CN104009540B - The comprehensive power monitoring system of a kind of metro traction electric substation and monitoring method - Google Patents
The comprehensive power monitoring system of a kind of metro traction electric substation and monitoring method Download PDFInfo
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- CN104009540B CN104009540B CN201410183490.3A CN201410183490A CN104009540B CN 104009540 B CN104009540 B CN 104009540B CN 201410183490 A CN201410183490 A CN 201410183490A CN 104009540 B CN104009540 B CN 104009540B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
nullThe comprehensive power monitoring system of a kind of metro traction electric substation and monitoring method，It is connected with signal conditioning circuit including D.C mutual-inductor group，Signal conditioning circuit is connected with A/D converter，A/D converter is connected with 32 bit DSP digital signal processors by EBI，32 bit DSP digital signal processors are also with house dog and reset circuit、Peripheral interface circuit、Dual port RAM、System power supply and system clock are connected，Dual port RAM is also connected with 32 central processing units，Additionally erasable Programmadle logic device EPLD is with 32 bit DSP digital signal processors、32 central processing units and dual port RAM are connected，Such structure can coordinate with remote system in conjunction with its method，Achieve electric quantity acquisition and the control of the alternating current-direct current feeder line of metro traction electric substation、Detection fault、Fault zone positions、Isolation and non-faulting region restore electricity such function，Reach to improve the purpose of power supply reliability.
Description
Technical field
The invention belongs to metro traction electric substation monitoring technical field, be specifically related to comprehensive power monitoring system and the monitoring method of a kind of metro traction electric substation.
Background technology
Power-supply system provides operation and protection power supply mainly to electrical secondary system of electric substation, and its reliability is the basic guarantee of safe running of transformer substation.Along with making constant progress of intelligent power grid technology, electric substation's alterating and direct current origin system is had higher requirement by country, and electric substation's double loop power supply is wanted to realize automatic intelligent switching and carry out remote monitoring and administration to each for distribution loop.Under the unmanned extensive use background on duty of electric substation, realize dispatching terminal to the remote measurement of transformation station power supply, remote control, remote signalling and distant control function, can the abnormal condition of discovering device processing in time as early as possible, thus effectively ensureing electric substation's safe and reliable operation.
The metro traction electric substation that early stage puts into operation is by the restriction of technical development at that time, fail during design to consider monitoring and Based Intelligent Control in real time to electric substation's alterating and direct current origin system, do not possess the function to the switching of electric substation power of alterating and direct current double loop power supply energy automatic intelligent, do not possess and all wire inlet loops, the electric parameter of equipped circuit and switch are carried out monitor in real time and realize the function to each confession distribution loop remote monitoring and administration.Metro traction electric substation adopts the special method of operation of two-side feeding, there are penetration and 24 pulse wave rectifiers produces bigger electromagnetic interference, the DC1500V chopper special circumstances such as one order of magnitude of quick action compared with AC circuit breaker, supervising device service condition is severe, and metro traction electric substation all adopts unattended operation pattern, when dispatching terminal can not in real time monitoring and the Based Intelligent Control of electric substation's alterating and direct current origin system, equipment is in the running status under uncontrollable condition, runs to metro safety and brings great hidden danger.General relevant development project focuses primarily in the research and development of newly-built complete comprehensive power equipment at present, existing electric substation alterating and direct current origin system especially metro traction transformation station power supply system is paid close attention to less, therefore, metro power substation comprehensive power monitoring systematic study it is specifically designed for extremely necessary.
And existing domestic and international same category of device can realize intelligent power supply function, both also can some AC-DC parameters of on-line monitoring, and carry out real-time monitoring alarming according to pre-designed alarm range, but its shortcoming and deficiency are also apparent from: supervisory circuit and control are all complex；Versatility is not strong, and the comprehensive monitoring system of transformer station generally developed with it supports the use；Capacity of resisting disturbance is poor.
Summary of the invention
nullIt is an object of the invention to provide the comprehensive power of a kind of metro traction electric substation monitoring system and monitoring method，AC voltage transformer including D.C mutual-inductor group is connected with signal conditioning circuit respectively with AC current transformer，Signal conditioning circuit is connected with A/D converter，A/D converter is connected with 32 bit DSP digital signal processors by EBI，32 bit DSP digital signal processors are also with house dog and reset circuit、Peripheral interface circuit、Dual port RAM、System power supply and system clock are connected，Dual port RAM is also connected with 32 central processing units，Additionally erasable Programmadle logic device EPLD is with 32 bit DSP digital signal processors、32 central processing units and dual port RAM are connected，Such structure can coordinate with remote automation main website and substation system in conjunction with its method，Achieve electric quantity acquisition and the control of the alternating current-direct current feeder line of metro traction electric substation、Detection fault、Fault zone positions、Isolation and non-faulting region restore electricity such function，Reach to improve the purpose of power supply reliability.
In order to overcome deficiency of the prior art, the invention provides the comprehensive power of a kind of metro traction electric substation monitoring system and the solution of monitoring method, specific as follows:
nullA kind of comprehensive power monitoring system of metro traction electric substation，The AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation is accessed including parallel connection respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the AC current transformer of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，Parallel connection accesses the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and just constitutes D.C mutual-inductor group 1，The AC voltage transformer of D.C mutual-inductor group 1 is connected with signal conditioning circuit 2 respectively with AC current transformer，Signal conditioning circuit 2 also feeds out circuit switching with the low-side switch of the comprehensive power of metro traction electric substation with each low pressure of the comprehensive power of metro traction electric substation and is connected，Signal conditioning circuit 2 is connected with A/D converter 3，A/D converter 3 is connected with 32 bit DSP digital signal processors 5 by EBI 4，32 bit DSP digital signal processors 5 are also with house dog and reset circuit 7、Peripheral interface circuit 8、Dual port RAM 6、System power supply 9 and system clock 10 are connected，Dual port RAM 6 is also connected with 32 central processing units 11，Additionally erasable Programmadle logic device EPLD12 is with 32 bit DSP digital signal processors 5、32 central processing units 11 and dual port RAM 6 are connected，The bus used in the comprehensive power monitoring system of described metro traction electric substation is isolation bus，Mode that described dual port RAM 6 is connected with 32 central processing units 11 and the mode that 32 bit DSP digital signal processors 5 are connected with dual port RAM 6 are dma mode，32 described central processing units 11 are also connected with Flash_Memory，Dual port RAM 6 and Flash_Memory can preserve and can reach 1000 up to 50 record ripple reports and logout number；Described A/D converter 3 is 16 A/D converters；Described peripheral interface circuit 8 includes 2 independent Fast Ethernet network communication interfaces, and the terminal connected with Fast Ethernet network communication interface all can arrange independent IP address, and can support communication and communications protocol.
32 described central processing units 11 adopt Nucleus embedded real-time operating system, monitor the functional module of system on described Nucleus embedded real-time operating system with the comprehensive power of metro traction electric substation, the functional module of the comprehensive power monitoring system of metro traction electric substation includes measurement module, on off state and sequence of events recording module, failure wave-recording module, real-time change data reporting module, the out-of-limit detection of remote measurement and discrimination module, electric voltage exception curve record and flow-through curve logging modle and abnormal condition alarm module.
Described system power supply is with Isolated Shield cover.
The monitoring method of the comprehensive power monitoring system of described metro traction electric substation, specific as follows:
null(1) when needing the comprehensive power to metro traction electric substation to measure，First pass through parallel connection respectively and access the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and each carries out the line voltage distribution of its connection or electric current inductively measuring magnitude of voltage or current value，The magnitude of voltage that inductively measures will be carried out or current value is sent into signal conditioning circuit 2 and carried out signal condition，Then the magnitude of voltage after signal condition or current value are sent into A/D converter 3 and carry out A/D conversion，Magnitude of voltage or current value after A/D conversion are sent in 32 bit DSP digital signal processors 5 and are carried out Digital Signal Processing，Magnitude of voltage or current value after Digital Signal Processing send into 32 central processing units 11，32 central processing units 11 just start the magnitude of voltage after measurement module reception Digital Signal Processing or current value，Thus obtain the alternating voltage of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the alternating current of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，The alternating voltage of three-phase line of I road low-pressure side further according to the comprehensive power of the metro traction electric substation obtained、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and calculates low-pressure side line voltage、Negative sequence voltage、Active power、Reactive power or power factor；
null(2) when needing the comprehensive power of metro traction electric substation is carried out on off state and sequence of events recording，First pass through each low pressure of the status signal of the low-side switch of the comprehensive power of metro traction electric substation or the comprehensive power of alarm signal and metro traction electric substation and feed out the status signal of circuit switching or alarm signal is sent into signal conditioning circuit 2 and carried out signal condition，Then the status signal after signal condition or alarm signal are sent into A/D converter 3 and carry out A/D conversion，Status signal or alarm signal after A/D conversion are sent in 32 bit DSP digital signal processors 5 and are carried out Digital Signal Processing，Status signal or alarm signal after Digital Signal Processing send into 32 central processing units 11，32 central processing units 11 Digital Signal Processing is received with regard to starting switch state and sequence of events recording module after status signal or alarm signal being saved in dual port RAM 6 or Flash_Memory；
(3) when needing the comprehensive power of metro traction electric substation is carried out failure wave-recording, first 32 central processing unit 11 startup separator are recorded mode block and are arranged to the memory space of failure wave-recording in dual port RAM 6 or Flash_Memory, the size of the described memory space for failure wave-recording meets the condition be more than or equal to 1M, then failure wave-recording module just can carry out failure wave-recording when 5 ripples after giving tacit consent to front 5 ripples in trouble point and trouble point, or can also arrange according to user's request and carry out failure wave-recording, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously；According to on-the-spot situation, additionally failure wave-recording module can also increase that stream starts record ripple, overvoltage starts record ripple, the switch changed position abnormal record such function of ripple is thrown and moved back, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously, failure wave-recording can also notify dispatching terminal after terminating, and dispatching terminal can manually take fault wave；
(4) carry out the comprehensive power of metro traction electric substation real-time change data are given the correct time when needing, 32 central processing units 11 start real-time change data reporting module and curent change step-length or change in voltage step-length are configured, then the dynamic current of the comprehensive power of metro traction electric substation or the amplitude of variation trend of dynamic electric voltage is measured when the curent change step-length arranged or change in voltage step-length, the amplitude of variation trend of dynamic current or dynamic electric voltage contains the time of the concrete numerical value before and after change and change, the data of the dynamic current of the concrete numerical value contained before and after change and the time of change or the amplitude of variation trend record of dynamic electric voltage are saved in dual port RAM 6 or Flash_Memory, it is automatically uploaded to control centre in real time simultaneously；
null(5) when needing the comprehensive power of metro traction electric substation is taken remote measurement out-of-limit detection and differentiating，First 32 central processing units 11 start the out-of-limit detection of remote measurement and discrimination module sets the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Further according to the out-of-limit detection of remote measurement、The out-of-limit detection of electric current、The out-of-limit detection of residual voltage and the out-of-limit discrimination function of remote measurement，The out-of-limit detection of remote measurement and discrimination module are according to the size of the current value after Digital Signal Processing and set the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Circuit residual voltage and electric current can be differentiated、Quickly calculate residual voltage and size of current，And compare with the limit value that each circuit of comprehensive power setting metro traction electric substation is corresponding，More limit information will produce SOE record with remote signalling form，Active reporting is to the main website of metro traction electric substation or substation；
(6) when needing the comprehensive power of metro traction electric substation is carried out electric voltage exception curve record and flow-through curve record, first 32 central processing units 11 start electric voltage exception curve record and flow-through curve logging modle setting low-pressure side abnormal voltage and cross stream definite value, then galvanic electricity pressure abnormal curve record and flow-through curve logging modle according to the low-pressure side abnormal voltage set and cross stream definite value, when producing overvoltage/undervoltage or crossing stream warning, the accidental curve that all data of sampling are formed is reported to far-end by galvanic electricity pressure abnormal curve record and flow-through curve logging modle Realtime Alerts active, if abnormal conditions still exist, thereafter bigger peak value will only be transmitted, and timing interval time can upload warning；
(7) when needing the comprehensive power of metro traction electric substation is carried out abnormal condition warning, 32 central processing units 11 start abnormal condition alarm module, abnormal condition alarm module can carry out phase shortage warning, phase angle abnormal alarm, phase sequence abnormal alarm, the abnormal disjunction warning of switch or PT break alarm, and the definite value of the warning of correspondence is adjustable.
The comprehensive power monitoring system of the metro traction electric substation of the present invention and monitoring method thereof can be applicable in metro traction electric substation alterating and direct current origin system, can be also widely applied in electric power transformation and distribution system, alterating and direct current origin system, provide hardware supported for electric substation's unattended operation management mode, contribute to substation facilities and safely and steadily run.
Accompanying drawing explanation
Fig. 1 is the operation principle structural representation of the comprehensive power monitoring system of the metro traction electric substation of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, summary of the invention is described further:
nullWith reference to shown in Fig. 1，The comprehensive power monitoring system of metro traction electric substation，The AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation is accessed including parallel connection respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the AC current transformer of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，Parallel connection accesses the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and just constitutes D.C mutual-inductor group 1，Parallel connection accesses the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、AC current transformer each line voltage distribution or electric current to its connection of the uniline respectively feeding out loop of the comprehensive power that series connection accesses the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and series connection accesses metro traction electric substation inductively measures，The AC voltage transformer of D.C mutual-inductor group 1 is connected with signal conditioning circuit 2 respectively with AC current transformer，Signal conditioning circuit 2 also feeds out circuit switching with the low-side switch of the comprehensive power of metro traction electric substation with each low pressure of the comprehensive power of metro traction electric substation and is connected，Signal conditioning circuit 2 is connected with A/D converter 3，A/D converter 3 is connected with 32 bit DSP digital signal processors 5 by EBI 4，32 bit DSP digital signal processors 5 are also with house dog and reset circuit 7、Peripheral interface circuit 8、Dual port RAM 6、System power supply 9 and system clock 10 are connected，Dual port RAM 6 is also connected with 32 central processing units 11，Additionally erasable Programmadle logic device EPLD12 is with 32 bit DSP digital signal processors 5、32 central processing units 11 and dual port RAM 6 are connected，32 bit DSP digital signal processors 5 and 32 central processing units 11 constitute dual microprocessors，Fast operation，Such structure has degree of accuracy height、Capacity of resisting disturbance is strong、Contour size of the unit(s) is little、Cost is low、The advantage of fast operation and easy care，Additionally the comprehensive power monitoring each parts of system of railway traction electric substation possess standalone feature，Connect in conjunction with bus，Each component function is relatively independent,So when generation part fault, the remaining part of system still can normal operation，It is unlikely to cause system crash，Improve the reliability of system.The bus used in the comprehensive power monitoring system of described metro traction electric substation is isolation bus.Mode that described dual port RAM 6 is connected with 32 central processing units 11 and the mode that 32 bit DSP digital signal processors 5 are connected with dual port RAM 6 are dma mode, enhance stability and the speed of service of system.32 described central processing units 11 are also connected with Flash_Memory, and dual port RAM 6 and Flash_Memory can preserve and can reach 1000 up to 50 record ripple reports and logout number；Described A/D converter 3 is 16 A/D converters, can meet the required precision that analog quantity calculates；Described peripheral interface circuit 8 includes 2 independent Fast Ethernet network communication interfaces, and the terminal connected with Fast Ethernet network communication interface all can arrange independent IP address, and can support communication and communications protocol；So upload data response time real-time good, remote signalling displacement < 1s, remote measurement delta data < 2s.32 described bit DSP digital signal processors 5 include TMS320F2812 and process chip, IS61LV51216SRAM storage chip, 36 road signal adjustment circuits ,+3.3V ,+1.8V ,+5V and +/-12V system power supply, system clock and peripheral expansion interface composition.Dual port RAM chip id T70261L Real-Time Sharing at a high speed gathers 32 central processing units 11 and the data of 32 central processing units 11 of management.The access time can arrive Microsecond grade.TMS320F2812 processes the clock frequency of chip and reaches as high as 150MHz, can complete the multiply-accumulate computing of 32 × 32, it is ensured that the real-time of data within an instruction cycle.The signals collecting that programmability is different structure power station flexibly provides facility, the switching by variable connector of the analog quantity of 36 passages, entering the high-precision A/D of 16bits through signal modulation to change, the addressing range of maximum 4M is long-time mass data storage offer facility under no supervision state simultaneously.
null32 described central processing units 11 adopt Nucleus embedded real-time operating system，Described Nucleus embedded real-time operating system is monitored the functional module of system with the comprehensive power of metro traction electric substation，The functional module of the comprehensive power monitoring system of metro traction electric substation includes measurement module、On off state and sequence of events recording module、Failure wave-recording module、Real-time change data reporting module、The out-of-limit detection of remote measurement and discrimination module、Electric voltage exception curve record and flow-through curve logging modle and abnormal condition alarm module，The functional module of the comprehensive power monitoring system of metro traction electric substation adopts modular designs，Open architecture，Secondary development can be carried out according to different equipment and application，The configuration software interface of feature richness is provided，Make user that configuration software can be utilized to complete the parameter design of complexity、Display of regime and event simulation (as simulated failure occurs)，There is motility more carefully，Reserved function interface，Easily it is connected mutually with third party's functional module (such as stipulations module).
Described system power supply is with Isolated Shield cover, it is to avoid on-the-spot electromagnetic interference.
The monitoring method of the comprehensive power monitoring system of described metro traction electric substation, specific as follows:
null(1) when needing the comprehensive power to metro traction electric substation to measure，First pass through parallel connection respectively and access the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and each carries out the line voltage distribution of its connection or electric current inductively measuring magnitude of voltage or current value，The magnitude of voltage that inductively measures will be carried out or current value is sent into signal conditioning circuit 2 and carried out signal condition，Then the magnitude of voltage after signal condition or current value are sent into A/D converter 3 and carry out A/D conversion，Magnitude of voltage or current value after A/D conversion are sent in 32 bit DSP digital signal processors 5 and are carried out Digital Signal Processing，Magnitude of voltage or current value after Digital Signal Processing send into 32 central processing units 11，32 central processing units 11 just start the magnitude of voltage after measurement module reception Digital Signal Processing or current value，Thus obtain the alternating voltage of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the alternating current of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，The alternating voltage of three-phase line of I road low-pressure side further according to the comprehensive power of the metro traction electric substation obtained、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and calculates low-pressure side line voltage、Negative sequence voltage、Active power、Reactive power or power factor，Such measurement error < 0.5%；
null(2) when needing the comprehensive power of metro traction electric substation is carried out on off state and sequence of events recording，First pass through each low pressure of the status signal of the low-side switch of the comprehensive power of metro traction electric substation or the comprehensive power of alarm signal and metro traction electric substation and feed out the status signal of circuit switching or alarm signal is sent into signal conditioning circuit 2 and carried out signal condition，Then the status signal after signal condition or alarm signal are sent into A/D converter 3 and carry out A/D conversion，Status signal or alarm signal after A/D conversion are sent in 32 bit DSP digital signal processors 5 and are carried out Digital Signal Processing，Status signal or alarm signal after Digital Signal Processing send into 32 central processing units 11，32 central processing units 11 Digital Signal Processing is received with regard to starting switch state and sequence of events recording module after status signal or alarm signal being saved in dual port RAM 6 or Flash_Memory，Precision can reach 2ms；
(3) when needing the comprehensive power of metro traction electric substation is carried out failure wave-recording, first 32 central processing unit 11 startup separator are recorded mode block and are arranged to the memory space of failure wave-recording in dual port RAM 6 or Flash_Memory, the size of the described memory space for failure wave-recording meets the condition be more than or equal to 1M, thus can preserve 128 fault wave, then failure wave-recording module just can carry out failure wave-recording when 5 ripples after giving tacit consent to front 5 ripples in trouble point and trouble point, or can also arrange according to user's request and carry out failure wave-recording, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously；According to on-the-spot situation, additionally failure wave-recording module can also increase that stream starts record ripple, overvoltage starts record ripple, the switch changed position abnormal record such function of ripple is thrown and moved back, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously, failure wave-recording can also notify dispatching terminal after terminating, and dispatching terminal can manually take fault wave；
null(4) carry out the comprehensive power of metro traction electric substation real-time change data are given the correct time when needing，32 central processing units 11 start real-time change data reporting module and curent change step-length or change in voltage step-length are configured，Then the dynamic current of the comprehensive power of metro traction electric substation or the amplitude of variation trend of dynamic electric voltage is measured when the curent change step-length arranged or change in voltage step-length，The amplitude of variation trend of dynamic current or dynamic electric voltage contains the time of the concrete numerical value before and after change and change，The data of the dynamic current of the concrete numerical value contained before and after change and the time of change or the amplitude of variation trend record of dynamic electric voltage are saved in dual port RAM 6 or Flash_Memory，It is automatically uploaded to control centre in real time simultaneously，Dispatcher just can call and check；
null(5) when needing the comprehensive power of metro traction electric substation is taken remote measurement out-of-limit detection and differentiating，First 32 central processing units 11 start the out-of-limit detection of remote measurement and discrimination module sets the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Further according to the out-of-limit detection of remote measurement、The out-of-limit detection of electric current、The out-of-limit detection of residual voltage and the out-of-limit discrimination function of remote measurement，The out-of-limit detection of remote measurement and discrimination module are according to the size of the current value after Digital Signal Processing and set the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Circuit residual voltage and electric current can be differentiated、Quickly calculate residual voltage and size of current，And compare with the limit value that each circuit of comprehensive power setting metro traction electric substation is corresponding，More limit information will produce SOE record with remote signalling form，Active reporting is to the main website of metro traction electric substation or substation；
(6) when needing the comprehensive power of metro traction electric substation is carried out electric voltage exception curve record and flow-through curve record, first 32 central processing units 11 start electric voltage exception curve record and flow-through curve logging modle setting low-pressure side abnormal voltage and cross stream definite value, then galvanic electricity pressure abnormal curve record and flow-through curve logging modle according to the low-pressure side abnormal voltage set and cross stream definite value, when producing overvoltage/undervoltage or crossing stream warning, the accidental curve that all data of sampling are formed is reported to far-end by galvanic electricity pressure abnormal curve record and flow-through curve logging modle Realtime Alerts active, recording curve continues 128 sampled points, acquisition interval is set as every 100MS one point of sampling.If abnormal conditions still exist, only transmitting thereafter bigger peak value, and timing interval time can upload warning, device at least preserves 10 accidental curves, by the precedence arrangement that accident occurs；
(7) when needing the comprehensive power of metro traction electric substation is carried out abnormal condition warning, 32 central processing units 11 start abnormal condition alarm module, abnormal condition alarm module can carry out phase shortage warning, phase angle abnormal alarm, phase sequence abnormal alarm, the abnormal disjunction warning of switch or PT break alarm, and the definite value of the warning of correspondence is adjustable.
The comprehensive power monitoring system of the metro traction electric substation of the present invention and monitoring method thereof can be applicable in metro traction electric substation alterating and direct current origin system, can be also widely applied in electric power transformation and distribution system, alterating and direct current origin system, provide hardware supported for electric substation's unattended operation management mode, contribute to substation facilities and safely and steadily run.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, without departing within the scope of technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is without departing from technical solution of the present invention content, technical spirit according to the present invention, within the spirit and principles in the present invention, the any simple amendment that above example is made, equivalent replacement and improvement etc., all still fall within the protection domain of technical solution of the present invention.
Claims (4)
- null1. the comprehensive power monitoring system of a metro traction electric substation，It is characterized in that including parallel connection respectively accesses the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the AC current transformer of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，Parallel connection accesses the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation respectively、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and just constitutes D.C mutual-inductor group，The AC voltage transformer of D.C mutual-inductor group is connected with signal conditioning circuit respectively with AC current transformer，Signal conditioning circuit also feeds out circuit switching with the low-side switch of the comprehensive power of metro traction electric substation with each low pressure of the comprehensive power of metro traction electric substation and is connected，Signal conditioning circuit is connected with A/D converter，A/D converter is connected with 32 bit DSP digital signal processors by EBI，32 bit DSP digital signal processors are also with house dog and reset circuit、Peripheral interface circuit、Dual port RAM、System power supply and system clock are connected，Dual port RAM is also connected with 32 central processing units，Additionally erasable Programmadle logic device EPLD is with 32 bit DSP digital signal processors、32 central processing units and dual port RAM are connected；The bus used in the comprehensive power monitoring system of described metro traction electric substation is isolation bus；Mode that described dual port RAM is connected with 32 central processing units and the mode that 32 bit DSP digital signal processors are connected with dual port RAM are dma mode；32 described central processing units are also connected with Flash_Memory, and dual port RAM and Flash_Memory can preserve and can reach 1000 up to 50 record ripple reports and logout number；Described A/D converter is 16 A/D converters；Described peripheral interface circuit includes 2 independent Fast Ethernet network communication interfaces, and the terminal connected with Fast Ethernet network communication interface all can arrange independent IP address, and can support communication and communications protocol.
- 2. the comprehensive power monitoring system of metro traction electric substation according to claim 1, it is characterized in that described 32 central processing unit adopts Nucleus embedded real-time operating system, described Nucleus embedded real-time operating system is monitored the functional module of system with the comprehensive power of metro traction electric substation, the functional module of the comprehensive power monitoring system of metro traction electric substation includes measurement module, on off state and sequence of events recording module, failure wave-recording module, real-time change data reporting module, the out-of-limit detection of remote measurement and discrimination module, electric voltage exception curve record and flow-through curve logging modle and abnormal condition alarm module.
- 3. the comprehensive power monitoring system of metro traction electric substation according to claim 2, it is characterised in that described system power supply is with Isolated Shield cover.
- 4. the monitoring method of the comprehensive power monitoring system of metro traction electric substation according to claim 3, it is characterised in that specific as follows:null(1) when needing the comprehensive power to metro traction electric substation to measure，First pass through parallel connection respectively and access the AC voltage transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The AC voltage transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the AC current transformer of the AC current transformer of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation and the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and each carries out the line voltage distribution of its connection or electric current inductively measuring magnitude of voltage or current value，The magnitude of voltage that inductively measures will be carried out or current value is sent into signal conditioning circuit and carried out signal condition，Then the magnitude of voltage after signal condition or current value are sent into A/D converter and carry out A/D conversion，Magnitude of voltage or current value after A/D conversion are sent in 32 bit DSP digital signal processors 5 and are carried out Digital Signal Processing，Magnitude of voltage or current value after Digital Signal Processing send into 32 central processing units，32 central processing units just start the magnitude of voltage after measurement module reception Digital Signal Processing or current value，Thus obtain the alternating voltage of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the alternating current of the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting，The alternating voltage of three-phase line of I road low-pressure side further according to the comprehensive power of the metro traction electric substation obtained、The alternating voltage of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the three-phase line of the I road low-pressure side of the comprehensive power of metro traction electric substation、Series connection accesses the alternating current of the alternating current of the three-phase line of the II road low-pressure side of the comprehensive power of metro traction electric substation or the uniline respectively feeding out loop of the comprehensive power accessing metro traction electric substation of connecting and calculates low-pressure side line voltage、Negative sequence voltage、Active power、Reactive power or power factor；null(2) when needing the comprehensive power of metro traction electric substation is carried out on off state and sequence of events recording，First pass through each low pressure of the status signal of the low-side switch of the comprehensive power of metro traction electric substation or the comprehensive power of alarm signal and metro traction electric substation and feed out the status signal of circuit switching or alarm signal is sent into signal conditioning circuit and carried out signal condition，Then the status signal after signal condition or alarm signal are sent into A/D converter and carry out A/D conversion，Status signal or alarm signal after A/D conversion are sent in 32 bit DSP digital signal processors and are carried out Digital Signal Processing，Status signal or alarm signal after Digital Signal Processing send into 32 central processing units，32 central processing units Digital Signal Processing is received with regard to starting switch state and sequence of events recording module after status signal or alarm signal being saved in dual port RAM 6 or Flash_Memory；(3) when needing the comprehensive power of metro traction electric substation is carried out failure wave-recording, first 32 central processing unit startup separator are recorded mode block and are arranged to the memory space of failure wave-recording in dual port RAM or Flash_Memory, the size of the described memory space for failure wave-recording meets the condition be more than or equal to 1M, then failure wave-recording module carries out failure wave-recording when 5 ripples after giving tacit consent to front 5 ripples in trouble point and trouble point, or arrange always according to user's request and carry out failure wave-recording, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously；According to on-the-spot situation, additionally failure wave-recording module can also increase that stream starts record ripple, overvoltage starts record ripple, the switch changed position abnormal record such function of ripple is thrown and moved back, all data of the both sides power supply in the comprehensive power of record metro traction electric substation simultaneously, failure wave-recording notifies dispatching terminal after terminating, dispatching terminal manually takes fault wave；(4) carry out the comprehensive power of metro traction electric substation real-time change data are given the correct time when needing, 32 central processing units start real-time change data reporting module and curent change step-length or change in voltage step-length are configured, then the dynamic current of the comprehensive power of metro traction electric substation or the amplitude of variation trend of dynamic electric voltage is measured when the curent change step-length arranged or change in voltage step-length, the amplitude of variation trend of dynamic current or dynamic electric voltage contains the time of the concrete numerical value before and after change and change, the data of the dynamic current of the concrete numerical value contained before and after change and the time of change or the amplitude of variation trend record of dynamic electric voltage are saved in dual port RAM or Flash_Memory, it is automatically uploaded to control centre in real time simultaneously；null(5) when needing the comprehensive power of metro traction electric substation is taken remote measurement out-of-limit detection and differentiating，First 32 central processing units start the out-of-limit detections of remote measurement and discrimination module sets the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Further according to the out-of-limit detection of remote measurement、The out-of-limit detection of electric current、The out-of-limit detection of residual voltage and the out-of-limit discrimination function of remote measurement，The out-of-limit detection of remote measurement and discrimination module are according to the size of the current value after Digital Signal Processing and set the limit value that each circuit of comprehensive power of metro traction electric substation is corresponding，Circuit residual voltage and electric current can be differentiated、Quickly calculate residual voltage and size of current，And compare with the limit value that each circuit of comprehensive power setting metro traction electric substation is corresponding，More limit information will produce SOE record with remote signalling form，Active reporting is to the main website of metro traction electric substation or substation；(6) when needing the comprehensive power of metro traction electric substation is carried out electric voltage exception curve record and flow-through curve record, first 32 central processing units start electric voltage exception curve record and flow-through curve logging modle setting low-pressure side abnormal voltage and cross stream definite value, then galvanic electricity pressure abnormal curve record and flow-through curve logging modle according to the low-pressure side abnormal voltage set and cross stream definite value, when producing overvoltage/undervoltage or crossing stream warning, the accidental curve that all data of sampling are formed is reported to far-end by galvanic electricity pressure abnormal curve record and flow-through curve logging modle Realtime Alerts active, if abnormal conditions still exist, thereafter bigger peak value will only be transmitted, and timing interval time can upload warning；(7) when needing the comprehensive power of metro traction electric substation is carried out abnormal condition warning, 32 central processing units start abnormal condition alarm module, abnormal condition alarm module can carry out phase shortage warning, phase angle abnormal alarm, phase sequence abnormal alarm, the abnormal disjunction warning of switch or PT break alarm, and the definite value of the warning of correspondence is adjustable.
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| CN107505930A (en) * | 2017-06-07 | 2017-12-22 | 南京铁道职业技术学院 | The test device and method of subway |
| CN107526348A (en) * | 2017-06-07 | 2017-12-29 | 南京铁道职业技术学院 | The test device and method of the controller of subway system |
| CN109391036B (en) * | 2018-12-10 | 2022-02-08 | 朱炳霞 | Power-off induction monitoring system |
| CN109672269B (en) * | 2018-12-25 | 2022-06-28 | 中国铁道科学研究院集团有限公司 | High-speed railway electric energy quality comprehensive monitoring system and method |
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Effective date of registration: 20200212 Address after: No. 1501, floor 15, unit 1, building 9, No. 76 Cuizhu street, Zhengzhou hi tech Industrial Development Zone, Zhengzhou City, Henan Province 450001 Patentee after: Zhengzhou Tongxiao Data Technology Co., Ltd Address before: 211200, No. 688, Tianshengqiao Avenue, Yong Yang Town, Lishui District, Jiangsu, Nanjing Patentee before: Nanjing Institute of Railway Technology |