CN107086560A - The method of locking direct current, system and direct current station control cabinet under a kind of isolated island low-power - Google Patents
The method of locking direct current, system and direct current station control cabinet under a kind of isolated island low-power Download PDFInfo
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- CN107086560A CN107086560A CN201710487801.9A CN201710487801A CN107086560A CN 107086560 A CN107086560 A CN 107086560A CN 201710487801 A CN201710487801 A CN 201710487801A CN 107086560 A CN107086560 A CN 107086560A
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- semaphore
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The embodiment of the present invention provides a kind of method of locking direct current under isolated island low-power, system and direct current station control cabinet, it is related to technical field of power systems, solve under isolated island low power run operating mode in the prior art because generating set is reduced, the capacity of short circuit reduction of AC system, easily occurring parallel resonance causes the problem of electricity net safety stable is impacted.This method includes：Obtain bipolar running status amount, bipolar general power and island state semaphore；According to bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power blocking semaphore locking is bipolar or switching direct current station control system.The present invention is applied in the control of isolated island low-power locking direct current.
Description
Technical field
The present invention relates to a kind of method of locking direct current under technical field of power systems, more particularly to isolated island low-power, it is
System and direct current station control cabinet.
Background technology
In extra-high voltage DC transmission system, the converting plant in direct current station is with ac grid system under normal circumstances using connection
Network operation mode, but after the major network interconnection between converting plant and ac grid system is all off, straight-flow system is additionally related to multi-functional passive entry
Decoupled mode, forms the situation that sending end power station drives DC operation.So cause under islet operation situation, power station
In the long-term underrun of water turbine set, cause unit to be constantly in vibrating area operation, cause generator in converting plant and
There is different degrees of defect in factory building.
The problem of in order to solve above, machine can be made typically by number of units of starting shooting is reduced to increase the method for unit output
Group departs from vibrating area, but when sending end power station start quantity is reduced, the capacity of short circuit of corresponding AC system reduces so that
AC system equivalent impedance increase under power frequency and under low-order harmonic, it is easier to and parallel resonance occurs for alternating current filter, to electricity
Guipure carrys out safety and stability risk.
The content of the invention
Embodiments of the invention provide a kind of method of locking direct current under isolated island low-power, system and direct current station control cabinet, solution
Determine in the prior art because generating set is reduced, the capacity of short circuit reduction of AC system, easily occurring parallel resonance causes power network
The problem of safety and stability is impacted.
There is provided a kind of method of locking direct current under isolated island low-power, methods described bag for the first aspect of the embodiment of the present invention
Include：
Obtain bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power locking input letter
Number amount；
According to the bipolar running status amount, the bipolar general power, the island state semaphore and the isolated island
Low-power locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
It is preferred that, it is described according to the bipolar running status amount, the bipolar general power, the island state semaphore with
It is bipolar or switching direct current station is controlled according to judged result locking and isolated island low-power locking input semaphore carries out logic judgment
System, is specifically included：
DC operation semaphore is determined according to the bipolar running status amount；
According to the DC operation semaphore, the bipolar general power, the island state semaphore and the isolated island
Low-power locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
It is further preferred that described believe according to the DC operation semaphore, the bipolar general power, the island state
Number amount and isolated island low-power locking input semaphore carry out logic judgment, bipolar or switching is straight according to judged result locking
Stream station control system, is specifically included：
When the DC operation semaphore, the island state semaphore and the isolated island low-power locking put into signal
Amount is useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, it is low that the duration meets isolated island
After power locking handoff delay, control switches to standby direct current station control system from current direct current station control system；
When the DC operation semaphore, the island state semaphore and the locking of isolated island low-power input semaphore are equal
For useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, the duration meets isolated island low-power
After block action delay, locking is bipolar；
Wherein, the isolated island low-power block action delay is more than the isolated island low-power locking handoff delay.
Optionally, methods described also includes：
When the DC operation semaphore, the island state semaphore and the locking of isolated island low-power input semaphore this
Any one in three semaphores is invalid signals amount, or bipolar general power is more than or equal to isolated island low-power locking power definite value
When, maintain current operating conditions.
Specifically included it is further preferred that the locking is bipolar：
System is controlled to Exchange Station to send after the full order for cutting alternating current filter, preset time period, sends the bipolar order of locking.
The second aspect of the embodiment of the present invention controls cabinet there is provided a kind of direct current station, and the direct current station control cabinet includes：
Acquisition module, for obtaining bipolar running status amount, bipolar general power, island state semaphore and the low work(of isolated island
Rate locking puts into semaphore；
Processing module, for according to the bipolar running status amount, the bipolar general power, the island state semaphore
And isolated island low-power locking input semaphore carries out logic judgment, according to judged result locking is bipolar or switching direct current station
Control system.
It is preferred that, the processing module, specifically for：
DC operation semaphore is determined according to the bipolar running status amount；
According to the DC operation semaphore, the bipolar general power, the island state semaphore and the isolated island
Low-power locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
It is further preferred that the processing module is according to the DC operation semaphore, the bipolar general power, described
Island state semaphore and isolated island low-power locking input semaphore carry out logic judgment, double according to judged result locking
Pole or switching direct current station control system, specifically for：
When the DC operation semaphore, the island state semaphore and the isolated island low-power locking put into signal
Amount is useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, it is low that the duration meets isolated island
After power locking handoff delay, control switches to standby direct current station control system from current direct current station control system；
When the DC operation semaphore, the island state semaphore and isolated island low-power blocking semaphore are equal
For useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, the duration meets isolated island low-power
After block action delay, locking is bipolar；
Wherein, the isolated island low-power block action delay is more than the isolated island low-power locking handoff delay.
Optionally, the processing module is additionally operable to：
When the DC operation semaphore, the island state semaphore and isolated island low-power blocking semaphore this
Any one in three semaphores is invalid signals amount, or bipolar general power is more than or equal to isolated island low-power locking power definite value
When, maintain current operating conditions.
It is further preferred that the processing module is when locking is bipolar, specifically for：
System is controlled to Exchange Station to send after the full order for cutting alternating current filter, preset time period, sends the bipolar order of locking.
There is provided a kind of system of locking direct current under isolated island low-power, the system bag for the third aspect of the embodiment of the present invention
Include：It is straight described in the pole of pole 1 control cabinet, the pole of pole 2 control cabinet, alternating current filter measure and control device, operations staff's work station and second aspect
Stream station control cabinet, wherein：
The pole of the pole 1 control cabinet is controlled cabinet by pole layer control LAN and the direct current station and connected, and the pole of the pole 2 control cabinet passes through pole
Layer control LAN and direct current station control cabinet connection, the direct current station control cabinet control LAN to be filled with alternating current filter observing and controlling by layer of standing
Connection is put, described direct current station control cabinet passes through distributed data acquisition and monitoring system SCADA LAN and operations staff's work
Make station connection.
The method of locking direct current, system and direct current station control cabinet under isolated island low-power provided in an embodiment of the present invention, by obtaining
Take bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power locking input semaphore；Then,
Semaphore is put into according to the bipolar running status amount, bipolar general power, island state semaphore and the locking of isolated island low-power to enter
Row logic judgment, system is controlled according to judged result locking direct current or switching direct current station.So cause in isolated island low power run side
Can quickly stop transport bipolar or switching direct current station control system under formula, so that the unit produced by avoiding isolated island low-power continuous service shakes
The generation of dynamic and system parallel resonance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 be a kind of isolated island low-power provided in an embodiment of the present invention under locking direct current method flow chart；
The logic judgment block diagram that Fig. 2 is provided for the embodiment of the present invention based on Fig. 2；
Fig. 3 is the interface schematic diagram of locking direct current function under isolated island low-power in work station provided in an embodiment of the present invention
Fig. 4 controls the structural representation of cabinet for a kind of direct current station provided in an embodiment of the present invention；
Fig. 5 be a kind of isolated island low-power provided in an embodiment of the present invention under locking direct current system structural representation.
Embodiment
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 carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " make a distinction to function or the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined to quantity and execution order.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, herein
Middle character "/", it is a kind of relation of "or" to typically represent forward-backward correlation object.
The method that the embodiment of the present invention provides locking direct current under a kind of isolated island low-power, as shown in figure 1, this method includes：
101st, bipolar running status amount, bipolar general power, island state semaphore and the locking of isolated island low-power is obtained to throw
Enter semaphore.
Exemplary, above-mentioned bipolar running status amount includes the running status amount of pole 1 and the running status amount of pole 2, wherein：Pole
1 running status amount includes magnitude of voltage, current value and performance number when pole 1 is run etc., and the running status amount of pole 2 is run including pole 2
When magnitude of voltage, current value and performance number etc.；Bipolar general power is that the operation power of pole 1 runs general power sum with pole 2；And be somebody's turn to do
Island state semaphore is used to represent whether current system is under island operation state, and the usual island state semaphore uses 0
Or 1 be indicated, when island state semaphore is 1, represent that current system is in island operation state, when island state signal
Measure for 0 when, represent current system be in networking operation state.However, here 0 and 1 be only illustrated with example, not
For limiting, it can also be represented in actual applications with others mark.
Exemplary, bipolar running status amount is obtained in above-mentioned step 101 can control cabinet and the control of the pole of pole 2 by the pole of pole 1
The running status amount of pole 1, the running status amount of pole 2 are sent to direct current station and controlled in cabinet by cabinet, so as to obtain bipolar running status amount；And it is straight
It is that the island state semaphore is obtained after judgement by other external devices that control cabinet in stream station, which obtains island state semaphore,
It is subsequently transmitted to direct current station control cabinet.
102nd, thrown according to bipolar running status amount, bipolar general power, island state semaphore and the locking of isolated island low-power
Enter semaphore and carry out logic judgment, it is bipolar or system is controlled at switching direct current station according to judged result locking.
Exemplary, above-mentioned step 102 includes content in detail below：
102a, DC operation semaphore determined according to bipolar running status amount.
Wherein, above-mentioned DC operation semaphore is used for the state for representing DC operation.
Exemplary, the DC operation semaphore can be indicated with 0 and 1.When DC operation semaphore is 1,
DC operation in current system is represented, when DC operation semaphore is 0, direct current off-duty in current system is represented.
Exemplary, step 102a can be specifically to obtain DC operation letter by simple judgement after some computings
Number amount.The bipolar running status amount includes the running status amount of pole 1 and the running status amount of pole 2, wherein：The running status amount of pole 1 includes
Magnitude of voltage, current value and performance number when pole 1 is run etc., the running status amount of pole 2 include magnitude of voltage, the electric current when pole 2 is run
Value and performance number etc..If for example, by bipolar running status amount by taking voltage as an example, step 102a detailed process can be：
Magnitude of voltage sum when magnitude of voltage and the operation of pole 2 when pole 1 is run is determined, when the magnitude of voltage sum is less than or equal to predetermined threshold
When, then the DC operation semaphore is 1, is otherwise 0.
102b, according to DC operation semaphore, bipolar general power, island state semaphore and the locking of isolated island low-power throw
Enter semaphore and carry out logic judgment, it is bipolar or system is controlled at switching direct current station according to judged result locking.
Exemplary, above-mentioned step 102b specific deterministic process is referred to the logic diagram shown in Fig. 2, passes through figure
Whether 2 it is known that island state semaphore, have in converting plant isolated island low-power blocking function put into and DC operation letter
Number amount between carry out with computing after, obtain the first result；Bipolar general power and isolated island low-power locking power definite value (are as carried above
To power definite value) compare after size, obtain the second operation result；By second operation result, the first operation result and direct current
Run signal amount obtains the 3rd operation result after progress and computing, according to the operation result locking is bipolar or switching system.
Logic diagram based on Fig. 2, exemplary, above-mentioned step 102b specifically includes herein below：
A1, when DC operation semaphore, island state semaphore and the locking of isolated island low-power input semaphore be to have
Imitate semaphore, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meet operation isolated island low-power
After locking handoff delay, control switches to standby direct current station control system from current direct current station control system.
A2, when DC operation semaphore, island state semaphore and the locking of isolated island low-power input semaphore be to have
Imitate semaphore, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meet operation isolated island low-power
After block action delay, locking is bipolar.
Wherein, isolated island low-power block action delay is more than isolated island low-power locking handoff delay.
Optionally, above-mentioned method also includes：
A3, when DC operation semaphore, island state semaphore and isolated island low-power blocking semaphore these three
In semaphore any one be invalid signals amount, or bipolar general power be more than or equal to isolated island low-power locking power definite value when,
Maintain current operating conditions.
Exemplary, above-mentioned useful signal amount and invalid signals amount can be represented with " 0 " " 1 ", if specifically, effectively believing
Number amount is represented with 1, then for representing DC operation semaphore, island state semaphore and isolated island low-power locking input signal
Amount is effective, i.e., be DC operation in current system, in islet operation pattern, and isolated island low-power blocking function has turned on；
Invalid signals amount is represented with 0, then represents DC operation semaphore, island state semaphore and isolated island low-power locking input letter
Number amount in any one semaphore be invalid, i.e., be not DC operation in current system, or in networking operation pattern, or
Isolated island low-power blocking function is not opened.Opposite, if useful signal amount is represented with 0, invalid signals amount is represented with 1 can also be into
It is vertical.
Certainly, above-mentioned 0 and 1 is only a kind of example, in actual applications, can also be represented using other identify,
Here do not limit, the present embodiment exemplified by 0 and 1 for convenience with illustrating.
Optionally, based on above-mentioned content, in above-mentioned step A2 when locking is bipolar, herein below is specifically included：
B1, control system to Exchange Station and send after the full order for cutting alternating current filter, preset time period, send the bipolar life of locking
Order.
It is exemplary, it is above-mentioned after the bipolar order of locking is sent, the corresponding pole of pole 1 control cabinet and the pole of pole 2 control cabinet emergency outage,
Bipolar locking and jump alternating current inlet wire switch.
Exemplary, above-mentioned preset time period is to be set in advance, but is not changeless, according to need
Can accordingly it adjust, for example：The preset time can be 60ms.
Exemplary, isolated island low-power blocking function referred to above is detected in converting plant, is specifically set
Put is that operations staff sets interface to set isolated island low-power to close by the isolated island low-power locking in operations staff's work station (OWS)
Whether lock function puts into, further, it is also possible to by setting isolated island low-power locking power definite value, isolated island low-power to close on the interface
Lock handoff delay and the delay of isolated island low-power block action.Exemplary, the software interface may be referred to shown in Fig. 3, at this
Equipment has input, exit button, and power definite value (i.e. isolated island low-power locking power definite value), handoff delay on software interface
The setting frame of (i.e. isolated island low-power locking handoff delay) locking delay (delay of isolated island low-power block action).
The method of locking direct current under isolated island low-power provided in an embodiment of the present invention, by obtain bipolar running status amount,
Bipolar general power, island state semaphore and isolated island low-power locking input semaphore；Then, according to the bipolar running status
Amount, bipolar general power, island state semaphore and isolated island low-power locking input semaphore carry out logic judgment, according to judgement
As a result system is controlled at locking direct current or switching direct current station.So cause can quickly be stopped transport under isolated island low power run mode it is bipolar or
Switch direct current station control system, so that the hair of the unit vibration and system parallel resonance produced by avoiding isolated island low-power continuous service
It is raw.
Below by based on the associated description in the embodiment of the method for locking direct current under the corresponding isolated island low-power of Fig. 1 to this
A kind of direct current station control cabinet that inventive embodiments are provided is introduced.The technology art related to above-described embodiment in following examples
The explanation of language, concept etc. is referred to the above embodiments, repeats no more here.
The embodiment of the present invention provides a kind of direct current station control cabinet, as shown in figure 4, direct current station control cabinet 2 includes：Acquisition module 21
And processing module 22, wherein：
Acquisition module 21 is low for obtaining bipolar running status amount, bipolar general power, island state semaphore and isolated island
Power locking puts into semaphore.
Processing module 22, for low according to bipolar running status amount, bipolar general power, island state semaphore and isolated island
Power locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
Optionally, above-mentioned processing module 22, specifically for：
DC operation semaphore is determined according to bipolar running status amount.
Put into and believed according to DC operation semaphore, bipolar general power, island state semaphore and the locking of isolated island low-power
Number amount carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
It is further preferred that above-mentioned processing module 22 is according to DC operation semaphore, bipolar general power, island state
Semaphore and the locking of isolated island low-power input semaphore carry out logic judgment, according to judged result locking it is bipolar or switching direct current
Stand control system, specifically for：
When DC operation semaphore, island state semaphore and the locking of isolated island low-power input semaphore are effective letter
Number amount, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meet operation isolated island low-power locking
After handoff delay, control switches to standby direct current station control system from current direct current station control system.
When DC operation semaphore, island state semaphore and isolated island low-power blocking semaphore are effective letter
Number amount, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meet operation isolated island low-power locking
After action delay, locking is bipolar.
Wherein, isolated island low-power block action delay is more than isolated island low-power locking handoff delay.
Optionally, above-mentioned processing module 22 is additionally operable to：
When DC operation semaphore, island state semaphore and isolated island low-power blocking semaphore these three signals
In amount any one be invalid signals amount, or bipolar general power be more than or equal to isolated island low-power locking power definite value when, maintain
Current operating conditions.
It is exemplary, above-mentioned processing module 22 when locking is bipolar, specifically for：
System is controlled to Exchange Station to send after the full order for cutting alternating current filter, preset time period, sends the bipolar order of locking.
It is exemplary, it is above-mentioned after the bipolar order of locking is sent, the corresponding pole of pole 1 control cabinet and the pole of pole 2 control cabinet emergency outage,
Bipolar locking and jump alternating current inlet wire switch.
Cabinet is controlled at direct current station provided in an embodiment of the present invention, by obtaining bipolar running status amount, bipolar general power, island shape
State semaphore and isolated island low-power locking input semaphore；Then, according to bipolar running status amount, bipolar general power, the orphan
Island state semaphore and isolated island low-power locking input semaphore carry out logic judgment, according to judged result locking direct current or cut
Change direct current station control system.So cause the bipolar or switching direct current station control system that can quickly be stopped transport under isolated island low power run mode
System, so that the generation of the unit vibration and system parallel resonance produced by avoiding isolated island low-power continuous service.
Below by the associated description controlled based on the corresponding direct current stations of Fig. 4 in the embodiment of cabinet to provided in an embodiment of the present invention
The system of locking direct current under a kind of isolated island low-power.The technical term related to above-described embodiment, concept etc. in following examples
Explanation be referred to the above embodiments, repeat no more here.
The system that the embodiment of the present invention provides locking direct current under a kind of isolated island low-power, as shown in figure 5, the system includes：
The pole of pole 1 control cabinet, the pole of pole 2 control cabinet, alternating current filter measure and control device, operations staff's work station and direct current station control described above
Cabinet, wherein：
The pole of pole 1 controls cabinet and controls cabinet connection by pole layer control LAN and the direct current station, and the pole of pole 2 controls cabinet and passes through pole layer control LAN
With direct current station control cabinet connection, direct current station controls cabinet and controls LAN to be connected with alternating current filter measure and control device by layer of standing, direct current station control cabinet
Pass through SCADA (Chinese：Distributed data acquisition and monitoring system) LAN is connected with operations staff's work station.
Above-mentioned direct current station control cabinet is provided with isolated island low-power locking DCL unit, isolated island low-power locking DCL
Unit is getting bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power locking input letter
After number amount, carry out logic and sentence section, it is bipolar or system is controlled at switching direct current station according to judged result locking.
Exemplary, above-mentioned operations staff's work station, throws for providing the locking of isolated island low-power to direct current station control system
Enter the setting value of semaphore, power definite value and handoff delay and locking delay.
It should be noted that controlling the function of realizing of the isolated island low-power locking DCL unit in cabinet for direct current station
Process is specifically referred to control the description in cabinet above for direct current station, repeats no more here.
The system of locking direct current under isolated island low-power provided in an embodiment of the present invention, direct current station control cabinet in systems is provided with
Isolated island low-power locking DCL unit, isolated island low-power locking DCL unit get bipolar running status amount,
After bipolar general power, island state semaphore and isolated island low-power locking input semaphore, carry out logic and sentence section, according to judgement
As a result locking is bipolar or system is controlled at switching direct current station.So cause can quickly be stopped transport under isolated island low power run mode it is bipolar or
Switch direct current station control system, so that the hair of the unit vibration and system parallel resonance produced by avoiding isolated island low-power continuous service
It is raw.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenient and succinct, can as needed will be upper only with the division progress of above-mentioned each functional module for example, in practical application
State function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before may be referred to
The corresponding process in embodiment of the method is stated, be will not be repeated here.
, can be by it in several embodiments provided herein, it should be understood that disclosed direct current station control cabinet
Its mode is realized.For example, embodiments described above is only schematical, for example, the mould in direct current station control cabinet
The division of block or unit, only a kind of division of logic function can have other dividing mode when actually realizing, such as multiple
Unit or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another
Point, shown or discussed coupling or direct-coupling or communication connection each other can be by some interfaces, device or
The INDIRECT COUPLING of unit or communication connection, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious 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 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.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention each
The all or part of step of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(ROM, Read-0nly Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of method of locking direct current under isolated island low-power, it is characterised in that methods described includes：
Obtain bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power locking input semaphore；
According to the bipolar running status amount, the bipolar general power, the island state semaphore and the low work(of the isolated island
Rate locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
2. according to the method described in claim 1, it is characterised in that it is described according to the bipolar running status amount, it is described bipolar
General power, the island state semaphore and isolated island low-power locking input semaphore carry out logic judgment, according to sentencing
Disconnected result locking is bipolar or system is controlled at switching direct current station, specifically includes：
DC operation semaphore is determined according to the bipolar running status amount；
According to the DC operation semaphore, the bipolar general power, the island state semaphore and the low work(of the isolated island
Rate locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
3. method according to claim 2, it is characterised in that it is described according to the DC operation semaphore, it is described bipolar
General power, the island state semaphore and isolated island low-power locking input semaphore carry out logic judgment, according to sentencing
Disconnected result locking is bipolar or system is controlled at switching direct current station, specifically includes：
When the DC operation semaphore, the island state semaphore and the isolated island low-power locking input semaphore are equal
For useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, the duration meets isolated island low-power
After locking handoff delay, control switches to standby direct current station control system from current direct current station control system；
When the DC operation semaphore, the island state semaphore and the locking of isolated island low-power input semaphore are to have
Imitate semaphore, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meets isolated island low-power locking
After action delay, locking is bipolar；
Wherein, the isolated island low-power block action delay is more than the isolated island low-power locking handoff delay.
4. method according to claim 3, it is characterised in that methods described also includes：
When the DC operation semaphore, the island state semaphore and the locking of isolated island low-power input semaphore these three
In semaphore any one be invalid signals amount, or bipolar general power be more than or equal to isolated island low-power locking power definite value when,
Maintain current operating conditions.
5. method according to claim 3, it is characterised in that the locking is bipolar to be specifically included：
System is controlled to Exchange Station to send after the full order for cutting alternating current filter, preset time period, sends the bipolar order of locking.
6. cabinet is controlled at a kind of direct current station, it is characterised in that the direct current station control cabinet includes：
Acquisition module, is closed for obtaining bipolar running status amount, bipolar general power, island state semaphore and isolated island low-power
Lock input semaphore；
Processing module, for according to the bipolar running status amount, the bipolar general power, the island state semaphore and
Isolated island low-power locking input semaphore carries out logic judgment, bipolar or the control of switching direct current station is according to judged result locking
System.
7. cabinet is controlled at direct current station according to claim 6, it is characterised in that the processing module, specifically for：
DC operation semaphore is determined according to the bipolar running status amount；
According to the DC operation semaphore, the bipolar general power, the island state semaphore and the low work(of the isolated island
Rate locking input semaphore carries out logic judgment, bipolar or system is controlled at switching direct current station according to judged result locking.
8. cabinet is controlled at direct current station according to claim 7, it is characterised in that the processing module is according to the DC operation
Semaphore, the bipolar general power, the island state semaphore and isolated island low-power locking input semaphore are carried out
Logic judgment, it is bipolar or system is controlled at switching direct current station according to judged result locking, specifically for：
When the DC operation semaphore, the island state semaphore and the isolated island low-power locking input semaphore are equal
For useful signal amount, and bipolar general power, when being less than isolated island low-power locking power definite value, the duration meets isolated island low-power
After locking handoff delay, control switches to standby direct current station control system from current direct current station control system；
When the DC operation semaphore, the island state semaphore and isolated island low-power blocking semaphore are to have
Imitate semaphore, and bipolar general power be less than isolated island low-power locking power definite value when, the duration meets isolated island low-power locking
After action delay, locking is bipolar；
Wherein, the isolated island low-power block action delay is more than the isolated island low-power locking handoff delay.
9. cabinet is controlled at direct current station according to claim 8, it is characterised in that the processing module is additionally operable to：
When the DC operation semaphore, the island state semaphore and isolated island low-power blocking semaphore these three
In semaphore any one be invalid signals amount, or bipolar general power be more than or equal to isolated island low-power locking power definite value when,
Maintain current operating conditions.
10. cabinet is controlled at direct current station according to claim 8, it is characterised in that the processing module is when locking is bipolar, specifically
For：
System is controlled to Exchange Station to send after the full order for cutting alternating current filter, preset time period, sends the bipolar order of locking.
11. the system of locking direct current under a kind of isolated island low-power, it is characterised in that the system includes：The pole of pole 1 control cabinet, the pole of pole 2
The direct current station control cabinet described in cabinet, alternating current filter measure and control device, operations staff's work station and claim any one of 6-10 is controlled,
Wherein：
The pole of the pole 1 control cabinet is controlled cabinet by pole layer control LAN and the direct current station and connected, and the pole of the pole 2 control cabinet is controlled by pole layer
LAN processed and direct current station control cabinet connection, the direct current station control cabinet control LAN to connect with alternating current filter measure and control device by layer of standing
Connect, described direct current station control cabinet passes through distributed data acquisition and monitoring system SCADA LAN and operations staff's work station
Connection.
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| CN107086560B (en) | 2023-05-16 |
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