CN109784612A - Match integrated area power grid on-line intelligence analysis decision method based on ground - Google Patents
Match integrated area power grid on-line intelligence analysis decision method based on ground Download PDFInfo
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- CN109784612A CN109784612A CN201811415531.1A CN201811415531A CN109784612A CN 109784612 A CN109784612 A CN 109784612A CN 201811415531 A CN201811415531 A CN 201811415531A CN 109784612 A CN109784612 A CN 109784612A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 31
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- 230000008569 process Effects 0.000 claims description 10
- 230000035945 sensitivity Effects 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 5
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- 238000010937 topological data analysis Methods 0.000 claims description 4
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- 230000008447 perception Effects 0.000 abstract description 3
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- 238000004590 computer program Methods 0.000 description 7
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Abstract
The invention discloses one kind to match integrated area power grid on-line intelligence analysis decision method with being based on, power grid risk scanning has been carried out to power grid Real-time Power Flow state, forecast failure collection and distribution responsible consumer power supply point, and the indicating risks such as out-of-limit, the heavily loaded and power loss of equipment are provided, the aid decision suggestion for reducing current electric grid risk is then provided for out-of-limit and power loss.The security and stability that the present invention can be achieved during monitoring operation of power networks in real time provides aid decision suggestion to existing safety and stability problem, effectively promotes the perception and prevention and control ability of area power grid operation risk.
Description
Technical field
The invention belongs to dispatching automation of electric power systems technical fields, and in particular to one kind matches integrated area based on ground
Powernet intellectual analysis decision-making technique.
Background technique
With the continuous development that smart grid is built, power grid is realized by extra-high voltage AC circuit and is interconnected.The complex web
The formation of network, on the one hand improves the operational efficiency of system, also increases the uncertainty of system operation but then, so that
Local system disturbance involves that range is wider, and systematic failures consequence is also more serious.Area power grid is often radiation network and looped network simultaneously
It deposits, and voltage class is more, load broad categories, significance level is different, and the degree of reliability of network various pieces differs greatly.Though
Right power supply reliability is continuously improved, but local devices failure still influences whether economy, life, the public security, traffic in entire city
Transport, power grid many aspects such as stabilization, also result in large area blackout under extreme case.If only dependent on scheduling
Knowledge, experience and the reaction speed of operations staff regulates and controls, and has very big risk.
It needs to provide a kind of on-line intelligence analysis and decision system thus, management and running personnel is assisted quickly to find operation of power networks
Potential risk provides the aid decision suggestion for reducing current electric grid risk, effectively inhibits the generation and expansion of accident, improves and supplies
Electric reliability.
Summary of the invention
It is an object of the invention to, method of operation complexity relatively weak for area power grid structure, easily cause regional electricity
Net unstability and the case where lead to the risk of large-area power-cuts, propose based on analyzed with integrated area power grid on-line intelligence
Decision-making technique realizes that power grid hidden danger is checked in real time, eliminates and artificially judges blind spot, more comprehensively promotes the reliable of operation of power networks
Property.
In order to solve the above technical problems, the present invention provides one kind to divide with integrated area power grid on-line intelligence with being based on
Analyse decision-making technique, characterized in that the following steps are included:
S1 monitors that the power flow changing of each equipment in power grid judges whether each equipment can get over according to the trend limit value of each equipment
Limit or heavy duty；
S2 carries out fault simulation to power grid according to preset fault set, judges whether that grid disconnection, Loss of power failure can occur, together
When calculate the power flow changing of each equipment, it is out-of-limit or heavily loaded to judge whether each equipment can occur；
S3 carries out power supply point follow-up analysis to the distribution responsible consumer of setting, power supply point in major network 220kV plant stand is obtained, to master
It nets power supply point in 220kV plant stand and carries out N-1 analysis, whether will lead to Loss of power failure after checking power supply point failure and equipment is out-of-limit
Or heavy duty；
S4 provides the aid decision suggestion for reducing current electric grid risk when judging to occur Loss of power failure, out-of-limit, when overloaded:
For out-of-limit, the sensitivity information of out-of-limit equipment is calculated, is adjusted according to sensitivity information out-of-limit to eliminate or alleviate；
For power loss, available turn of power supply source point is found.
Further, Loss of power failure includes responsible consumer power failure, load power loss and plant stand power loss.
Further, include: to the detailed process of the distribution responsible consumer progress power supply point follow-up analysis of setting
Line segment end point analysis is exchanged from plant stand highest voltage level where the responsible consumer of setting, is obtained by exchange line segment endpoint
Opposite side power plant and substation's information continues through opposite side plant stand and repeats the above process, until finding major network 220kV above high pressure ring.
Further, during exchanging line segment end point analysis, the exchange line segment endpoint being negative only is flowed into active power
Continue to traverse.
Further, finding the available detailed process for turning power supply source point includes:
It searches for nearest stand-by heat to the periphery from power loss and switchs the spare turn of power supply source point restored as power loss area；Then it simulates
The stand-by heat switch searched closes, and carries out topological analysis；If can originally restore to supply at power loss after stand-by heat switch closes
Electricity, then it is assumed that this stand-by heat switch turns power supply source point to be available.
Further, search out available when turning power supply source point, also progress trend verification, calculate turn whether to will cause after supplying it is new
Equipment it is out-of-limit or heavily loaded, it is out-of-limit or heavily loaded if there is new equipment, then reselect turn power supply a source point.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: monitoring operation of power networks in real time can be achieved in the present invention
Security and stability in the process provides aid decision suggestion to existing safety and stability problem, effectively promotes area power grid operation
The perception and prevention and control ability of risk.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, one kind of the invention, which is based on ground, matches integrated area power grid on-line intelligence analysis decision method,
Including following procedure:
S1 monitors that the power flow changing of each equipment in power grid judges whether each equipment can get over according to the trend limit value of each equipment
Limit or heavy duty.
Current electric grid model and real-time digital & analog signal data are obtained, monitor the power flow changing feelings of each equipment in power grid
Condition provides that equipment is out-of-limit or heavily loaded prompt according to the limit value of each equipment.
Out-of-limit i.e. the active and reactive of equipment, voltage, electric current are more than the limit value of equipment.Heavy duty be equipment it is active and reactive,
Voltage, electric current reach equipment limit value certain percentage.These limit values are inputted in Dispatching monitor and control system database, are not required to
In addition it to provide.
S2 carries out fault simulation to power grid according to preset fault set, judges whether that Loss of power failure can occur, calculate simultaneously
It is out-of-limit or heavily loaded to judge whether each equipment can occur for the power flow changing of each equipment.
The fault set that static security analysis application settings are good in major network advanced applied software is read in, forecast failure mould is carried out
It is quasi-, obtain which specific failure causes grid disconnection, responsible consumer power failure, load power loss, plant stand power loss by topological analysis.
Power failure responsible consumer, power loss load caused by corresponding failure, power loss plant stand are provided simultaneously.Then Load flow calculation is carried out, checks event
Whether will cause after barrier out-of-limit or heavily loaded.
S3 carries out power supply point follow-up analysis to the distribution responsible consumer of setting, obtains power supply point in major network 220kV plant stand,
N-1 analysis is carried out to power supply point in major network 220kV plant stand, whether will lead to Loss of power failure and equipment after checking power supply point failure
It is out-of-limit or heavily loaded.
Power supply point follow-up analysis is carried out to the distribution responsible consumer of setting, higher level's power supply point is traced step by step, from setting
Plant stand highest voltage level exchanges line segment end point analysis where responsible consumer, obtains opposite side plant stand letter by exchange line segment endpoint
Breath, continues through opposite side plant stand and repeats the above process, until finding major network 220kV above high pressure ring.In exchange line segment
During end point analysis, the exchange line segment endpoint being negative only is flowed into active power and continues to traverse.
N-1 is carried out to the route (i.e. power supply line) that line segment endpoint active power is negative is exchanged in the 220kV plant stand found
Analysis, check after the line fault of power supply whether will lead to grid disconnection, responsible consumer has a power failure, load subtracts confession, plant stand power loss with
And equipment is out-of-limit or heavily loaded.
S4 reduces the aid decision suggestion of current electric grid risk according to equipment is out-of-limit and Loss of power failure provides.
(1) for out-of-limit equipment, advanced applied software medium sensitivity computing module is called, provides the correlation spirit of out-of-limit equipment
Sensitivity information, regulation personnel can be adjusted according to sensitivity information, to eliminate or alleviate out-of-limit.
(2) it for power loss, including responsible consumer power failure, load power loss, entire plant stand power loss, is sought using rapid topology technology
Look for it is available turn a power supply source point, while carrying out trend verification, calculate that turn whether to will cause new equipment after supplying out-of-limit or heavily loaded, if
It is out-of-limit or heavily loaded that there are new equipment, then reselects and turn power supply source point, and final determine turns power supply source point.
Turning power supply source point search, steps are as follows: it is extensive as power loss area to search for nearest stand-by heat switch to the periphery from power loss
Spare turn of multiple power supply source point.The stand-by heat that simulation search arrives, which switchs, to be closed, and carries out topological analysis.If stand-by heat switch closes
Later, it can restore electricity originally at power loss, then it is assumed that this stand-by heat switch turns power supply source point to be available.
Trend verification step is as follows: simulating after available stand-by heat switch closes, carries out Load flow calculation, calculate and turn to supply it
Afterwards, if having before relatively simulating it is new out-of-limit perhaps heavily loaded if there is new out-of-limit or heavily loaded, then reselect can be used it is hot standby
It is calculated with switch simulation.
It is that the present invention reaches the utility model has the advantages that
Power grid Real-time Power Flow state, forecast failure are directed to integrated area power grid on-line intelligence analysis and decision system based on ground
Collection and distribution responsible consumer power supply point have carried out power grid risk scanning, and provide the risks such as out-of-limit, the heavily loaded and power loss of equipment
Then prompt provides the aid decision suggestion for reducing current electric grid risk for out-of-limit and power loss.Prison in real time can be achieved in the present invention
Aid decision suggestion is provided to existing safety and stability problem depending on the security and stability during operation of power networks, effectively promotes ground
The perception and prevention and control ability of area's power networks risk.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. matching integrated area power grid on-line intelligence analysis decision method based on ground, characterized in that the following steps are included:
S1 monitors that the power flow changing of each equipment in power grid judges whether each equipment can get over according to the trend limit value of each equipment
Limit or heavy duty；
S2 carries out fault simulation to power grid according to preset fault set, judges whether that grid disconnection, Loss of power failure can occur, together
When calculate the power flow changing of each equipment, it is out-of-limit or heavily loaded to judge whether each equipment can occur；
S3 carries out power supply point follow-up analysis to the distribution responsible consumer of setting, power supply point in major network 220kV plant stand is obtained, to master
It nets power supply point in 220kV plant stand and carries out N-1 analysis, whether will lead to Loss of power failure after checking power supply point failure and equipment is out-of-limit
Or heavy duty；
S4 provides the aid decision suggestion for reducing current electric grid risk when judging to occur Loss of power failure, out-of-limit, when overloaded:
For out-of-limit, the sensitivity information of out-of-limit equipment is calculated, is adjusted according to sensitivity information out-of-limit to eliminate or alleviate；
For power loss, available turn of power supply source point is found.
2. according to claim 1 match integrated area power grid on-line intelligence analysis decision method, feature based on ground
It is that Loss of power failure includes responsible consumer power failure, load power loss and plant stand power loss.
3. according to claim 1 match integrated area power grid on-line intelligence analysis decision method, feature based on ground
It is that the detailed process for carrying out power supply point follow-up analysis to the distribution responsible consumer of setting includes:
Line segment end point analysis is exchanged from plant stand highest voltage level where the responsible consumer of setting, is obtained by exchange line segment endpoint
Opposite side power plant and substation's information continues through opposite side plant stand and repeats the above process, until finding major network 220kV above high pressure ring.
4. according to claim 3 match integrated area power grid on-line intelligence analysis decision method, feature based on ground
It is during exchanging line segment end point analysis, the exchange line segment endpoint being negative only to be flowed into active power and continues to traverse.
5. according to claim 1 match integrated area power grid on-line intelligence analysis decision method, feature based on ground
It is to find the available detailed process for turning power supply source point to include:
It searches for nearest stand-by heat to the periphery from power loss and switchs the spare turn of power supply source point restored as power loss area；Then it simulates
The stand-by heat switch searched closes, and carries out topological analysis；If can originally restore to supply at power loss after stand-by heat switch closes
Electricity, then it is assumed that this stand-by heat switch turns power supply source point to be available.
6. according to claim 1 match integrated area power grid on-line intelligence analysis decision method, feature based on ground
It is to search out available when turning power supply source point, also progress trend verification, calculates that turn whether to will cause new equipment after supplying out-of-limit or again
It carries, it is out-of-limit or heavily loaded if there is new equipment, then it reselects and turns power supply source point.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768114A (en) * | 2020-07-03 | 2020-10-13 | 广东电网有限责任公司 | Method for real-time overall process control of batch transfer tasks of distribution network feeder lines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916431A (en) * | 2012-09-20 | 2013-02-06 | 中国电力科学研究院 | Assisted decision making method for load transfer in regional power grid |
| CN105913148A (en) * | 2016-04-11 | 2016-08-31 | 国家电网公司 | On-line platform-based power grid accident pre-arranged plan automatic realization method |
| CN106067081A (en) * | 2016-05-24 | 2016-11-02 | 国家电网公司 | The ground integrated associating methods of risk assessment of a kind of province |
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2018
- 2018-11-26 CN CN201811415531.1A patent/CN109784612A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916431A (en) * | 2012-09-20 | 2013-02-06 | 中国电力科学研究院 | Assisted decision making method for load transfer in regional power grid |
| CN105913148A (en) * | 2016-04-11 | 2016-08-31 | 国家电网公司 | On-line platform-based power grid accident pre-arranged plan automatic realization method |
| CN106067081A (en) * | 2016-05-24 | 2016-11-02 | 国家电网公司 | The ground integrated associating methods of risk assessment of a kind of province |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768114A (en) * | 2020-07-03 | 2020-10-13 | 广东电网有限责任公司 | Method for real-time overall process control of batch transfer tasks of distribution network feeder lines |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190619 Address after: 750011 No. 222 Xinchang East Road, Yinchuan City, Ningxia Hui Autonomous Region Applicant after: State Grid Ningxia Electric Power Co. Address before: No. 19, Jiangning District, Jiangning District, Nanjing, Jiangsu Applicant before: NARI TECHNOLOGY Co.,Ltd. Applicant before: NARI NANJING CONTROL SYSTEM Co.,Ltd. Applicant before: NARI Group Corp. Applicant before: State Grid Ningxia Electric Power Co. |
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Application publication date: 20190521 |
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