CN110571772B - Power distribution network line automatic reclosing control method adaptive to distributed power supply access - Google Patents

Power distribution network line automatic reclosing control method adaptive to distributed power supply access Download PDF

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Publication number
CN110571772B
CN110571772B CN201911018882.3A CN201911018882A CN110571772B CN 110571772 B CN110571772 B CN 110571772B CN 201911018882 A CN201911018882 A CN 201911018882A CN 110571772 B CN110571772 B CN 110571772B
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line
distributed power
power supply
reclosing
switch
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CN110571772A (en
Inventor
周福举
薛风华
王秀茹
王洪寅
石爱祥
韩少华
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State Grid Jiangsu Electric Power Co ltd Suqian Power Supply Branch
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
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State Grid Jiangsu Electric Power Co ltd Suqian Power Supply Branch
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H02H3/063—Details concerning the co-operation of many similar arrangements, e.g. in a network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems

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Abstract

The invention provides a power distribution network line automatic reclosing control method suitable for distributed power supply access, which comprises the following steps: 1) establishing a distributed power supply associated line set network topology matrix; 2) setting a reclosing control word of a distributed power supply associated line set; 3) and determining a reclosing control strategy of the circuit containing the distributed power supply. The invention overcomes the defects that the reclosing is stopped and the reclosing needs to be manually switched when the operation mode is changed because the substation is not provided with the line PT in the distributed power supply access line of the power distribution network, effectively prevents the asynchronous reclosing of the distributed power supply access line, improves the power supply reliability, automatically adapts to various operation modes of the line and ensures the safe operation of the power distribution network.

Description

Power distribution network line automatic reclosing control method adaptive to distributed power supply access
Technical Field
The invention relates to the technical field of relay protection and control of a power system, in particular to a power distribution network line automatic reclosing control method suitable for distributed power supply access.
Background
The power distribution network is arranged at the tail end of a power system, faults of the power distribution network frequently occur due to the fact that a network structure is complex, circuit elements are multiple, and the operating environment is severe, wherein transient faults account for a considerable proportion, and in order to improve power supply reliability, the automatic reclosing technology is widely adopted for power distribution network circuits.
With the access of a large number of distributed power supplies to a power distribution network, the operating characteristics and protection control of the power distribution network are remarkably changed, and if the access line of the distributed power supplies fails, the system side and the distributed power supplies are switched on asynchronously by adopting a conventional reclosing method, so that impact current seriously endangering equipment safety is generated.
In order to prevent asynchronous switching-on, a voltage detection reclosing mode or a reclosing quitting mode is mainly adopted at present, a line PT needs to be arranged on a substation outgoing line side by adopting the voltage detection reclosing mode, at present, lines PT are rarely arranged on a substation side of a distribution network line of 35kV or below, the pressure of high-quality service and reliable power supply is forced, and power failure transformation is difficult to realize, so that the reclosing quitting mode is basically adopted for a distributed power supply access line under most conditions, and the power supply reliability is greatly influenced.
Distribution network line is because of operation mode adjustment such as maintenance, accident handling frequently, and the distributed generator access line changes each time and all needs the relevant net twine reclosing mode of manual adjustment, and distribution network line contacts many, rack structure is complicated in addition, and frequent complicated fortune square adjustment has invisibly increased regulators's operating pressure, makes distribution network safety in production face severe examination.
Disclosure of Invention
The invention provides a power distribution network line automatic reclosing control method adaptive to distributed power supply access, and aims to improve the power supply reliability of the distributed power supply access line and automatically adapt to the operation mode adjustment of the distributed power supply access line.
The technical solution of the invention is as follows: a power distribution network line automatic reclosing control method adapting to distributed power supply access comprises the following steps:
(1) establishing a distributed power supply associated line set network topology matrix;
(2) setting a reclosing control word of a distributed power supply associated line set;
(3) and determining a reclosing control strategy of the circuit containing the distributed power supply.
The distributed power supply associated line set is a set formed by a distributed power supply access line and a handle contact line thereof in a normal operation mode, and is referred to as an associated set for short.
Further, the step (1) of establishing the distributed power supply associated line set network topology matrix specifically includes:
1-1) reading a single line diagram of all lines in an association set from a device asset management system (PMS), the ith line for
Figure 100002_DEST_PATH_IMAGE002
Indicates that i =1, 2, …, p,pthe number of lines in the relevant concentration is;
1-2) each line
Figure 100002_DEST_PATH_IMAGE004
Numbering all distribution automation switches capable of forming ring network operation according to single line diagram pole numbers by taking a transformer substation switch as a starting point, and acquiring real-time position information of the switches;
1-3) each distributed power supply
Figure 100002_DEST_PATH_IMAGE006
Marked according to the single line rod number in the access line ring network,j=1，2，…，q，qfor correlating the number of centralized distributed power supplies, the circuit is operated in normal mode
Figure 100002_DEST_PATH_IMAGE008
The number of distributed power supplies contained is recorded as
Figure 100002_DEST_PATH_IMAGE010
；
1-4) centralizing the contact relation, the switch on-off state and the distribution of each circuit handle according to the associationThe power supply access positions connect all the related lines to form a line
Figure DEST_PATH_IMAGE008A
An association set network topology matrix.
Further, the step (2) of setting a reclosing control word of the distributed power supply associated line set specifically includes:
2-1) read line
Figure 100002_DEST_PATH_IMAGE004A
Associating each switch position signal and a transformer substation switch accident signal in the network topology matrix;
2-2) if the line
Figure 100002_DEST_PATH_IMAGE004AA
If the switch is shifted, the step 2-3) is carried out, otherwise, the step 2-1) is returned;
2-3) if the line
Figure DEST_PATH_IMAGE004AAA
If no substation switch accident signal exists, the step 2-4 is carried out, otherwise, the step (3) is carried out;
2-4) according to the line
Figure DEST_PATH_IMAGE004AAAA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE006A
Switching position signals between the access positions forming a circuit
Figure DEST_PATH_IMAGE004AAAAA
To distributed power supply
Figure DEST_PATH_IMAGE006AA
Adjustment vector of the square of the fortune
Figure 100002_DEST_PATH_IMAGE012
，i=1，2，…，p，j=1，2，…，qWherein, in the step (A),
Figure 100002_DEST_PATH_IMAGE014
，
in the formula (I), the compound is shown in the specification,k=1，2，…，
Figure 100002_DEST_PATH_IMAGE016
，
Figure 100002_DEST_PATH_IMAGE016A
as a line
Figure DEST_PATH_IMAGE008AA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE006AAA
The number of switches between the access positions,
Figure 100002_DEST_PATH_IMAGE012A
is composed of
Figure 100002_DEST_PATH_IMAGE018
An order row vector;
2-5) on the line
Figure DEST_PATH_IMAGE004AAAAAA
Adjustment vector of the square of the fortune
Figure DEST_PATH_IMAGE012AA
Screening out vectors with all elements being 1 to obtain
Figure 100002_DEST_PATH_IMAGE020
；
2-6) vectors that will satisfy the conditions of 2-5)
Figure DEST_PATH_IMAGE020A
The highest order is recorded as
Figure 100002_DEST_PATH_IMAGE022
The corresponding distributed power supply number is
Figure 100002_DEST_PATH_IMAGE024
；
2-7) vectors that will satisfy the conditions of 2-5)
Figure DEST_PATH_IMAGE020AA
Number to
Figure 100002_DEST_PATH_IMAGE026
；
2-8) if
Figure 100002_DEST_PATH_IMAGE028
Then line
Figure DEST_PATH_IMAGE008AAA
Reclosing control word
Figure 100002_DEST_PATH_IMAGE030
Setting to 0, withdrawing the reclosing of the line substation switch, if so
Figure 100002_DEST_PATH_IMAGE032
Then line
Figure DEST_PATH_IMAGE008AAAA
Reclosing control word
Figure 100002_DEST_PATH_IMAGE030A
And setting the value to be 1, and starting the reclosing of the line substation switch.
Further, the specific step of determining that the distributed power supply line reclosing control strategy is included in the step (3) includes:
3-1) reading switch accident signals of each line transformer substation in the association set;
3-2) if the line
Figure DEST_PATH_IMAGE004AAAAAAA
Accident and reclosing control word
Figure 100002_DEST_PATH_IMAGE030AA
If the value is 0, entering the step 3-3), otherwise, returning to the step 3-1);
3-3) connecting the lines
Figure DEST_PATH_IMAGE004AAAAAAAA
Number of reclosure counts
Figure 100002_DEST_PATH_IMAGE034
Setting to 0;
3-4) read line
Figure DEST_PATH_IMAGE004AAAAAAAAA
From substation switches to distributed power supplies
Figure 100002_DEST_PATH_IMAGE024A
Voltage signals connected between pole numbers and on two sides of distribution automatic switch
Figure 100002_DEST_PATH_IMAGE036
、
Figure 100002_DEST_PATH_IMAGE038
，f=1，2，…，
Figure 100002_DEST_PATH_IMAGE022A
；
3-5) if
Figure 100002_DEST_PATH_IMAGE040
And is
Figure 100002_DEST_PATH_IMAGE042
And is
Figure 100002_DEST_PATH_IMAGE044
，f=1，2，…，
Figure DEST_PATH_IMAGE022AA
If yes, entering the step 3-6), otherwise, ending the process;
in the formula
Figure 100002_DEST_PATH_IMAGE046
Determining a limit value for the line without pressure;
3-6) time delaytSecond closing circuit
Figure DEST_PATH_IMAGE008AAAAA
Switch and circuit of transformer substation
Figure DEST_PATH_IMAGE008AAAAAA
Number of reclosure counts
Figure 100002_DEST_PATH_IMAGE048
；
WhereintThe reclosing time.
The invention has the beneficial effects that:
the invention overcomes the defects that the reclosing of a distributed power supply access line of a power distribution network is stopped because no line PT is installed on the outgoing line side of a transformer substation, and the reclosing of associated lines needs to be manually switched after the operation mode is adjusted.
Drawings
FIG. 1 is a flow chart of a control method for automatic reclosing of a power distribution network line, which is suitable for distributed power supply access, according to the invention;
FIG. 2 is a diagram of a three-segment two-contact three-power-supply-associated line set representative network topology matrix;
FIG. 3 is a flow chart of a method for setting a distributed power supply associated line set reclosing control word;
fig. 4 is a flowchart of a control strategy for determining a reclosing lock of a line with distributed power.
In fig. 2, 1-0, 2-0, 3-0, and 4-0 are numbers of corresponding line substation switches, respectively, 1-1, 1-16, 1-29, 1-41, 2-23, 2-9, 2-1, 3-95, 3-61, 3-27, 3-1, 4-89, 4-56, 4-31, and 4-1 are numbers of corresponding line distribution automation switch single line diagrams, respectively, and 1-7, 2-28, and 4-47 are access positions of corresponding line distributed power supplies on the single line diagram, respectively.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the method for controlling reclosing of a power distribution network line suitable for distributed power access according to the present invention includes the following steps:
step 1, establishing a distributed power supply associated line set network topology matrix;
FIG. 2 is a diagram of a three-segment two-contact three-distributed power source associated line set representative network topology matrix, in this particular embodiment, a single line diagram of all lines in the associated set is read from a device asset management system (PMS) system, the single line diagram representing all devices actually connected to a line of a power distribution network, the secondiLine circuit
Figure DEST_PATH_IMAGE008AAAAAAA
It is shown that,i=1，2，…，p，pfor associating the number of lines in the set, each line
Figure DEST_PATH_IMAGE008AAAAAAAA
Numbering all distribution automation switches capable of forming ring network operation according to single line diagram pole numbers by taking a transformer substation switch as a starting point, and acquiring real-time position information of the switches through a distribution automation system; each distributed power supply
Figure DEST_PATH_IMAGE006AAAA
Marked according to the single line rod number in the access line ring network,j=1，2，…，q，qfor correlating the number of centralized distributed power supplies, under the normal operation mode
Figure DEST_PATH_IMAGE008AAAAAAAAA
The number of distributed power supplies contained is recorded as
Figure DEST_PATH_IMAGE010A
(ii) a And connecting the associated lines according to the connection relation of the handles of each line in the associated set, the on-off state of the switches and the access positions of the distributed power supplies to form an associated set network topology matrix.
Step 2, setting a reclosing control word of the distributed power supply associated line set;
FIG. 3 is a flow chart of a control word for setting a reclosing lock of a distributed power source associated line set, which is accompanied by a switch shift signal when the operation mode of the line is adjusted, in this embodiment, the line is read from the distribution automation system
Figure DEST_PATH_IMAGE008AAAAAAAAAA
Associating switch position signals in the network topology matrix with substation switch accident signals, uploading the distribution automation switch position signals by a distribution automation terminal, synthesizing the substation switch accident signals by 'protection action signals + switch accident opening signals', and uploading the signals by a substation protection device; if the circuit is
Figure DEST_PATH_IMAGE008AAAAAAAAAAA
If there is switch deflection and there is no accident signal of transformer substation switch, then according to the line
Figure DEST_PATH_IMAGE004AAAAAAAAAA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE006AAAAA
Switching position signals between the access positions forming a circuit
Figure DEST_PATH_IMAGE004AAAAAAAAAAA
To distributed power supply
Figure DEST_PATH_IMAGE006AAAAAA
Adjustment vector of the square of the fortune
Figure DEST_PATH_IMAGE012AAA
，i=1，2，…，p，j=1，2，…，qWherein, in the step (A),
Figure DEST_PATH_IMAGE050
in the formula (I), the compound is shown in the specification,k=1，2，…，
Figure DEST_PATH_IMAGE052
，
Figure DEST_PATH_IMAGE052A
as a line
Figure DEST_PATH_IMAGE008AAAAAAAAAAAA
From power transformation switches to distributed power supplies
Figure DEST_PATH_IMAGE006AAAAAAA
The number of switches between the access positions,
Figure DEST_PATH_IMAGE012AAAA
is composed of
Figure DEST_PATH_IMAGE054
An order row vector;
if the circuit is
Figure 100002_DEST_PATH_IMAGE002A
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE006AAAAAAAA
If the switches between the access positions are all in the closed position, the distributed power supply is indicated
Figure DEST_PATH_IMAGE006AAAAAAAAA
Is connected to the line
Figure DEST_PATH_IMAGE004AAAAAAAAAAAA
Thus will route
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAA
Adjustment vector of the square of the fortune
Figure DEST_PATH_IMAGE056
Screening out the vector with all elements being 1 to obtain
Figure DEST_PATH_IMAGE020AAA
Will vector
Figure DEST_PATH_IMAGE020AAAA
Number to
Figure 100002_DEST_PATH_IMAGE026A
And extracting the vector
Figure DEST_PATH_IMAGE020AAAAA
Highest order number
Figure DEST_PATH_IMAGE022AAA
To characterize the line
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAAA
The distributed power supply position farthest away from the switch of the transformer substation corresponds to the distributed power supply with the serial number of
Figure DEST_PATH_IMAGE058
(ii) a If it is
Figure DEST_PATH_IMAGE028A
Then, it indicates the line
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAAAA
At least 1 distributed power supply with reclosing control word
Figure DEST_PATH_IMAGE030AAA
Setting the voltage value to be 0, and withdrawing the transformer substation switch reclosing soft pressing plate; if it is
Figure DEST_PATH_IMAGE032A
Then, it indicates the line
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAAAAA
Without distributed power supply, its reclosing control word
Figure DEST_PATH_IMAGE030AAAA
And setting the voltage to be 1, and switching on a reclosing soft pressing plate of the transformer substation switch.
Step 3, determining a reclosing control strategy of the circuit containing the distributed power supply;
fig. 4 is a flow chart of a reclosing control strategy for a line with a distributed power supply, in this embodiment, substation switching accident signals of each line in an association set are read, the substation switching accident signals can be synthesized by a "protection action signal + a switching accident opening signal", the substation switching accident signals are uploaded by a substation protection device, and the substation switching accident signals are recorded once from action to resetting; if the circuit is
Figure DEST_PATH_IMAGE004AAAAAAAAAAAAA
Accident and reclosing control word
Figure DEST_PATH_IMAGE030AAAAA
The value is 0, the fault happens to the line containing the distributed power supply, and the reclosing count is carried out
Figure DEST_PATH_IMAGE060
Set to 0, read line
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAAAAAA
Distributed power supply from substation switch to farthest distance
Figure DEST_PATH_IMAGE058A
Voltage signals connected between pole numbers and on two sides of distribution automatic switch
Figure DEST_PATH_IMAGE036A
、
Figure DEST_PATH_IMAGE038A
，f=1，2，…，
Figure DEST_PATH_IMAGE062
，
Figure DEST_PATH_IMAGE036AA
、
Figure DEST_PATH_IMAGE038AA
The PT on two sides of the distribution automation switch are collected and uploaded through an automation terminal, if the PT is collected and uploaded through the automation terminal
Figure DEST_PATH_IMAGE064
And is
Figure DEST_PATH_IMAGE066
And is
Figure DEST_PATH_IMAGE068
Description of the circuits
Figure DEST_PATH_IMAGE008AAAAAAAAAAAAAAAAAA
When the pressure reaches the non-pressure limit value and no coincidence occurs, the time is delayedtSecond closing circuit
Figure DEST_PATH_IMAGE004AAAAAAAAAAAAAA
Switch of transformer substation, its reclosing count number
Figure DEST_PATH_IMAGE070
Thereby realizing a circuit
Figure 100002_DEST_PATH_IMAGE002AA
Non-pressure coincidence is realized, and asynchronous switching on with a distributed power supply is avoided;
Figure DEST_PATH_IMAGE072
typically 5% of the rated line voltage can be achieved,tcan be taken as 5 in generals。

Claims (3)

1. A power distribution network line automatic reclosing control method adaptive to distributed power supply access is characterized by comprising the following steps:
(1) establishing a distributed power supply associated line set network topology matrix;
(2) setting a reclosing control word of a distributed power supply associated line set;
(3) determining a reclosing control strategy of a circuit containing a distributed power supply;
the specific steps of establishing the distributed power supply associated line set network topology matrix in the step (1) comprise:
1-1) reading a single line diagram of all lines in the associative set from the production management system, secondiLine circuit
Figure DEST_PATH_IMAGE002
It is shown that,i=1，2，…，p，pthe number of lines in the relevant concentration is;
1-2) each line
Figure DEST_PATH_IMAGE002A
Numbering all distribution automation switches capable of forming ring network operation according to single line diagram pole numbers by taking a transformer substation switch as a starting point, and acquiring real-time position information of the switches;
1-3) each distributed power supply
Figure DEST_PATH_IMAGE004
Marked according to the single line rod number in the access line ring network,j=1，2，…，q，qfor correlating the number of centralized distributed power supplies, the circuit is operated in normal mode
Figure DEST_PATH_IMAGE002AA
The number of distributed power supplies contained is recorded as
Figure DEST_PATH_IMAGE006
；
1-4) connecting all the associated circuits according to the connection relation of the handles of all the circuits in the association set, the on-off state of the switches and the access positions of the distributed power supplies to form the circuits
Figure DEST_PATH_IMAGE002AAA
AssociationCollecting a network topology matrix;
the step (2) of setting the reclosing control word of the distributed power supply associated line set specifically comprises the following steps:
2-1) reading each switch position signal and a transformer substation switch accident signal in the association set network topology matrix;
2-2) if the line
Figure DEST_PATH_IMAGE002AAAA
If the switch is shifted, the step 2-3) is carried out, otherwise, the step 2-1) is returned;
2-3) if the line
Figure DEST_PATH_IMAGE002AAAAA
If no substation switch accident signal exists, the step 2-4 is carried out, otherwise, the step (3) is carried out;
2-4) according to the line
Figure DEST_PATH_IMAGE002AAAAAA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE004A
Switching position signals between the access positions forming a circuit
Figure DEST_PATH_IMAGE002AAAAAAA
To distributed power supply
Figure DEST_PATH_IMAGE004AA
Adjustment vector of the square of the fortune
Figure DEST_PATH_IMAGE008
，i=1，2，…，p，j=1，2，…，qWherein, in the step (A),
Figure DEST_PATH_IMAGE010
，
in the formula (I), the compound is shown in the specification,k=1，2，…，
Figure DEST_PATH_IMAGE012
，
Figure DEST_PATH_IMAGE012A
as a line
Figure DEST_PATH_IMAGE002AAAAAAAA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE014
The number of switches between the access positions,
Figure DEST_PATH_IMAGE016
is composed of
Figure DEST_PATH_IMAGE018
An order row vector;
2-5) on the line
Figure DEST_PATH_IMAGE002AAAAAAAAA
Adjustment vector of the square of the fortune
Figure DEST_PATH_IMAGE016A
Screening out vectors with all elements being 1 to obtain
Figure DEST_PATH_IMAGE020
；
2-6) vectors that will satisfy the conditions of 2-5)
Figure DEST_PATH_IMAGE022
The highest order is recorded as
Figure DEST_PATH_IMAGE024
The corresponding distributed power supply number is
Figure DEST_PATH_IMAGE026
；
2-7) vectors that will satisfy the conditions of 2-5)
Figure DEST_PATH_IMAGE022A
Number to
Figure DEST_PATH_IMAGE028
；
2-8) ifN i Greater than or equal to 1, the line
Figure DEST_PATH_IMAGE002AAAAAAAAAA
Reclosing control word
Figure DEST_PATH_IMAGE030
Setting to 0, withdrawing the reclosing of the line substation switch, if so
Figure DEST_PATH_IMAGE032
Then line
Figure DEST_PATH_IMAGE002AAAAAAAAAAA
Reclosing control word
Figure DEST_PATH_IMAGE030A
And setting the value to be 1, and starting the reclosing of the line substation switch.
2. The method for controlling automatic reclosing of power distribution network lines adapting to distributed power access according to claim 1, wherein the specific step of determining that the control strategy of reclosing of the power distribution network lines comprises the following steps:
3-1) reading switch accident signals of each line transformer substation in the association set;
3-2) if the line
Figure DEST_PATH_IMAGE002AAAAAAAAAAAA
Accident and reclosing control word
Figure DEST_PATH_IMAGE030AA
If the value is 0, entering 3-3), otherwise, returning to 3-1);
3-3) connecting the lines
Figure DEST_PATH_IMAGE002AAAAAAAAAAAAA
Number of reclosure counts
Figure DEST_PATH_IMAGE034
Setting to 0;
3-4) read line
Figure DEST_PATH_IMAGE002AAAAAAAAAAAAAA
From substation switches to distributed power supplies
Figure DEST_PATH_IMAGE026A
Voltage signals connected between pole numbers and on two sides of distribution automatic switch
Figure DEST_PATH_IMAGE036
、
Figure DEST_PATH_IMAGE038
，f=1，2，…，
Figure DEST_PATH_IMAGE024A
；
3-5) if
Figure DEST_PATH_IMAGE040
And is
Figure DEST_PATH_IMAGE042
And is
Figure DEST_PATH_IMAGE044
，f=1，2，…，
Figure DEST_PATH_IMAGE024AA
If so, entering 3-6), otherwise, ending the flow;
in the formula
Figure DEST_PATH_IMAGE046
Determining a limit value for the line without pressure;
3-6) time delaytSecond closing circuit
Figure DEST_PATH_IMAGE002AAAAAAAAAAAAAAA
Switch and circuit of transformer substation
Figure DEST_PATH_IMAGE002AAAAAAAAAAAAAAAA
Number of reclosure counts
Figure DEST_PATH_IMAGE048
；
WhereintThe reclosing time.
3. The method for controlling automatic reclosing of a power distribution network line adaptive to distributed power access according to any one of claims 1-2, wherein the association set is a distributed power association line set, specifically a set consisting of a distributed power access line and a handle contact line thereof in a normal operation mode.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683491A (en) * 2013-11-12 2014-03-26 国家电网公司 Multi-power accessed substation anti-islanding system

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US9733632B2 (en) * 2013-07-16 2017-08-15 GridEdge Networks, Inc. Method and system for distributed generation trip protection using power line carrier signaling
CN103944153A (en) * 2014-04-25 2014-07-23 湖南大学 Self-adaption intelligent protection method for power distribution network applied to high-permeability distributed power supply
CN105470934B (en) * 2015-12-21 2018-07-24 华中科技大学 A kind of power distribution network automatic reclosing control method suitable for distributed generation resource access

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683491A (en) * 2013-11-12 2014-03-26 国家电网公司 Multi-power accessed substation anti-islanding system

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