CN107843800A - Supply network monitoring method, apparatus and system - Google Patents
Supply network monitoring method, apparatus and system Download PDFInfo
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- CN107843800A CN107843800A CN201710989685.0A CN201710989685A CN107843800A CN 107843800 A CN107843800 A CN 107843800A CN 201710989685 A CN201710989685 A CN 201710989685A CN 107843800 A CN107843800 A CN 107843800A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a kind of supply network monitoring method, apparatus and system, is related to electric power networks monitoring technology field, and this method includes：The Monitoring Data of each monitoring point in supply network is obtained, wherein, the Monitoring Data includes current data, breaker condition data and online insulation resistance data；Judge whether the supply network breaks down according to the Monitoring Data, wherein, the failure includes short trouble or insulation fault；If it is, obtain the offline insulation resistance data in failure section in the supply network；The damage situations in the failure section are determined according to the offline insulation resistance data；The relative breaker separating brake or combined floodgate in the failure section are controlled according to the damage situations.Supply network monitoring method provided by the invention, apparatus and system, it is possible to reduce the fault distinguishing of supply network and processing time, improve the operational reliability of grid equipment.
Description
Technical field
The present invention relates to electric power networks monitoring technology field, more particularly, to a kind of supply network monitoring method, device and
System.
Background technology
The dc source in the places such as power plant, transformer station provides electricity for control load, living load, emergency lighting load etc.
Source.With power system development, the Microcomputer of load equipment, intelligence degree more and more higher, load equipment quantity also substantially increases
Add (DC equipment of intelligent station is about 1.6-1.8 times of normal station), correspondingly the reliability service to dc source it is also proposed that
Carry out requirements at the higher level.
When the hidden danger such as bad, the breaker mass defect of Graded coordination be present in DC suppling network, it may occur however that direct current supplies
During electric network short trouble situations such as air-break tripping, tripping operation or the multistage shunt tripping of bypassing the immediate leadership.At present, existing monitoring means
Above-mentioned accident can not be made and timely differentiate and handle, be generally to wait for operation maintenance personnel and send direct current to site inspection, then examination
Breaker or notification technique personnel processing.Because most of transformer station is unattended, fault distinguishing and processing time are extended,
The operational reliability of grid equipment is had a strong impact on.
The content of the invention
In view of this, it is an object of the invention to provide a kind of supply network monitoring method, apparatus and system, to reduce confession
The fault distinguishing of electric network and processing time, improve the operational reliability of grid equipment.
In a first aspect, the embodiments of the invention provide a kind of supply network monitoring method, including：Obtain each in supply network
The Monitoring Data of individual monitoring point, wherein, the Monitoring Data includes current data, breaker condition data and online insulaion resistance
Data；Judge whether the supply network breaks down according to the Monitoring Data, wherein, the failure include short trouble or
Insulation fault；If it is, obtain the offline insulation resistance data in failure section in the supply network；According to the offline insulation
Resistance data determines the damage situations in the failure section；The mutually shut-off in the failure section is controlled according to the damage situations
Road device separating brake or combined floodgate.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, root
Judge whether the supply network occurs short trouble according to the Monitoring Data, including：Judge the current data whether right
In the range of the setting current answered, determine whether the supply network occurs short trouble；Or judge whether in tripping operation
The breaker condition data of position, determines whether the supply network occurs short trouble；
Judge whether the supply network occurs insulation fault according to the Monitoring Data, including：Judge described online exhausted
Whether edge resistance data is less than corresponding set resistor value, determines whether the supply network occurs insulation fault.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, when
When short trouble occurs for the supply network, the offline insulation resistance data for obtaining failure section in the supply network it
Before, methods described also includes：The position that the difference of the current data at both ends is more than to setting difference is defined as trouble point；Will
Branch road where the trouble point is defined as failure section；Or the breaker of the trouble point and the trouble point will be controlled
Subordinate's breaker between section be defined as failure section；According to the breaker condition data, the failure section is judged
Whether corresponding breaker, which is in, is divided position or tripping operation position；If not, control breaker open operation corresponding to the failure section.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, when
When insulation fault occurs for the supply network, the offline insulation resistance data for obtaining failure section in the supply network it
Before, methods described also includes：The branch road that the online insulation resistance data is less than corresponding set resistor value is defined as failure
Section；According to the breaker condition data, judge whether breaker corresponding to the failure section is in point position or tripping operation
Position；If not, control breaker open operation corresponding to the failure section.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, institute
The damage situations that the failure section is determined according to the offline insulation resistance data are stated, including：Judge the offline insulated electro
Hinder the Abnormal Insulation data that whether there is in data and be less than corresponding set resistor value；If it is, determine the failure section by
Damage, and position corresponding to the Abnormal Insulation data is defined as to the damaged points in the failure section；If not, determine the event
It is undamaged to hinder section.
With reference to the 4th kind of possible embodiment of first aspect, the embodiments of the invention provide the 5th of first aspect kind
Possible embodiment, wherein, it is described according to the damage situations control relative breaker separating brake in the failure section or
Close a floodgate, including：If the failure section is damaged, breaker open operation corresponding to the damaged points is controlled；If the failure road
Section is undamaged, controls breaker closing corresponding to the failure section.
With reference to the 4th kind of possible embodiment of first aspect, the embodiments of the invention provide the 6th of first aspect kind
Possible embodiment, wherein, when the failure section is impaired, methods described also includes：According to the circuit-breaker status number
According to, judge in the breaker in the damaged points higher level of the supply network whether there is in sub-gate position or tripping operation position
Breaker；If it is, the control breaker closing in sub-gate position or position of tripping.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 7th of first aspect kind, wherein, institute
Stating method also includes：State estimation report is generated according to the damage situations in the failure section；According to the relative breaker
The handling process of separating brake or combined floodgate, generation troubleshooting report；State estimation report and troubleshooting report are made
Host computer is uploaded to for failure monitoring report.
Second aspect, the embodiment of the present invention also provide a kind of supply network supervising device, including：First data acquisition mould
Block, for obtaining the Monitoring Data of each monitoring point in supply network, wherein, the Monitoring Data includes current data, open circuit
Device status data and online insulation resistance data；Breakdown judge module, for judging the power supply network according to the Monitoring Data
Whether network breaks down, wherein, the failure includes short trouble or insulation fault；Second data acquisition module, for working as
The judged result for stating breakdown judge module is that the offline insulation resistance data in failure section in the supply network is obtained when being；
Impaired determining module, for determining the damage situations in the failure section according to the offline insulation resistance data；Breaker control
Molding block, for controlling relative breaker separating brake or combined floodgate in the failure section according to the damage situations.
The third aspect, the embodiment of the present invention also provide a kind of supply network monitoring system, including such as above-mentioned second aspect
Supply network supervising device, in addition to the current acquisition module, the switching value that are connected respectively with the supply network supervising device are adopted
Collect module, online insulation monitoring module, offline insulation monitoring module and breaker operator module；
The current acquisition module is used to gather current data, and the switching value acquisition module is used to gather circuit-breaker status
Data, the online insulation monitoring module are used to gather online insulation resistance data, and the offline insulation monitoring module is used to adopt
Collect offline insulation resistance data, the breaker operator module is used to carry out breaking-closing operating to breaker.
The embodiment of the present invention brings following beneficial effect：
In the embodiment of the present invention, the Monitoring Data of each monitoring point in supply network is obtained, wherein, Monitoring Data includes electricity
Flow data, breaker condition data and online insulation resistance data；Judge whether supply network occurs event according to the Monitoring Data
Barrier, wherein, failure includes short trouble or insulation fault；If it is, obtain the offline insulated electro in failure section in supply network
Hinder data；The damage situations in failure section are determined according to the offline insulation resistance data；Failure road is controlled according to the damage situations
Relative breaker separating brake or combined floodgate in section.Supply network monitoring method provided by the invention, apparatus and system, by monitoring number
Differentiate according to failure, and then the damage situations in failure section are determined by the offline insulation resistance data in failure section, and
The relative breaker in failure section is handled according to damage situations, it is possible to achieve the isolation of the damaged points in failure section,
Ensure the normal operation of the grid equipment in uninfluenced section simultaneously, due to withouting waiting for artificial treatment during this, therefore
Reduce fault distinguishing and the processing time of supply network, improve the operational reliability of grid equipment.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the first schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention；
Fig. 2 is second of schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention；
Fig. 3 is the third schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the DC suppling network under the improper processing scene of Graded coordination；
Fig. 5 is the structural representation of supply network supervising device provided in an embodiment of the present invention；
Fig. 6 is the module composition schematic diagram of supply network monitoring system provided in an embodiment of the present invention；
Fig. 7 is the structural representation of supply network monitoring system provided in an embodiment of the present invention；
Fig. 8 is the operation principle schematic diagram of supply network monitoring system provided in an embodiment of the present invention；
Fig. 9 is the structural representation that open fault handles the DC suppling network under scene.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Current differentiation of the existing monitoring means to DC suppling network failure is grown with processing time, has had a strong impact on power network
The operational reliability of equipment, based on this, a kind of supply network monitoring method provided in an embodiment of the present invention, apparatus and system, no
Need to wait artificial treatment, it is possible to achieve the isolation of the damaged points in failure section, while ensure that the power network in uninfluenced section is set
Standby normal operation, fault distinguishing and the processing time of supply network are reduced, improve the operational reliability of grid equipment.
For ease of understanding the present embodiment, first to a kind of supply network monitoring side disclosed in the embodiment of the present invention
Method describes in detail.
Embodiment one：
The embodiment of the present invention by taking layered radiation type network as an example, is set mainly for DC suppling network in the supply network
It is equipped with voltage acquisition module, current acquisition module, switching value acquisition module, online insulation monitoring module, offline Insulation monitoring mould
Block and breaker operator module etc..Specifically, voltage acquisition module is used to gather the voltage number on each bar branch road or bus at different levels
According to；Current acquisition module includes DC current transformer, for gathering the electric current number at positive and negative bus at different levels or each DC feeder
According to；Switching value acquisition module includes auxiliary contacts of circuit breaker and switch acquisition unit, for gathering the breaker shape of breaker
State data, circuit-breaker status include dividing position, conjunction position and tripping operation position；Online insulation monitoring module senses including DC leakage current
Device, for gathering the both positive and negative polarity insulation against ground resistance data under branch road running status；Offline insulation monitoring module is used to gather respectively
Both positive and negative polarity insulation against ground resistance data below level bus and each breaker at branch road；Breaker operator module includes breaker
Electronic operating-controlling mechanism, for the instruction assigned according to monitoring, breaking-closing operating is carried out to relative breaker.Below with above-mentioned direct current
Supply network is background, illustrates supply network monitoring method provided in an embodiment of the present invention.
Fig. 1 is the first schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention, as shown in figure 1,
This method includes following steps：
Step S101, the Monitoring Data of each monitoring point in supply network is obtained, wherein, Monitoring Data includes electric current number
According to, breaker condition data and online insulation resistance data.
Specifically, the current acquisition module in above-mentioned supply network, switching value acquisition module, online insulation inspection can be passed through
Module is surveyed, gathers the current data of each monitoring point in the supply network, breaker condition data and online insulaion resistance respectively
The Monitoring Datas such as data, wherein, online insulation resistance data is the both positive and negative polarity insulation against ground resistance data under branch road running status.
Step S102, judge whether supply network breaks down according to above-mentioned Monitoring Data, wherein, failure includes short circuit event
Barrier or insulation fault.
According to Monitoring Datas such as the current data of acquisition, breaker condition data and online insulation resistance datas, can sentence
Whether the disconnected supply network breaks down.Specifically, when electric current is excessive or breaker is in tripping operation position, illustrate that the branch road is sent out
Short trouble (including shorted to earth failure) is given birth to；When short trouble occurs, breaker corresponding to trouble point should trip, failure
The breaker of point higher level should not trip；When insulation against ground resistance is less than corresponding setting valve, illustrate the branch road insulation against ground
It is abnormal, namely insulation fault be present.Therefore, can decide whether that short-circuit event occurs according to current data and breaker condition data
Barrier, and with the presence or absence of the subsidiary breaker tripping failure of short trouble, the improper failure of Graded coordination etc., wherein, Graded coordination
Improper failure includes bypass the immediate leadership tripping fault and multistage shunt tripping failure；It can decide whether exist absolutely according to online insulation resistance data
Reason hinders.
Step S103, in the event of above-mentioned failure, obtain the offline insulation resistance data in failure section in supply network.
During in view of short trouble or insulation fault occur, electric current is larger so that temperature is higher, so as to cause power supply network
The circuit and device of network are damaged, such as insulating barrier breakage or aging, in order to realize Fault Isolation and recover power transmission, it is necessary to first pair event
Hinder section and carry out compromise state assessment, determine to need the section that isolates further according to assessment result and can be with the section of power transmission.Therefore,
When short trouble or insulation fault occurs, the offline insulaion resistance number in failure section is gathered by offline insulation monitoring module
According to the offline insulation resistance data is the both positive and negative polarity insulation against ground resistance data detected under off-position.
Step S104, the damage situations in failure section are determined according to above-mentioned offline insulation resistance data.
When offline insulation resistance data is less than corresponding set resistor value, illustrate correspondence position circuit or device it is exhausted
Edge layer damaged or aging, may cause Leaked Current of Line to Ground, therefore the position is in damaged condition, should keep apart.When offline insulaion resistance number
According to during set resistor value, illustrating that the circuit of correspondence position or device insulation against ground are good corresponding to reaching, thus the position not by
Damage, can give the position power transmission.
It is above-mentioned to determine that the damage situations in failure section are specially according to above-mentioned offline insulation resistance data：Judge above-mentioned offline
It whether there is the Abnormal Insulation data for being less than corresponding set resistor value in insulation resistance data；If it is, determine the failure road
Section is impaired, and position corresponding to Abnormal Insulation data is defined as to the damaged points in the failure section；If not, determine the failure road
Section is undamaged.
Step S105, the relative breaker separating brake or combined floodgate in failure section are controlled according to above-mentioned damage situations.
If above-mentioned failure section is damaged, breaker open operation corresponding to damaged points is controlled；If above-mentioned failure section not by
Damage, controls breaker closing corresponding to the failure section.Specifically, if failure section is overall undamaged, it may be possible to instantaneous event
It is short-circuit caused by barrier, meet power transmission condition, then breaker closing corresponding to failure section is controlled by breaker operator module；If
There are multiple damaged points in failure section, then pass through breaker corresponding to damaged points of the breaker operator module control in most higher level
Separating brake.The isolation of the damaged points in failure section has been achieved in that, while ensure that the normal of the grid equipment in uninfluenced section
Operation, namely breakdown judge is realized with isolating the automation of power transmission, in the time with being preferably minimized fault impact in scope, carry
High overhaul efficiency.
In the embodiment of the present invention, the Monitoring Data of each monitoring point in supply network is obtained, wherein, Monitoring Data includes electricity
Flow data, breaker condition data and online insulation resistance data；Judge whether supply network occurs event according to the Monitoring Data
Barrier, wherein, failure includes short trouble or insulation fault；If it is, obtain the offline insulated electro in failure section in supply network
Hinder data；The damage situations in failure section are determined according to the offline insulation resistance data；Failure road is controlled according to the damage situations
Relative breaker separating brake or combined floodgate in section.Supply network monitoring method provided by the invention, failure is entered by Monitoring Data
Row differentiates, and then the damage situations in failure section are determined by the offline insulation resistance data in failure section, and according to impaired feelings
Condition is handled the relative breaker in failure section, it is possible to achieve the isolation of the damaged points in failure section, while ensure not
The normal operation of the grid equipment in impacted section, due to withouting waiting for artificial treatment during this, therefore reduce power supply
The fault distinguishing of network and processing time, improve the operational reliability of grid equipment.
Fig. 2 is second of schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention, as shown in Fig. 2
By taking the short trouble in DC suppling network as an example, after the Monitoring Data of each monitoring point in obtaining supply network, the party
Method includes following steps：
Step S201, judge the current data in Monitoring Data whether in the range of corresponding setting current.If it is, hold
Row step S202；If not, perform step S203.
Step S202, judge to whether there is the breaker condition data in tripping operation position in above-mentioned Monitoring Data.If it is,
Determine that short trouble occurs for the supply network, and perform step S203；If not, perform step S212：Determine the direct current supply
Short trouble is not present in network.
The subsidiary breaker tripping failure of short trouble can so be identified.It should be noted that above-mentioned steps S201
It can be repeated no more here according to correct logic exchange order between step S202.
Step S203, the position that the difference of the current data at both ends is more than to setting difference are defined as trouble point.
Because trouble point has short circuit problem, (higher level) electric current is larger (short circuit current) above trouble point, below trouble point
(subordinate) no current or electric current very little, thus the electric current of trouble point both ends (higher level, subordinate or top, lower section) can differ compared with
Greatly, it can determine whether correspondence position is trouble point by the way that whether the difference of the current data at both ends is more than setting difference.Setting
Difference can be set according to actual conditions, be not construed as limiting here.For example, preset difference value is 20A (ampere), if above certain breaker
Electric current be 22A, the electric current of lower section is 0A, then judges the breaker for trouble point.
Step S204, failure section is determined according to above-mentioned trouble point.
The embodiments of the invention provide two kinds of specific embodiments, are respectively：(1) branch road where trouble point is determined
For failure section；(2) section between the breaker for controlling trouble point and subordinate's breaker of trouble point is defined as failure road
Section.For mode (1), the division scope in failure section is larger, and the investigation subsequently to damaged points is more accurate, but speed is slow；It is right
In mode (2), the division scope in failure section is smaller, and the investigation speed subsequently to damaged points is fast, but investigates not comprehensive enough.Can
In a manner of selecting to determine failure section according to actual conditions, it is not construed as limiting here.
Step S205, according to above-mentioned breaker condition data, judge whether breaker corresponding to above-mentioned failure section is in
Divide position or tripping operation position.If it is, perform step S207；If not, perform step S206.
Step S206, control breaker open operation corresponding to above-mentioned failure section.
Specifically, send separating brake order and give breaker operator module, breaker operator module is performed above-mentioned failure section
The sub-switching operation of corresponding breaker.Can so strong office reason be carried out to breaker tripping failure, prevent breaker tripping event
Barrier causes bigger destruction to the supply network.
Step S207, obtain the offline insulation resistance data in above-mentioned failure section.
Step S208, judge to whether there is the insulation for being less than corresponding set resistor value in above-mentioned offline insulation resistance data
Abnormal data.If it is, perform step S209, step S210；If not, perform step S211.
Step S209, determine that above-mentioned failure section is damaged, and position corresponding to Abnormal Insulation data is defined as the failure
The damaged points in section.
Step S210, control breaker open operation corresponding to above-mentioned damaged points.
Step S211, determine that above-mentioned failure section is undamaged, and control breaker closing corresponding to the failure section.
The detailed process of some steps in above-mentioned Fig. 2 repeats no more here with the description in foregoing Fig. 1.
Fig. 3 is the third schematic flow sheet of supply network monitoring method provided in an embodiment of the present invention, as shown in figure 3,
By taking the insulation fault in DC suppling network as an example, after the Monitoring Data of each monitoring point in obtaining supply network, the party
Method includes following steps：
Step S301, judges whether the online insulation resistance data in Monitoring Data is less than corresponding set resistor value.Such as
Fruit is to determine that insulation fault occurs for the supply network, performs step S302；If not, perform step S310：Determine that the direct current supplies
Insulation fault is not present in electric network.
Step S302, the branch road that above-mentioned online insulation resistance data is less than corresponding set resistor value is defined as failure road
Section.
Step S303, the breaker condition data in Monitoring Data, judge breaker corresponding to above-mentioned failure section
Whether it is in and divides position or tripping operation position.If it is, perform step S305；If not, perform step S304.
Step S304, control breaker open operation corresponding to above-mentioned failure section.
Step S305, obtain the offline insulation resistance data in above-mentioned failure section.
Step S306, judge to whether there is the insulation for being less than corresponding set resistor value in above-mentioned offline insulation resistance data
Abnormal data.If it is, perform step S307, step S308；If not, perform step S309.
Step S307, determine that above-mentioned failure section is damaged, and position corresponding to Abnormal Insulation data is defined as the failure
The damaged points in section.
Step S308, control breaker open operation corresponding to above-mentioned damaged points.
Step S309, determine that above-mentioned failure section is undamaged, and control breaker closing corresponding to the failure section.
The detailed process of some steps in above-mentioned Fig. 3 repeats no more with described above here.
Influenceed in view of the improper failure of Graded coordination to caused by supply network, in order to further in scope by failure shadow
Sound is preferably minimized, and when above-mentioned failure section is impaired, the above method also includes：According to above-mentioned breaker condition data, judge to supply
It whether there is the breaker in sub-gate position or position of tripping in the breaker in damaged points higher level of electric network；If it is,
This is controlled to be in sub-gate position or the breaker closing for position of tripping；If not, do not process.So, tripping operation of bypassing the immediate leadership can be handled
Failure and multistage shunt tripping failure, it is further ensured that the normal operation of the grid equipment in uninfluenced section.
Further, the present situation of supply network is understood in order to facilitate work about electric power personnel, the above method also includes：Root
According to the Monitoring Data of acquisition, breakdown judge result and fault coverage (failure section), generation failure anticipation report；According to above-mentioned event
Hinder the damage situations generation state estimation report in section；It is raw according to the handling process of the separating brake of above-mentioned relative breaker or combined floodgate
Reported into troubleshooting；Using failure anticipation report, state estimation report and troubleshooting report as in failure monitoring report
Reach host computer.
Specifically, failure anticipation report includes original state monitoring information, the variable quantity of process status, fault incidence
Etc. content.State estimation report includes the content such as detection range and result, the description of failure situation.Troubleshooting report includes open circuit
Device operating process, Fault Isolation section, recover the contents such as section.The service work of work about electric power personnel is so facilitated, is improved
Overhaul efficiency.
The embodiment of the present invention additionally provides the processing scene of a kind of short trouble and Graded coordination not instantly, referring to Fig. 4, place
It is as follows to manage scene：
【Original state monitors】One-level bus is powered；QF11, QF12 close position, and its branch road is powered；QF1n divides position, and its branch road is not
It is powered；Two level bus is powered；QF21, QF22 close position, and its branch road is powered；QF2n divides position, and its branch road is not charged；Associated voltage, electricity
Stream, insulation and switching value are without exception.
【External cause】Failure-description：The two poles of the earth short circuit occurs for A points on loop between QF21 and QF31.
【Process status monitors】Change detection information is：QF11 change in location (being changed into position of tripping from closing position), QF21 positions
Change (being changed into position of tripping from closing position), QF11 and branch road bipolar current mutation where QF21 exceed under corresponding setting valve, QF11
Side and the voltage with bus and each branch voltage monitoring point be changed into 0.
【Failure anticipation report】Tentatively it is judged as DC suppling network failure.Fault coverage：QF11-QF21、QF21-
QF31.Fault type：The two poles of the earth short circuit.
【State estimation is reported】Determine that QF11 lower sections and institute's band bus and each branch road are scope to be detected, QF11 breaks for boundary
Road device, carry out being segmented offline Insulation monitoring.Offline insulation monitoring module carries out offline exhausted to QF31, QF21, QF11 outlet successively
Edge detects.Testing result finds that QF31 outlets insulation meets the requirements, but QF21 outlets insulation is undesirable.Testing result is：
QF21-QF31 section defective insulations.
【Troubleshooting is reported】In the case where QF21 disconnects, QF11 can normally close a floodgate.Sent out to breaker operator module
Go out operational order (QF21 separating brakes, QF11 close a floodgate), performed by motor-operating mechanism.
In summary, method provided in an embodiment of the present invention has the advantages that：(1) offline Insulation monitoring mould is passed through
The testing result of block, diagnosis can be made to faulty line, prevents power transmission in faulty line；(2) by feeder line branch current
Judgement, the air switch of tripping can be identified, and it is divided by force；(3) can realize caused by transient fault
It is spaced apart quick coincidence (combined floodgate again) function of tripping operation (circuit breaker trip), avoids the further expansion of accident, improve maintenance effect
Rate.
Embodiment two：
Fig. 5 is the structural representation of supply network supervising device provided in an embodiment of the present invention, as shown in figure 5, the device
Including：
First data acquisition module 51, for obtaining the Monitoring Data of each monitoring point in supply network, wherein, monitor number
According to including current data, breaker condition data and online insulation resistance data；
Breakdown judge module 52, for judging whether supply network breaks down according to above-mentioned Monitoring Data, wherein, failure
Including short trouble or insulation fault；
Second data acquisition module 53, for when the judged result of above-mentioned breakdown judge module 52 is is, obtaining power supply
The offline insulation resistance data in failure section in network；
Impaired determining module 54, for determining the damage situations in failure section according to above-mentioned offline insulation resistance data；
Breaker control module 55, for controlled according to above-mentioned damage situations relative breaker separating brake in failure section or
Close a floodgate.
In the embodiment of the present invention, the first data acquisition module 51 obtains the Monitoring Data of each monitoring point in supply network,
Wherein, Monitoring Data includes current data, breaker condition data and online insulation resistance data；The basis of breakdown judge module 52
The Monitoring Data judges whether supply network breaks down, wherein, failure includes short trouble or insulation fault；When above-mentioned failure
The judged result of judge module 52 is when being, the second data acquisition module 53 obtains the offline insulation in failure section in supply network
Resistance data；Impaired determining module 54 determines the damage situations in failure section according to the offline insulation resistance data；Breaker control
Molding block 55 controls relative breaker separating brake or combined floodgate in failure section according to the damage situations.Power supply network provided by the invention
Network supervising device, failure is differentiated by Monitoring Data, and then determined by the offline insulation resistance data in failure section
The damage situations in failure section, and the relative breaker in failure section is handled according to damage situations, it is possible to achieve therefore
Hinder the isolation of the damaged points in section, while ensure the normal operation of the grid equipment in uninfluenced section, due to during this not
Need to wait artificial treatment, therefore reduce fault distinguishing and the processing time of supply network, improve the operation of grid equipment
Reliability.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
Specific work process, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
Embodiment three：
Fig. 6 is the module composition schematic diagram of supply network monitoring system provided in an embodiment of the present invention, as shown in fig. 6, should
System includes the supply network supervising device 65 such as above-mentioned embodiment two, in addition to is connected respectively with supply network supervising device 65
Voltage acquisition module 61, current acquisition module 62, switching value acquisition module 63, online insulation monitoring module 64, offline insulation
Detection module 66 and breaker operator module 67.
Voltage acquisition module 61 is used for collection voltages data, and current acquisition module 62 is used to gather current data, switching value
Acquisition module 63 is used to gather breaker condition data, and online insulation monitoring module 64 is used to gather online insulation resistance data,
Offline insulation monitoring module 66 is used to gather offline insulation resistance data, and breaker operator module 67 is used for point for controlling breaker
"on" position.
Specifically, the structural representation of supply network monitoring system shown in Figure 7, each acquisition module, detection mould
Block and breaker operator module 67 form by correlation unit and auxiliary device, and each unit carries out serial communication with monitoring host computer.
For the power supply network of layered radiation type, correlation unit, auxiliary device and supervising device (monitoring can be set up in subordinate's bus
Slave), supply network supervising device 65 includes monitoring host computer (higher level) and monitoring slave (subordinate), and the superior and the subordinate's supervising device uses
Master slave mode is coordinated.Each module concrete condition is as follows：
Voltage acquisition module 61：Voltage acquisition module 61 includes voltage acquisition unit and each collection point.Collection point is connected on
Need on the branch road and bus that monitor, for gathering corresponding magnitude of voltage.Voltage acquisition unit collects each monitoring point
Magnitude of voltage branch collects, and transmit data to main frame by RS485 order wires reads for supply network supervising device 65, finally obtains
Know the size of each monitoring point voltage.
Current acquisition module 62：Current acquisition module 62 includes the DC current of current acquisition unit and installation in systems
Transformer.The module is used for the electric current for measuring each DC feeder and bus.DC current transformer is based on Hall effect, the module
It is mainly used in gathering the fault curre of faulty line.On the basis of original straight-flow system, in the positive and negative mother of each branch road
Install the DC current transformer being consistent with the branch road rated current on line additional, realize that the electric current of whole straight-flow system monitors entirely.
Switching value acquisition module 63：Including auxiliary contacts of circuit breaker and switch acquisition unit, realize to breaker point position,
Close the collection of position and position of tripping.
Online insulation monitoring module 64：It is identical with existing direct-current insulation monitoring device, including be installed on below breaker and prop up
The DC leakage flow sensor and monitoring unit on road, realize the both positive and negative polarity insulation against ground resistance detection under branch road running status.
Offline insulation monitoring module 66：Including the monitoring point at bus and below each breaker at branch road and offline insulation inspection
Survey control unit.The enforcement body assessed as post-failure state, according to fixed fault incidence, wherein voltage it will become
It is set to scope to be detected for 0 part, will be located at has electric part and without will make detection range band between electric part and once closing a floodgate
The breaker for having DC voltage is set to border breaker, is boundary with air-break (disconnecting switch), treats in detection range
Current supply circuit and air-break (disconnecting switch) itself carry out graded insulation detection, determine the insulation in scope to be detected
Situation.
Supply network supervising device 65：Including monitoring host computer and monitoring slave, be mainly used in data processing, logic judgment and
Intelligent control；Data processing is carried out to voltage, electric current, online insulation and circuit-breaker status amount, fault type and scope are carried out
Differentiate, analyze the testing result that offline insulation monitoring module 66 provides, and formulate troubleshooting strategy；Offline insulaion resistance is reached
Isolated less than the current supply circuit section of setting valve and supply network below, power transmission is carried out to remainder.
Supply network supervising device 65 is additionally operable to upload failure monitoring report：After failure generation, after state estimation, at failure
Failure anticipation report, state estimation report, troubleshooting report should be formed after reason respectively, it is reported above while push to upper
Machine.Failure anticipation report includes the contents such as original state monitoring information, the variable quantity of process status, fault incidence.State
Assessment report includes the content such as detection range and result, the description of failure situation.Troubleshooting report include breaker operator flow,
Fault Isolation section, recover the contents such as section.
Breaker operator module 67：Including the electronic operating-controlling mechanism of breaker and circuit breaker control unit, according to supply network
The instruction that supervising device 65 is assigned, breaking-closing operating is carried out to relative breaker.
Further, said system also includes man-machine interface, and the man-machine interface includes Touch Screen, button and instruction warning
Lamp, operated by Field Force, it is possible to achieve in real time with the checking of historical data, parameter is checked and is set, the function such as control manually.
Operation principle schematic diagram shown in Figure 8, the operation principle of above-mentioned supply network monitoring system are as follows：
After the system electrification or reset, into self-test state, initialization is completed.Self-test is by rear, into status monitoring
Stage, state-detection mainly detect the position of the switch (circuit-breaker status), voltage and current of each collection point etc..When there is voltage
When the external causes such as mutation, current break and switch changed position (circuit-breaker status change) occur, supply network supervising device 65 will obtain
Analog quantity and switching value be converted to digital quantity, complete corresponding floating-point operation；According to voltage, electric current, switching value and insulation etc.
Information judges to the DC suppling network monitored；If failure, then offline Insulation monitoring, insulation are carried out to fault branch
Numerical value reach require, after determining power transmission scope, then issue divide-shut brake instruct to motor-operating mechanism complete respective switch point, close
Lock operates, while exports failure monitoring report and warning information；When it is not failure to judge, then the status monitoring stage is returned to, after
Continuous monitoring.
System provided in an embodiment of the present invention can not only handle short trouble, insulation fault etc., can also handle open circuit
Failure, referring to Fig. 9, the processing scene under open fault is as follows：
【Original state monitors】QF11 is divides position, and the voltage of each monitoring point is kept in setting range above loop where it
Constant, the voltage of each monitoring point in lower section is 0.
【External cause】Live (remote control) hand closes QF11.
【Process status monitors】Monitor QF11 change in location (being changed into closing position from a point position), each prison below loop where QF11
The voltage of measuring point is unchanged or changes but not in setting range, such as the pole of voltage one (the two poles of the earth) is less than adjusting lower limit, other
Monitoring information is unchanged.
【Failure anticipation report】Logic judgment and report content are DC suppling network failure.Fault coverage：QF11, failure
Type：Open a way certain pole (the two poles of the earth).
【State estimation is reported】Without detection range (because anticipation failure is QF11 internal faults, non-boundary breaker, Wu Fajin
The offline Insulation monitoring of row), without assessing.
【Troubleshooting is reported】Without breaker operator, only information reports that content is QF11 internal faults, pending.
In summary, above-mentioned supply network monitoring system can monitor the voltage of each section of DC suppling network, electricity in real time
Data volume and the dc circuit breaker quantity of states such as stream, insulation, when faulty generation, system can interpolate that fault type and model
Enclose, realize Fault Isolation automatically, recover power transmission, in the time with being preferably minimized fault impact in scope, improve overhaul efficiency.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
Specific work process, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
Supply network supervising device provided in an embodiment of the present invention and system, supervised with the supply network that above-described embodiment provides
Prosecutor method has identical technical characteristic, so can also solve identical technical problem, reaches identical technique effect.
Flow chart and block diagram in accompanying drawing show system, method and the computer journey of multiple embodiments according to the present invention
Architectural framework in the cards, function and the operation of sequence product.At this point, each square frame in flow chart or block diagram can generation
The part of one module of table, program segment or code, a part for the module, program segment or code include one or more use
In the executable instruction of logic function as defined in realization.It should also be noted that marked at some as in the realization replaced in square frame
The function of note can also be with different from the order marked in accompanying drawing generation.For example, two continuous square frames can essentially base
Originally it is performed in parallel, they can also be performed in the opposite order sometimes, and this is depending on involved function.It is also noted that
It is the combination of each square frame and block diagram in block diagram and/or flow chart and/or the square frame in flow chart, can uses and perform rule
Fixed function or the special hardware based system of action are realized, or can use the group of specialized hardware and computer instruction
Close to realize.
What the embodiment of the present invention was provided is powered the computer program product of method for monitoring network, including stores place
The computer-readable recording medium of the executable non-volatile program code of device is managed, the instruction that described program code includes can be used for
The method described in previous methods embodiment is performed, specific implementation can be found in embodiment of the method, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed method, apparatus and system, can be with
Realize by another way.Device embodiment described above is only schematical, for example, the division of the unit,
Only a kind of division of logic function, can there is other dividing mode when actually realizing, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The mutual coupling of opinion or direct-coupling or communication connection can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in the executable non-volatile computer read/write memory medium of a processor.Based on such understanding, the present invention
The part that is substantially contributed in other words to prior art of technical scheme or the part of the technical scheme can be with software
The form of product is embodied, and the computer software product is stored in a storage medium, including some instructions are causing
One computer equipment (can be personal computer, server, or network equipment etc.) performs each embodiment institute of the present invention
State all or part of step of method.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with
The medium of store program codes.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
- A kind of 1. supply network monitoring method, it is characterised in that including：The Monitoring Data of each monitoring point in supply network is obtained, wherein, the Monitoring Data includes current data, breaker shape State data and online insulation resistance data；Judge whether the supply network breaks down according to the Monitoring Data, wherein, the failure include short trouble or Insulation fault；If it is, obtain the offline insulation resistance data in failure section in the supply network；The damage situations in the failure section are determined according to the offline insulation resistance data；The relative breaker separating brake or combined floodgate in the failure section are controlled according to the damage situations.
- 2. according to the method for claim 1, it is characterised in that whether the supply network is judged according to the Monitoring Data Generation short trouble, including：The current data is judged whether in the range of corresponding setting current, determines whether the supply network occurs short-circuit event Barrier；Or the breaker condition data in tripping operation position is judged whether, determine whether the supply network occurs short-circuit event Barrier；Judge whether the supply network occurs insulation fault according to the Monitoring Data, including：Judge whether the online insulation resistance data is less than corresponding set resistor value, determine whether the supply network occurs Insulation fault.
- 3. according to the method for claim 1, it is characterised in that described to obtain when short trouble occurs for the supply network Take in the supply network before the offline insulation resistance data in failure section, methods described also includes：The position that the difference of the current data at both ends is more than to setting difference is defined as trouble point；Branch road where the trouble point is defined as failure section；Or will control the breaker of the trouble point with it is described Section between subordinate's breaker of trouble point is defined as failure section；According to the breaker condition data, judge whether breaker corresponding to the failure section is in point position or tripping operation Position；If not, control breaker open operation corresponding to the failure section.
- 4. according to the method for claim 1, it is characterised in that described to obtain when insulation fault occurs for the supply network Take in the supply network before the offline insulation resistance data in failure section, methods described also includes：The branch road that the online insulation resistance data is less than corresponding set resistor value is defined as failure section；According to the breaker condition data, judge whether breaker corresponding to the failure section is in point position or tripping operation Position；If not, control breaker open operation corresponding to the failure section.
- 5. according to the method for claim 1, it is characterised in that described according to determining the offline insulation resistance data The damage situations in failure section, including：Judge to whether there is the Abnormal Insulation data for being less than corresponding set resistor value in the offline insulation resistance data；If it is, determining that the failure section is damaged, and position corresponding to the Abnormal Insulation data is defined as the failure The damaged points in section；If not, determine that the failure section is undamaged.
- 6. according to the method for claim 5, it is characterised in that described to control the failure section according to the damage situations Interior relative breaker separating brake or combined floodgate, including：If the failure section is damaged, breaker open operation corresponding to the damaged points is controlled；If the failure section is undamaged, breaker closing corresponding to the failure section is controlled.
- 7. according to the method for claim 5, it is characterised in that when the failure section is impaired, methods described also includes：According to the breaker condition data, judge in the breaker in the damaged points higher level of the supply network whether In the presence of the breaker in sub-gate position or position of tripping；If it is, the control breaker closing in sub-gate position or position of tripping.
- 8. according to the method for claim 1, it is characterised in that methods described also includes：State estimation report is generated according to the damage situations in the failure section；According to the handling process of the separating brake of the relative breaker or combined floodgate, generation troubleshooting report；State estimation report and troubleshooting report are uploaded to host computer as failure monitoring report.
- A kind of 9. supply network supervising device, it is characterised in that including：First data acquisition module, for obtaining the Monitoring Data of each monitoring point in supply network, wherein, the Monitoring Data Including current data, breaker condition data and online insulation resistance data；Breakdown judge module, for judging whether the supply network breaks down according to the Monitoring Data, wherein, the event Barrier includes short trouble or insulation fault；Second data acquisition module, for when the judged result of the breakdown judge module is is, obtaining the supply network The offline insulation resistance data in middle failure section；Impaired determining module, for determining the damage situations in the failure section according to the offline insulation resistance data；Breaker control module, for controlling relative breaker separating brake or conjunction in the failure section according to the damage situations Lock.
- 10. a kind of supply network monitoring system, it is characterised in that including the supply network monitoring as described in above-mentioned claim 9 Device, in addition to be connected respectively with the supply network supervising device current acquisition module, switching value acquisition module, it is online absolutely Edge detection module, offline insulation monitoring module and breaker operator module；The current acquisition module is used to gather current data, and the switching value acquisition module is used to gather circuit-breaker status number According to the online insulation monitoring module is used to gather online insulation resistance data, and the offline insulation monitoring module is used to gather Offline insulation resistance data, the breaker operator module are used to carry out breaking-closing operating to breaker.
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| CN109345752A (en) * | 2018-12-05 | 2019-02-15 | 合肥能安科技有限公司 | A kind of electrical safety monitoring and pre-alarming method and device |
| CN112636474A (en) * | 2020-12-16 | 2021-04-09 | 湖南小快智造电子科技有限公司 | Intelligent power utilization supervision method |
| CN113138308A (en) * | 2020-01-17 | 2021-07-20 | 宝山钢铁股份有限公司 | Remote real-time monitoring system for insulation state of roller way motor in IT power supply system |
| CN113281621A (en) * | 2021-01-26 | 2021-08-20 | 镇江赛尔尼柯自动化有限公司 | Ship equipment fault diagnosis device based on offline insulation monitoring and use method |
| CN113777519A (en) * | 2021-08-31 | 2021-12-10 | 云南电网有限责任公司保山供电局 | Monitoring method, system, device and medium for direct current power supply system |
| CN114079322A (en) * | 2020-08-21 | 2022-02-22 | 上海良信电器股份有限公司 | Breaker data management method and smart grid system |
| CN114384376A (en) * | 2022-03-23 | 2022-04-22 | 浙江浙能能源服务有限公司 | Fault classification positioning method for direct-current power distribution network |
| CN116470649A (en) * | 2023-05-09 | 2023-07-21 | 国网山东省电力公司莱西市供电公司 | Power distribution network reliability judging and early warning system based on data communication |
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| CN116470649A (en) * | 2023-05-09 | 2023-07-21 | 国网山东省电力公司莱西市供电公司 | Power distribution network reliability judging and early warning system based on data communication |
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