CN102064612B - System and method for maintaining condition of relay protection - Google Patents

System and method for maintaining condition of relay protection Download PDF

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Publication number
CN102064612B
CN102064612B CN 201110006900 CN201110006900A CN102064612B CN 102064612 B CN102064612 B CN 102064612B CN 201110006900 CN201110006900 CN 201110006900 CN 201110006900 A CN201110006900 A CN 201110006900A CN 102064612 B CN102064612 B CN 102064612B
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China
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real
time
measure
voltage
control
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CN 201110006900
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Chinese (zh)
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CN102064612A (en
Inventor
包伟
刘跃新
牛元立
杨红旗
李晓朋
熊浩清
苗新军
张春峰
顾峰
Original Assignee
许继电气股份有限公司
河南省电力公司
许昌许继软件技术有限公司
许继集团有限公司
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Priority to CN 201110006900 priority Critical patent/CN102064612B/en
Publication of CN102064612A publication Critical patent/CN102064612A/en
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Publication of CN102064612B publication Critical patent/CN102064612B/en

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Abstract

The invention relates to a system and method for maintaining the condition of relay protection, belonging to the technical field of condition maintenance of relay protection of power systems. The system comprises a relay protection, measurement and control device, a real time data recording system, a relay protection monitoring server and a remote condition monitoring center, wherein the relay protection, measurement and control device is connected into a station level network via a cable; the relay protection monitoring server receives data sent by the relay protection, measurement and control device via the station level network; the real time data recording system is connected with the relay protection monitoring server via a cable; and the relay protection monitoring server is in communication connection with the remote condition monitoring center via a network. The system and the method have the beneficial effects of effectively reducing the items which are periodically maintained manually, even dispensing with manual inspection, reducing the power outage time due to maintenance of equipment and improving the reliability and the working efficiency.

Description

Relaying protection Condition-based maintenance system and repair method
Technical field
The present invention relates to relaying protection Condition-based maintenance system and repair method, belong to relay protection of power system Condition-Based Maintenance Technology field.
Background technology
Along with the fast development of national economy and electrical network scale, electric power netting safe running requires more and more higher to the safety and stability of substation secondary protection/control system.According to the requirement of " relaying protection and power grid security automatics check regulations ", relaying protection, automatic safety device and secondary circuit wiring need periodic inspection, to guarantee that device element is intact, function is normal, guarantee that circuit connection and definite value are correct.If protective device breaks down between twice verification, only have etc. the protective device disabler or etc. verification next time could find.If during this, electric power system is broken down, protection can not correct operation, and this deficiency more and more restricts the raising of secondary device stability, reliability.
In addition, the quantity of transformer station and transmission line is more and more, and protection/the number of control devices sharply increases, and its check workload is large, single check length consuming time, and equipment power failure long operational time has reduced utilization rate of equipment and installations, and the labour has been proposed severe requirement.The remote mountain area of part transformer station, The distance is far and the mountain is high, traditional decide under procuratorial organ's formula inspection cost and can be in any more.
For addressing these problems, carried out in recent years the correlative study of relaying protection status monitoring.The relaying protection repair based on condition of component is exactly to utilize the self check information of the automatic safety devices such as Microcomputer Protection, observing and controlling and the data that itself gather; set up the supervisory control system that a whole set of determines the relay protection device actual state; come the operation conditions of monitoring and protecting equipment, and determine with the action behavior of diagnosis protection, measure and control device whether equipment needs maintenance.The repair based on condition of component of carrying out protective device is the inevitable requirement of electrical network, economic development, and the maintenance that can effectively reduce equipment has a power failure, and improves power supply reliability, and maintenance can improve the availability factor of protective device targetedly.
Summary of the invention
The purpose of this invention is to provide a kind of relaying protection Condition-based maintenance system and repair method, surely examine project to solve the minimizing relaying protection, make the maintainer decide to free inspection work from a large amount of protections, reduce simultaneously the maintenance interruption duration, improve utilization rate of equipment and installations and operational reliability; Reduce the cost of overhaul, especially the cost of overhaul of the relaying protection system of remote districts.
For achieving the above object, relaying protection Condition-based maintenance system of the present invention comprises;
Relaying protection, measure and control device are used for sampling protection three-phase current, measure with three-phase current, busbar voltage, and by giving on the station level network in the guarantor's monitor server that continues;
The real-time data record system is used for recording current value, the magnitude of voltage of electrical secondary system, the real time information of on-off state, and on send the guarantor's monitor server that continues;
The guarantor's monitor server that continues, electric current, voltage sample value and the on-off state information be used for receiving, storage relaying protection, measure and control device and real-time data record system uploading;
The remote condition monitoring center is used for accessing the guarantor's monitor server that continues, and obtains the data that real-time data record system and protective relaying device are uploaded, and data are compared, analyze, process;
Described relaying protection, measure and control device are connected into the station level network by cable; continue and protect the data of monitor server by sending on station level network reception relaying protection, measure and control device; described real-time data record system protects monitor server and is connected with continuing by cable, and the described guarantor's monitor server that continues is connected with remote condition monitoring center communication by network.
Further, described real-time data record system is real-time wave-recoding device, is used for real-time recorder data is uploaded to the Preset Time gap periods guarantor's monitor server that continues.
Further, described real-time wave-recoding device comprises analogue collection module, switching value acquisition module and microprocessor, the output of analogue collection module and switching value acquisition module is connected into respectively the input port of microprocessor, be used for the interior current/voltage value of standing, switching value information are carried out Real-time Collection, form recorded wave file.
Relaying protection repair based on condition of component method of the present invention comprises the following steps:
(1) relaying protection, measure and control device to the current sample passage of need monitoring sample be protected electric current, measure electric current, or the spaced protective device of institute on a bus is gathered voltage value, or gather the on-off state information of the relaying protection of switching value input circuit, measure and control device;
(2) record in real time wave system system record ripple in real time, will deliver to the status monitoring server on real-time recorder data with Fixed Time Interval;
(3) remote condition monitoring center Access status monitor server, the information that will gather is carried out the comparative analysis of system:
(i) protective current and measurement electric current are compared, if in-phase current is protected and measured collection value error greater than current limit, i.e. alarm maintenance;
(ii) contrast relaying protection, measure and control device and record in real time the voltage sample value of all interval protective devices on the bus that wave system system uploads, a certain escapement phase voltage sampled value and other device voltage sample value error greater than the voltage limit value if sentence, i.e. this device voltage acquisition channel abnormal of alarm;
(iii) contrast relaying protection, measure and control device and record in real time the on-off state information of sending on wave system system, if samely open that to exist inconsistent into state be alarm, the prompting maintenance.
Further; (i) of described step (3) if in the current value that gathers of protective device itself send function on not possessing; just compare monitoring secondary current acquisition system with the measurement electric current that extracts protective current and measure and control device collection in the real time data that the record wave system send on uniting in real time.
Relaying protection examination and repair system of the present invention and repair method, on the basis of electric substation automation system, increase status monitoring server and the necessary network equipment, build the substation secondary device condition monitoring system, transform simultaneously Substation SER System, real-time recorder data is reached the guarantor's monitor server that continues, the sampled value of full station electrical secondary system, switching value, relay protection information gather at the status monitoring center, then the comparative analysis information of entirely standing, the judgement electrical secondary system is abnormal, thereby realizes full station secondary device running status is effectively monitored; Incorporate secondary device remote maintenance technology in condition monitoring system; at the status monitoring center, protective device is issued and leave the long-range check command in loop; protective device is made response to check command; carry out breaker tripping and closing operation; monitor and analyze circuit breaker position to change in this process, whether the loop is left in judgement normal.The present invention can effectively reduce and manually surely examines project, even exempts desk checking, can reduce the maintenance interruption duration of equipment, improves reliability and operating efficiency.
Description of drawings
Fig. 1 is the relaying protection Condition-based maintenance system schematic diagram of the embodiment of the present invention;
Fig. 2 is the functional block diagram of real-time wave-recoding device.
Embodiment
Microcomputer type relay protection self has stronger self-test capability; the On-line self-diagnosis of CPU and RAM, FLASH, communication loop can realize, the maintenance of analog acquisition loop, switching value input circuit, switching value output and trip(ping) circuit is the emphasis of deciding inspection work of secondary device.The repair based on condition of component of emphasis solution analog acquisition of the present invention loop, switching value input circuit, switching value output and trip(ping) circuit.
As shown in Figure 1, be the relaying protection Condition-based maintenance system schematic diagram of the embodiment of the present invention.Native system comprises:
Relaying protection, measure and control device are used for sampling protection three-phase current, measure with three-phase current, busbar voltage, and by giving on the station level network in the guarantor's monitor server that continues;
Real-time record wave system system is used for recording current value, the magnitude of voltage of electrical secondary system, the real time information of on-off state, and on send the guarantor's monitor server that continues;
The guarantor's monitor server that continues, electric current, voltage sample value and the on-off state information be used for receiving, storage relaying protection, measure and control device and real-time data record system uploading;
The remote condition monitoring center is used for the access guarantor's monitor server that continues, and obtains the data that relaying protection, measure and control device upload of unifying of record wave system in real time, and data are compared, analyze, process;
Relaying protection, measure and control device are connected into the station level network by cable; continue and protect the data of monitor server by sending on station level network reception protective relaying device; the all cables of crossing of record wave system are connected with the guarantor's monitor server that continues in real time, and the guarantor's monitor server that continues is connected with remote condition monitoring center communication by electric power data network.
Above-mentioned real-time data record system is real-time wave-recoding device, is used for real-time recorder data is uploaded to the Preset Time gap periods guarantor's monitor server that continues; Real-time wave-recoding device comprises analogue collection module, switching value acquisition module and microprocessor as shown in Figure 2, the output of analogue collection module and switching value acquisition module is connected into respectively the input port of microprocessor, be used for the interior current/voltage value of standing, switching value information are carried out Real-time Collection, form recorded wave file.
Continue protect monitor server as the system layout of independent operating in transformer station, with supervisory control system paired running in the station; The guarantor's monitor server that continues is provided with two network interface cards, and an ethernet port docking station control layer switch, an ethernet port connect office automation system switch.The telemonitoring client can be installed respectively by regional power supply office or control centre, protects status monitoring and verification centring system but real time monitoring and control continue; The telemonitoring access can be set to the formula of monopolizing or shared: under exclusive occupying mode, synchronization only allows a local access to continue and protects the status monitoring server; Under shared model, allow a plurality of clients to access simultaneously to continue to protect the status monitoring server.
Relaying protection repair based on condition of component embodiment of the method for the present invention is as follows:
1) monitoring of analog quantity sampling channel
The monitoring of analog quantity sampling channel is one of emphasis of present secondary device monitoring, is also the important content that protective device is examined surely simultaneously.The present invention utilizes the contrast between same source data to realize the mutual verification of different analog acquisition channel statuses, to reach indirect monitoring analog acquisition passage purpose.
For the interval of protection measurement and control integration design, protection/measure and control device CPU itself can obtain and protect with electric current and measurement current information.The monitoring of current sample passage is taked protective current and measured the mode that electric current is compared, if in-phase current is protected and measured Acquisition Error greater than a certain limit value, be i.e. alarm maintenance.The alarm-monitor function realizes or all can in status monitoring center realization at protective device itself.
For the interval of protection and measurement and control non-integral, protective device and measure and control device send sample information on respectively, at the status monitoring center to protective current with measure electric current and be analyzed.If do not send function on the current value that protective device itself gathers does not possess, can compare with the measurement electric current that extracts protective current and measure and control device collection in the real time data of sending on real-time record wave system system monitoring secondary current acquisition system.
After delivering in real time the status monitoring center on the real time data of record wave system system, the sampled value of sending on current sampling data and protection/measure and control device is analyzed.
The detection of voltage channel, by contrast on a bus the voltage value of spaced protective device collection judge.Every table apparatus is sent to the status monitoring center with the voltage acquisition value, in real time the real time data of record wave system system is sent the status monitoring center on also, the many groups of status monitoring center contrast same source data, a certain escapement phase voltage sampled value and other device voltage sample value error greater than a certain limiting value if sentence, i.e. this device voltage acquisition channel abnormal of alarm.
2) switching value output and trip(ping) circuit
For the protective device that did not move within the time between overhauls(TBO); the operations staff does not know whether the outlet loop of this device is good; during real fault smoothly the tripping circuit breaker excise fault; to this; need to send out in advance power off notifying; equipment rear maintainer out of service on the spot protection is left and operation circuit is tested, and round of visits is long, and workload is large.To this kind situation, the solution of this programme is: at the remote condition monitoring center, protective device is sent a transmission order, after protective device is received action command, carries out a trip-reclosure and operate.Whole process only needs the short time to have a power failure, and each switching value typical action time and actual act time when contrasting switch mechanism movement when jumping closing operation by execution, can judge that protection exports to the circuit connection between circuit breaker actuating mechanism.
3) switching value input circuit
Send the status monitoring center on the on-off state of relaying protection, measure and control device; in real time the switching value information at each interval of gathering of record wave system system is sent the status monitoring center on also; then be analyzed at status monitoring center switch amount state; samely open that to exist inconsistent into state be alarm, the prompting maintenance.Simultaneously, in process with the operation circuit remote test is left in protection, record the time that the on-off state action is returned, and then judge whether the protective device on-off state is abnormal.
Take the present invention to realize the protective device of repair based on condition of component, hardware is identical with the protective relaying device that is moving at present, makes certain modification aspect the software that only needs protection send and can realize on information.
The present invention can realize the repair based on condition of component of analog acquisition loop, switching value input circuit, switching value output and trip(ping) circuit.Adopt the present invention to carry out a distant place to protective device and safeguard, decide overhaul period, the Interventions Requested when minimizing is examined surely thereby extend, finally reach the purpose that reduction is surely examined workload, reduction maintenance cost, saved maintenance cost.After introducing the Condition-Based Maintenance Technology of protective device, will change deciding the overhaul period of protective relaying device, simplify the scene of protective device and surely examine program, larger change will occur in the field-checking pattern of protective device, improve field-checking efficient.

Claims (4)

1. a relaying protection Condition-based maintenance system, is characterized in that, comprises;
Relaying protection, measure and control device are used for sampling protection three-phase current, measure with three-phase current, busbar voltage, and by giving on the station level network in the guarantor's monitor server that continues;
The real-time data record system for the real time information of the current value that records electrical secondary system, magnitude of voltage, on-off state, and will deliver to the guarantor's monitor server that continues with Fixed Time Interval on real-time recorder data;
The guarantor's monitor server that continues, electric current, voltage sample value and the on-off state information be used for receiving, storage relaying protection, measure and control device and real-time data record system uploading;
The remote condition monitoring center is used for accessing the guarantor's monitor server that continues, and obtains the data that real-time data record system and protective relaying device are uploaded, and data are compared, analyze, process;
Described relaying protection, measure and control device are connected into the station level network by cable; continue and protect the data of monitor server by sending on station level network reception relaying protection, measure and control device; described real-time data record system protects monitor server and is connected with continuing by cable, and the described guarantor's monitor server that continues is connected with remote condition monitoring center communication by network.
2. relaying protection Condition-based maintenance system according to claim 1 is characterized in that: described real-time data record system is real-time wave-recoding device, is used for real-time recorder data is uploaded to the Preset Time gap periods guarantor's monitor server that continues.
3. relaying protection Condition-based maintenance system according to claim 2; it is characterized in that: described real-time wave-recoding device comprises analogue collection module, switching value acquisition module and microprocessor; the output of analogue collection module and switching value acquisition module is connected into respectively the input port of microprocessor; be used for the interior current/voltage value of standing, switching value information are carried out Real-time Collection, form recorded wave file.
4. a relaying protection repair based on condition of component method, is characterized in that, the method comprises the following steps:
(1) relaying protection, measure and control device to the current sample passage of need monitoring sample be protected electric current, measure electric current, gather this interval busbar voltage and obtain voltage value, gather this interval switching value state information, and will deliver to the status monitoring server in above-mentioned Information Monitoring;
(2) record in real time wave system system record ripple in real time, will deliver to the status monitoring server on real-time recorder data with Fixed Time Interval;
(3) remote condition monitoring center Access status monitor server, the information that will gather is carried out the comparative analysis of system:
(i) protective current and measurement electric current are compared, if in-phase current is protected and measured collection value error greater than current limit, i.e. alarm maintenance;
(ii) contrast relaying protection, measure and control device and record in real time the voltage sample value that send on all intervals on the bus that wave system system uploads, a certain escapement phase voltage sampled value and other device voltage sample value error greater than the voltage limit value if sentence, i.e. this device voltage acquisition channel abnormal of alarm;
(iii) contrast relaying protection, measure and control device and record in real time the on-off state information of sending on wave system system, if same to open inconsistent into existence be alarm, the prompting maintenance.
CN 201110006900 2011-01-13 2011-01-13 System and method for maintaining condition of relay protection CN102064612B (en)

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