CN110829419B - Substation selection method of accurate load shedding system based on routing - Google Patents
Substation selection method of accurate load shedding system based on routing Download PDFInfo
- Publication number
- CN110829419B CN110829419B CN201911119746.3A CN201911119746A CN110829419B CN 110829419 B CN110829419 B CN 110829419B CN 201911119746 A CN201911119746 A CN 201911119746A CN 110829419 B CN110829419 B CN 110829419B
- Authority
- CN
- China
- Prior art keywords
- substation
- load
- load control
- accurate
- weighted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010187 selection method Methods 0.000 title claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 abstract description 13
- 235000008694 Humulus lupulus Nutrition 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a substation selection method of an accurate load shedding system based on routing, which comprises the steps of obtaining communication network information of the accurate load shedding system and load control quantity of a load control terminal; calculating the weighted load route hop number of the substation to be selected according to the shortest path criterion; selecting an optimal substation according to the weighted load routing hop number of each substation to be selected; and configuring the selected optimal substation into a precise load shedding system. On the basis of scientific and reasonable accurate load shedding station planning, acquiring information of a communication network of an accurate load control system and load control quantity of a load control terminal, calculating weighted load route hops of a substation to be selected according to a shortest path criterion, selecting an optimal substation according to a criterion of minimum accumulated weighted load route hops, and determining the optimal substation to be selected according to a substation selection result; therefore, the method can scientifically, reasonably and objectively select the substation of the accurate load shedding system; and the method is simple and feasible and has good applicability.
Description
Technical Field
The invention belongs to the field of electrical automation, and particularly relates to a substation selection method of a precise load shedding system based on routing.
Background
With the development of economic technology and the improvement of living standard of people, electric energy becomes essential secondary energy in production and life of people, and brings endless convenience to production and life of people.
The accurate load shedding system is an important subsystem for system protection, and is an important subsystem for rapidly and accurately shedding interruptible loads on a user side by extending a stable control system to a special communication network of a user when a power grid fails, so that the controllable resources during the power grid failure can be effectively expanded, the safety control means of the large power grid can be further enriched and perfected, and the system has the advantages of multiple points, wide range, strong selectivity, small influence on the user and the like, is an important technical means for ensuring the safety of the large power grid in the future, and provides beneficial supplement and assistance for a low-cycle load shedding scheme of the power grid. And an accurate load shedding system is constructed, so that the safe and stable operation of the power grid is facilitated.
Currently, load shedding site selection (including selection of a master station and a slave station for load shedding) of a precise load shedding system is still in a rough stage: the selection of the load shedding station is not carried out according to clear scientific basis, and is determined only by the professional experience of an operator. The load cutting site selection process of the accurate load cutting system is rough, and scientific, reasonable and objective properties are not achieved.
Disclosure of Invention
The invention aims to provide an objective, scientific and reasonable substation selection method of a route-based accurate load shedding system.
The substation selection method of the accurate load shedding system based on the routing, provided by the invention, comprises the following steps:
s1, acquiring communication network information of a precise load cutting system and load control quantity of a load control terminal;
s2, calculating the weighted load route hop number of the substation to be selected according to the shortest path criterion;
s3, selecting an optimal substation according to the weighted load route hop number of each substation to be selected obtained in the step S2;
and S4, configuring the optimal substation selected in the step S3 into the accurate load shedding system, thereby completing the substation selection of the accurate load shedding system.
Step S1, where the obtaining of the communication network information of the accurate load shedding system and the load control quantity of the load control terminals specifically includes obtaining the load quantity governed by each load control terminal, the position information of each load control terminal, and the position information of each substation to be selected.
Step S2, where the weighted load routing hop count of the slave station to be selected is calculated according to the shortest path criterion, specifically, the weighted load routing hop count of the slave station to be selected is calculated by the following steps:
A. acquiring the hop count of each load control terminal relative to each substation to be selected according to the topological structure of the communication network of the accurate load shedding system;
B. calculating the weighted load route hop number of each substation to be selected by adopting the following formula
Wherein i is the number of the substation to be selected; j is the number of the load control terminal; l isjControlling the load of the terminal for the jth load;
and D, the hop count of the jth load control terminal relative to the ith to-be-selected substation obtained in the step A is obtained.
And step S3, selecting the optimal substation according to the weighted load route hop count of each substation to be selected obtained in step S2, specifically, selecting the substation to be selected with the smallest weighted load route hop count as the optimal substation.
The substation selection method of the accurate load shedding system based on the routing, provided by the invention, is characterized in that on the basis of scientific and reasonable accurate load shedding station planning, the information of a communication network of the accurate load control system and the load control quantity of a load control terminal are obtained, the weighted load routing hop count of a substation to be selected is calculated according to the shortest path criterion, an optimal substation is selected according to the minimum accumulated weighted load routing hop count criterion, and the optimal substation to be selected is determined according to the substation selection result; therefore, the method can scientifically, reasonably and objectively select the substation of the accurate load shedding system; and the method is simple and feasible and has good applicability.
Drawings
FIG. 1 is a schematic process flow diagram of the process of the present invention.
Detailed Description
FIG. 1 is a schematic flow chart of the method of the present invention: the substation selection method of the accurate load shedding system based on the routing, provided by the invention, comprises the following steps:
s1, acquiring communication network information of a precise load cutting system and load control quantity of a load control terminal; specifically, the method comprises the steps of acquiring the load amount governed by each load control terminal, the position information of each load control terminal and the position information of each substation to be selected;
in specific implementation, the set-up domain (same city) precise load control communication network comprises H load control terminals (the value range of H is 1-200), comprises I substations to be selected (the value range of I is 1-20), and collects and obtains the load L governed by each load control terminal H (H is more than or equal to 0 and less than or equal to H)j(in MW); the method comprises the steps of collecting and acquiring position information Q of each load control terminal h by taking a city scheduling control center as a coordinate centerh(xh,yh) And the position information Q of each substation to be selected I (I is more than or equal to 0 and less than or equal to I)i(xi,yi) (ii) a Setting the total number of communication nodes in the communication network as O (the value range is 5-70), and marking the serial number of each communication node as u (u is more than or equal to 1 and less than or equal to O);
s2, calculating the weighted load route hop number of the substation to be selected according to the shortest path criterion; specifically, the weighted load routing hop count of the substation to be selected is calculated by adopting the following steps:
A. acquiring the hop count of each load control terminal relative to each substation to be selected according to the topological structure of the communication network of the accurate load shedding system;
B. calculating the weighted load route hop count W of each substation to be selected by adopting the following formulai j：
Wherein i is the number of the substation to be selected; j is the number of the load control terminal; l isjControlling the load of the terminal for the jth load;
b, the hop count of the jth load control terminal relative to the ith to-be-selected substation obtained in the step A is obtained;
s3, selecting an optimal substation according to the weighted load route hop number of each substation to be selected obtained in the step S2; specifically, a substation to be selected with the smallest weighted load routing hop number is selected as an optimal substation;
and S4, configuring the optimal substation selected in the step S3 into the accurate load shedding system, thereby completing the substation selection of the accurate load shedding system.
The process of the invention is further illustrated below with reference to a specific example:
the precise load control communication network comprises 4 load control terminals (the value range of H is 1-200), 3 substations (the value range of I is 1-20), and load L governed by each load control terminal H (H is more than or equal to 0 and less than or equal to H) is acquired and obtainedj(in MW); the method comprises the steps of collecting and acquiring position information Q of each load control terminal h by taking a city scheduling control center as a coordinate centerh(xh,yh) And the position information Q of each substation to be selected I (I is more than or equal to 0 and less than or equal to I)i(xi,yi) (ii) a Setting the total number of communication nodes in the communication network as O7 (the value range is 5-70), and marking the serial number of each communication node as u (u is more than or equal to 1 and less than or equal to O), as shown in tables 1 and 2;
table 1 schematic table of position information of each station
| Type numbering | Terminal device | Sub-station | Node point |
| 1 | (37，32) | (14，42) | (14，42) |
| 2 | (26，64) | (47，52) | (26，64) |
| 3 | (61，77) | (63，17) | (47，52) |
| 4 | (84，37) | / | (61，77) |
| 5 | / | / | (84，37) |
| 6 | / | / | (63，17) |
| 7 | / | / | (37，32) |
TABLE 2 load control quantity (MW) of each load control terminal
| Terminal device | 1 | 2 | 3 | 4 |
| Load(s) | 79.8 | 67.2 | 108.4 | 37.3 |
Then, the accurate load control communication network comprises 4 load control terminals (the value range of H is 1-200) and 3 substations to be selected (the value range of I is 1-20), and the shortest path from the substation to be selected to each terminal is calculated sequentially according to a minimum hop path method; setting the weighted load route hop number of the substation to be selected in the accurate load control communication network as Wi jSetting the hop count of each load control terminal relative to each substation in the communication network according to the topological structure diagram of the accurate load control communication network in the domain (same city)
According to the formula
Calculating to obtain the weighted load route hop count of each substation to be selected to each load control terminal and accumulating;
TABLE 3 hop count between each substation and load control terminal
Schematic table
| Terminal 1 | Terminal 2 | Terminal 3 | Terminal 4 | |
| Substation 1 | 1 | 1 | 3 | 3 |
| Substation 2 | 3 | 1 | 1 | 5 |
| Substation 3 | 1 | 3 | 5 | 1 |
Then, the accurate load control communication network domain comprises 3 to-be-selected substations I, the accumulated weighted load route hop count of each to-be-selected substation I is calculated respectively, and the to-be-selected substation 1 with the smallest weighted load route hop count is selected as an optimal substation;
TABLE 4 cumulative weighted load routing hop count for each substation
| Substation 1 | Substation 2 | Substation 3 | |
| Coefficient of performance | 584.1 | 601.5 | 860.7 |
And finally, configuring the selected substation 1 to be selected into the accurate load shedding system, thereby completing the substation selection of the accurate load shedding system.
When the power grid needs load shedding at a certain time, the accurate load shedding system of the power grid issues a load shedding command and load shedding terminal information thereof to the substation configured according to the invention; the configuration substation carries out terminal load removal operation corresponding to the area under jurisdiction according to the issued load cutting command and the load cutting terminal information thereof.
Claims (3)
1. A substation selection method of a precise load shedding system based on routing comprises the following steps:
s1, acquiring communication network information of a precise load cutting system and load control quantity of a load control terminal;
s2, calculating the weighted load route hop number of the substation to be selected according to the shortest path criterion; specifically, the weighted load routing hop count of the substation to be selected is calculated by adopting the following steps:
A. acquiring the hop count of each load control terminal relative to each substation to be selected according to the topological structure of the communication network of the accurate load shedding system;
B. calculating the weighted load of each substation to be selected by adopting the following formulaRouting hop count Wi j：
Wherein i is the number of the substation to be selected; j is the number of the load control terminal; l isjControlling the load of the terminal for the jth load;
b, the hop count of the jth load control terminal relative to the ith to-be-selected substation obtained in the step A is obtained;
s3, selecting an optimal substation according to the weighted load route hop number of each substation to be selected obtained in the step S2;
and S4, configuring the optimal substation selected in the step S3 into the accurate load shedding system, thereby completing the substation selection of the accurate load shedding system.
2. The substation selection method for the route-based accurate load shedding system according to claim 1, wherein the step S1 is to obtain the communication network information of the accurate load shedding system and the load control quantity of the load control terminal, specifically to obtain the load quantity governed by each load control terminal, the position information of each load control terminal, and the position information of each substation to be selected.
3. The substation selection method for the route-based precision load shedding system according to claim 1 or 2, wherein the step S3 is performed to select an optimal substation according to the weighted load routing hop count of each substation to be selected obtained in the step S2, specifically to select the substation to be selected with the smallest weighted load routing hop count as the optimal substation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911119746.3A CN110829419B (en) | 2019-11-15 | 2019-11-15 | Substation selection method of accurate load shedding system based on routing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911119746.3A CN110829419B (en) | 2019-11-15 | 2019-11-15 | Substation selection method of accurate load shedding system based on routing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110829419A CN110829419A (en) | 2020-02-21 |
| CN110829419B true CN110829419B (en) | 2020-08-18 |
Family
ID=69555714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911119746.3A Active CN110829419B (en) | 2019-11-15 | 2019-11-15 | Substation selection method of accurate load shedding system based on routing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110829419B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687471A (en) * | 2019-02-01 | 2019-04-26 | 国网江苏省电力有限公司 | A kind of urgent accurate control method and system of extensive interruptible load |
| CN110011304A (en) * | 2019-04-15 | 2019-07-12 | 国网山西省电力公司大同供电公司 | A kind of self-optimizing route system in switching group network planning stroke |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100615276B1 (en) * | 2003-08-21 | 2006-08-25 | 삼성에버랜드 주식회사 | adaptive control apparatus of peak power on summer using the internet |
| US20190089331A1 (en) * | 2017-09-15 | 2019-03-21 | Snaptrack, Inc. | Bulk Acoustic Wave Resonator having a Central Feed |
| CN107703926A (en) * | 2017-11-13 | 2018-02-16 | 国网江苏省电力公司电力科学研究院 | A kind of network system protects fast cut back multi-point control time method of testing |
| CN108539750A (en) * | 2018-05-17 | 2018-09-14 | 国网山东省电力公司经济技术研究院 | A kind of accurate load control system and method based on steady control technology |
-
2019
- 2019-11-15 CN CN201911119746.3A patent/CN110829419B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687471A (en) * | 2019-02-01 | 2019-04-26 | 国网江苏省电力有限公司 | A kind of urgent accurate control method and system of extensive interruptible load |
| CN110011304A (en) * | 2019-04-15 | 2019-07-12 | 国网山西省电力公司大同供电公司 | A kind of self-optimizing route system in switching group network planning stroke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110829419A (en) | 2020-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107196801B (en) | Automatic platform district topology identification system | |
| CN110707686A (en) | Transformer area identification method and transformer area line topology construction method | |
| CN108306282B (en) | Power distribution network automatic planning method with power grid diagnosis problem solving as guide | |
| CN103150688A (en) | Power distribution network power cutting method | |
| CN112491050A (en) | Main and distribution network accident recovery processing method based on index set weight | |
| CN103500999B (en) | Low voltage distribution area power supply radius optimization method based on real-time loss | |
| CN109449934B (en) | Transmission network blocking management and control method based on high-voltage distribution network partition reconstruction | |
| CN109002664A (en) | A kind of series transformer insulation system optimization method and system based on finite element | |
| CN108154255A (en) | A kind of implementation method of distribution network users access analysis system | |
| CN111225397A (en) | Enterprise wireless network optimization computer analysis system based on Internet of things | |
| CN102723726A (en) | Method for determining maximal direct current receiving quantity in alternating current receiving system | |
| CN102970163B (en) | Power communication backbone network node upgrade method and system | |
| CN110971492B (en) | RTU (remote terminal Unit) full-network simultaneous section generation method and system considering wide-area measurement time delay | |
| CN107025524A (en) | Consider the apparatus overload aid decision-making method of load power supply reliability requirement | |
| CN105552899B (en) | A kind of method of power system restoration power after calculating is had a power failure on a large scale | |
| CN110829419B (en) | Substation selection method of accurate load shedding system based on routing | |
| CN115622053A (en) | Automatic load modeling method and device for considering distributed power supply | |
| CN108233324A (en) | Electric network model and computational methods based on more power type relay protection setting calculations | |
| CN109871566B (en) | Loop construction method based on power grid topology technology and storage medium | |
| CN104809340A (en) | Method for quickly calculating operating point of multi-end flexible direct-current power transmission system | |
| CN103401233A (en) | Power distribution network contact construction sequence optimization method based on maximum power supply capability | |
| CN110829447B (en) | Substation selection method of accurate load shedding system based on risk degree | |
| CN116826709A (en) | Automatic matching method, device and storage medium for adjustable load resource and scheduling master station model | |
| CN109980630B (en) | Future state network topology model correction method for power generation plan optimization | |
| CN110601208A (en) | Accurate load control method and system based on multi-dimensional load attributes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |