protocol is the network interface of IEC 61850.
Cooling control LD, its composition comprise the following compliance logic node according to IEC 61850-7-4 standard definition:
1) LLN0 logic node is used for providing other logical point example needed publicly-owned information;
2) LPHD physical equipment logic node is for the information that Whole Equipment is provided;
3) cooling group of steering logic node of at least one CCGR is used for controlling cooling device.
Cooling control LD, its monitor procedure is as follows:
gather the transformer top-oil temperature from temperature sensor, or adopt the hot spot temperature of winding of described coiling hot point of transformer temperature computation formula indirect calculation, and gather load current from current sensor, form transformer top-oil temperature scope or coiling hot point of transformer temperature range, start the control strategy of corresponding cooling group of number, control cooling device by contactor and electrothermal relay, also manually selected the corresponding time period formation time scope of input on software interface by the client, start the control strategy of corresponding moving cooling group of number, control cooling device by contactor and electrothermal relay.
Hot spot temperature of winding is measured LD, and it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SPTR logic node is used for hot spot temperature of winding and calculates; Perhaps at least one STMP logic node is used for the direct measurement of hot spot temperature of winding.
The hot spot temperature of winding that comprises the hot spot temperature of winding measurement module is measured LD, and its monitor procedure is as follows:
Comprise transformer top-oil temperature or environment temperature from temperature sensor collection, ratio in conjunction with transformer load electric current and transformer load side rated current is the transformer load factor, and transformer thermal characteristic parameter, calculate hot spot temperature of winding, show in real time and alarm output, the transformer thermal characteristic parameter comprises oily index x, winding index y, constant k 11, constant k 21, constant k 22, timeconstantτ 0, timeconstantτ w, loss ratio R, focus-top layer oil thermograde Δ θ hr, the stable state temperature rise Δ θ of top layer oil under nominal loss or
Electric parameters records LD, and it also forms the following compliance logic node that comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) YPTR logic node is used for the monitoring of transformer active power, reactive power, applied power, power factor (PF), load factor.
The electric parameters that comprises the electric parameters logging modle records LD, and its monitor procedure is as follows:
Comprise three-phase voltage, three-phase current signal from mutual inductor collection, active power, reactive power, applied power, power factor (PF) and load factor are calculated in statistical study, show in real time.
Non electrical quantity monitoring for protection LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) at least one RBDR logic node is used for the monitoring of heavy gas, light gas switch protection action.
Comprise the non electrical quantity monitoring for protection LD of non electrical quantity monitoring for protection module, its monitor procedure is as follows:
Comprise the switch actuating signals of light/heavy gas alarming, heavy gas tripping operation from the collection of switch auxiliary contact, and gather transformer oil level information from fuel level sensor, show in real time and alarm output.
Iron core grounding current monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) MMXN logic node is used for the monitoring of iron core grounding current.
Comprise the iron core grounding current monitoring LD of iron core grounding current monitoring modular, its monitor procedure is as follows:
Comprise the iron core grounding current signal from leakage current sensor collection,, to whether existing multipoint earthing of iron core defective and the order of severity to make qualitative assessment show in real time and alarm output according to measurement result.
Sleeve pipe insulating monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) at least one ZBSH logic node is for dielectric loss and the capacitance of monitoring sleeve.
Comprise the sleeve pipe insulating monitoring LD of sleeve pipe insulating monitoring module, its monitor procedure is as follows:
On operating voltage sensor and art screen leakage current sensor on the three-phase sleeve pipe that comprises the high, medium and low voltage side, synchronous acquisition comprises each work phase voltage art screen leakage current of sleeve pipe mutually from being arranged on, calculate the dielectric loss of each sleeve pipe and the cover pipe insulation index of capacitance, show in real time and alarm output.
OLTC monitors LD, and it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SLTC logic node is used for the monitoring abnormal state that OLTC gear and OLTC comprise power fail, tripping.
Comprise the OLTC monitoring LD of OLTC monitoring modular, its monitor procedure is as follows:
Comprise the power fail of OLTC gear and OLTC, the abnormality of tripping from the collection of OLTC on-load voltage regulating switch supervising device, show in real time and alarm output.
Oil dissolved gas monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) a SIML insulating medium monitoring logic node, be used for the monitoring of transformer oil gas.
Comprise the oil dissolved gas monitoring LD of oil dissolved gas monitoring modular, its monitor procedure is as follows:
Comprise H from integrated oil dissolved gas monitoring equipment or the collection of oil dissolved gas monitoring sensor 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2Totally eight kinds of gas contents of O, export corresponding current signal, when 4mA~20mA output current is arranged, directly be sent to the analog quantity channel of transformer synthesis supervising device by cable, the CPU that directly is sent to the transformer synthesis supervising device after the FPGA acquisition module is processed calculates H 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2The concentration of O; When without 4mA~20mA output current, be sent to by network on the CPU of transformer synthesis supervising device and process, Real-Time Monitoring H 2, CO, CH 4, C 2H 4, C 2H 2, C 2H 6, CO 2, water vapor H 2O, and by characteristic gas method and three-ratio method, oil dissolved gas is analyzed, tentatively judge the operation conditions of transformer, show in real time and alarm output.
Partial discharge monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node is for the physical message of describing this LD;
2) LPN0 logic node is used for providing other logical point example needed publicly-owned information;
3) SPDC logic node is used for the monitoring of partial discharge of transformer intensity, shelf depreciation phase place, shelf depreciation number of times information.
Comprise the partial discharge monitoring LD of partial discharge monitoring module, its monitor procedure is as follows:
The information that comprises partial discharge intensity, shelf depreciation phase place and local discharge time from the collection of integrated partial discharge monitoring equipment or partial discharge monitoring sensor, export corresponding current signal, when 4mA~20mA output current is arranged, directly be sent to the analog quantity channel of transformer synthesis supervising device by cable, the CPU that directly is sent to the transformer synthesis supervising device after the FPGA acquisition process calculates value of consult volume and the alarm output that comprises partial discharge intensity, shelf depreciation phase place and local discharge time; When without 4mA~20mA output current, be sent to by network on the CPU of transformer synthesis supervising device and process, show in real time the value of consult volume and the alarm output that comprise partial discharge intensity, shelf depreciation phase place and local discharge time.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; make without departing from the concept of the premise utility some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of submitting to.

Claims (10)

1. power system transformer comprehensive monitoring system, be arranged on the power transformer side, comprise CPU hardware platform based on the unified employing modular design of IEC 61850, be connected the respective sensor that various image data are provided with power transformer, and adopt communication protocol to set up with remote server software the system terminal that data are connected, described system terminal be dispatching terminal with the substation PC of communicating by letter in a kind of, remote server software is installed, it is characterized in that:
be provided with cooling control LD, the hot spot temperature of winding that comprises the hot spot temperature of winding measurement module is measured LD, the electric parameters that comprises the electric parameters logging modle records LD, the non electrical quantity monitoring for protection LD that comprises non electrical quantity monitoring for protection module, the iron core grounding current monitoring LD that comprises the iron core grounding current monitoring modular, the sleeve pipe insulating monitoring LD that comprises sleeve pipe insulating monitoring module, the OLTC monitoring LD that comprises on-load voltage regulating switch OLTC monitoring modular, the partial discharge monitoring LD that comprises the oil dissolved gas monitoring LD of oil dissolved gas monitoring modular and comprise the partial discharge monitoring module totally nine kinds of LD by the user wherein at least a kind according to the characteristics option and installment of on-the-spot needs and transformer, adopting separately, corresponding sensor connects described CPU.
2. power system transformer comprehensive monitoring system as claimed in claim 1 is characterized in that:
Also be provided with same time source to the time parts, local real time data display unit, and networking parts;
Described same time source to the time parts comprise the RTC real time clock circuit that adopts the DS3232SN chip;
Described local real time data display unit comprises liquid crystal display LCD, pilot lamp, numeral and Menu key, directionkeys and acknowledgement key and function key, described pilot lamp comprises power light, run indicator, abnormal pilot lamp and alarm indicator, described numeral and Menu key comprise 1 Menu key and 10 numerical keys, and described directionkeys and acknowledgement key comprise upper and lower, left and right four direction key and 1 acknowledgement key; Described function key comprises reset key, grouping key and return key;
Described networking parts comprise that adopting communication protocol is the network interface of IEC 61850.
3. power system transformer comprehensive monitoring system as claimed in claim 1 or 2 is characterized in that:
Described cooling control LD, its composition comprises the following compliance logic node according to IEC 61850-7-4 standard definition:
1) LLN0 logic node;
2) LPHD physical equipment logic node;
3) cooling group of steering logic node of at least one CCGR.
4. power system transformer comprehensive monitoring system as claimed in claim 3 is characterized in that:
Described hot spot temperature of winding is measured LD, and it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) a SPTR logic node or at least one STMP logic node.
5. power system transformer comprehensive monitoring system as claimed in claim 4 is characterized in that:
Described electric parameters records LD, and it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) YPTR logic node;
Described non electrical quantity monitoring for protection LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) at least one RBDR logic node.
6. power system transformer comprehensive monitoring system as claimed in claim 5 is characterized in that:
Described iron core grounding current monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) MMXN logic node;
Described sleeve pipe insulating monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) at least one ZBSH logic node;
Described OLTC monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) SLTC logic node.
7. power system transformer comprehensive monitoring system as claimed in claim 6 is characterized in that:
Described oil dissolved gas monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) SIML insulating medium monitoring logic node;
Described partial discharge monitoring LD, it forms the following compliance logic node that also comprises according to IEC 61850-7-4 standard definition:
1) LPHD physical equipment logic node;
2) LPN0 logic node;
3) SPDC logic node.
8. power system transformer comprehensive monitoring system as claimed in claim 7 is characterized in that:
Carry out integrated to data and process by described CPU, that all LD collection signal unifications are undertaken by a monitor board, described monitor board comprises described CPU, FPGA acquisition module, and the corresponding relatively independent peripheral circuit of realizing each LD function and the interface of each LD;
Described peripheral circuit and interface comprise the multiplex circuit of collection, analysis, control and the unified synchronous clock of analog input, switching value tablet, digital output module, direct current signal division board, monitor board.
9. power system transformer comprehensive monitoring system as claimed in claim 8 is characterized in that:
Described analog input comprises that differential signal load module, sampling keep module, multichannel to select module, AD modular converter and bus interface;
Described switching value tablet comprises switching input module, CPLD control module, two-stage buffer module and bus interface;
Described digital output module comprises bus interface, CPLD control module and fault-tolerant retaking of a year or grade module.
10. power system transformer comprehensive monitoring system as claimed in claim 9 is characterized in that:
The multiplex circuit of the collection of described monitor board, analysis, control and unified synchronous clock comprises bus design circuit, memory card interface circuit, usb circuit, serial interface circuit, RTC real time clock circuit and network interface design circuit.
CN 201220669269 2012-12-07 2012-12-07 Comprehensive monitoring system of transformer of electric power system Expired - Fee Related CN202948087U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220669269 CN202948087U (en) 2012-12-07 2012-12-07 Comprehensive monitoring system of transformer of electric power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220669269 CN202948087U (en) 2012-12-07 2012-12-07 Comprehensive monitoring system of transformer of electric power system

Publications (1)

Publication Number Publication Date
CN202948087U true CN202948087U (en) 2013-05-22

Family

ID=48423783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220669269 Expired - Fee Related CN202948087U (en) 2012-12-07 2012-12-07 Comprehensive monitoring system of transformer of electric power system

Country Status (1)

Country Link
CN (1) CN202948087U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103399230A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Power transformer winding online monitoring system
CN103888331A (en) * 2014-02-24 2014-06-25 北京科东电力控制系统有限责任公司 General high speed bus device for distribution terminal and data interaction method
CN104950949A (en) * 2015-06-12 2015-09-30 国家电网公司 Temperature monitoring device and temperature monitoring method for cable interlayer
CN105022434A (en) * 2015-06-12 2015-11-04 国家电网公司 A device and method for monitoring the temperature and the humidity of a cable interlayer
CN106443083A (en) * 2016-09-05 2017-02-22 国网天津市电力公司 Multi-directional-adjustment special operation platform for partial discharge test of ultrahigh-voltage transformer
CN106526378A (en) * 2016-11-08 2017-03-22 石家庄科林电气股份有限公司 Self-test auxiliary device and self-test method for visual hardware of distribution terminal
CN107168141A (en) * 2017-07-07 2017-09-15 西安鼎研科技股份有限公司 A kind of multichannel, the gas analysis instrument of multicomponent synchro measure and method
CN108680838A (en) * 2018-05-21 2018-10-19 国网天津市电力公司电力科学研究院 A kind of transformer insulated deterioration mode discrimination method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103399230A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Power transformer winding online monitoring system
CN103888331A (en) * 2014-02-24 2014-06-25 北京科东电力控制系统有限责任公司 General high speed bus device for distribution terminal and data interaction method
CN104950949A (en) * 2015-06-12 2015-09-30 国家电网公司 Temperature monitoring device and temperature monitoring method for cable interlayer
CN105022434A (en) * 2015-06-12 2015-11-04 国家电网公司 A device and method for monitoring the temperature and the humidity of a cable interlayer
CN106443083A (en) * 2016-09-05 2017-02-22 国网天津市电力公司 Multi-directional-adjustment special operation platform for partial discharge test of ultrahigh-voltage transformer
CN106443083B (en) * 2016-09-05 2019-02-01 国网天津市电力公司 It is a kind of can multidirectional adjusting extra-high voltage transformer local discharge test dedicated operations platform
CN106526378A (en) * 2016-11-08 2017-03-22 石家庄科林电气股份有限公司 Self-test auxiliary device and self-test method for visual hardware of distribution terminal
CN106526378B (en) * 2016-11-08 2019-03-29 石家庄科林电气股份有限公司 A kind of distribution terminal visualization hardware check surveys auxiliary device and self-sensing method
CN107168141A (en) * 2017-07-07 2017-09-15 西安鼎研科技股份有限公司 A kind of multichannel, the gas analysis instrument of multicomponent synchro measure and method
CN107168141B (en) * 2017-07-07 2019-07-12 西安鼎研科技股份有限公司 The gas analysis instrument and method of a kind of multichannel, multicomponent synchro measure
CN108680838A (en) * 2018-05-21 2018-10-19 国网天津市电力公司电力科学研究院 A kind of transformer insulated deterioration mode discrimination method

Similar Documents

Publication Publication Date Title
CN102981084B (en) Comprehensive monitoring system for electric power system transformers
CN202948087U (en) Comprehensive monitoring system of transformer of electric power system
CN106570784B (en) Voltage monitoring integrated model
CN102290865A (en) Integrated intelligent unit of intelligent substation
CN102937685A (en) Real-time simulation technique-based integrated testing platform for substation
CN105759200B (en) A kind of load ratio bridging switch working condition on-line monitoring and method for early warning
CN204758748U (en) Cubical switchboard intelligent integrated monitoring devices
CN108233531A (en) A kind of packaged type low-voltage electric energy mass monitoring system and method
CN104967220A (en) Transformer substation monitoring system
CN103633735A (en) Transformer station primary state monitoring system based on IEC61850 protocol
CN103398740A (en) Real-time on-line monitoring device for monitoring abnormal operation of switch cabinet
CN201051018Y (en) Switch case contact temperature monitoring and alarming system
WO2021217695A1 (en) Smart data collection and sorting system for smart factory framework-based power supply and distribution grid
CN105137954A (en) Real-time on-line temperature and humidity monitoring system of transformer substation
CN101964548A (en) Comprehensive intelligent assembly of power transformer
CN203164360U (en) Transformer device insulation online monitoring system
CN202034825U (en) Intelligent comprehensive device of medium-voltage switch
CN101409460A (en) Visual locale bus power distribution system apparatus for dangerous situation
CN203840058U (en) Substation secondary equipment monitoring system
CN202837447U (en) Distribution and transformation tap position detector and distribution and transformation tap position detecting system
CN202974901U (en) Online multi-component gas monitoring device
CN102944743A (en) Detection instrument, detection system and detection method for distribution and transformation tapping point gear
CN206041636U (en) Synthesize distribution remote intelligent monitoring system
CN205104993U (en) Building electrical safety monitoring system
CN203490061U (en) Online monitoring device for mechanical properties

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130522

Termination date: 20171207

CF01 Termination of patent right due to non-payment of annual fee