CN104362614A - Static security analysis method of power distribution network - Google Patents
Static security analysis method of power distribution network Download PDFInfo
- Publication number
- CN104362614A CN104362614A CN201410538477.5A CN201410538477A CN104362614A CN 104362614 A CN104362614 A CN 104362614A CN 201410538477 A CN201410538477 A CN 201410538477A CN 104362614 A CN104362614 A CN 104362614A
- Authority
- CN
- China
- Prior art keywords
- power distribution
- distribution network
- load
- static security
- power
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a static security analysis method of a power distribution network. The static security analysis method includes a static security degree analysis, a load loss ratio analysis and a user loss ratio analysis. The static security degree analysis includes that in the case that the power failure occurs to a region of the power distribution network, load is transferred by the power distribution network, power restoration of the lower load, caused by the power failure, is facilitated, after the power restoration of the recoverable region, load rate of a circuit in the network is calculated, and accordingly the static security degree of the power distribution network of the current fault region is acquired; the load loss ratio analysis includes, once a fault occurs to one point on the power distribution network, isolating the fault into a minimal region; and calculating the percentage of the load, lost after the restoration of the fault-free region, of the current total load of the power distribution network. Compared with the traditional power distribution reliability analysis method, the static security analysis method is more scientific and accurate.
Description
Technical field
The present invention relates to a kind of Security Analysis of Distribution Networks method.
Background technology
For distribution network planning and design, the evaluation of the adaptability to changes when breaking down or overhaul generally adopts power supply reliability index, but when calculating power supply reliability, only consider grid structure, and after not considering network reconfiguration, can offside power supply be with to obtain dynamic whole load; And power supply reliability index is generally for this kind of microvariations of power distribution network generation local fault, and high pressure inlet wire fault being caused to this kind of disastrous accident of 10kV busbar fault of the power failure of Duo Zuo transformer station or substation fault or Bulk Supply Substation, then the probability owing to occurring is very little and impact for power supply reliability index is little.
Therefore current power supply reliability analytical method, also has the necessity improved further.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of Security Analysis of Distribution Networks method, analyzes the power of power distribution network power supply capacity with power distribution network static security degree, and science is with accurate more.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of Security Analysis of Distribution Networks method, comprise static security degree analysis module, load loss rate analysis module, user's loss late analysis module, the concrete analysis process of described static security degree analysis module is: when certain region of power distribution network has a power failure, on-load is turned by power distribution network, the lower end load caused recovered owing to having a power failure is powered, after recovery can recover block supply, the load factor of circuit in computing network, is the static security degree of the power distribution network under current failure region; The concrete analysis process of described load loss rate analysis module is: when certain point on power distribution network breaks down, by Fault Isolation by Fault Isolation to Minimum Area, calculate and recover behind non-faulting district or the load that will lose accounts for the percentage of current power distribution network total load; The concrete analysis process of described user's loss late analysis module is: when certain point on network breaks down, to calculate under current accident the ratio that the user lost after by network structure regulation accounts for the total number of users of power distribution network.
Preferably, different static security degree and the power supply capacity relation of power distribution network as follows:
0-0.7 is very safe,
0.7-0.9 safety,
0.9-1.0 is risky,
2-∞ is very dangerous.
The present invention adopts power distribution network static security degree to analyze the power of power distribution network power supply capacity, by the concrete analysis of static security degree analysis module, load loss rate analysis module, user's loss late analysis module, draw the ability of power distribution network continued power, the i.e. strong degree of power distribution network, compared to traditional power supply reliability analytical method, science is with accurate more.
Embodiment
The present invention adopts power distribution network static security degree to analyze the power of power distribution network power supply capacity, the namely ability of power distribution network continued power, i.e. the strong degree of power distribution network.This Security Analysis of Distribution Networks method, comprises static security degree analysis module, load loss rate analysis module, user's loss late analysis module.
Static security degree analysis module, power distribution network static security degree refers to, when certain region of power distribution network has a power failure, on-load is turned by power distribution network, when not considering whether to cause overcurrent, recovery is as much as possible powered due to the lower end load caused had a power failure, after recovery can recover block supply, the load factor of circuit in computing network, this value is as the static security degree of the power distribution network under current failure region.
The electrical network power that different " static security degree " reflects is different, and this value less explanation power distribution network is regardless of under any operational mode, and the possibility of overload is less, and illustrate that the power supply capacity of power distribution network is stronger, occurrence scope is as follows:
The practical significance of S value size description:
0-0.7 is very safe
0.7-0.9 safety
0.9-1.0 is risky
2-∞ is very dangerous.
Load loss rate analysis module, when load loss rate refers to that certain point on power distribution network breaks down, by Fault Isolation by Fault Isolation to Minimum Area, and recover behind non-faulting district as much as possible or the load that will lose accounts for the percentage of current power distribution network total load.In theory, this value is more average better, more on average illustrates that switches all at present on circuit is installed and has all played maximum effect.
R=La/Lt represents the load factor of losing under current false appearance accident;
After Lt represents that hypothetical accident is isolated, do not consider safety factor and whole load total amounts of powering can be maintained;
La represents after the isolation of current accident can the load total amount confessed of safety (electrical network not overload).
User's loss late analysis module, refer to that certain point on network is when breaking down, the user lost afterwards by network structure regulation (non-faulting section is considering that electrical network only restores electricity under loading condiction) under current accident accounts for the ratio of the total number of users of power distribution network.What user's loss late and load loss rate and feeder line independence island information were added up in case of a fault is not exclusively identical index, because some island possible can cause other island also to have a power failure when fault, the front end fault of such as radiation network will cause all ends of whole circuit all to have a power failure, and when feeder line front end fault outage, the load of actual power failure may be whole circuit.
In addition, power distribution network is the network of an open loop operation, when building, target realizes hand in hand multi-joint network, in theory one independently region have more contact paths and other feeder line to achieve contact, just there are more abilities turned for load, and in the middle of reality, contact number can not be unlimited many, whole power distribution network is also that all isolated areas are more average better, minimum requirements is that all isolated areas all have 1 contact at least, because power distribution network is requirement closed loop design open loop operation, namely must be " unification platform switch when operating, a disconnected switch ", this index K (N – 1+1) represents, k represents the possibility number that each region can be transferred.
Claims (2)
1. a Security Analysis of Distribution Networks method, it is characterized in that: comprise static security degree analysis module, load loss rate analysis module, user's loss late analysis module, the concrete analysis process of described static security degree analysis module is: when certain region of power distribution network has a power failure, on-load is turned by power distribution network, the lower end load caused recovered owing to having a power failure is powered, after recovery can recover block supply, the load factor of circuit in computing network, is the static security degree of the power distribution network under current failure region; The concrete analysis process of described load loss rate analysis module is: when certain point on power distribution network breaks down, by Fault Isolation by Fault Isolation to Minimum Area, calculate and recover behind non-faulting district or the load that will lose accounts for the percentage of current power distribution network total load; The concrete analysis process of described user's loss late analysis module is: when certain point on network breaks down, to calculate under current accident the ratio that the user lost after by network structure regulation accounts for the total number of users of power distribution network.
2. a kind of Security Analysis of Distribution Networks method according to claim 1, is characterized in that: different static security degree and the power supply capacity relation of power distribution network as follows:
0-0.7 is very safe,
0.7-0.9 safety,
0.9-1.0 is risky,
2-∞ is very dangerous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538477.5A CN104362614A (en) | 2014-10-13 | 2014-10-13 | Static security analysis method of power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538477.5A CN104362614A (en) | 2014-10-13 | 2014-10-13 | Static security analysis method of power distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104362614A true CN104362614A (en) | 2015-02-18 |
Family
ID=52529852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410538477.5A Pending CN104362614A (en) | 2014-10-13 | 2014-10-13 | Static security analysis method of power distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104362614A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711845A (en) * | 2018-04-25 | 2018-10-26 | 东阳市光明电力建设有限公司 | A kind of analysis method based on distribution network structure |
| CN109193594A (en) * | 2018-11-12 | 2019-01-11 | 上海科梁信息工程股份有限公司 | Determine method, apparatus, server and the storage medium of electric power safety protection class |
| CN111697569A (en) * | 2020-05-22 | 2020-09-22 | 国网山东省电力公司德州供电公司 | Comprehensive analysis system and method for fault self-healing capability of distribution line |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259261A (en) * | 2013-04-22 | 2013-08-21 | 湖南大学 | Load distribution method for multi-line power restoration after power distribution network fault |
| CN103400302A (en) * | 2013-07-01 | 2013-11-20 | 国家电网公司 | Risk perception and early warning method and system for cascading failures of wind power base |
| CN103559654A (en) * | 2013-11-08 | 2014-02-05 | 国家电网公司 | Comprehensive analysis system and method of power distribution network |
| CN104092210A (en) * | 2014-07-14 | 2014-10-08 | 国家电网公司 | Online static security analysis method with N-2 opening rapid scanning function |
-
2014
- 2014-10-13 CN CN201410538477.5A patent/CN104362614A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259261A (en) * | 2013-04-22 | 2013-08-21 | 湖南大学 | Load distribution method for multi-line power restoration after power distribution network fault |
| CN103400302A (en) * | 2013-07-01 | 2013-11-20 | 国家电网公司 | Risk perception and early warning method and system for cascading failures of wind power base |
| CN103559654A (en) * | 2013-11-08 | 2014-02-05 | 国家电网公司 | Comprehensive analysis system and method of power distribution network |
| CN104092210A (en) * | 2014-07-14 | 2014-10-08 | 国家电网公司 | Online static security analysis method with N-2 opening rapid scanning function |
Non-Patent Citations (1)
| Title |
|---|
| 夏叶等: "用户侧互动模式下发用电一体化静态安全校核", 《电力系统自动化》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711845A (en) * | 2018-04-25 | 2018-10-26 | 东阳市光明电力建设有限公司 | A kind of analysis method based on distribution network structure |
| CN109193594A (en) * | 2018-11-12 | 2019-01-11 | 上海科梁信息工程股份有限公司 | Determine method, apparatus, server and the storage medium of electric power safety protection class |
| CN111697569A (en) * | 2020-05-22 | 2020-09-22 | 国网山东省电力公司德州供电公司 | Comprehensive analysis system and method for fault self-healing capability of distribution line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954874B (en) | Whole-network-and-local-model-combined transformer substation running status analyzing method | |
| CN103022994B (en) | Method for achieving fault isolation and recovery of power distribution network with permeability distribution type power supply | |
| CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
| CN102629755B (en) | Power transmission line backup protection method based on wide area information | |
| Liu | Analysis of Brazilian blackout on March 21st, 2018 and revelations to security for Hunan Grid | |
| CN106684822A (en) | Transformer dead-zone fault protection method and breaker failure protection method | |
| CN204481568U (en) | A kind of power plant is standby throws protective device | |
| CN104362614A (en) | Static security analysis method of power distribution network | |
| CN102868227B (en) | Medium voltage distribution-network looped-network switching operation method | |
| CN113572193A (en) | Distributed power supply island operation state identification method, fusion terminal and system | |
| CN202797910U (en) | Standby self-start blocking device in 10kV power distribution room of intelligent substation | |
| CN101707397A (en) | Auto-switch-on system on basis of power grid dispatching and implementation method thereof | |
| CN208241399U (en) | Intelligent high-low-voltage complete set of equipments with the alternative control system of self-powered DC control | |
| CN207184025U (en) | Breaker emergency trip control circuit after dc source all disappears | |
| CN203481822U (en) | Closed loop power supply model of medium voltage 10 kilovolt power distribution network | |
| CN102694419A (en) | Management system for integrated test and control | |
| CN202535046U (en) | Microcomputer monitoring and protection device for mine-used high-voltage switch | |
| CN104734117B (en) | A kind of breaker fail protection method of substation | |
| CN204462283U (en) | A kind of DC feeder Graded coordination proving installation | |
| CN203674563U (en) | TN dual power system transformer ground current detection device | |
| CN202663192U (en) | Detection and control integrated user boundary switch | |
| CN202696129U (en) | Bus bar differential structure of booster station in electric one-through connection mode | |
| Yinger | Self-healing circuits at southern California Edison | |
| CN106169737B (en) | High current starts the simple bus protection relay protecting method of 500kV substation 35kV | |
| CN204441871U (en) | A kind of portable route protection dolly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |