CN109768533A - The method of the more handset synchronization actions of site element protection looped network - Google Patents
The method of the more handset synchronization actions of site element protection looped network Download PDFInfo
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Abstract
The invention discloses a kind of method of the more handset synchronization actions of site element protection looped network, technical problems to be solved are to improve the operation stability of electric system.The present invention is the following steps are included: handset acquires this side sampled value, and formation data message information is sent to other handsets, and handset is synchronous with this side sampled value progress data by other side sampled values in real time, and handset protects synchronization action.The present invention is compared with prior art, it is synchronous using data, handset protection synchronizes, any one handset is rapidly determined to have acted under export situation, other handset logic judgments are adjusted, realize the consistency of all handset action behaviors in looped network, prevent looped network element protection handset under movement critical state from action behavior difference occur, complete each relay protective scheme, simply, safety, reliably, in case of a fault, guarantee the consistency of the more handset protection act behaviors of looped network, improve Operation of Electric Systems stability, it ensure that power system security, reliable operation.
Description
Technical field
The present invention relates to a kind of relay protecting method, especially a kind of site guard method.
Background technique
The site protective device of unshielded, switch yard installation has verified that and enters the trial operation stage, wherein element protection
To solve secondary device device miniaturization, circuit and configuration simplicity, acting rapidity, the requirement that cable directly trips, protection
Device uses distributed more handset (handset) structures, and handset carries out data interaction using looped network.By taking transformer as an example, every height
Machine acquires the analog quantity and intake of secondary side side respectively, while being responsible for the tripping contact output of the side, and each handset passes through looped network
Processing is synchronized to analog quantity and switching value data, i.e., each equal complete independently of handset itself acquisition data and looped network transmit number
According to summarize synchronous, operation independent and logic export differentiates, each handset only controls the tripping that this handset is responsible for and exports.Cause
This, the site element protection of the prior art is made of distributed handset, and each handset is installed on the spot, is passed through between handset
Bicyclic Network Communication, each handset complete this spaced simulation amount, switch acquisition, are communicated by looped network and carry out information exchange, each handset
Defencive function is completed alone.Handset uses the direct wavy trajectory of cable, i.e., returning between protection protective device and switch operating case
Road is directly connected to mode using cable, and site protective device receives circuit breaker position, is originally spaced apart and is passed into information using cable
Defeated, starting, block signal between other devices are transmitted using GOOSE network.The conventional mutual inductance of handset analog quantity sampling
Device cable access way.
Above-mentioned protective device is very high to the data of each handset of looped network and movement synchronism requirement, in case of a fault each
Handset action behavior must be consistent.Each handset of the prior art obtains looped network transmission data and itself acquisition data carries out interpolation
When synchronizing and running, due to sampling instant and the difference at interpolation calculation moment, lead to different handset data transmitting and operation result
There is a certain error for meeting, and when such as failure, failure amount is just at movement critical state, then there may be each handset action behaviors
Inconsistent situation causes all sides of transformer not cut off not exactly the same or same bus adjacent spaces and cuts off infull feelings
Condition affects the operation stability of electric system.
Summary of the invention
The object of the present invention is to provide a kind of methods of the more handset synchronization actions of site element protection looped network, to be solved
Technical problem is to improve the operation stability of electric system.
The invention adopts the following technical scheme: a kind of method of the more handset synchronization actions of site element protection looped network, packet
Include following steps:
One, each handset of protective device acquires this side sampled value: A, B, C three-phase voltage instantaneous value, and three-phase current instantaneous value is opened
Enter amount state, protection act status data；
Two, handset is collected this side instantaneous voltage, current instantaneous value, intake state through analog-to-digital conversion at
Digital quantity, then together with the protection act status data of this handset, form the data message information of the unified format of agreement.
Three, handset in real time sends the data message information of this handset in looped network, is sent to other handsets by looped network；
Meanwhile handset obtains the data message information of other handsets transmission from looped network；
Four, the format that handset respectively arranges the data message information of other handsets according to looped network message obtains other sons
It is specified interior to be saved in this handset for the data of machine sampled voltage instantaneous value, current instantaneous value, on-off state and protection act state
In depositing；
Five, handset is in real time by the data of other side voltage and current instantaneous values, on-off state and protection act state and this
It is synchronous that side voltage and current instantaneous value, on-off state and the data of protection act state carry out data；
Six, handset protects synchronization action
When breaking down, handset outputs control signals to its tripping of this side switch control, after other handsets are according to synchronizing
Voltage and current sampled data and the on-off state data after summarizing judge whether to meet protection starting and protection act condition,
The following steps are included:
(1) if meeting protection starting and protection act condition, the protection act status data after other handsets will summarize is sent out
It send to looped network；
If the protection of other handsets is inactive, into protection co-operating logic step；
(2) for without delay protection, directly reducing this protection act threshold to 80% threshold value；Band delay is protected
Action delay is down to the 80% of former action delay while except this protection act threshold to 80% threshold value is reduced by shield；
(3) after 40ms, other handsets synchronous outlet not yet, other handsets issue the asynchronous alarm signal of protection act.
This side of step one of the invention is transformer secondary side.
Each handset of step one protective device of the invention acquires sampled value by the sample frequency of 0.833ms.
A, B, C three-phase voltage instantaneous value of step one of the invention, three-phase current instantaneous value, intake state, protection are dynamic
Make status data are as follows:
High-pressure side handset acquires on high-tension side A, B, C three-phase voltage instantaneous value of transformer secondary, and three-phase current instantaneous value is high
Press side intake state, each protection act status data in high-pressure side；
A, B, C three-phase voltage instantaneous value of medium voltage side handset acquisition transformer secondary medium voltage side, three-phase current instantaneous value, in
Press side intake state, each protection act status data of medium voltage side；
Low-pressure side handset acquires A, B, C three-phase voltage instantaneous value of transformer secondary low-pressure side, and three-phase current instantaneous value is low
Press side intake state, each protection act status data of low-pressure side.
Step three handset of the invention sends looped network for the data message information of this handset in real time by the frequency of 0.833ms
In.
Step four handset of the invention is respectively by other handset sampled voltage instantaneous values, current instantaneous value, on-off state
It with the data of protection act state, is saved in this handset specified memory, it is instantaneous to form other side voltage and currents of transformer secondary
The data information of value, on-off state and protection act state.
Step five data of the invention are synchronous, and handset is electric by this instantaneous Value Data of side voltage and current and other sides received
Current voltage instantaneous value data buffer storage is calculated each channel sampled data of given time, it is same to be obtained this handset by interpolation synchronous method
Voltage and current sampled data after step.
Step five data of the invention are synchronous, and handset is by on-off state data phase or carries out summarizing merging, form book
Machine summarize after on-off state data.
Step five data of the invention are synchronous, and by other handset protection act status datas, logically "or" carries out handset
Summarize merging, forms the protection act status data after this handset summarizes.
Before step six of the invention enters protection co-operating logic step, positive and negative code check is carried out.
Compared with prior art, the present invention synchronous using data, handset protection is synchronized, and rapidly determines any one height
Machine has acted under export situation, is adjusted to other handset logic judgments, realizes all handset action behaviors in looped network
Consistency prevents looped network element protection handset under movement critical state from action behavior difference occur, completes each relay protective scheme, letter
It is single, safe and reliable, in case of a fault, guarantee the consistency of the more handset protection act behaviors of looped network, improves electric system fortune
Row stability ensure that power system security, reliable operation.
Detailed description of the invention
Fig. 1 is the more handset relaying configuration schematic diagrames of looped network transformer of the invention.
Fig. 2 is flow chart of the method for the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
In the present embodiment, the method (method) of the more handset synchronization actions of site element protection looped network of the invention is used
The more handset protective devices (protective device) of site transformer, as shown in Figure 1, protective device is equipped with high-pressure side handset, medium voltage side
Handset, low-pressure side handset and ontology handset, using the distributed frame for being based on bidirectional redundancy loop network (looped network), each handset is logical
Cross bidirectional redundancy looped network A and bidirectional redundancy looped network B communication network concatenation.
High-pressure side handset is responsible for acquiring the on high-tension side secondary voltage current-mode analog quantity of transformer secondary and switching-state information,
It is responsible for the control of high side switch outlet tripping contact, and obtains its protection act status data information.
Medium voltage side handset is responsible for acquiring the secondary voltage current-mode analog quantity and switching-state information of transformer secondary medium voltage side,
It is responsible for the control of medium voltage side switch outlet tripping contact, and obtains its protection act status data information.
Low-pressure side handset is responsible for acquiring the secondary voltage current-mode analog quantity and switching-state information of transformer secondary low-pressure side,
It is responsible for the control of low-side switch outlet tripping contact, and obtains its protection act status data information.
Each handset is by data message information, by collected secondary voltage electric current, switching-state information and protection act
The data of status information are transferred to other handsets in looped network through looped network, and each handset obtains other sides of transformer secondary by looped network
Secondary voltage electric current, switching-state information and other handset protection act status informations data, it is synchronous to carry out data, handset
Protection synchronizes, and completes each defencive function logic.
Method of the invention, as shown in Figure 2, comprising the following steps:
One, each handset of protective device acquires sampled value by the sample frequency of 0.833ms:
A, B, C three-phase voltage instantaneous value of high-pressure side handset acquisition transformer secondary high-pressure side (high-pressure side): Uha, Uhb,
Uhc, high-pressure side A, B, C three-phase current instantaneous value: Iha, Ihb, Ihc, high-pressure side intake state (switch state, switching value shape
State) KI_H, each protection act status data BHDZ_H in high-pressure side.
KI_H indicates that each BIT represents an intake with 8 bit BIT, and BIT indicate that corresponding open (is closed into conjunction for 1
Lock), 0 indicates to open into disconnected (disconnection).BHDZ_H indicates that each BIT represents a kind of protection with 32 bit BIT, and such as differential quick-break is protected
Shield, biased differential protection, high-pressure side overcurrent protection, medium voltage side overcurrent protection, BIT indicate that the protection has acted for 1, i.e., should
Relay protective scheme differentiates that result is to meet relay protective scheme condition, issues the event of protection act, outputs node closure；0 indicates the guarantor
It protects not operating.
A, B, C three-phase voltage instantaneous value of medium voltage side handset acquisition transformer secondary medium voltage side (medium voltage side): Uma, Umb,
Umc, medium voltage side A, B, C three-phase current instantaneous value: Ima, Imb, Imc, medium voltage side intake state (switch state, switching value shape
State) KI_M, each protection act status data BHDZ_M of medium voltage side.
KI_M indicates that each BIT represents an intake with 8 BIT, and BIT indicate that correspondence is opened into conjunction for 1, and 0 indicates to open
Enter disconnected.BHDZ_M indicates that each BIT represents a protection section with 32 BIT, and BIT indicate protection section movement for 1, and 0 indicates
The protection section is not operating.
A, B, C three-phase voltage instantaneous value of low-pressure side handset acquisition transformer secondary low-pressure side (low-pressure side): Ula, Ulb,
Ulc, low-pressure side A, B, C three-phase current instantaneous value: Ila, Ilb, Ilc, low-pressure side intake state (switch state, switching value shape
State) KI_L, each protection act status data BHDZ_L of low-pressure side.
KI_L indicates with 8 BIT, each BIT represent one open into, BIT indicate that correspondence is opened into conjunction for 1,0 indicate to open into
It is disconnected.BHDZ_L indicates that each BIT represents a protection section with 32 BIT, and BIT indicate protection section movement for 1, and 0 indicates to be somebody's turn to do
Protect section not operating.
Two, handset is collected this side instantaneous voltage, current instantaneous value, intake state are through modulus AD conversion
At digital quantity, then together with the protection act status data of this handset, the data message information of the unified format of agreement is formed.
Three, handset is in real time sent the data message information of this handset in looped network by the frequency of 0.833ms, passes through looped network
It is sent to other handsets.Meanwhile handset obtains the data message information of other handsets transmission from looped network.
Four, the format that handset respectively arranges the data message information of other handsets according to looped network message obtains in message
The data of entrained other handset sampled voltage instantaneous values, current instantaneous value, on-off state and protection act state save
Into this handset specified memory, transformer secondary other side voltage and current instantaneous value, on-off state and protection act shapes are formed
The data information of state.
Five, handset is in real time by the data of other side voltage and current instantaneous values, on-off state and protection act state and this
Side voltage and current instantaneous value, on-off state synchronize (data are synchronous) with the data of protection act state.
Handset is N number of by this instantaneous Value Data of side voltage and current and other side voltage and current instantaneous value data buffer storages for receiving
Sampled point, the present embodiment N take 8.The interpolation synchronous method for then pressing the prior art calculates specified (identical) moment each channel
(sampled point) sampled data, Uha ', Uhb ', Uhc ', Uma ', Umb ', Umc ', Ula ', Ulb ', Ulc ', Iha ', Ihb ', Ihc ',
Ima ', Imb ', Imc ', Ila ', Ilb ', Ilc ' obtain the voltage and current sampled data after this handset synchronizes.
On-off state data directly mutually or are carried out summarizing merging by handset, form the on-off state after this handset summarizes
Data KI_ALL.KI_ALL is indicated using 32 BIT, and KI_L, KI_M and KI_H are respectively written into KI_ALL's by logical "or"
In BIT different, such as: KI_L can be BIT8~15 of KI_ALL, and KI_M can be BIT8~15 of KI_ALL, and KI_H can be with
For BIT16~23 of KI_ALL.
By other handset protection act status datas, directly logically "or" carries out summarizing merging handset, forms this handset
Protection act status data BHDZ_AX, X after summarizing indicate that side is other.BHDZ_AX is indicated with 32 BIT, wherein high-pressure side
The BHDZ_AH of machine is the "or" logical consequence of BHDZ_M and BHDZ_L；The BHDZ_AM of medium voltage side handset is BHDZ_H and BHDZ_L
"or" logical consequence；The BHDZ_AL of low-pressure side handset is the "or" logical consequence of BHDZ_H and BHDZ_M.
Six, handset protects synchronization action
When breaking down, handset outputs control signals to its tripping of this side switch control, some other handset (son
Machine) according to the voltage and current sampled data after synchronizing and the on-off state data after summarizing, judge whether to meet protection starting
With protection act condition.
(1) if meeting protection starting and protection act condition, the protection act status data after which will summarize is sent
To looped network.
Protection starting is into protection act logic discrimination process.
Protection act condition is to implement the setting valve of protection setting, and protective device is according to the voltage and current hits after synchronizing
It carries out whether logic discrimination meets setting valve according to the on-off state data after summarizing, differentiates that result is to meet or be unsatisfactory for protecting
Protect the setting valve of logic setting.
If handset protection has been turned on but not operating, the handset according to the protection act status data received in looped network,
After positive and negative code check, form handset protection act status data BHDZ_AX, when judge in BHDZ_AX some BIT it is non-zero,
The relay protective scheme according to representated by the BIT, sign protection co-operating are 1, into protection co-operating logic step.
Protection co-operating is that the protection of some handset has acted outlet, under the not operating export situation of other handsets, by other
Handset acts criterion and reduces, and so that other handsets is also met operation condition, will not occur each handset action row because of error
For inconsistent situation.
(2) other handsets are when carrying out relay protective scheme differentiation, if the protection has been started up and protects the co-operating mark to be
1, into protection co-operating logic step: for without delay protection, directly reducing this protection act threshold to 80% threshold
Value；Former movement is down to by action delay while except this protection act threshold to 80% threshold value is reduced for band delay protection
The 80% of delay.By lowering the threshold, to reduce delay, guarantee each handset action consistency, while avoiding some other handset
False tripping causes other handsets with jumping situation.
(3) after 40ms, other handsets synchronous outlet not yet, other handsets issue the asynchronous alarm signal of protection act.
By taking fast differential over current protection as an example, illustrate handset fast differential over current protection synchronization action.Assuming that the high, medium and low electricity of transformer
Current transformer CT no-load voltage ratio is consistent.
(1) handset each difference in high, medium and low voltage side flows size are as follows:
Ida=IHa '+IMa '+ILa ' (1)
Idb=IHb '+IMb '+ILb ' (2)
Idc=IHc '+IMc '+ILc ' (3)
Formula (1), (2), in (3), Ida, Idb, Idc are respectively the poor flow valuve of each phase of high, medium and low voltage side handset.
Handset judges whether poor flow valuve meets fast differential over current protection operation condition respectively:
In formula (4), IcdsdFor fast differential over current protection current setting.
(2) assume that some failure occurs, meet high-pressure side handset fast differential over current protection operation condition, at this point, high-pressure side should
Handset directly outputs control signals to its tripping (jumping high side switch in outlet) of this side switch control, and high-pressure side handset is differential
The corresponding BIT of fast tripping protection action state sets 1.If fast differential over current protection movement is first BIT of BHDZ_H, by high pressure
Side first BIT of protection act state code BHDZ_H sets 1, while 32 of BHDZ_H being negated by turn, forms high-pressure side and protects
Action state radix-minus-one complement BHDZ_HF is protected, BHDZ_H and BHDZ_HF are sent in looped network in real time then, it is passed to by looped network
His handset.
Protection act state positive and inverse code is data sender and recipient is to guarantee data accuracy, and sender is by one 32
While position data (code) are transmitted, this 32 data, negated value (radix-minus-one complement) is transmitted through together by turn.Recipient receives
To after code and radix-minus-one complement, by radix-minus-one complement data, negated value and code compare confirmation by turn, and all BIT of values are complete
Unanimously.
(3) under above-mentioned fault condition, if medium voltage side handset fast differential over current protection has acted, medium voltage side handset directly will in
First BIT (corresponding fast differential over current protection) of the protection act Status Flag BHDZ_AM of side handset is pressed to set 1.
Under above-mentioned fault condition, if medium voltage side handset fast differential over current protection is not operating, medium voltage side handset is obtained from looped network
After getting high-pressure side protection act state positive and inverse code BHDZ_H and BHDZ_HF, verified, after BHDZ_HF is negated by turn with
BHDZ_H compare it is whether completely the same, it is consistent to indicate that verification is correct；Inconsistent expression verification failure, all BIT of BHDZ_HF are clear
Except (clearing).
After verification is correct, by BHDZ_H and BHDZ_L, (medium voltage side handset fast differential over current protection is not operating, 0) to summarize, marks
Remember first BIT fast differential over current protection co-operating of protection co-operating the mark BHDZ_AM, BHDZ_AM of medium voltage side handset
State sets 1.
Medium voltage side handset carries out fast differential over current protection logic judgment, if fast differential over current protection has been turned on, that is, it is dynamic to enter protection
Make logic discrimination process, then directly by differential quick-break current setting IcdsdBe reduced to its 80%, the differential quick-break of medium voltage side handset
The adjustment of protection act condition are as follows:
If meeting formula (5), the movement of medium voltage side handset fast differential over current protection directly outputs control signals to this side switch control
It trips and (jumps medium voltage side switch in outlet).
Formula (5) are unsatisfactory for, after continuing 40ms, generate the asynchronous alarm signal of protection act.
(4) for the fast differential over current protection without delay, if fast differential over current protection has been started up, protection act threshold is reduced
Definite value to its 80%.By lowering the threshold, it is ensured that each handset synchronization action outlet avoids each handset outlet trip time interval
It is too long.
For the fast differential over current protection with delay, if fast differential over current protection has been started up, while protection act threshold is reduced
Determine to 80% sill definite value, shortens action delay to the 80% of delayed setting value.
Be illustrated by taking high-pressure side → medium voltage side fast differential over current protection as an example above, similarly, high-pressure side → low-pressure side, in
Press side → high-pressure side, medium voltage side → low-pressure side, low-pressure side → medium voltage side, low-pressure side → medium voltage side fast differential over current protection method phase
Together.
In addition to fast differential over current protection, other protection type guard methods are also identical.
In the present embodiment, the more handset protective devices of site transformer are using CYG Sunrui Co., Ltd.
Zynq7000 type protection equipment for transformer, sample frequency 1200Hz, CPU are protected using Cortex-A9 processor with PRS-778
Software V1.00 is protected to realize.
Method of the invention is filled using more handset element protections of the distributed frame based on bidirectional redundancy loop network
It sets, each handset is each responsible for the secondary voltage electric current, switching-state information and protection act status number of side or a part of branch
According to acquisition, collected data are transferred to by other handsets in network by looped network, each handset in looped network by obtaining
The data of other handsets carry out data and synchronize, and handset protection synchronizes, and have acted out rapidly determining any one handset
In the case where mouthful, other handsets are notified by looped network, other handset logic judgments are adjusted, realizes all handsets in looped network
The consistency of action behavior completes each relay protective scheme.It is different to efficiently solve the more handset neutron machine action behaviors of site looped network
It causes or actuation time differs greatly problem, improve the concertedness of the more handsets protections of element.
It does not need to be modified the more handset original AC samplings of looped network and input and output analog quantity wiring, does not need to increase
The cpu resource of too many calculation amount, consumption is less, in case of a fault, guarantees the consistency of the more handset protection act behaviors of looped network,
Operation of Electric Systems stability is improved, ensure that power system security, reliable operation.
Claims (10)
1. a kind of method of the more handset synchronization actions of site element protection looped network, comprising the following steps:
One, each handset of protective device acquires this side sampled value: A, B, C three-phase voltage instantaneous value, three-phase current instantaneous value, intake
State, protection act status data；
Two, handset is collected this side instantaneous voltage, current instantaneous value, intake state are through analog-to-digital conversion at number
Amount, then together with the protection act status data of this handset, form the data message information of the unified format of agreement.
Three, handset in real time sends the data message information of this handset in looped network, is sent to other handsets by looped network；Together
When, handset obtains the data message information of other handsets transmission from looped network；
Four, the format that handset respectively arranges the data message information of other handsets according to looped network message obtains other handsets and adopts
The data of sample instantaneous voltage, current instantaneous value, on-off state and protection act state are saved in this handset specified memory
In；
Five, handset is in real time by other side voltage and current instantaneous values, the data of on-off state and protection act state and this side electricity
It is synchronous that current voltage instantaneous value, on-off state and the data of protection act state carry out data；
Six, handset protects synchronization action
When breaking down, handset outputs control signals to its tripping of this side switch control, other handsets are according to the voltage after synchronizing
Current sampling data and the on-off state data after summarizing judge whether to meet protection starting and protection act condition, including
Following steps:
(1) if meeting protection starting with protection act condition, the protection act status data after other handsets will summarize is sent to
Looped network；
If the protection of other handsets is inactive, into protection co-operating logic step；
(2) for without delay protection, directly reducing this protection act threshold to 80% threshold value；For band delay protection, remove
While reducing this protection act threshold to 80% threshold value, action delay is down to the 80% of former action delay；
(3) after 40ms, other handsets synchronous outlet not yet, other handsets issue the asynchronous alarm signal of protection act.
2. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
Stating this side of step 1 is transformer secondary side.
3. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
It states each handset of step 1 protective device and acquires sampled value by the sample frequency of 0.833ms.
4. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
State A, B, C three-phase voltage instantaneous value of step 1, three-phase current instantaneous value, intake state, protection act status data are as follows:
High-pressure side handset acquires on high-tension side A, B, C three-phase voltage instantaneous value of transformer secondary, three-phase current instantaneous value, high-pressure side
Intake state, each protection act status data in high-pressure side；
Medium voltage side handset acquires A, B, C three-phase voltage instantaneous value of transformer secondary medium voltage side, three-phase current instantaneous value, medium voltage side
Intake state, each protection act status data of medium voltage side；
Low-pressure side handset acquires A, B, C three-phase voltage instantaneous value of transformer secondary low-pressure side, three-phase current instantaneous value, low-pressure side
Intake state, each protection act status data of low-pressure side.
5. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
Step 3 handset is stated in real time to send the data message information of this handset in looped network by the frequency of 0.833ms.
6. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
Step 4 handset is stated respectively for other handset sampled voltage instantaneous value, current instantaneous value, on-off state and protection act states
Data, be saved in this handset specified memory, formed other side voltage and current instantaneous values of transformer secondary, on-off state and
The data information of protection act state.
7. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
It is synchronous to state step 5 data, handset is by this instantaneous Value Data of side voltage and current and other side voltage and current instantaneous value numbers for receiving
The each channel sampled data of given time is calculated, the voltage and current after this handset synchronizes is obtained by interpolation synchronous method according to caching
Sampled data.
8. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
It is synchronous to state step 5 data, handset is by on-off state data phase or carries out summarizing merging, forms the switch after this handset summarizes
Measure status data.
9. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that: institute
It is synchronous to state step 5 data, logically "or" carries out summarizing merging handset by other handset protection act status datas, is formed
This handset summarize after protection act status data.
10. the method for the more handset synchronization actions of site element protection looped network according to claim 1, it is characterised in that:
Before the step 6 enters protection co-operating logic step, positive and negative code check is carried out.
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| CN111431690A (en) * | 2020-04-03 | 2020-07-17 | 南京南瑞继保电气有限公司 | Sub-machine sampling synchronization method based on in-situ looped network |
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| CN111431690A (en) * | 2020-04-03 | 2020-07-17 | 南京南瑞继保电气有限公司 | Sub-machine sampling synchronization method based on in-situ looped network |
| CN111431690B (en) * | 2020-04-03 | 2023-03-28 | 南京南瑞继保电气有限公司 | Sub-machine sampling synchronization method based on in-situ looped network |
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| CN109768533B (en) | 2019-12-24 |
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