CN106532952A - Multi-agent-based protection control system and method of power distribution network including distributed power supply - Google Patents

Abstract

The invention provides a multi-agent-based protection control system and method of a power distribution network including a distributed power supply. The system comprises a base layer and a decision-making layer, wherein the base layer comprises one agent arranged on each circuit breaker in the power distribution network, collects a fault current signal, an on-off state of the corresponding circuit breaker and position information of the corresponding agent to obtain the polarity of a transient high-frequency component of the fault current signal; and the decision-making layer is a centralized information processor of a medium-low voltage substation arranged in the power distribution network, determines the agent with a common-transmission line adjacent relationship and the agent with a common-bus adjacent relationship according to the position information of various agents and determines a fault section according to the position relationship among the agents and polarity output. When a grid structure of the power distribution network including the distributed power supply changes, self-adaption can be achieved, protection does not need to be set again, and the influence of connection of the distributed power supply on protection of the power distribution network can be relatively well improved.

Description

Based on multiple agent Protection control system containing distributed power distribution network and method

Technical field

The invention belongs to contain distributed power distribution network technical field of relay protection, and in particular to containing based on multiple agent Distributed power distribution network Protection control system and method.

Background technology

Nowadays, with the lasting aggravation and the aggravation of environmental pollution of energy crisis, with wind energy and solar energy as main energy The distributed generation technology in amount source has obtained quick development and has been widely applied, while also making increasing distributed electrical Power distribution network has been accessed nearby in source.Protection control problem after distributed power source access distribution system is increasingly becoming what power distribution network faced One of significant challenge.Research both at home and abroad points out that, due to the flexibility of distributed power source itself, the difference of its access point will change The trend distribution of conventional electrical distribution net, particularly in failure conditions, the change of fault current size and Orientation can be to relying on electric current The traditional three-stage protection adjusted is impacted, and selective and sensitivity declines.At the same time, due to distributed power source itself The diversity of uncertain and operational mode and the control strategy of particularity, such as access capacity, causes the big of its fault current The little and time is different from conventional power source, and this determination equally to the protection scheme of traditional protection increased difficulty.

Power distribution network for being distributed formula plant-grid connection, in protection control aspect, also expands a series of grinding both at home and abroad Study carefully work.Present major way is still correspondingly improved to first wife's electrical network three-stage protection.With cut-out distribution after failure The power supply of formula power supply is Main Means, consequently, it is possible to greatly reduce the utilization rate of distributed power source, is run counter to a certain extent The original intention of development distributed power source.

The content of the invention

For the deficiencies in the prior art, the present invention proposes to control based on multiple agent protection containing distributed power distribution network System and method.

Technical solution of the present invention is as follows：

It is a kind of based on multiple agent Protection control system containing distributed power distribution network, including basal layer and decision-making level；

The basal layer, including the intelligence at each breaker being configured in the power distribution network network containing distributed power source Body；

The basal layer, for the fault-current signal at each mount point of the collection containing distributed power distribution network, correspondence The positional information of the on off state of breaker and corresponding intelligent body, at the fault-current signal at each mount point Reason obtains the polarity of the transient high-frequency component of the surveyed fault-current signal at each mount point, by the temporary of surveyed fault-current signal The positional information of the polarity and its correspondence intelligent body of state high fdrequency component is uploaded to decision-making level, and is obtaining the shut-off correspondence of decision-making level During the command signal of breaker, trip command is sent, turn off corresponding breaker；

Each intelligent body of the basal layer includes：Signal detection module, signal conversion module, intelligent body and branch road position Put detection module, signal polarity computing module and Fault Isolation module；

The signal detection module, for detecting the switch shape of fault-current signal and correspondence breaker at its mount point State；

The intelligent body and bypass position detection module, for detecting the positional information of intelligent body, are sent to decision-making level；

The signal conversion module, carries out phase-model transformation and wavelet transformation for the fault-current signal to detecting, obtains To the transient high-frequency component of surveyed fault-current signal；

The signal polarity computing module, is surveyed for being calculated according to the transient high-frequency component of surveyed fault-current signal The polarity of the transient high-frequency component of fault-current signal, show that its polarity is exported, is sent to decision-making level；

The Fault Isolation module, for when the command signal of shut-off correspondence breaker of decision-making level is obtained, sending and jumping Lock is instructed, and turns off corresponding breaker；

The decision-making level, the information of the mesolow transformer station to be configured in the power distribution network network containing distributed power source concentrate Processor；

The decision-making level, for receiving the transient high-frequency component of the surveyed fault-current signal of each intelligent body transmission of basal layer Polarity and its correspondence intelligent body positional information, the presence altogether adjacent pass of power transmission line is determined according to the positional information of each intelligent body The intelligent body of system and the intelligent body that there are common bus neighbouring relations, export according to each intelligent body position relationship and its polarity, it is determined that There is section in failure, and send the instruction letter of shut-off correspondence breaker according to breakdown judge result to the corresponding intelligent body of basal layer Number；

The information of the decision-making level focuses on device mainly to be included：Intelligent body position relationship judge module and breakdown judge mould Block；

The intelligent body position relationship judge module, for determining intelligent body relation square according to the positional information of each intelligent body Battle array R, and the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations is determined, and send out respectively Deliver to breakdown judge module；

The breakdown judge module, carries out logic for the polarity output to there is the intelligent body of power transmission line neighbouring relations altogether Calculate, judge on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to whether there is failure, it is adjacent to there is common bus Whether the polarity output of the intelligent body of relation carries out logical calculated, judge on the bus between the intelligent body of common bus neighbouring relations Break down, and send the command signal of shut-off correspondence breaker according to breakdown judge result to the corresponding intelligent body of basal layer；

The information of each intelligent body of the basal layer and decision-making level is focused on.

The transient state that the transient high-frequency component according to surveyed fault-current signal calculates surveyed fault-current signal is high The polarity of frequency component, show that the detailed process of its polarity output is as follows：

Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time value t；

Calculate the polarity number k of the transient high-frequency component of surveyed fault-current signal, the i.e. transient high frequency of fault-current signal First peak value i of component i_max1The ratio of corresponding time value t；

The transient state of surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of high fdrequency component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is for just, polarity is output as 1, as k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

The positional information according to each intelligent body determines intelligent body relational matrix R, and determines presence power transmission line phase altogether The detailed process of the intelligent body of adjacent relation and the intelligent body that there are common bus neighbouring relations is as follows：

Network containing distributed power distribution network is converted into by switch-branch road Matrix C according to the positional information of each intelligent body；

Determined according to switch-branch road Matrix C and embody the intelligence containing neighbouring relations between each intelligent body in distributed power distribution network Can body relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C；

Intelligent body relational matrix R is split along two searching routes, power transmission line is adjacent altogether to determine all presence The intelligent body of relation and all intelligent bodies that there are common bus neighbouring relations.

Network containing distributed power distribution network is converted into switch-branch road square by the positional information according to each intelligent body The detailed process of battle array C is as follows：

Using each the intelligent body place breaker containing distributed power distribution network as the node in network topology, two nodes Between all power transmission line circuits as branch road, the branch road of formula plant-grid connection will be distributed equally as topological structure branch road, according to According to node and the relation of branch road, switch-branch road Matrix C is formed：

Wherein, c_ijFor the annexation of No. i-th intelligent body and j-th strip branch road, and 1≤i≤m | i ∈ Z }, m is intelligence in network The number of energy body, and 1≤j≤n | j ∈ Z }, n is the bar number of branch road in network, is directly connected when intelligent body is present with power transmission line branch road Meet relation, and intelligent body c at the right of power transmission line branch road_ij=1, it is directly connected to close when intelligent body and power transmission line branch road are present System, and intelligent body c at the left side of power transmission line branch road_ij=-1, when between intelligent body and power transmission line branch road without direct connection relational Or c when being connected with power transmission line branch road by bus_ij=0；

It is described intelligent body relational matrix R to be split along two searching routes, determine all presence power transmission line altogether The detailed process of the intelligent body of neighbouring relations and all intelligent bodies that there are common bus neighbouring relations is as follows：

It is determined that there is the intelligent body of power transmission line neighbouring relations altogether：Intelligent body relation embodying neighbouring relations between each intelligent body Matrix R is according to row vector r_i=[r_i1..., r_ij′..., r_im] scan for, if r_ij′When ≠ 0, then No. i-th intelligent body and jth ' number There are power transmission line branch road neighbouring relations altogether between intelligent body, if r_ij′When=0, then between No. i-th intelligent body and jth ' intelligent body There are no common power transmission line branch road neighbouring relations, determine all intelligent bodies that there are power transmission line neighbouring relations altogether, wherein, r_iFor intelligence The row vector of the i-th row element composition, r in energy body relational matrix R_ij′For the pass between No. i-th intelligent body and jth ' intelligent body System, and 1≤i, j '≤m | i, j ' ∈ Z }, m is the number of intelligent body in network；

It is determined that there is the intelligent body of common bus neighbouring relations：Intelligent body relation square embodying neighbouring relations between each intelligent body Battle array R is scanned for by its leading diagonal, from intelligent body relational matrix R top left hand element r₁₁Start, calculate r successively_ii×r_ii+1If, r_ii×r_ii+1=0 starts to add up, until r_ii×r_ii+1Stop when ≠ 0, by accumulative p_j″Individual r_iiElement is leading diagonal, structure Into a p_j″×p_j″Unit matrixSequentially find all unit squares with the common leading diagonals of intelligent body relational matrix R Battle array, the intelligent body in same unit matrix is the intelligent body that there are common bus neighbouring relations, determines all there is common bus The intelligent body of neighbouring relations, wherein, 1≤i≤m | and i ∈ Z }, { 2≤p_j″＜ m, | p_j″∈ Z }, 1≤j "≤q | j " ∈ Z } and p₁ +…+p_j″-1+p_j″+p_j″+1+…+p_q=m, q are unit matrix number in intelligent body relational matrix R.

The described pair of polarity output that there is the intelligent body of power transmission line neighbouring relations altogether carries out logical calculated, judges power transmission line altogether Whether there is failure, the polarity to the intelligent body that there are common bus neighbouring relations on power transmission line between the intelligent body of neighbouring relations Output carries out logical calculated, judges the detailed process whether broken down on the bus between the intelligent body of common bus neighbouring relations It is as follows：

The determination methods for having fault-free to occur are carried out to there is the power transmission line altogether between the intelligent body of power transmission line neighbouring relations It is as follows：

Same or logic is carried out with the polarity output of j ' intelligent bodies to there is No. i-th intelligent body of power transmission line neighbouring relations altogether Computing, obtains intelligent body Polarity comparision value k_{I, j '}：

Wherein, k_iPolarity for No. i-th intelligent body is exported, k_j′Polarity for jth ' intelligent body is exported；

If k_{I, j '}For 1, then there is failure on the power transmission line between No. i-th intelligent body and j ' intelligent bodies, if k_{I, j '}For 0, then Do not break down or external area error on power transmission line between No. i-th intelligent body and j ' intelligent bodies；

There are the determination methods that fault-free occurs as follows on bus to the intelligent body that there are common bus neighbouring relations：

Polarity output first to the intelligent body that there are common bus neighbouring relations carries out same or logical operation two-by-two, then to same Or after logical operation, the result of calculation of gained is carried out and logical operation, obtains each intelligent body polarity Integrated comparative on xth bus Value k_{Bus_x}：

Wherein, 1≤x≤n ' | and x ∈ Z }, m ' is the intelligent body number being joined directly together with x buses, and n ' is containing distributed electrical The bus number of source power distribution network, and 1≤i ＜ m | i ∈ Z }, m is the number of intelligent body in network；

If k_{Bus_x}=1, then break down on x buses, if k_{Bus_x}=0, then do not break down or area on x buses Outer failure.

Using based on multiple agent containing distributed power distribution network Protection control system containing distributed power distribution network Protection control method, comprises the following steps：

S1：By the fault current letter at each each mount point of the intelligent body collection containing distributed power distribution network of basal layer Number, correspondence breaker on off state and corresponding intelligent body positional information；

S2：Phase-model transformation and wavelet transformation are carried out to the fault-current signal for detecting by each intelligent body of basal layer, Obtain the transient high-frequency component of surveyed fault-current signal；

S3：Surveyed event is calculated according to the transient high-frequency component of surveyed fault-current signal by each intelligent body of basal layer The polarity of the transient high-frequency component of barrier current signal, show that its polarity is exported；

S31：Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time Value t；

S32：Calculate the polarity number k of the transient high-frequency component of surveyed fault-current signal, the i.e. transient state of fault-current signal First peak value i of high fdrequency component i_max1The ratio of corresponding time value t；

S33：Surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of transient high-frequency component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is for just, polarity is defeated Go out for 1, as k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

S4：The positional information of correspondence intelligent body and polarity output are sent to by decision-making level by each intelligent body of basal layer；

S5：Device is focused on by the information of decision-making level intelligent body relational matrix is determined according to the positional information of each intelligent body R, and determine the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations；

S51：Network containing distributed power distribution network is converted into by switch-branch road square according to the positional information of each intelligent body Battle array C；

S52：Determined according to switch-branch road Matrix C and embodied containing neighbouring relations between each intelligent body in distributed power distribution network Intelligent body relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C；

S53：Intelligent body relational matrix R is split along two searching routes, determine all presence power transmission line altogether The intelligent body of neighbouring relations and all intelligent bodies that there are common bus neighbouring relations.

S6：Polarity output of the device to there is the intelligent body of power transmission line neighbouring relations altogether is focused on by the information of decision-making level Logical calculated is carried out, judges whether break down on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to existing altogether The polarity output of the intelligent body of bus neighbouring relations carries out logical calculated, judges the mother between the intelligent body of common bus neighbouring relations Whether break down on line, and send the finger of shut-off correspondence breaker according to breakdown judge result to the corresponding intelligent body of basal layer Make signal；

S61：Polarity output to there is altogether No. i-th intelligent body of power transmission line neighbouring relations and j ' intelligent bodies carry out with or Logical operation, obtains intelligent body Polarity comparision value k_{I, j '}：

Wherein, k_iPolarity for No. i-th intelligent body is exported, k_j′Polarity for jth ' intelligent body is exported；

S62：If k_{I, j '}For 1, then there is failure on the power transmission line between No. i-th intelligent body and j ' intelligent bodies, if k_{I, j '}For 0, then do not break down or external area error on the power transmission line between No. i-th intelligent body and j ' intelligent bodies；

S63：Polarity output first to the intelligent body that there are common bus neighbouring relations carries out same or logical operation two-by-two, then The result of calculation of gained after same or logical operation is carried out and logical operation, each intelligent body polarity synthesis on xth bus is obtained Fiducial value k_{Bus_x}：

Wherein, 1≤x≤n ' | and x ∈ Z }, m ' is the intelligent body number being joined directly together with x buses, and n ' is containing distributed electrical The bus number of source power distribution network, and 1≤i ＜ m | i ∈ Z }, m is the number of intelligent body in network；

S64：If k_{Bus_x}=1, then break down on x buses, if k_{Bus_x}=0, then do not break down on x buses or Person's external area error；

S65：The command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer.

S7：By each intelligent body of basal layer when the command signal of shut-off correspondence breaker of decision-making level is obtained, send Trip command is to correspondence breaker so as to turn off.

Beneficial effects of the present invention：

The present invention proposes that based on multiple agent Protection control system containing distributed power distribution network and method the present invention exists Once complete, with postponing, when grid structure containing distributed power distribution network changes, can realize self adaptation, without the need for protecting Shield is adjusted again；Change, the change of switching time, the change of input position for the capacity of distributed power source has certainly Adaptability；The impact brought to distribution protection because of the access of distributed power source can preferably be improved.

Description of the drawings

Fig. 1 be the specific embodiment of the invention in based on multiple agent Protection control system containing distributed power distribution network Structured flowchart；

Fig. 2 is the multiterminal supply network schematic diagram of many distributed power sources accesses in the specific embodiment of the invention；

Fig. 3 is the intelligent body graph of a relation of common power transmission line neighbouring relations in the specific embodiment of the invention；

Fig. 4 is the intelligent body graph of a relation of common bus neighbouring relations in the specific embodiment of the invention；

Fig. 5 be the specific embodiment of the invention in based on multiple agent containing distributed power distribution network protect control method Flow chart.

Specific embodiment

Below in conjunction with the accompanying drawings the specific embodiment of the invention is described in detail.

The present invention is proposed based on multiple agent Protection control system containing distributed power distribution network and method.

It is a kind of based on multiple agent Protection control system containing distributed power distribution network, as shown in figure 1, including basal layer And decision-making level.

In present embodiment, the network structure containing distributed power distribution network is that the multiterminal for having many distributed power sources to access are supplied Electric network, as illustrated in fig. 2, it is assumed that being short-circuited failure in f points, each intelligent body of basal layer focuses on device with the information of decision-making level Between adopt fiber optic communication.

Basal layer, including the intelligent body at each breaker being configured in the power distribution network network containing distributed power source.

Basal layer, for the fault-current signal at each mount point of the collection containing distributed power distribution network, correspondence open circuit The positional information of the on off state of device and corresponding intelligent body, carries out processing to the fault-current signal at each mount point The polarity of the transient high-frequency component of the surveyed fault-current signal at each mount point is high by the transient state of surveyed fault-current signal The positional information of the polarity and its correspondence intelligent body of frequency component is uploaded to decision-making level, and is obtaining the shut-off correspondence open circuit of decision-making level During the command signal of device, trip command is sent, turn off corresponding breaker.

Each intelligent body of basal layer includes：The inspection of signal detection module, signal conversion module, intelligent body and bypass position Survey module, signal polarity computing module and Fault Isolation module.

Signal detection module, for detecting the on off state of fault-current signal and correspondence breaker at its mount point.

Intelligent body and bypass position detection module, for detecting the positional information of intelligent body correspondence breaker, are sent to certainly Plan layer.

Signal conversion module, carries out phase-model transformation and wavelet transformation for the fault-current signal to detecting, and obtains institute Survey the transient high-frequency component of fault-current signal.

In present embodiment, phase-model transformation is carried out to the fault-current signal to detecting, carrying out wavelet transformation to which, The waveform of the transient high-frequency component of surveyed fault-current signal is obtained, is eliminated because the access of distributed power source is to distribution network failure electricity The impact that stream amplitude is brought.

Signal polarity computing module, for calculating surveyed failure according to the transient high-frequency component of surveyed fault-current signal The polarity of the transient high-frequency component of current signal, show that its polarity is exported, is sent to decision-making level.

In present embodiment, surveyed fault-current signal is calculated according to the transient high-frequency component of surveyed fault-current signal Transient high-frequency component polarity, show that the detailed process of its polarity output is as follows：

Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time value t；

Calculate the polarity number k of the transient high-frequency component of surveyed fault-current signal, the i.e. transient high frequency of fault-current signal First peak value i of component i_max1The ratio of corresponding time value t；

In present embodiment, shown in the polarity number k such as formulas (1) of the transient high-frequency component for calculating surveyed fault-current signal：

The transient state of surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of high fdrequency component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is for just, polarity is output as 1, as k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

Fault Isolation module, for when the command signal of shut-off correspondence breaker of decision-making level is obtained, sending tripping operation and referring to Order, turns off corresponding breaker.

Decision-making level, the information of the mesolow transformer station to be configured in the power distribution network network containing distributed power source focus on Device.

Decision-making level, for receiving the pole of the transient high-frequency component of the surveyed fault-current signal of each intelligent body transmission of basal layer Property and its correspondence intelligent body positional information, determine there are altogether power transmission line neighbouring relations according to the positional information of each intelligent body Intelligent body and the intelligent body that there are common bus neighbouring relations, export according to each intelligent body position relationship and its polarity, determine failure Generation section, and the command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer.

The information of decision-making level focuses on device mainly to be included：Intelligent body position relationship judge module and breakdown judge module.

Intelligent body position relationship judge module, for determining intelligent body relational matrix R according to the positional information of each intelligent body, And the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations is determined, and be respectively sent to Breakdown judge module.

In present embodiment, intelligent body relational matrix R is determined according to the positional information of each intelligent body, and determines presence altogether The detailed process of the intelligent body of power transmission line neighbouring relations and the intelligent body that there are common bus neighbouring relations is as follows：

Network containing distributed power distribution network is converted into by switch-branch road Matrix C according to the positional information of each intelligent body；

In present embodiment, using each the intelligent body place breaker containing distributed power distribution network as in network topology Node, all power transmission line circuits between two nodes as branch road, using the branch road for being distributed formula plant-grid connection same as opening up Structure branch road is flutterred, according to node and the relation of branch road, is formed shown in switch-branch road Matrix C such as formula (2)：

Wherein, it is that intelligent body is compiled to form the node serial number in the line number map network topological structure of switch-branch road Matrix C Number, the branch number in columns map network topological structure, often in row, the value of each element represents corresponding node with corresponding branch road Between annexation, c_ijFor the annexation of No. i-th intelligent body and j-th strip branch road, and 1≤i≤m | i ∈ Z }, m is intelligence in network The number of energy body, and 1≤j≤n | j ∈ Z }, n is the bar number of branch road in network, is directly connected when intelligent body is present with power transmission line branch road Meet relation, and intelligent body c at the right of power transmission line branch road_ij=1, it is directly connected to close when intelligent body and power transmission line branch road are present System, and intelligent body c at the left side of power transmission line branch road_ij=-1, when between intelligent body and power transmission line branch road without direct connection relational Or c when being connected with power transmission line branch road by bus_ij=0.

In present embodiment, shown in the switch for obtaining-branch road matrix such as formula (3)：

Intelligent body containing neighbouring relations between each intelligent body in distributed power distribution network is determined according to switch-branch road Matrix C Relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C；

In present embodiment, the computing formula such as formula of intelligent body relational matrix R is determined according to the positional information of each intelligent body (4) shown in：

In present embodiment, shown in each intelligent body relational matrix R such as formulas (5) for obtaining：

Intelligent body relational matrix R is split along two searching routes, power transmission line is adjacent altogether to determine all presence The intelligent body of relation and all intelligent bodies that there are common bus neighbouring relations.

In present embodiment, intelligent body relational matrix R is split along two searching routes, determine all presence The detailed process of the intelligent body and all intelligent bodies that there are common bus neighbouring relations of power transmission line neighbouring relations is as follows altogether：

It is determined that there is the intelligent body of power transmission line neighbouring relations altogether：Intelligent body relation embodying neighbouring relations between each intelligent body Matrix R is according to row vector r_i=[r_i1..., r_ij′..., r_im] scan for, if r_ij′When ≠ 0, then No. i-th intelligent body and jth ' number There are power transmission line branch road neighbouring relations altogether between intelligent body, if as shown in figure 3, r_ij′When=0, then No. i-th intelligent body and jth ' number There are no common power transmission line branch road neighbouring relations between intelligent body, determine all intelligent bodies that there are power transmission line neighbouring relations altogether, Wherein, r_iFor the row vector of the i-th row element composition in intelligent body relational matrix R, r_ij′For No. i-th intelligent body and jth ' intelligence Relation between body, and 1≤i, j '≤m | i, j ' ∈ Z }, m is the number of intelligent body in network.

In present embodiment, r_iIt is shown with the relation such as formula (6) of R：

It is determined that there is the intelligent body of common bus neighbouring relations：Intelligent body relation square embodying neighbouring relations between each intelligent body Battle array R is scanned for by its leading diagonal, from intelligent body relational matrix R top left hand element r₁₁Start, calculate r successively_ii×r_ii+1If, r_ii×r_ii+1=0 starts to add up, until r_ii×r_ii+1Stop when ≠ 0, by accumulative p_j″Individual r_iiElement is leading diagonal, structure Into a p_j″×p_j″Unit matrixSequentially find all unit squares with the common leading diagonals of intelligent body relational matrix R Battle array, the intelligent body in same unit matrix is the intelligent body that there are common bus neighbouring relations, as shown in figure 4, determining all There is the intelligent body of common bus neighbouring relations, wherein, 1≤i≤m | and i ∈ Z }, { 2≤p_j″＜ m, | p_j″∈Z}、{1≤j″≤q| J " ∈ Z } and p₁+…+p_j″-1+p_j″+p_j″+1+…+p_q=m, q are unit matrix number in intelligent body relational matrix R.

In present embodiment, unit matrixIt is shown with the relation such as formula (7) of intelligent body relational matrix R：

In formula,It is all unit matrix with the common leading diagonals of intelligent body relational matrix R,For Corresponding matrix-block, p_j″For ranks number in each matrix in block form.

In present embodiment, according to the common transmission of electricity of each intelligent body in the network structure containing distributed power distribution network in Fig. 2 Line neighbouring relations and common bus neighbouring relations are as shown in table 1：

The common power transmission line neighbouring relations and common bus neighbouring relations of 1 each intelligent body of table

Intelligent body is numbered	Common power transmission line neighbouring relations	Common bus neighbouring relations
			S1	Nothing	S2、S3
S2	S8	S1、S3
			S3	S4	S1、S2
S4	S3	S5、S6
			S5	Nothing	S4、S6
S6	S7	S4、S5
			S7	S6	S8、S9
S8	S2	S7、S9
			S9	Nothing	S7、S8

Breakdown judge module, exports by the polarity to there is the intelligent body of power transmission line neighbouring relations altogether based on carrying out logic Calculating, judging on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to whether there is failure, to there is the adjacent pass of common bus The polarity output of the intelligent body of system carries out logical calculated, judges whether send out on the bus between the intelligent body of common bus neighbouring relations Raw failure, and the command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer.

In present embodiment, classified storage is carried out to the information in intelligent body position relationship judge module, is recorded Each intelligent body and the intelligent body that there are common bus neighbouring relations and common power transmission line neighbouring relations with which are numbered, and are numbered one by one Correspondence.

Polarity output to there is the intelligent body of power transmission line neighbouring relations altogether carries out logical calculated, judges that power transmission line is adjacent altogether Whether there is failure on power transmission line between the intelligent body of relation, the polarity output to the intelligent body that there are common bus neighbouring relations Logical calculated is carried out, judges that the detailed process whether broken down on the bus between the intelligent body of common bus neighbouring relations is as follows It is shown：

In present embodiment, the multiterminal supply network for having many distributed power sources accesses according to Fig. 2, when containing distributed When in electrical power distribution net, f points break down, each intelligent body is converted and is counted by detecting to point fault-current signal Calculate, the polarity output result of last each intelligent body is as shown in table 2：

The polarity output result of 2 each intelligent body of table

Intelligent body is numbered	Polarity results are exported
		S1	k1=1
S2	k2=0
		S3	k3=0
S4	k4=1
		S5	k5=1
S6	k6=0
		S7	k7=1
S8	k8=0
		S9	k9=1

The determination methods for having fault-free to occur are carried out to there is the power transmission line altogether between the intelligent body of power transmission line neighbouring relations It is as follows：

Same or logic is carried out with the polarity output of j ' intelligent bodies to there is No. i-th intelligent body of power transmission line neighbouring relations altogether Computing, obtains intelligent body Polarity comparision value k_{I, j '}As shown in formula (8)：

Wherein, k_iPolarity for No. i-th intelligent body is exported, k_j″Polarity for jth ' intelligent body is exported,Be with or patrol Collect operator.

If k_{I, j "}For 1, represent that No. i-th intelligent body is identical with j ' intelligent body polarity output results, then No. i-th intelligent body and There is failure on power transmission line between j ' intelligent bodies, if k_{I, j '}For 0, represent that No. i-th intelligent body is defeated with j ' intelligent body polarity Go out result different, then do not break down or external area error on the power transmission line between No. i-th intelligent body and j ' intelligent bodies.

There are the determination methods that fault-free occurs as follows on bus to the intelligent body that there are common bus neighbouring relations：

Polarity output first to the intelligent body that there are common bus neighbouring relations carries out same or logical operation two-by-two, then to same Or after logical operation, the result of calculation of gained is carried out and logical operation, obtains each intelligent body polarity Integrated comparative on xth bus Value k_{Bus_x}As shown in formula (9)：

Wherein, ＆ is and logical operator, and 1≤x≤n ' | x ∈ Z }, m ' is the intelligent body being joined directly together with x buses Number, n ' is the bus number containing distributed power distribution network, 1≤i ＜ m | and i ∈ Z }, m is the number of intelligent body in network.

If k_{Bus_x}=1, represent that all intelligent body polarity outputs being connected with x buses are identical, then occur on x buses Failure, now needs to send instructions and orders its correspondence breaker actuation, if k_{Bus_x}=0, deposit in representing the intelligent body being connected with x buses It is different from other intelligent bodies in the output of some or several intelligent body polarity, then do not break down on x buses or area outside it is former Barrier.

It is in present embodiment, on the basis of known each intelligent body adjacent position relation and the output of each intelligent body polarity, right Intelligent body with common power transmission line neighbouring relations and the intelligent body with common bus neighbouring relations carry out Polarity comparision, calculate respectively Go out intelligent body Polarity comparision value k_{I, j '}With each intelligent body polarity Integrated comparative value k on xth bus_{Bus_x}, and according to k_{I, j '}With k_{Bus X}Result determine fault section, in system containing distributed power distribution network as shown in Figure 2, k_{I, j '}And k_{Bus X}Calculating As a result it is as shown in table 3：

3 k of table_{I, j '}And k_{Bus X}Result of calculation

After determining that failure occurs between intelligent body 2,3, the finger for disconnecting correspondence breaker is sent immediately to corresponding intelligent body Signal, intelligent body is made to send trip command to respective circuit breakers after command adapted thereto signal is received, cut off rapidly the section, every From failure.

Using based on multiple agent containing distributed power distribution network Protection control system containing distributed power distribution network Protection control method, as shown in figure 5, comprising the following steps：

S1：By the fault current letter at each each mount point of the intelligent body collection containing distributed power distribution network of basal layer Number, correspondence breaker on off state and corresponding intelligent body positional information.

S2：Phase-model transformation and wavelet transformation are carried out to the fault-current signal for detecting by each intelligent body of basal layer, Obtain the transient high-frequency component of surveyed fault-current signal.

S3：Surveyed event is calculated according to the transient high-frequency component of surveyed fault-current signal by each intelligent body of basal layer The polarity of the transient high-frequency component of barrier current signal, show that its polarity is exported.

S31：Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time Value t.

S32：Calculate the polarity number k of the transient high-frequency component of surveyed fault-current signal, the i.e. transient state of fault-current signal First peak value i of high fdrequency component i_max1The ratio of corresponding time value t.

S33：Surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of transient high-frequency component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is for just, polarity is defeated Go out for 1, as k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

S4：The positional information of correspondence intelligent body and polarity output are sent to by decision-making level by each intelligent body of basal layer.

S5：Device is focused on by the information of decision-making level intelligent body relational matrix is determined according to the positional information of each intelligent body R, and determine the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations.

S51：Network containing distributed power distribution network is converted into by switch-branch road square according to the positional information of each intelligent body Battle array C.

S52：Determined according to switch-branch road Matrix C and embodied containing neighbouring relations between each intelligent body in distributed power distribution network Intelligent body relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C.

S53：Intelligent body relational matrix R is split along two searching routes, determine all presence power transmission line altogether The intelligent body of neighbouring relations and all intelligent bodies that there are common bus neighbouring relations.

S6：Polarity output of the device to there is the intelligent body of power transmission line neighbouring relations altogether is focused on by the information of decision-making level Logical calculated is carried out, judges whether break down on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to existing altogether The polarity output of the intelligent body of bus neighbouring relations carries out logical calculated, judges the mother between the intelligent body of common bus neighbouring relations Whether break down on line, and send the finger of shut-off correspondence breaker according to breakdown judge result to the corresponding intelligent body of basal layer Make signal.

S61：Polarity output to there is altogether No. i-th intelligent body of power transmission line neighbouring relations and j ' intelligent bodies carry out with or Logical operation, obtains intelligent body Polarity comparision value k_{I, j '}As shown in formula (8).

S62：If k_{I, j '}For 1, then there is failure on the power transmission line between No. i-th intelligent body and j ' intelligent bodies, if k_{I, j '}For 0, then do not break down or external area error on the power transmission line between No. i-th intelligent body and j ' intelligent bodies.

S63：Polarity output first to the intelligent body that there are common bus neighbouring relations carries out same or logical operation two-by-two, then The result of calculation of gained after same or logical operation is carried out and logical operation, each intelligent body polarity synthesis on xth bus is obtained Fiducial value k_{Bus_x}As shown in formula (9).

S64：If k_{Bus_x}=1, then break down on x buses, if k_{Bus_x}=0, then do not break down on x buses or Person's external area error.

S65：The command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer.

S7：By each intelligent body of basal layer when the command signal of shut-off correspondence breaker of decision-making level is obtained, send Trip command is to correspondence breaker so as to turn off.

The present invention can quickly tackle the change containing distributed power distribution network structure, due to distributed power source input or Exit, the failure of network or maintenance, up-to-date information that the present invention can be measured according to intelligent physical examination and safely and fast reliable Communication network, forms newest network structure, determines the neighbouring relations between each intelligent body in time, and these can be fast by software Speed is automatically performed, meanwhile, using wavelet transformation technique, thoroughly eliminate because distributed power source is accessed and bring to fault current Negative effect.More enough preferable protective effects realized to containing distributed power distribution network.

Claims (10)

1. it is a kind of based on multiple agent Protection control system containing distributed power distribution network, it is characterised in that including basal layer And decision-making level；

The basal layer, including the intelligent body at each breaker being configured in the power distribution network network containing distributed power source；

The basal layer, for the fault-current signal at each mount point of the collection containing distributed power distribution network, correspondence open circuit The positional information of the on off state of device and corresponding intelligent body, carries out processing to the fault-current signal at each mount point The polarity of the transient high-frequency component of the surveyed fault-current signal at each mount point is high by the transient state of surveyed fault-current signal The positional information of the polarity and its correspondence intelligent body of frequency component is uploaded to decision-making level, and is obtaining the shut-off correspondence open circuit of decision-making level During the command signal of device, trip command is sent, turn off corresponding breaker；

Each intelligent body of the basal layer includes：The inspection of signal detection module, signal conversion module, intelligent body and bypass position Survey module, signal polarity computing module and Fault Isolation module；

The signal detection module, for detecting the on off state of fault-current signal and correspondence breaker at its mount point；

The intelligent body and bypass position detection module, for detecting the positional information of intelligent body, are sent to decision-making level；

The signal conversion module, carries out phase-model transformation and wavelet transformation for the fault-current signal to detecting, and obtains institute Survey the transient high-frequency component of fault-current signal；

The signal polarity computing module, for calculating surveyed failure according to the transient high-frequency component of surveyed fault-current signal The polarity of the transient high-frequency component of current signal, show that its polarity is exported, is sent to decision-making level；

The Fault Isolation module, for when the command signal of shut-off correspondence breaker of decision-making level is obtained, sending tripping operation and referring to Order, turns off corresponding breaker；

The decision-making level, the information of the mesolow transformer station to be configured in the power distribution network network containing distributed power source focus on Device；

The decision-making level, for receiving the pole of the transient high-frequency component of the surveyed fault-current signal of each intelligent body transmission of basal layer Property and its correspondence intelligent body positional information, determine there are altogether power transmission line neighbouring relations according to the positional information of each intelligent body Intelligent body and the intelligent body that there are common bus neighbouring relations, export according to each intelligent body position relationship and its polarity, determine failure Generation section, and the command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer；

The information of the decision-making level focuses on device mainly to be included：Intelligent body position relationship judge module and breakdown judge module；

The intelligent body position relationship judge module, for determining intelligent body relational matrix R according to the positional information of each intelligent body, And the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations is determined, and be respectively sent to Breakdown judge module；

The breakdown judge module, exports by the polarity to there is the intelligent body of power transmission line neighbouring relations altogether based on carrying out logic Calculating, judging on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to whether there is failure, to there is the adjacent pass of common bus The polarity output of the intelligent body of system carries out logical calculated, judges whether send out on the bus between the intelligent body of common bus neighbouring relations Raw failure, and the command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer；

The information of each intelligent body of the basal layer and decision-making level is focused on.

2. according to claim 1 based on multiple agent Protection control system containing distributed power distribution network, its feature It is that the transient high-frequency component according to surveyed fault-current signal calculates the transient high frequency point of surveyed fault-current signal The polarity of amount, show that the detailed process of its polarity output is as follows：

Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time value t；

Calculate the polarity number k, i.e. the transient high-frequency component i of fault-current signal of the transient high-frequency component of surveyed fault-current signal First peak value i_max1The ratio of corresponding time value t；

The transient high frequency of surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is that just polarity is output as 1, when During k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

3. according to claim 1 based on multiple agent Protection control system containing distributed power distribution network, its feature It is that the positional information according to each intelligent body determines intelligent body relational matrix R, and determines the presence adjacent pass of power transmission line altogether The detailed process of the intelligent body of system and the intelligent body that there are common bus neighbouring relations is as follows：

Network containing distributed power distribution network is converted into by switch-branch road Matrix C according to the positional information of each intelligent body；

Determined according to switch-branch road Matrix C and embody the intelligent body containing neighbouring relations between each intelligent body in distributed power distribution network Relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C；

Intelligent body relational matrix R is split along two searching routes, determine all presence power transmission line neighbouring relations altogether Intelligent body and all intelligent bodies that there are common bus neighbouring relations.

4. according to claim 3 based on multiple agent Protection control system containing distributed power distribution network, its feature It is that the network containing distributed power distribution network is converted into switch-branch road Matrix C by the positional information according to each intelligent body Detailed process it is as follows：

Using each the intelligent body place breaker containing distributed power distribution network as the node in network topology, between two nodes All power transmission line circuits as branch road, the branch road of formula plant-grid connection will be distributed equally as topological structure branch road, according to section The relation of point and branch road, forms switch-branch road Matrix C：

$C=\left[\begin{array}{ccccc}{c}_{11}& c_{12}& c_{12}& \mathrm{...}& c_{1n}\\ c_{21}& c_{22}& c_{23}& \mathrm{...}& c_{2n}\\ c_{31}& c_{32}& c_{33}& \mathrm{...}& c_{3n}\\ .& .& .& .& .\\ .& .& .& .& .\\ .& .& .& .& .\\ c_{m1}& c_{m2}& c_{m3}& \mathrm{...}& c_{mn}\end{array}\right];$

Wherein, c_ijFor the annexation of No. i-th intelligent body and j-th strip branch road, and 1≤i≤m | i ∈ Z }, m is intelligent body in network Number, { 1≤j≤n | j ∈ Z }, n are the bar number of branch road in network, are directly connected to close when intelligent body and power transmission line branch road are present System, and intelligent body c at the right of power transmission line branch road_ij=1, when intelligent body and power transmission line branch road have direct connection relational, and Intelligent body c at the left side of power transmission line branch road_ij=-1, when without direct connection relational or passing through between intelligent body and power transmission line branch road C when bus is connected with power transmission line branch road_ij=0.

5. according to claim 3 based on multiple agent Protection control system containing distributed power distribution network, its feature It is that described intelligent body relational matrix R to be split along two searching routes, power transmission line is adjacent altogether to determine all presence The detailed process of the intelligent body of relation and all intelligent bodies that there are common bus neighbouring relations is as follows：

It is determined that there is the intelligent body of power transmission line neighbouring relations altogether：Intelligent body relational matrix embodying neighbouring relations between each intelligent body R is according to row vector r_i=[r_i1..., r_ij′..., r_im] scan for, if r_ij′When ≠ 0, then No. i-th intelligent body and jth ' intelligence There are power transmission line branch road neighbouring relations altogether between body, if r_ij′When=0, then do not deposit between No. i-th intelligent body and jth ' intelligent body In common power transmission line branch road neighbouring relations, all intelligent bodies that there are power transmission line neighbouring relations altogether are determined, wherein, r_iFor intelligent body The row vector of the i-th row element composition, r in relational matrix R_ij′For the relation between No. i-th intelligent body and jth ' intelligent body, { 1 ≤ i, j '≤m | i, j ' ∈ Z }, m is the number of intelligent body in network；

It is determined that there is the intelligent body of common bus neighbouring relations：Intelligent body relational matrix R embodying neighbouring relations between each intelligent body Scan for by its leading diagonal, from intelligent body relational matrix R top left hand element r₁₁Start, calculate r successively_ii×r_ii+1If, r_ii ×r_ii+1=0 starts to add up, until r_ii×r_ii+1Stop when ≠ 0, by accumulative p_j″Individual r_iiElement is leading diagonal, constitutes one Individual p_j″×p_j″Unit matrixThe all unit matrixs with the common leading diagonals of intelligent body relational matrix R are sequentially found, together Intelligent body in one unit matrix is the intelligent body that there are common bus neighbouring relations, determines all there is the adjacent pass of common bus The intelligent body of system, wherein, 1≤i≤m | and i ∈ Z }, { 2≤p_j″＜ m, | p_j″∈ Z }, 1≤j "≤q | j " ∈ Z } and p₁+…+p_j″-1 +p_j″+p_j″+1+…+p_q=m, q are unit matrix number in intelligent body relational matrix R.

6. according to claim 1 based on multiple agent Protection control system containing distributed power distribution network, its feature It is that the described pair of polarity output that there is the intelligent body of power transmission line neighbouring relations altogether carries out logical calculated, judges power transmission line phase altogether Whether there is failure on power transmission line between the intelligent body of adjacent relation, it is defeated to the polarity of the intelligent body that there are common bus neighbouring relations Go out to carry out logical calculated, judge the detailed process whether broken down on the bus between the intelligent body of common bus neighbouring relations such as Shown in lower：

The determination methods for having fault-free to occur to existing the power transmission line altogether between the intelligent body of power transmission line neighbouring relations to carry out are as follows：

Same or logic fortune is carried out with the polarity output of j ' intelligent bodies to there is No. i-th intelligent body of power transmission line neighbouring relations altogether Calculate, obtain intelligent body Polarity comparision value k_{I, j '}：

k_{I, j '}=k_i⊙k_j′；

Wherein, k_iPolarity for No. i-th intelligent body is exported, k_j′Polarity for jth ' intelligent body is exported；

If k_{I, j '}For 1, then there is failure on the power transmission line between No. i-th intelligent body and j ' intelligent bodies, if k_{I, j '}For 0, then i-th Do not break down or external area error on power transmission line number between intelligent body and j ' intelligent bodies；

There are the determination methods that fault-free occurs as follows on bus to the intelligent body that there are common bus neighbouring relations：

First the polarity output of the intelligent body that there are common bus neighbouring relations is carried out two-by-two with or logical operation, then to or patrol After collecting computing, the result of calculation of gained is carried out and logical operation, obtains each intelligent body polarity Integrated comparative value on xth bus k_{Bus_x}：

k_{Bus_x}=(k_i⊙k_i+1)&(k_i+1⊙k_i+2)&…&(k_i+m′-2⊙k_i+m′-1)&(k_i+m′-1⊙k_i)；

Wherein, 1≤x≤n ' | and x ∈ Z }, m ' is the intelligent body number being joined directly together with x buses, and n ' is to match somebody with somebody containing distributed power source The bus number of electrical network, and 1≤i ＜ m | i ∈ Z }, m is the number of intelligent body in network；

If k_{Bus_x}=1, then break down on x buses, if k_{Bus_x}=0, then do not break down on x buses or area outside therefore Barrier.

7. using described in claim 1 based on multiple agent containing distributed power distribution network Protection control system containing distribution Formula electrical power distribution net protects control method, it is characterised in that comprise the following steps：

S1：By the fault-current signal at each intelligent body each mount point of the collection containing distributed power distribution network of basal layer, The positional information of the on off state and corresponding intelligent body of correspondence breaker；

S2：Phase-model transformation and wavelet transformation are carried out to the fault-current signal for detecting by each intelligent body of basal layer, is obtained The transient high-frequency component of surveyed fault-current signal；

S3：Surveyed failure electricity is calculated according to the transient high-frequency component of surveyed fault-current signal by each intelligent body of basal layer The polarity of the transient high-frequency component of stream signal, show that its polarity is exported；

S4：The positional information of correspondence intelligent body and polarity output are sent to by decision-making level by each intelligent body of basal layer；

S5：Device is focused on by the information of decision-making level intelligent body relational matrix R is determined according to the positional information of each intelligent body, and Determine the intelligent body that there is the intelligent body of power transmission line neighbouring relations altogether and there are common bus neighbouring relations；

S6：Polarity output of the device to there is the intelligent body of power transmission line neighbouring relations altogether is focused on by the information of decision-making level is carried out Logical calculated, judges whether break down on power transmission line altogether between the intelligent body of power transmission line neighbouring relations, to there is common bus The polarity output of the intelligent body of neighbouring relations carries out logical calculated, judges on the bus between the intelligent body of common bus neighbouring relations Whether break down, and send the instruction letter of shut-off correspondence breaker according to breakdown judge result to the corresponding intelligent body of basal layer Number；

S7：By each intelligent body of basal layer when the command signal of shut-off correspondence breaker of decision-making level is obtained, tripping operation is sent Instruct to correspondence breaker so as to turn off.

8. it is according to claim 7 to protect control method containing distributed power distribution network, it is characterised in that step S3 Comprise the following steps：

S31：Extract first peak value i of the transient high-frequency component i of surveyed fault-current signal_max1And its corresponding time value t；

S32：Calculate the polarity number k of the transient high-frequency component of surveyed fault-current signal, the i.e. transient high frequency of fault-current signal First peak value i of component i_max1The ratio of corresponding time value t；

S33：The transient state of surveyed fault-current signal is determined according to the polarity number k of the transient high-frequency component of surveyed fault-current signal The polarity of high fdrequency component, i.e., as k ＞ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is for just, polarity is output as 1, as k ＜ 0, the polarity of the transient high-frequency component of surveyed fault-current signal is negative, and polarity is output as 0.

9. it is according to claim 7 to protect control method containing distributed power distribution network, it is characterised in that step S5 Comprise the following steps：

S51：Network containing distributed power distribution network is converted into by switch-branch road Matrix C according to the positional information of each intelligent body；

S52：Determined according to switch-branch road Matrix C and embody the intelligence containing neighbouring relations between each intelligent body in distributed power distribution network Can body relational matrix R=CC^T, wherein, C^TFor the transposition of switch-branch road Matrix C；

S53：Intelligent body relational matrix R is split along two searching routes, power transmission line is adjacent altogether to determine all presence The intelligent body of relation and all intelligent bodies that there are common bus neighbouring relations.

10. it is according to claim 7 to protect control method containing distributed power distribution network, it is characterised in that the step S6 is comprised the following steps：

S61：Same or logic is carried out with the polarity output of j ' intelligent bodies to there is No. i-th intelligent body of power transmission line neighbouring relations altogether Computing, obtains intelligent body Polarity comparision value k_{I, j}′：

k_{I, j '}=k_i⊙k_j′；

Wherein, k_iPolarity for No. i-th intelligent body is exported, k_j′Polarity for jth ' intelligent body is exported；

S62：If k_{I, j '}For 1, then there is failure on the power transmission line between No. i-th intelligent body and j ' intelligent bodies, if k_{I, j '}For 0, then Do not break down or external area error on power transmission line between No. i-th intelligent body and j ' intelligent bodies；

S63：Polarity output first to the intelligent body that there are common bus neighbouring relations carries out same or logical operation two-by-two, then to same Or after logical operation, the result of calculation of gained is carried out and logical operation, obtains each intelligent body polarity Integrated comparative on xth bus Value k_{Bus_x}：

k_{Bus_x}=(k_i⊙k_i+1)&(k_i+1⊙k_i+2)&…&(k_i+m′-2⊙k_i+m′-1)&(k_i+m′-1⊙k_i)；

Wherein, 1≤x≤n ' | and x ∈ Z }, m ' is the intelligent body number being joined directly together with x buses, and n ' is to match somebody with somebody containing distributed power source The bus number of electrical network, and 1≤i ＜ m | i ∈ Z }, m is the number of intelligent body in network；

S64：If k_{Bus_x}=1, then break down on x buses, if k_{Bus_x}=0, then do not break down on x buses or area outside Failure；

S65：The command signal of shut-off correspondence breaker is sent according to breakdown judge result to the corresponding intelligent body of basal layer.