CN104617655A

CN104617655A - Method and device for automatically controlling switch unit in electrical power system

Info

Publication number: CN104617655A
Application number: CN201410804312.8A
Authority: CN
Inventors: 衣斌; 李孝众; 张炳华
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2014-12-19
Filing date: 2014-12-19
Publication date: 2015-05-13
Anticipated expiration: 2034-12-19
Also published as: CN104617655B

Abstract

The invention aims to provide a method and a device for automatically controlling switch unit in an electrical power system. The method comprises the following steps: confirming the target connected state corresponding to the electrical power system according to the current running status of each input power supply of the electrical power system, if the current close state of each switch unit in the electrical power system disagrees with the target close state of the switch unit corresponding to the target connected state, adjusting the corresponding switch unit in the electrical power system according to the target close state.

Description

A kind of method and apparatus for automatically controlling electric power system breaker in middle unit

Technical field

The present invention relates to the automatic control technology field of electric power system, particularly relating to a kind of technology for automatically controlling electric power system breaker in middle unit.

Background technology

Along with socioeconomic development, the dependence of all trades and professions to electric power is more and more stronger, more and more higher to the requirement of power supply reliability, meanwhile, electric power system scale constantly expands, system complexity constantly increases, huge challenge is proposed to electric power system infrastructure and operation and maintenance system, particularly in the face of huge garden scale, how to ensure under the prerequisite that safe and continuous is powered, by firm and rational automation control system, improve power-supply system automatic operating degree, reduce maintenance management cost, electric power system construction and operation management personnel problems faced are become.

Current, the Automated condtrol of electric power system is generally realized by " alternate power autocast use " device (usually referred to as " prepared auto restart " device).The core concept of " prepared auto restart " device is a kind of logical thinking of positive direction, also namely according to the standing state of power supply and the switch element such as circuit breaker, bus connection switch, analyze its next step possible state, and establishment adjusts prediction scheme accordingly.Particularly, " prepared auto restart " device detects the running status of input power and the closure state of the switch element such as circuit breaker, bus connection switch and carries out Logic judgment according to these states, when the running status of input power and the closure state of switch element meet predetermined logical relation, " prepared auto restart " device will perform predetermined operation.

The detailed process of above-mentioned " forward " Logic judgment is explained further below in conjunction with accompanying drawing example.

Fig. 1 illustrates the schematic diagram of one 10 kilovolts of (kV) electric power systems.

As shown in Figure 1, this 10kV electric power system comprises two bus section, busbar sections, is labeled as I section and II section respectively, and the supply power voltage required for each bus section, busbar section is 10kV.Wherein, this electric power system also comprises 4 road input powers: 10kV bavin energy source G1 and the 10kV mains supply N1 that directly can connect I section, directly can connect 10kV mains supply N2 and the 10kV bavin energy source G2 of II section.Come access and the disconnection of control inputs power supply by circuit breaker between every road input power and bus section, busbar section.Particularly, circuit breaker 3DL is for the access of control G1 and disconnection, and 1DL is for the access of control N1 and disconnection, and 2DL is for the access of control N2 and disconnection, and 4DL is for the access of control G2 and disconnection.Connected mode between I section, II section two bus section, busbar sections is that single busbar connection has contact to connect.Bus connection switch 5DL is for controlling connection between two bus section, busbar sections and disconnection.When 5DL closes, be communicated with between I section with II section.Wherein, mains supply is set to the power supply of preferential power supply.

Below, for example bright Logic judgment process of the prior art is carried out with a kind of particular power source Run-time scenario of the electric power system shown in Fig. 1.Such as, I section decompression, II section have electricity, and now need automatic brake separating I section civil power service entrance switch and closed bus connection switch between I section and II section, Fig. 2 illustrates the schematic diagram of respective logic relation.

As shown in Figure 2, when meeting I section decompression and have pressure without incoming relay-protection jumping signal, II section and jump signal, prepared auto restart change over switch input, the conjunction of I section inlet wire, mother point position, the conjunction of II section inlet wire without incoming relay-protection, the order of prepared auto restart I section inlet wire separating brake is performed, and triggers next Logic judgment; Next Logic judgment be triggered and meet II section have pressure and without incoming relay-protection jump signal, prepared auto restart change over switch inputs, I section inlet wire CB point of position, mother point position, II section inlet wire close time, trigger latter two Logic judgment, thus realize prepared auto restart bus connection switch combined floodgate.

Can find out, only realize the operation that a simple single channel decompression closes mother, existing Logic judgment process more complicated.And for the electric power system shown in Fig. 1, Fig. 2 is only wherein a kind of Logic judgment, in actual applications, need for the pre-configured multiple Logic judgment of electric power system.

Therefore, existing " prepared auto restart " device Logic judgment mechanism there is following problem:

(1) due to the work of each Logic judgment concurrent process, overall process is numerous and diverse, to power system operation stability and reliability requirement high.

(2) because each Logic judgment process is distributed in different physical location concurrent working, wherein relate to plenty of time delay judgement, accurately need meet the delay time of each operation, avoid starting multiple Logic judgment simultaneously, avoid system to occur power supply collision phenomenon, require high to the accuracy of Logic judgment.

(3) for the conversion between the state that may occur in system, need default various logic relation, those skilled in the art's generally only predetermined fraction main process, is difficult to accomplish satisfied whole running status.Even if adopt exhaustive mode to preset the Logic judgment process of all states, overall process will become unthinkable complexity, and the reliability of system also can reduce.

(4) foundation of Logic judgment seems particularly important, arranges and system logic too strictly can be caused numerous and diverse, and reliability reduces; The grasp difficulty that system logic too loosely can be caused to there is parallel risk is set.

(5) when needs adjustment wherein one go out Logic judgment process and corresponding operating time, be difficult to assessment this adjustment on the impact of other operating procedure.

Summary of the invention

The object of this invention is to provide a kind of scheme for automatically controlling electric power system breaker in middle unit.More specifically, the invention provides a kind of method and apparatus of the closure state for adjusting electric power system breaker in middle unit.

According to an aspect of the present invention, provide a kind of method of the closure state for adjusting electric power system breaker in middle unit, wherein, described electric power system has at least two-way input power;

Wherein, the method comprises:

-according to the current operating conditions of wherein each road input power, determine the corresponding target connected state of described electric power system;

If the target closed state of the current closure state of each switch element in-described electric power system and each switch element corresponding to described target connected state is not inconsistent, adjust the respective switch unit in described electric power system according to described target closed state.

According to another aspect of the present invention, additionally provide a kind of device of the closure state for adjusting electric power system breaker in middle unit, wherein, described electric power system has at least two-way input power;

Wherein, this device comprises:

For the current operating conditions according to wherein each road input power, determine the device of the corresponding target connected state of described electric power system;

If be not inconsistent for the target closed state of each switch element corresponding to the current closure state of each switch element in described electric power system and described target connected state, adjust the device of the respective switch unit in described electric power system according to described target closed state.

Compared with prior art, the present invention is according to the current operating conditions of electric power system Zhong Ge road input power, determine the corresponding target connected state of electric power system, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to target connected state is not inconsistent, according to the respective switch unit in target closed state adjustment electric power system.

Beneficial effect of the present invention mainly contains following 5 aspects:

(1) the present invention is by the current operating conditions of decentralized supervisory control each road input power, and determines the corresponding target connected state of electric power system, avoids the risk of " prepared auto restart " device each Logic judgment concurrent process work.

(2) the target connected state of electric power system is limited, therefore is convenient to determine, thus logical relation is simple, and system reliability is high.

(3) simply clear according to the process of the respective switch unit in the target closed state adjustment electric power system of switch element.

(4) the present invention is with the target connected state of electric power system for guiding, can cover the process changed between the state of the running status of each input power in all electric power systems, improve the stability of electric power system.

(5) logic control corresponding relation is clear and definite, is convenient to adjust flexibly according to application demand, can adapts to various customization requirement better.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

Fig. 1 illustrates the schematic diagram of one 10 kilovolts of electric power systems;

Fig. 2 illustrates the schematic diagram of a kind of Logic judgment based on the electric power system shown in Fig. 1;

Fig. 3 illustrates a kind of according to an embodiment of the invention method flow diagram of the closure state for adjusting electric power system breaker in middle unit;

Fig. 4 illustrates the schematic flow sheet in accordance with a preferred embodiment of the present invention based on the electric power system shown in Fig. 1.

Fig. 5 illustrates a kind of in accordance with another embodiment of the present invention device schematic diagram of the closure state for adjusting electric power system breaker in middle unit.

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

The present invention can be realized by any equipment with center-control ability, concrete as central control equipment.Particularly, central control equipment, according to the current operating conditions of electric power system Zhong Ge road input power, determines the corresponding target connected state of electric power system; Then, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to described target connected state is not inconsistent, central control equipment is according to the respective switch unit in target closed state adjustment electric power system.

For the purpose of simple declaration, the closure state that the present invention only adjusts electric power system breaker in middle unit with central control equipment is illustrated.Those skilled in the art will be understood that other are existing or the equipment with center-control ability that may occur from now on as being applicable to the present invention, within also should being included in scope, and be contained in this at this with way of reference.

For the purpose of simple declaration, the present invention illustrates mainly with electric power system illustrated in fig. 1.Also namely, this electric power system comprises two bus section, busbar sections, and wherein each bus section, busbar section is directly connected with two-way input power, thus this power train altogether four road input powers, and, there is contact to connect by single busbar connection between two bus section, busbar sections.

Those skilled in the art will be understood that; electric power system illustrated in fig. 1 is only citing; and should not be regarded as any limitation of the invention; any other scheme existing or the scheme that may occur from now on are as being applicable to the present invention; also within scope should being included in, and this is contained at this with way of reference.

Fig. 3 illustrates method flow diagram according to an embodiment of the invention, and it specifically illustrates a kind of process of the closure state for adjusting electric power system breaker in middle unit.As shown in Figure 1, in step sl, central control equipment, according to the current operating conditions of electric power system Zhong Ge road input power, determines the corresponding target connected state of electric power system; In step s 2, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to described target connected state is not inconsistent, central control equipment is according to the respective switch unit in target closed state adjustment electric power system.

Particularly, in step sl, central control equipment, according to the current operating conditions of electric power system Zhong Ge road input power, determines the corresponding target connected state of electric power system.

At this, electric power system has at least two-way input power.

Wherein, input power include but not limited to various can to the power supply of power system power supply, such as mains supply, bavin energy source etc.At this, central control equipment can arrange identical priority to all input powers, does not distinguish input power; Or central control equipment also can arrange different priority to different classes of input power, also namely distinguishes different classes of input power, such as, the priority of primary power cource higher than stand-by power supply, wherein, primary power cource is as mains supply, and stand-by power supply is as bavin energy source.

The running status of input power includes but not limited to open and close.At this, every road input power accesses electric power system by a switch element or disconnects with it.Switch element includes but not limited to variously can be used for the connection of control circuit or the control appliance of disconnection, such as circuit breaker, bus connection switch, on-load switch etc.

Wherein, central control equipment can determine the current operating conditions of each road input power in several ways.Such as, central control equipment determines that the mode of the current operating conditions of each road input power includes but not limited to following 2 kinds:

1) central control equipment can change according to each road input power running status the current operating conditions that the state notification message triggered determines electric power system Zhong Ge road input power.

Wherein, state notification message is used to indicate the change of the running status of input power.Such as, state notification message can the running status of only indicative input power supply change, thus central control equipment can determine the running status after its change according to the running status before input power, open as become from closedown or become closedown from unlatching.And for example, state notification message can directly indicative input power supply running status occur change, as become from closedown open or become closedown from unlatching.

When the running status of input power changes, corresponding state notification message can be triggered and be sent to central control equipment; Correspondingly, central control equipment can receive this state notification message, and according to the current operating conditions of this state notification message determination input power.

2) central control equipment detects the current operating conditions of each road input power.

At this, central control equipment can determine the current operating conditions of each road input power by the mode of active detecting.

Wherein, central control equipment intermittently can detect the current operating conditions of each road input power, such as, periodically detected once every 5 seconds, or detect randomly.Preferably, for realizing the high stability of electric power system, central control equipment should detect the current operating conditions of each road input power in real time, and, central control equipment should always not detect the current operating conditions of each road input power with the shorter time interval with not resting yet.

The target connected state of electric power system is used for the target closed state of each switch element in directly or indirectly instruction electric power system.Wherein, the closure state of switch element is as closed and disconnected.

Particularly, target connected state directly can indicate the target closed state of each switch element, and as closed in switch element or switch element disconnects.Such as, coordinate and consult Fig. 1, when the current operating conditions of only civil power N1 is for opening, corresponding target connected state can be " circuit breaker 3DL, 4DL disconnect, and circuit breaker 2DL disconnects, and circuit breaker 1DL is closed, and bus connection switch 5DL is closed ".

Or target connected state also can indicate the target closed state of each switch element indirectly.Such as, target connected state can indicate the input power of concrete power supply.Such as, coordinate and consult Fig. 1, when the current operating conditions of only civil power N1 is for opening, corresponding target connected state can be " being powered by mains supply N1 ".

Target connected state is indicated indirectly to the situation of the target closed state of each switch element, between target connected state and the target closed state of each switch element, there is corresponding relation.Such as, still consult Fig. 1, if target connected state is " being powered by mains supply N1 ", in this electric power system, the corresponding target closed state of each switch element is respectively " circuit breaker 3DL, 4DL disconnect; circuit breaker 2DL disconnects, and circuit breaker 1DL closes, and bus connection switch 5DL closes ".

At this, central control equipment, according to the current operating conditions of electric power system Zhong Ge road input power, calculates in real time and determines the corresponding target connected state of electric power system.

Or central control equipment in advance according to the possible running status of electric power system Zhong Ge road input power, can be determined the corresponding target connected state of electric power system, and preserves determined each corresponding relation.Specific implementation will be described in detail in subsequent content.Accordingly, central control equipment according to the current operating conditions of electric power system Zhong Ge road input power, can inquire about above-mentioned preserved corresponding relation, determines the corresponding target connected state of electric power system.Particularly, the running status of every road input power all for unlatching or can be closed, thus the possible running status of each road input power has multiple combination, and often group combination corresponds to the target connected state of one group of electric power system.Often organize target connected state and comprise one or more target connected state, this depends on the different objects of system.

Such as, shown in the corresponding relation table 1 specific as follows between the possible running status of each road input power and the target connected state of electric power system:

Table 1

As shown in table 1, n represents the quantity of input power in electric power system, and n can be any integer value.Z represents the quantity of the combination of the running status of each input power in electric power system.

Preferably, target connected state can be represented, as state 1, state 2, state 3 etc. by numbering.Therefore, also need to set up comparison list, so that each status number is corresponding with objectives connected state.

A kind of combination for the possible running status of each road input power corresponds to the situation of multiple target connected states of electric power system, wherein any one target connected state can be defined as target connected state by central control equipment, and concrete determination mode can have multiple, as determined according to predetermined set or determine at random.

More specifically, target connected state includes but not limited to following any one:

1) can connected state.

At this, can mean to make whole electric power system obtain the connected state of power supply by connected state.

Particularly, when the running status of each input power is determined, may there are the one or more of corresponding electric power system can connected state.Such as, coordinate and consult Fig. 1, when mains supply N1, N2 close, when bavin energy source G1, G2 open, following 3 kinds can be comprised by connected state: being a) that I section is powered by G1, is that II section is powered by G2; B) be that I section and II section are powered by G1; C) be that I section and II section are powered by G2.Accordingly, central control equipment can by wherein any one can be defined as target connected state by connected state, and concrete determination mode can comprise multiple, as determined according to predetermined set or determine at random.

2) best connectivity state.

At this, best connectivity state means, and under specific criteria, electric power system obtains the connected state of power supply.

Best connectivity state can have multiple standards, such as: a) primary power cource is preferentially powered; B) a road input power is only a bus section, busbar section and powers; C) a road input power is whole power system power supply; D) be that different bus section, busbar sections is powered by different input powers.Such as, still connect example, when mains supply N1, N2 close, when bavin energy source G1, G2 open, based on above-mentioned standard b), best connectivity state now, for being that I section is powered by G1, is that II section is powered by G2.

Those skilled in the art will be understood that what aforementioned multiple standards was not mutually repelled each other, and best connectivity state also can meet multiple standards simultaneously, such as, meet a) and b) two kinds of standards simultaneously.

Such as, coordinate and consult Fig. 1, when when mains supply N1, N2 open, bavin energy source G1 opens, G2 closes, if need meet a) and b) two kinds of standards simultaneously, it is that I section is powered, is that II section is powered by N2 that best connectivity state should be by N1; If need meet a) and d) two kinds of standards simultaneously, it is that I section is powered, is that II section is powered by N2 that best connectivity state should be by G1.

Based on single standard, when uniquely cannot determine best connectivity state, central control equipment can adopt multiple standard to screen, until only remaining one can connected state, and it can be used as unique best connectivity state.

In sum, best connectivity state can be considered to one can connected state, otherwise can differ and be decided to be best connectivity state by connected state, what meet standard can connected state be just best connectivity state.When only exist one can connected state time, this can be considered to best connectivity state by connected state.

Preferably, the input power of electric power system comprises primary power cource and stand-by power supply.

Wherein, primary power cource means, and is preferably the power supply of power system power supply.

Stand-by power supply means, and when primary power cource cannot be power system power supply, is activated the power supply for power system power supply.

Primary power cource and stand-by power supply can carry out different settings depending on different application scene, normally, can using mains supply as primary power cource, bavin energy source is as stand-by power supply.Alternately, also can using bavin energy source as primary power cource, mains supply is as stand-by power supply.

Central control equipment can target connected state corresponding to following i, ii two step determination electric power systems:

If the current operating conditions of at least one road primary power cource is for opening in i electric power system, central control equipment determines the corresponding target connected state of electric power system according to the primary power cource wherein opened.

At this, if the current operating conditions of electric power system Zhong Jin mono-road primary power cource is for opening, central control equipment can determine that this road primary power cource is whole power system power supply, and also, the target connected state of electric power system is " being powered by the primary power cource opened ".

If the current operating conditions of multichannel primary power cource is unlatching in electric power system, central control equipment can determine that all or part of primary power cource in these primary power cources opened is whole power system power supply.This can be understood to, central control equipment can select one as target connected state connected state from multiple.Further, central control equipment also can introduce other standards, as each bus section, busbar section accesses a road input power, the shared road input power of maximum two bus section, busbar sections etc. respectively, can uniquely determine a best connectivity state from multiple connected state.

At this, if the current operating conditions of at least one road primary power cource is for opening in electric power system, central control equipment only can determine the corresponding target connected state of electric power system according to the primary power cource opened in electric power system, central control equipment is without the need to paying close attention to the current operating conditions of stand-by power supply, thus the speed determining target connected state can be improved on the one hand, promote the efficiency of computing; Can promote the stability of electric power system on the other hand, also, the now change of stand-by power supply running status can not affect the target connected state of electric power system.

If the current operating conditions of whole primary power cource is closedown in ii electric power system, central control equipment determines the corresponding target connected state of electric power system according to the current operating conditions of each stand-by power supply.

At this, if the current operating conditions of electric power system Zhong Jin No. mono-stand-by power supply is for opening, central control equipment can determine that this road stand-by power supply is this power system power supply, and also, the target connected state of electric power system is " being powered by the stand-by power supply opened ".

If the current operating conditions of multichannel stand-by power supply is unlatching in electric power system, central control equipment can determine that all or part of stand-by power supply in these stand-by power supplies opened is whole power system power supply.This can be understood to, central control equipment can select one as target connected state connected state from multiple.Further, central control equipment also can introduce other standards, as each bus section, busbar section accesses a road input power, the shared road input power of maximum two bus section, busbar sections etc. respectively, can uniquely determine a best connectivity state from multiple connected state.

More preferably, electric power system can comprise multiple bus section, busbar section, and each bus section, busbar section to there being one group of input power, often can be organized input power and comprise a road primary power cource and at least one road stand-by power supply.Also namely, each bus section, busbar section is directly connected with one group of input power, and this group input power Zhong Mei road input power accesses this bus section, busbar section respectively by a switch element or disconnects with it.For this kind of connected mode, be sometimes referred to as herein " often organizing input power is that a bus section, busbar section is powered ".

When electric power system comprises multiple bus section, busbar section, central control equipment according to above-mentioned i and ii two steps, when there being primary power cource to open, is powered to each bus section, busbar section by the primary power cource opened equally, when opening without primary power cource, by the stand-by power supply opened, each bus section, busbar section is powered.

Central control equipment according to the possible running status of each road input power, can pre-determine the corresponding all target connected states of electric power system.

Wherein, the running status of input power includes but not limited to open and close.

Central control equipment in conjunction with the number of power sources of input power in electric power system, can determine the possible running status of each road input power.

Such as, electric power system comprises a road input power P1, then the possible running status of input power comprises: " P1 unlatching ", " P1 closedown " these two kinds.

For another example, electric power system comprises two-way input power P1 and P2, then the possible running status of input power comprises: " P1 opens, and P2 opens ", " P1 opens, and P2 closes ", " P1 closedown, P2 open ", " P1 closes, and P2 closes " these four kinds.

Those skilled in the art will be understood that situation electric power system being comprised to more multichannel input power, and central control equipment also can determine the possible running status of corresponding each road input power.

At this, central control equipment is according to the possible running status of each road input power, and the mode pre-determining the corresponding all target connected states of electric power system includes but not limited to following 4 kinds:

1) central control equipment is only according to the possible running status of each road input power, pre-determines the corresponding all target connected states of electric power system.

This mode is at least applicable to following power system architectures:

Only comprise a bus section, busbar section in electric power system, one or more input power is powered for this bus section, busbar section, and any road input power is enough supported for this bus section, busbar section and powers.

For the purpose of simple declaration, to power for this bus section, busbar section for two-way input power and be described, central control equipment can the corresponding all target connected states of predetermined electric power system as shown in the following Table 2:

Table 2

2) central control equipment is according to the possible running status of each road input power, in conjunction with the power supply link information between each bus section, busbar section, pre-determines the corresponding all target connected states of electric power system.

This mode is at least applicable to following power system architectures:

Electric power system comprises at least two bus section, busbar sections, and each bus section, busbar section is to there being one or more input power, and any road input power is enough supported for all bus section, busbar sections and powers.

At this, for the purpose of simple declaration, only comprise two bus section, busbar sections for electric power system and be described.

At this, power supply link information includes but not limited to following 2 kinds:

2.1) contact is had to connect by single (many) buses between two bus section, busbar sections;

At this, many buses comprise at least two buses.Connect by single busbar connection or many buses between two bus section, busbar sections, thus can be that the bus section, busbar section that other are connected by bus is with it powered by the input power of a bus section, busbar section.

Have a road input power for each bus section, busbar section further, as I section connects power supply P1, II section connects power supply P2, central control equipment can the corresponding all target connected states of predetermined electric power system as shown in the following Table 3:

Table 3

2.2) nothing contact between two bus section, busbar sections.

At this, between two bus section, busbar sections without the situation of contact, these two bus section, busbar sections independently cause input power are separately powered, thus central control equipment can be respectively each bus section, busbar section determines its corresponding all target connected state.

With nothing contact between two bus section, busbar sections, it is that example is described that one of them bus section, busbar section comprises two-way input power, the confirmable all target connected states of central control equipment are identical with the target connected state shown in table 2, therefore repeat no more, and are contained in this by reference.

Accordingly, central control equipment according to the possible running status of each road input power, in conjunction with the power supply link information between each bus section, busbar section, can pre-determine the corresponding all target connected states of electric power system.

3) central control equipment is according to the possible running status of each road input power, in conjunction with the power supply information on load of each road input power, pre-determines the corresponding all target connected states of electric power system.

Wherein, power supply information on load mean input power can the ability of load bus section, busbar section institute subfam. Spiraeoideae.Power supply information on load is specifically as a road input power can support one or more bus section, busbar sections etc.

This mode is at least applicable to following power system architectures:

Electric power system comprises one or more bus section, busbar section, and each bus section, busbar section one or more input power direct-connected, is undertaken being communicated with or disconnecting by a bus-tie circuit breaker between two bus section, busbar sections, and any road input power is enough that two bus section, busbar sections are powered.

At this, for the purpose of simple declaration, only with 3 bus section, busbar sections (as being respectively I section, II section, III section), each bus section, busbar section has a road input power (as being respectively P1, P2, P3), one road input power can be two bus section, busbar sections and powers as example is described, central control equipment can the corresponding all target connected states of predetermined electric power system as shown in the following Table 4:

Table 4

4) central control equipment is according to the possible running status of each road input power, in conjunction with the power supply information on load of the power supply link information between each bus section, busbar section and each road input power, pre-determines the corresponding all target connected states of electric power system.

At this, the above-mentioned embodiment pre-determining the corresponding all target connected states of electric power system in conjunction with the power supply link information between each bus section, busbar section can pre-determine the corresponding all target connected states of electric power system further embodiment to the above-mentioned power supply information on load in conjunction with each road input power combines.

Therefore, this mode goes for more complicated power system architectures, such as: electric power system comprises at least two bus section, busbar sections, each bus section, busbar section is powered for this bus section, busbar section to there being one or more input power, and any road input power is enough supported for one or more bus section, busbar section and powers.

In sum, central control equipment according to the possible running status of each road input power, can pre-determine the corresponding all target connected states of electric power system.

At this, only indirectly indicate the target closed state of each switch element to illustrate with target connected state above, central control equipment also can determine the target connected state directly indicating the target closed state of each switch element.Such as, central control equipment can present the target connected state of the target closed state of the indirectly each switch element of instruction to user, thus mutual by with user, the target closed state of corresponding each switch element is inputted by user.

In step s 2, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to target connected state is not inconsistent, central control equipment is according to the respective switch unit in target closed state adjustment electric power system.

At this, switch element includes but not limited to circuit breaker, on-load switch, bus connection switch etc.

The closure state of switch element includes but not limited to disconnect and close.

At this, if target connected state directly indicates the target closed state of each switch element, central control equipment then directly can determine the target closed state of each switch element.

If target connected state indicates the target closed state of each switch element indirectly, central control equipment can the corresponding relation of target closed state of query aim connected state and each switch element, thus determines the target closed state of each switch element.

Further, in order to ensure the safety of electric power system, when each switch element is adjusted to its target closed state, first perform wherein to the disconnection of partial switch unit, then perform closing other switch elements.

If the current operating conditions of all input powers is closedown, central control equipment triggers a stand-by power supply enabling signal, to start at least one road stand-by power supply.

At this, stand-by power supply is generally bavin energy source.

At this, if the current operating conditions of all input powers is closedown in electric power system, central control equipment can start a road stand-by power supply, and this stand-by power supply can be also this power system power supply, thus meets the need for electricity of electric power system.

As shown in Figure 1, these 10 kilovolts of (kilovolt is referred to as kV) electric power systems comprise two bus section, busbar sections, and be respectively I section and II section, the supply power voltage required for each bus section, busbar section is 10kV.Wherein, this electric power system also comprises 4 road input powers: 10kV bavin energy source G1,10kV mains supply N1 powered for I section, and 10kV mains supply N2,10kV bavin energy source G2 powered for II section.Circuit breaker is used for the access of control inputs power supply and disconnection, particularly, circuit breaker 3DL for control G1,1DL for control N1,2DL for control N2,4DL for control G2.Have contact to connect by single busbar connection between I section, II section two bus section, busbar sections, bus connection switch 5DL is for controlling whether have contact between two bus section, busbar sections.

Those skilled in the art will be understood that this electric power system comprises 4 road input powers, and therefore, the running status of each road input power that central control equipment is determined is 16 kinds, specific as follows:

1) G1 opens, and N1 opens, and G2 opens, and N2 opens

2) G1 closes, and N1 opens, and G2 opens, and N2 opens

3) G1 opens, and N1 closes, and G2 opens, and N2 opens

4) G1 opens, and N1 closes, and G2 closes, and N2 opens

5) G1 opens, and N1 opens, and G2 opens, and N2 closes

6) G1 closes, and N1 closes, and G2 opens, and N2 opens

7) G1 closes, and N1 opens, and G2 closes, and N2 opens

8) G1 closes, and N1 opens, and G2 opens, and N2 closes

9) G1 opens, and N1 closes, and G2 closes, and N2 opens

10) G1 opens, and N1 closes, and G2 opens, and N2 closes

11) G1 opens, and N1 opens, and G2 closes, and N2 closes

12) G1 closes, and N1 closes, and G2 closes, and N2 opens

13) G1 closes, and N1 closes, and G2 opens, and N2 closes

14) G1 closes, and N1 opens, and G2 closes, and N2 closes

15) G1 opens, and N1 closes, and G2 closes, and N2 closes

16) G1 closes, and N1 closes, and G2 closes, and N2 closes

When civil power is preferential, bavin energy source G1, G2 only just need when two-way mains supply N1, N2 all close to consider, therefore, the running status of each road input power that central control equipment is determined can be reduced to 7 kinds, specific as follows:

1) N1 opens, and N2 opens, and G1 opens or closes, and G2 opens or closes

2) N1 opens, and N2 closes, and G1 opens or closes, and G2 opens or closes

3) N1 closes, and N2 opens, and G1 opens or closes, and G2 opens or closes

4) N1 closes, and N2 closes, and G1 opens, and G2 opens

5) N1 closes, and N2 closes, and G1 opens, and G2 closes

6) N1 closes, and N2 closes, and G1 closes, and G2 opens

7) N1 closes, and N2 closes, and G1 closes, and G2 closes

As shown in Figure 4, the running status of each each road input power above-mentioned, all corresponding to a kind of best connectivity state of electric power system, is respectively state 1, state 2, state 3 ... state 7; Such as, and each best connectivity state is all corresponding to the target closed state of each switch element, according to the order of switch element first being divided to rear conjunction, state 1 corresponds to " point circuit breaker 5DL, point circuit breaker 3DL, 4DL close circuit breaker 1DL, 2DL ".

Accordingly, central control equipment according to the current operating conditions of electric power system Zhong Ge road input power, can determine the corresponding target connected state of electric power system, such as state 1; Then, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to target connected state is not inconsistent, also be, if the current closure state of each switch element in electric power system is not the target closed state " point circuit breaker 5DL; point circuit breaker 3DL, 4DL; close circuit breaker 1DL, 2DL " of each switch element corresponding to state 1, central control equipment adjusts the respective switch unit in electric power system according to " point circuit breaker 5DL; point circuit breaker 3DL, 4DL, closes circuit breaker 1DL, 2DL ".

Fig. 5 illustrates device schematic diagram in accordance with another embodiment of the present invention, and it specifically illustrates a kind of device of the closure state for adjusting electric power system breaker in middle unit, is also control device 10.As shown in Figure 5, control device 10 is installed in central control equipment, and specifically comprises device 11 and 12.

Particularly, device 11, according to the current operating conditions of electric power system Zhong Ge road input power, determines the corresponding target connected state of electric power system (for ease of distinguishing, below device 11 being called connected state determining device 11); If the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to described target connected state is not inconsistent, device 12 is according to the respective switch unit (for ease of distinguishing, below device 12 being called switch element adjusting device 12) in target closed state adjustment electric power system.

Particularly, connected state determining device 11, according to the current operating conditions of electric power system Zhong Ge road input power, determines the corresponding target connected state of electric power system.

At this, electric power system has at least two-way input power.

Wherein, input power include but not limited to various can to the power supply of power system power supply, such as mains supply, bavin energy source etc.At this, all input powers can be set to identical priority, do not distinguish input power; Or different classes of input power also can be set to different priority, also namely distinguish different classes of input power, such as, the priority of primary power cource is higher than stand-by power supply, and wherein, primary power cource is as mains supply, and stand-by power supply is as bavin energy source.

Preferably, control device 10 can also comprise a running status determining device (not shown in Fig. 5), and running status determining device can determine the current operating conditions of each road input power in several ways.Such as, running status determining device determines that the mode of the current operating conditions of each road input power includes but not limited to following 2 kinds:

1) running status determining device can change according to each road input power running status the current operating conditions that the state notification message triggered determines electric power system Zhong Ge road input power.

Wherein, state notification message is used to indicate the change of the running status of input power.Such as, state notification message can the running status of only indicative input power supply change, thus running status determining device can determine the running status after its change according to the running status before input power, open as become from closedown or become closedown from unlatching.And for example, state notification message can directly indicative input power supply running status occur change, as become from closedown open or become closedown from unlatching.

When the running status of input power changes, corresponding state notification message can be triggered and be sent to central control equipment; Correspondingly, central control equipment can receive this state notification message, and by the current operating conditions of running status determining device according to this state notification message determination input power.

2) running status determining device detects the current operating conditions of each road input power.

At this, running status determining device can determine the current operating conditions of each road input power by the mode of active detecting.

Wherein, running status determining device intermittently can detect the current operating conditions of each road input power, such as, periodically detected once every 5 seconds, or detect randomly.Preferably, for realizing the high stability of electric power system, running status determining device should detect the current operating conditions of each road input power in real time, and, running status determining device should always not detect the current operating conditions of each road input power with the shorter time interval with not resting yet.

Preferably, running status determining device can integrate with connected state determining device 11.

At this, connected state determining device 11, according to the current operating conditions of electric power system Zhong Ge road input power, calculates in real time and determines the corresponding target connected state of electric power system.

Or connected state determining device 11 in advance according to the possible running status of electric power system Zhong Ge road input power, can be determined the corresponding target connected state of electric power system, and preserves determined each corresponding relation.Specific implementation will be described in detail in subsequent content.Accordingly, connected state determining device 11 according to the current operating conditions of electric power system Zhong Ge road input power, can inquire about above-mentioned preserved corresponding relation, determines the corresponding target connected state of electric power system.Particularly, the running status of every road input power all for unlatching or can be closed, thus the possible running status of each road input power has multiple combination, and often group combination corresponds to the target connected state of one group of electric power system.Often organize target connected state and comprise one or more target connected state, this depends on the different objects of system.

Such as, the corresponding relation between the possible running status of each road input power and the target connected state of electric power system is concrete as shown in Table 1 above.

A kind of combination for the possible running status of each road input power corresponds to the situation of multiple target connected states of electric power system, wherein any one target connected state can be defined as target connected state by connected state determining device 11, and concrete determination mode can have multiple, as determined according to predetermined set or determine at random.

1) can connected state.

Particularly, when the running status of each input power is determined, may there are the one or more of corresponding electric power system can connected state.Such as, coordinate and consult Fig. 1, when mains supply N1, N2 close, when bavin energy source G1, G2 open, following 3 kinds can be comprised by connected state: being a) that I section is powered by G1, is that II section is powered by G2; B) be that I section and II section are powered by G1; C) be that I section and II section are powered by G2.Accordingly, connected state determining device 11 can by wherein any one can be defined as target connected state by connected state, and concrete determination mode can comprise multiple, as determined according to predetermined set or determine at random.

2) best connectivity state.

Based on single standard, when uniquely cannot determine best connectivity state, connected state determining device 11 can adopt multiple standard to screen, until only remaining one can connected state, and it can be used as unique best connectivity state.

Connected state determining device 11 can target connected state corresponding to following i, ii two step determination electric power systems:

If the current operating conditions of at least one road primary power cource is for opening in i electric power system, connected state determining device 11 determines the corresponding target connected state of electric power system according to the primary power cource wherein opened.

At this, if the current operating conditions of electric power system Zhong Jin mono-road primary power cource is for opening, connected state determining device 11 can determine that this road primary power cource is whole power system power supply, and also, the target connected state of electric power system is " being powered by the primary power cource opened ".

If the current operating conditions of multichannel primary power cource is unlatching in electric power system, connected state determining device 11 can determine that all or part of primary power cource in these primary power cources opened is whole power system power supply.This can be understood to, connected state determining device 11 can select one as target connected state connected state from multiple.Further, connected state determining device 11 also can introduce other standards, as each bus section, busbar section accesses a road input power, the shared road input power of maximum two bus section, busbar sections etc. respectively, can uniquely determine a best connectivity state from multiple connected state.

At this, if the current operating conditions of at least one road primary power cource is for opening in electric power system, connected state determining device 11 only can determine the corresponding target connected state of electric power system according to the primary power cource opened in electric power system, connected state determining device 11 is without the need to paying close attention to the current operating conditions of stand-by power supply, thus the speed determining target connected state can be improved on the one hand, promote the efficiency of computing; Can promote the stability of electric power system on the other hand, also, the now change of stand-by power supply running status can not affect the target connected state of electric power system.

If the current operating conditions of whole primary power cource is closedown in ii electric power system, connected state determining device 11 determines the corresponding target connected state of electric power system according to the current operating conditions of each stand-by power supply.

At this, if the current operating conditions of electric power system Zhong Jin No. mono-stand-by power supply is for opening, connected state determining device 11 can determine that this road stand-by power supply is this power system power supply, and also, the target connected state of electric power system is " being powered by the stand-by power supply opened ".

If the current operating conditions of multichannel stand-by power supply is unlatching in electric power system, connected state determining device 11 can determine that all or part of stand-by power supply in these stand-by power supplies opened is whole power system power supply.This can be understood to, connected state determining device 11 can select one as target connected state connected state from multiple.Further, connected state determining device 11 also can introduce other standards, as each bus section, busbar section accesses a road input power, the shared road input power of maximum two bus section, busbar sections etc. respectively, can uniquely determine a best connectivity state from multiple connected state.

When electric power system comprises multiple bus section, busbar section, connected state determining device 11 is same according to above-mentioned i and ii two steps, when there being primary power cource to open, by the primary power cource opened, each bus section, busbar section is powered, when opening without primary power cource, by the stand-by power supply opened, each bus section, busbar section is powered.

Preferably, control device 10 can also comprise the pre-configured device of a connected state (not shown in Fig. 5), the pre-configured device of connected state according to the possible running status of each road input power, can pre-determine the corresponding all target connected states of electric power system.

The pre-configured device of connected state in conjunction with the number of power sources of input power in electric power system, can determine the possible running status of each road input power.

Those skilled in the art will be understood that situation electric power system being comprised to more multichannel input power, and the pre-configured device of connected state also can determine the possible running status of corresponding each road input power.

At this, the pre-configured device of connected state is according to the possible running status of each road input power, and the mode pre-determining the corresponding all target connected states of electric power system includes but not limited to following 4 kinds:

1) the pre-configured device of connected state is only according to the possible running status of each road input power, pre-determines the corresponding all target connected states of electric power system.

This mode is at least applicable to following power system architectures:

For the purpose of simple declaration, to power for bus section, busbar section for two-way input power and be described, the pre-configured device of connected state can the corresponding all target connected states of predetermined electric power system as shown in Table 2 above.

2) the pre-configured device of connected state is according to the possible running status of each road input power, in conjunction with the power supply link information between each bus section, busbar section, pre-determines the corresponding all target connected states of electric power system.

This mode is at least applicable to following power system architectures:

The pre-configured device of connected state can the corresponding all target connected states of predetermined electric power system as shown in Table 3 above.

2.2) nothing contact between two bus section, busbar sections.

At this, between two bus section, busbar sections without the situation of contact, these two bus section, busbar sections independently cause input power are separately powered, thus the pre-configured device of connected state can be respectively each bus section, busbar section determines its corresponding all target connected state.

With nothing contact between two bus section, busbar sections, it is that example is described that one of them bus section, busbar section comprises two-way input power, the confirmable all target connected states of the pre-configured device of connected state are identical with the target connected state shown in above table 2, therefore repeat no more, and are contained in this by reference.

Accordingly, the pre-configured device of connected state according to the possible running status of each road input power, in conjunction with the power supply link information between each bus section, busbar section, can pre-determine the corresponding all target connected states of electric power system.

3) the pre-configured device of connected state is according to the possible running status of each road input power, in conjunction with the power supply information on load of each road input power, pre-determines the corresponding all target connected states of electric power system.

This mode is at least applicable to following power system architectures:

At this, for the purpose of simple declaration, only with 3 bus section, busbar sections, each bus section, busbar section has a road input power, one road input power can be two bus section, busbar sections and powers as example is described, the pre-configured device of connected state can the corresponding all target connected states of predetermined electric power system as shown in above table 4.

4) the pre-configured device of connected state is according to the possible running status of each road input power, in conjunction with the power supply information on load of the power supply link information between each bus section, busbar section and each road input power, pre-determines the corresponding all target connected states of electric power system.

In sum, the pre-configured device of connected state according to the possible running status of each road input power, can pre-determine the corresponding all target connected states of electric power system.

At this, only indirectly indicate the target closed state of each switch element to illustrate with target connected state above, the pre-configured device of connected state also can determine the target connected state directly indicating the target closed state of each switch element.Such as, the pre-configured device of connected state can present the target connected state of the target closed state of the indirectly each switch element of instruction to user, thus mutual by with user, the target closed state of corresponding each switch element is inputted by user.

At the current operating conditions of connected state determining device 11 according to electric power system Zhong Ge road input power, after determining the corresponding target connected state of electric power system, if the target closed state of the current closure state of each switch element in electric power system and each switch element corresponding to target connected state is not inconsistent, switch element adjusting device 12 is according to the respective switch unit in target closed state adjustment electric power system.

At this, if target connected state directly indicates the target closed state of each switch element, switch element adjusting device 12 directly can determine the target closed state of each switch element.

If target connected state indicates the target closed state of each switch element indirectly, switch element adjusting device 12 can the corresponding relation of target closed state of query aim connected state and each switch element, thus determines the target closed state of each switch element.

Preferably, control device 10 can also comprise a stand-by power supply trigger equipment (not shown in Fig. 5), if the current operating conditions of all input powers is closedown, stand-by power supply trigger equipment triggers a stand-by power supply enabling signal, to start at least one road stand-by power supply.

At this, stand-by power supply is generally bavin energy source.

At this, if the current operating conditions of all input powers is closedown in electric power system, stand-by power supply trigger equipment can start a road stand-by power supply, and this stand-by power supply can be also this power system power supply, thus meets the need for electricity of electric power system.

It should be noted that the present invention can be implemented in the assembly of software and/or software restraint, such as, application-specific integrated circuit (ASIC) (ASIC), general object computer or any other similar hardware device can be adopted to realize.In one embodiment, software program of the present invention can perform to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, such as, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, such as, as coordinating with processor thus performing the circuit of each step or function.

In addition, a part of the present invention can be applied to computer program, such as computer program instructions, when it is performed by computer, by the operation of this computer, can call or provide according to method of the present invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or moveable recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in the working storage of the computer equipment run according to described program command.At this, comprise a device according to one embodiment of present invention, this device comprises the memory for storing computer program instructions and the processor for execution of program instructions, wherein, when this computer program instructions is performed by this processor, trigger this plant running based on the aforementioned method according to multiple embodiment of the present invention and/or technical scheme.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.

Claims

1. for adjusting a method for the closure state of electric power system breaker in middle unit, wherein, described electric power system has at least two-way input power;

Wherein, the method comprises:

2. method according to claim 1, wherein, described target connected state comprises following any one:

-can connected state;

-best connectivity state.

3. method according to claim 1 and 2, wherein, described at least two-way input power comprises at least one road primary power cource and at least one road stand-by power supply;

Wherein, describedly determine that the step of the target connected state corresponding to described electric power system specifically comprises:

If-wherein at least one road primary power cource current operating conditions for open, determine the corresponding target connected state of described electric power system according to the primary power cource wherein opened;

-if wherein all the current operating conditions of primary power cource is closedown, determines the corresponding target connected state of described electric power system according to the current operating conditions of described stand-by power supply.

4. method according to claim 3, wherein, described at least two-way input power comprises organizes input power more, and often organize input power and comprise a road primary power cource and at least one road stand-by power supply, described electric power system comprises multiple bus section, busbar section;

Often organize the corresponding bus section, busbar section of input power, often organize input power Zhong Ge road input power and controlled connect a bus section, busbar section or disconnect with it by a switch element respectively.

5. method according to any one of claim 1 to 4, wherein, the method also comprises:

-determine the current operating conditions of described each road input power.

6. method according to any one of claim 1 to 5, wherein, the method also comprises:

-according to the possible running status of described each road input power, pre-determine the corresponding all target connected states of described electric power system.

7. method according to claim 6, wherein, described electric power system comprises at least two bus section, busbar sections;

Wherein, the described step pre-determining described all target connected states comprises further:

-according to the possible running status of described each road input power, in conjunction with the power supply link information between each bus section, busbar section, pre-determine the corresponding all target connected states of described electric power system.

8. method according to claim 7, wherein, the power supply link information between described each bus section, busbar section comprises following any one:

Contact is had to connect by single (many) buses between-two bus section, busbar sections;

Without contact between-two bus section, busbar sections.

9. the method according to any one of claim 6 to 8, wherein, the described step pre-determining described all target connected states comprises further:

-according to the possible running status of described each road input power, in conjunction with the power supply information on load of described each road input power, pre-determine the corresponding all target connected states of described electric power system.

10. method according to any one of claim 1 to 9, wherein, the method also comprises:

If the current operating conditions of-all input powers is closedown, trigger a stand-by power supply enabling signal, to start at least one road stand-by power supply.

11. 1 kinds for adjusting the device of the closure state of electric power system breaker in middle unit, wherein, described electric power system has at least two-way input power;

Wherein, this device comprises:

12. devices according to claim 11, wherein, described target connected state comprises following any one:

-can connected state;

-best connectivity state.

13. devices according to claim 11 or 12, wherein, described at least two-way input power comprises at least one road primary power cource and at least one road stand-by power supply;

Wherein, described determine the device of the target connected state corresponding to described electric power system specifically for:

14. devices according to claim 13, wherein, described at least two-way input power comprises organizes input power more, and often organize input power and comprise a road primary power cource and at least one road stand-by power supply, described electric power system comprises multiple bus section, busbar section;

15. according to claim 11 to the device according to any one of 14, and wherein, this device also comprises:

For determining the device of the current operating conditions of described each road input power.

16. according to claim 11 to the device according to any one of 15, and wherein, this device also comprises:

For the possible running status according to described each road input power, pre-determine the device of the corresponding all target connected states of described electric power system.

17. devices according to claim 16, wherein, described electric power system comprises at least two bus section, busbar sections;

Wherein, the described device pre-determining described all target connected states is further used for:

18. devices according to claim 17, wherein, the power supply link information between described each bus section, busbar section comprises following any one:

Without contact between-two bus section, busbar sections.

19. according to claim 16 to the device according to any one of 18, and wherein, the described device pre-determining described all target connected states is further used for:

20. according to claim 11 to the device according to any one of 19, and wherein, this device also comprises:

If be closedown for the current operating conditions of all input powers, trigger the device of a stand-by power supply enabling signal, to start at least one road stand-by power supply.