CN104062531A - Long-distance verification method, device and system for relaying protection - Google Patents
Long-distance verification method, device and system for relaying protection Download PDFInfo
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- CN104062531A CN104062531A CN201410350705.6A CN201410350705A CN104062531A CN 104062531 A CN104062531 A CN 104062531A CN 201410350705 A CN201410350705 A CN 201410350705A CN 104062531 A CN104062531 A CN 104062531A
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Abstract
The invention provides a long-distance verification method, device and system for relaying protection. According to the invention, a long-distance verification center can automatically obtain measurement data of each interval of the relaying protection in a normal work state of a relaying protection device and can automatically analyze and judge according to the measurement data to determine whether each interval is normal or not. The long-distance verification center is capable of performing automatic detecting; compared with manual detection, for the invention, the detection efficiency is improved; the relaying protection device can continuously operate so that the working efficiency of the relaying protection device is improved.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of relay protection remote checking method, Apparatus and system.
Background technology
According to the requirement of " relay protection and power grid security aut.eq. inspection regulations ", relay 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.
Along with the quantity of transformer station and transmission line of electricity is more and more; protection, the number of control devices sharply increases, and its inspection workload is large, single is checked length consuming time, the operation that need to have a power failure of inspection period equipment; therefore reduced plant factor, and labour has been proposed to severe requirement.And the remote mountain area of part transformer station, The distance is far and the mountain is high, and field test cost can be in any more.
Therefore need now a kind of method of remotely, automatically protective relaying device being overhauled, to substitute the work of manually protective relaying device being tested.
Summary of the invention
The invention provides a kind of relay protection remote checking method, Apparatus and system, the present invention can be remotely, automatically protective relaying device is overhauled, and substitutes and manually protective relaying device is tested.
To achieve these goals, the invention provides following technological means:
A kind of relay protection remote checking method, comprising:
Detect server from relay protection and obtain the measurement data at least one interval on bus, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
The switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Preferably, utilize described measurement data successively the switching value output to each interval and trip(ping) circuit carry out long-range verification and comprise:
Actual act time in measurement data corresponding each interval and deliberate action time are contrasted;
When both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal, otherwise determine that switching value is exported and trip(ping) circuit is normal.
Preferably, utilizing described measurement data successively the voltage acquisition circuit at each interval to be carried out to long-range verification comprises:
In at least one interval, determine an interval to be detected, obtain the first voltage sample value at described interval to be detected, and at least two voltage sample values outside described interval to be detected;
Described the first voltage sample value is contrasted with at least two voltage sample values respectively;
If described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determines that the voltage acquisition circuit at described interval to be detected is abnormal, otherwise determine that the voltage acquisition circuit at described interval to be detected is normal;
Successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above.
Preferably, utilizing described measurement data successively the current acquisition circuit at each interval to be carried out to long-range verification comprises:
The described protection at each interval is contrasted with three-phase current and described measurement three-phase current;
When both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal, otherwise determine that current acquisition circuit is normal.
Preferably, utilizing described measurement data successively the switching value input circuit at each interval to be carried out to long-range verification comprises:
Successively the on-off state at each interval and preset switches amount state are contrasted, determine that the switching value input circuit at this interval is abnormal if both are inconsistent, otherwise determine that the switching value input circuit at this interval is normal.
The long-range calibration equipment of a kind of relay protection, comprising:
Acquiring unit, obtain the measurement data at least one interval on bus for detecting server from relay protection, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
Judging unit, for utilizing described measurement data, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Preferably, described judging unit comprises:
The first judging unit, for contrasting the actual act time of measurement data corresponding each interval and deliberate action time; When both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal, otherwise determine that switching value is exported and trip(ping) circuit is normal;
The second judging unit, obtains the first voltage sample value at described interval to be detected in an interval to be detected for determining at least one interval, and at least two voltage sample values outside described interval to be detected; Described the first voltage sample value is contrasted with at least two voltage sample values respectively; If described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determines that the voltage acquisition circuit at described interval to be detected is abnormal, otherwise determine that the voltage acquisition circuit at described interval to be detected is normal; Successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above;
The 3rd judging unit, for contrasting the described protection at each interval with three-phase current and described measurement three-phase current; When both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal, otherwise determine that current acquisition circuit is normal;
The 4th judging unit, for successively the on-off state at each interval and preset switches amount state being contrasted, determines that the switching value input circuit at this interval is abnormal if both are inconsistent, otherwise determines that the switching value input circuit at this interval is normal.
The long-range check system of a kind of relay protection, comprising:
At least one measurement and Control Equipment for Relay Protection, the relay protection monitor server being connected with measurement and Control Equipment for Relay Protection described at least one by station level network, the long-range verification center being connected by electric power data network with described relay protection monitor server;
Described measurement and Control Equipment for Relay Protection, for by voltage sensor, to bus, sampling obtains voltage sample value, utilize current sensor to sample and obtain protection three-phase current and measurement three-phase current bus, gather the on-off state of isolating switch, described isolating switch is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server, described measurement data comprises voltage sample value, protection three-phase current, measures with three-phase current, on-off state and actual act time;
Described relay protection monitor server, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection is uploaded described at least one;
Described long-range verification center, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
The long-range check system of a kind of relay protection, comprising:
At least one protective relaying device, at least one measure and control device, the relay protection monitor server being connected with measure and control device with protective relaying device described at least one by station level network, the long-range verification center being connected by electric power data network with described relay protection monitor server;
Described protective relaying device, for utilizing current sensor to sample and obtain protection three-phase current bus, and transfers to described relay protection monitor server by described three-phase current;
Described measure and control device, for by voltage sensor, to bus, sampling obtains voltage sample value, utilize current sensor to sample and obtain measurement three-phase current bus, gather the on-off state of isolating switch, described isolating switch is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server, described measurement data comprises voltage sample value, measures with three-phase current, on-off state and actual act time;
Described relay protection monitor server, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection is uploaded described at least one;
Described long-range verification center, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Preferably, also comprise:
One end is connected with described protective relaying device, and the real-time record wave system system that server is connected is detected with described relay protection in one end, and described real-time record wave system system is used for extracting protection three-phase current, and described protection is sent to described relay protection detection server with three-phase current.
The invention provides a kind of relay protection remote checking method, Apparatus and system; medium-long range verification of the present invention center; can be under the state of the normal work of protective relaying device; the measurement data at each interval of automatic acquisition relay protection; and can automatically analyze judgement according to measurement data, and confirm that whether each interval is normal.Because the present invention is that long-range verification center is detected automatically, for manual detection, improve detection efficiency, and due to the present invention's protective relaying device of not stopping transport, so improved the work efficiency of protective relaying device.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the long-range check system of the disclosed a kind of relay protection of the embodiment of the present invention;
Fig. 2 is the structural representation of the long-range check system of the disclosed a kind of relay protection of the embodiment of the present invention;
Fig. 3 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention;
Fig. 4 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention;
Fig. 5 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention;
Fig. 6 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention;
Fig. 7 is the structural representation of the long-range calibration equipment of the disclosed a kind of relay protection of the embodiment of the present invention;
Fig. 8 is the structural representation of judging unit in the long-range calibration equipment of the disclosed a kind of relay protection of the embodiment of the present invention;
Fig. 9 is the structural representation of the long-range check system of the disclosed a kind of relay protection of the embodiment of the present invention;
Figure 10 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention;
Figure 11 is the structural representation of the long-range check system of disclosed another relay protection of the embodiment of the present invention.
Embodiment
Before the embodiment of the present invention, noun used " interval " in paper the present invention once, in electric system, the part that transformer station closely connects, has some common function by some forms.For example: the switchgear between inlet wire or outlet and bus; The bus relevant device being formed by isolating switch, isolation switch and grounding switch, using isolating switch and relevant device composition as interval, interval is virtual concept.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides the long-range check system of a kind of relay protection, comprising:
At least one measurement and Control Equipment for Relay Protection 100, the relay protection monitor server 200 being connected with measurement and Control Equipment for Relay Protection described at least one 100 by station level network A, the long-range verification center 300 being connected by electric power data network B with described relay protection monitor server; Protective relaying device 100 can gather the measurement data at least one interval on bus, and uploads described measurement data, and relay protection detects server 200 and receives and store described measurement data, by long-range verification center 300, long-range verification is carried out in each interval.Wherein at least one measurement and Control Equipment for Relay Protection is the structure that protective relaying device and measure and control device are integral type, has provided N protective relaying device as example in diagram, and N is natural number.The method of calibration at long-range verification center is provided below.
As shown in Figure 2, the invention provides a kind of remote checking method of relay protection, be applied to long-range verification center 300, the method specifically comprises:
Step S101: detect server 200 from relay protection and obtain the measurement data at least one interval on bus, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
Article one, on bus, there are multiple intervals; the corresponding interval of each measurement and Control Equipment for Relay Protection 100; relay protection self has stronger self-checking capability; but the maintenance of voltage acquisition circuit, current acquisition circuit, switching value input circuit, switching value output and trip(ping) circuit; need artificial detection, so emphasis of the present invention is the long-range verification that solves voltage acquisition circuit, current acquisition circuit, switching value input circuit, switching value output and trip(ping) circuit.For being carried out to long-range verification, each interval need to obtain the measurement data at each interval.
Step S102: the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Long-range verification central store has pre-set programs, is receiving after measurement data, and operation pre-set programs just can, to the long-range verification in each loop, in following embodiment be elaborated the process of each loop being carried out to long-range verification.
The invention provides a kind of relay protection remote checking method; this method medium-long range verification center can be under the state of the normal work of protective relaying device; the measurement data at each interval of automatic acquisition relay protection; and can automatically analyze judgement according to measurement data, and confirm that whether each interval is normal.Because the present invention is that long-range verification center is detected automatically, for manual detection, improve detection efficiency, and due to the present invention's protective relaying device of not stopping transport, so improved the work efficiency of protective relaying device.
Below above-mentioned steps S102 is elaborated, as shown in Figure 3, utilize described measurement data successively the switching value output to each interval and trip(ping) circuit carry out long-range verification and comprise:
Step S301: the actual act time in measurement data corresponding each interval and deliberate action time are contrasted, judge whether the error of actual act time and deliberate action time is greater than Preset Time threshold value;
Long-range verification center 300 sends a transmission order to measurement and Control Equipment for Relay Protection 100; measurement and Control Equipment for Relay Protection 100 is received after action command; carry out a trip-reclosure operation, the then time from tripping operation to combined floodgate by isolating switch, as the actual act time.In long-range verification center 300 with the pre-stored deliberate action time that has each switch, actual act time and deliberate action time are contrasted, if both errors in allowed band, can judge that switching value is exported and trip(ping) circuit is normal, otherwise undesired.
Step S302: when both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal;
Step S303: otherwise determine that switching value is exported and trip(ping) circuit is normal.
Preferably, as shown in Figure 4, utilize described measurement data successively the voltage acquisition circuit at each interval to be carried out to long-range verification and comprise:
Step S401: at least one interval, determine an interval to be detected, obtain the first voltage sample value at described interval to be detected, and at least two voltage sample values outside described interval to be detected;
Article one, on bus, equate when the voltage sample value at each interval of synchronization, so by the first voltage sample value at interval to be detected, first contrast with the voltage sample value at all the other intervals, when the voltage error of both homophases is greater than predetermined voltage threshold, the first voltage sample value is contrasted with the voltage sample value at another one interval again, this comparison process is carried out three to five times, if there is the voltage error of two or more comparing results to be all greater than predetermined voltage threshold, show that interval to be detected exists abnormal, need to rebuild.
If interval is as a comparison abnormal, the voltage sample value of contrast is abnormal, in the normal situation of device to be detected, the voltage error obtaining with abnormal voltage sample value may be greater than predetermined voltage threshold, so likely cause erroneous judgement situation to occur, in order to prevent this erroneous judgement situation, the present invention carries out comparison process repeatedly, has eliminated the generation of erroneous judgement situation.
Step S402: described the first voltage sample value is contrasted with at least two voltage sample values respectively, judge whether described the first voltage sample value and the in-phase voltage error of at least two voltage sample values are greater than predetermined voltage threshold;
Step S403: if described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determine that the voltage acquisition circuit at described interval to be detected is abnormal;
Step S404: otherwise determine that the voltage acquisition circuit at described interval to be detected is normal;
Step S405: successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above.
Preferably, as shown in Figure 5, utilize described measurement data successively the current acquisition circuit at each interval to be carried out to long-range verification and comprise:
Step S501: the described protection at each interval is contrasted with three-phase current and described measurement three-phase current, judge whether the protection in-phase current error of three-phase current and described measurement three-phase current is greater than current threshold;
On same interval, every electric current is consistent; the measurement and Control Equipment for Relay Protection at each interval; can obtain two electric currents; one is the protection three-phase current of relay protection circuit; the measurement three-phase current in a normal loop, both are consistent in theory, so protection is contrasted with three-phase current and measurement three-phase current; if both in-phase currents exist inconsistent situation, represent that relay protection circuit occurs abnormal.
Step S502: when both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal;
Step S503: otherwise determine that current acquisition circuit is normal.
Preferably, as shown in Figure 6, utilize described measurement data successively the switching value input circuit at each interval to be carried out to long-range verification and comprise:
Step S601: successively the on-off state at each interval and preset switches amount state are contrasted, judge that whether the on-off state at each interval consistent with preset switches amount state? enter step S602 if inconsistent, if unanimously enter step S603;
Step S602: determine that the switching value input circuit at this interval is abnormal if both are inconsistent;
Step S603: otherwise determine that the switching value input circuit at this interval is normal.
On same bus, the switch of isolating switch is predefined in advance, it is preset switches amount state, in theory institute spaced on-off state all should with preset switches amount state consistency, so when the on-off state at a certain interval and preset switches amount state are when inconsistent, represent that this interval switching value input circuit has extremely, in the time that both are consistent, represent that this interval switching value input circuit is normal.
Be more than long-range verification is carried out at long-range verification center automatically method to each interval, introduce device corresponding to this method below.
As shown in Figure 7, the present invention also provides a kind of long-range calibration equipment of relay protection, comprising:
Acquiring unit 100, obtain the measurement data at least one interval on bus for detecting server from relay protection, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
Judging unit 200, for utilizing described measurement data, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Preferably, as shown in Figure 8, described judging unit 200 comprises:
The first judging unit 201, for contrasting the actual act time of measurement data corresponding each interval and deliberate action time; When both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal, otherwise determine that switching value is exported and trip(ping) circuit is normal;
The second judging unit 202, obtains the first voltage sample value at described interval to be detected in an interval to be detected for determining at least one interval, and at least two voltage sample values outside described interval to be detected; Described the first voltage sample value is contrasted with at least two voltage sample values respectively; If described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determines that the voltage acquisition circuit at described interval to be detected is abnormal, otherwise determine that the voltage acquisition circuit at described interval to be detected is normal; Successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above;
The 3rd judging unit 203, for contrasting the described protection at each interval with three-phase current and described measurement three-phase current; When both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal, otherwise determine that current acquisition circuit is normal;
The 4th judging unit 204, for successively the on-off state at each interval and preset switches amount state being contrasted, determines that the switching value input circuit at this interval is abnormal if both are inconsistent, otherwise determines that the switching value input circuit at this interval is normal.
As shown in Figure 9, the present invention also provides a kind of relay protection long-range check system, and the protective relaying device in the measurement and Control Equipment for Relay Protection in native system and measure and control device are one, comprising:
At least one measurement and Control Equipment for Relay Protection 100, the relay protection monitor server 200 being connected with measurement and Control Equipment for Relay Protection described at least one by station level network A, the long-range verification center 300 being connected by electric power data network B with described relay protection monitor server;
Described measurement and Control Equipment for Relay Protection 100, for by voltage sensor TV, to bus, sampling obtains voltage sample value, utilize current sensor TA to sample and obtain protection three-phase current and measurement three-phase current bus, gather the on-off state of isolating switch CB, described isolating switch CB is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server, described measurement data comprises voltage sample value, protection three-phase current, measures with three-phase current, on-off state and actual act time; In Fig. 9, only describe as an example of measurement and Control Equipment for Relay Protection 1 example, other measurement and Control Equipment for Relay Protection similarly, do not repeat them here.
Described relay protection monitor server 200, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection is uploaded described at least one;
Described long-range verification center 300, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
As shown in figure 10, the present invention also provides a kind of relay protection long-range check system, and protective relaying device and measure and control device in the measurement and Control Equipment for Relay Protection in native system separate, and protective relaying device has upload function, comprising:
At least one protective relaying device 101, at least one measure and control device 102, the relay protection monitor server 200 being connected with measure and control device with protective relaying device described at least one by station level network, the long-range verification center 300 being connected with described relay protection monitor server;
Described protective relaying device 101, for utilizing current sensor TA to sample and obtain protection three-phase current bus, and transfers to described relay protection monitor server by described three-phase current;
Described measure and control device 102, for by voltage sensor TV, to bus, sampling obtains voltage sample value, utilize current sensor TA to sample and obtain measurement three-phase current bus, gather the on-off state of isolating switch CB, described isolating switch CB is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server 200, described measurement data comprises voltage sample value, measures with three-phase current, on-off state and actual act time; In Figure 10, only describe as an example of measurement and Control Equipment for Relay Protection 1 example, other measurement and Control Equipment for Relay Protection similarly, do not repeat them here.
Described relay protection monitor server 200, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection 100 is uploaded described at least one;
Described long-range verification center 300, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
Preferably, in the time that protective relaying device 101 does not have upload function, need to obtain protection three-phase current by real-time record wave system system 103, the long-range check system of relay protection also comprises:
One end is connected with described protective relaying device 101; the real-time record wave system system 103 that server 200 is connected is detected with described relay protection in one end; described real-time record wave system unites 103 for extracting protection three-phase current, and described protection is sent to described relay protection detection server 200 with three-phase current.In Figure 11, only describe as an example of measurement and Control Equipment for Relay Protection 1 example, other measurement and Control Equipment for Relay Protection similarly, do not repeat them here.
The invention provides the long-range check system of a kind of relay protection; native system medium-long range verification center; can be under the state of the normal work of protective relaying device; the measurement data at each interval of automatic acquisition relay protection; and can automatically analyze judgement according to measurement data, and confirm that whether each interval is normal.Because the present invention is that long-range verification center is detected automatically, for manual detection, improve detection efficiency, and due to the present invention's protective relaying device of not stopping transport, so improved the work efficiency of protective relaying device.
If the function described in the present embodiment method realizes and during as production marketing independently or use, can be stored in a computing equipment read/write memory medium using the form of SFU software functional unit.Based on such understanding, the part that the embodiment of the present invention contributes to prior art or the part of this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computing equipment, server, mobile computing device or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment same or similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a relay protection remote checking method, is characterized in that, comprising:
Detect server from relay protection and obtain the measurement data at least one interval on bus, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
The switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
2. the method for claim 1, is characterized in that, utilize described measurement data successively the switching value output to each interval and trip(ping) circuit carry out long-range verification and comprise:
Actual act time in measurement data corresponding each interval and deliberate action time are contrasted;
When both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal, otherwise determine that switching value is exported and trip(ping) circuit is normal.
3. the method for claim 1, is characterized in that, utilizes described measurement data successively the voltage acquisition circuit at each interval to be carried out to long-range verification and comprises:
In at least one interval, determine an interval to be detected, obtain the first voltage sample value at described interval to be detected, and at least two voltage sample values outside described interval to be detected;
Described the first voltage sample value is contrasted with at least two voltage sample values respectively;
If described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determines that the voltage acquisition circuit at described interval to be detected is abnormal, otherwise determine that the voltage acquisition circuit at described interval to be detected is normal;
Successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above.
4. the method for claim 1, is characterized in that, utilizes described measurement data successively the current acquisition circuit at each interval to be carried out to long-range verification and comprises:
The described protection at each interval is contrasted with three-phase current and described measurement three-phase current;
When both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal, otherwise determine that current acquisition circuit is normal.
5. the method for claim 1, is characterized in that, utilizes described measurement data successively the switching value input circuit at each interval to be carried out to long-range verification and comprises:
Successively the on-off state at each interval and preset switches amount state are contrasted, determine that the switching value input circuit at this interval is abnormal if both are inconsistent, otherwise determine that the switching value input circuit at this interval is normal.
6. the long-range calibration equipment of relay protection, is characterized in that, comprising:
Acquiring unit, obtain the measurement data at least one interval on bus for detecting server from relay protection, described measurement data comprises voltage sample value, protection three-phase current, measurement three-phase current, the actual act time of the on-off state of isolating switch and isolating switch, the described actual act time is the one-off time of circuit breaker trip to reclosing;
Judging unit, for utilizing described measurement data, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
7. device as claimed in claim 6, is characterized in that, described judging unit comprises:
The first judging unit, for contrasting the actual act time of measurement data corresponding each interval and deliberate action time; When both time errors are greater than Preset Time threshold value, determine that described switching value output and trip(ping) circuit are abnormal, otherwise determine that switching value is exported and trip(ping) circuit is normal;
The second judging unit, obtains the first voltage sample value at described interval to be detected in an interval to be detected for determining at least one interval, and at least two voltage sample values outside described interval to be detected; Described the first voltage sample value is contrasted with at least two voltage sample values respectively; If described the first voltage sample value is greater than predetermined voltage threshold with the in-phase voltage error of at least two voltage sample values, determines that the voltage acquisition circuit at described interval to be detected is abnormal, otherwise determine that the voltage acquisition circuit at described interval to be detected is normal; Successively the voltage acquisition circuit at each interval is carried out to long-range verification according to the method described above;
The 3rd judging unit, for contrasting the described protection at each interval with three-phase current and described measurement three-phase current; When both in-phase current errors are greater than predetermined current threshold value, determine that current acquisition circuit is abnormal, otherwise determine that current acquisition circuit is normal;
The 4th judging unit, for successively the on-off state at each interval and preset switches amount state being contrasted, determines that the switching value input circuit at this interval is abnormal if both are inconsistent, otherwise determines that the switching value input circuit at this interval is normal.
8. the long-range check system of relay protection, is characterized in that, comprising:
At least one measurement and Control Equipment for Relay Protection, the relay protection monitor server being connected with measurement and Control Equipment for Relay Protection described at least one by station level network, the long-range verification center being connected by electric power data network with described relay protection monitor server;
Described measurement and Control Equipment for Relay Protection, for by voltage sensor, to bus, sampling obtains voltage sample value, utilize current sensor to sample and obtain protection three-phase current and measurement three-phase current bus, gather the on-off state of isolating switch, described isolating switch is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server, described measurement data comprises voltage sample value, protection three-phase current, measures with three-phase current, on-off state and actual act time;
Described relay protection monitor server, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection is uploaded described at least one;
Described long-range verification center, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
9. the long-range check system of relay protection, is characterized in that, comprising:
At least one protective relaying device, at least one measure and control device, the relay protection monitor server being connected with measure and control device with protective relaying device described at least one by station level network, the long-range verification center being connected by electric power data network with described relay protection monitor server;
Described protective relaying device, for utilizing current sensor to sample and obtain protection three-phase current bus, and transfers to described relay protection monitor server by described three-phase current;
Described measure and control device, for by voltage sensor, to bus, sampling obtains voltage sample value, utilize current sensor to sample and obtain measurement three-phase current bus, gather the on-off state of isolating switch, described isolating switch is by the actual act time that trips to reclosing, and measurement data is uploaded to described relay protection monitor server, described measurement data comprises voltage sample value, measures with three-phase current, on-off state and actual act time;
Described relay protection monitor server, for receiving and store the measurement data that measurement and Control Equipment for Relay Protection is uploaded described at least one;
Described long-range verification center, obtain the measurement data at least one interval on bus for detecting server from relay protection, the switching value output to each interval and trip(ping) circuit, voltage acquisition circuit, current acquisition circuit and switching value input circuit carry out long-range verification successively to utilize described measurement data, if three verification passes through to determine that this interval is normal, otherwise determines that this interval is abnormal.
10. system as claimed in claim 9, is characterized in that, also comprises:
One end is connected with described protective relaying device, and the real-time record wave system system that server is connected is detected with described relay protection in one end, and described real-time record wave system system is used for extracting protection three-phase current, and described protection is sent to described relay protection detection server with three-phase current.
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| CN201410350705.6A CN104062531A (en) | 2014-07-22 | 2014-07-22 | Long-distance verification method, device and system for relaying protection |
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| CN201410350705.6A CN104062531A (en) | 2014-07-22 | 2014-07-22 | Long-distance verification method, device and system for relaying protection |
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| CN107634983A (en) * | 2017-08-02 | 2018-01-26 | 贵州电网有限责任公司 | A kind of long-range cloud service system of relay protection |
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| CN112904119A (en) * | 2021-01-21 | 2021-06-04 | 广东电网能源发展有限公司 | Relay protection testing device and method thereof |
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| CN113281603A (en) * | 2021-06-25 | 2021-08-20 | 广东电网有限责任公司 | Detection circuit and method for relay protection terminal |
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