CN105184508A - Harmonic measuring point optimal allocation method for distribution network - Google Patents
Harmonic measuring point optimal allocation method for distribution network Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a harmonic measuring point optimal allocation method for a distribution network. The method comprises the following steps: 10) network topology and load-side information are acquired, and a network topology database and a load-side information database are built; 20) information check is carried out, if integrity check requirements are met, a step 30 is carried out, or otherwise, the step 10 is returned; 30) zero injection nodes are judged, and based on the load-side information in the load-side information database, whether the zero injection nodes exist in nodes is judged; 40) preliminary equivalent treatment on the network is carried out, and according to an observability rule, equivalent treatment is carried out on topology of the distribution network, and the topology of the distribution network is simplified; and 50) measuring points are optimally allocated, and according to a measuring point allocation equivalent rule, the system is optimally allocated, and an allocation scheme with the fewest measuring points is acquired. The allocation method can carry out harmonic measuring point optimal allocation on the multi-feeder line distribution network, and system observability is realized by using the minimal measuring allocation points.
Description
Technical field
The invention belongs to electric energy quality monitoring technical field, specifically, relate to a kind of harmonic content measuring point Optimal Configuration Method for power distribution network.
Background technology
At present, along with high-power electric and electronic technology develops rapidly and a large amount of nonlinear load, as access power distribution networks such as fairing, electric arc furnaces, converter plant and household electrical appliance, the harmonic pollution in power distribution network has become day by day serious.Because it brings tremendous influence to power supply enterprise's safe and stable operation and for the economic benefit of electricity consumption both sides, power supply department and power consumer questions of common interest are become.
Wide area measurement technology is the Detecting Power Harmonics of power distribution network, the harmonic wave distribution situation of harmonic source location and whole electrical network both provides important data foundation.Along with the increase of modern interconnected electric power system scale, synchronous measure equipment is also just be put to use, and with regard to individual equipment, cost is not very high, but to install a large amount of measurement equipments, this can cause measurement equipment and installation work cost too high.At present and even in significant period of time, can not all install harmonic wave measuring equipment at all nodes of system.
Consider that the grid structure of power distribution network mostly is looped network, but open loop operation under normal circumstances, in radial pattern tree network, and the many segmentations of multiple-limb, in electrical network, the relative branch of each node is different.Therefore, configuration is optimized to the harmonic content measuring point of power distribution network and seems particularly important.At present, electric company only pays close attention to power distribution network bus harmonic voltage, and ignores its concrete harmonic wave distribution, and which load bus harmonic pollution comes to cause it to differentiate.Along with development and the access of a large amount of distributed power source of power distribution network, the harmonic pollution of power distribution network will receive much concern.Consider the complexity of power distribution network and the measurement capability of equipment, by suitable Observability Analysis, by means of less measure configuration point, make the completely considerable of electrical network, the development of the harmonic state estimation technology of power distribution network is greatly promoted from economic and practical angle, for the harmonic wave distribution understood fully in power distribution network or harmonic wave state, and then the necessary harmonic wave of measure to the user in power distribution network is taked to suppress and improvement has great importance.
Summary of the invention
Technical matters: technical matters to be solved by this invention is: a kind of harmonic content measuring point Optimal Configuration Method for power distribution network is provided, this collocation method can carry out distributing rationally of harmonic content measuring point to the power distribution network of many feeder lines, utilizes minimum measure configuration point to realize system considerable.
Technical scheme: for solving the problems of the technologies described above, the embodiment of the present invention adopts a kind of harmonic content measuring point Optimal Configuration Method for power distribution network, and the method comprises the following steps:
Step 10) obtain network topology and load side information, build network topology database and load side information database;
Step 20) carry out information checking: the step 10 to described) network topology that obtains and load side information carries out integrity degree verification, if meet integrity degree verification requirement, then enters step 30); Otherwise, return step 10), obtaining information again;
Step 30) differentiate that zero injects node: based on the load side information of described load side information database, differentiate whether node has zero injection node;
Step 40) carry out the preliminary equivalent process of network: based on step 30) differentiation result, according to ornamental rule, equivalent process is carried out to power distribution network topology, simplify power distribution network topology;
Step 50) distribute gauge point rationally: based on described step 40) preliminary equivalent process result, according to gauge point configuration equivalence principle, configuration is optimized to system, obtains the minimum allocation plan of gauge point.
As preference, described step 10) specifically comprise:
Step 101) according to the electric connecting mode between node space layout each in power distribution network and node, determine the network topology of electrical network, and by network topology stored in database, form network topology database;
Step 102) obtain information on load that node connects in power distribution network, determine whether each node is connected to load, and the load type that connects, then whether node is connected to load with a load type information that connects successively stored in database, formation load side information database.
As preference, described step 20) in, the process of carrying out integrity degree verification is: differentiate whether network topology database comprises the connection in power distribution network between all nodes and all nodes, and differentiate whether load side information database comprises information on load that all nodes connect, if two databases all include all nodal informations in power distribution network, then meet integrity degree requirement; Otherwise do not meet integrity degree requirement.
As preference, described step 30) specifically comprise:
Step 301) to the node in load side information database, distinguish node and the on-load node of not on-load, judge that the node of not on-load is as zero injection node;
Step 302) based on step 301) result of determination, according to on-load node connect the situation of load, by the on-load node in load side information database, be divided into the node of band linear load node and uncertain load type, judge that band linear load node is as zero injection node, is considered as harmonic source node by the node of uncertain load type;
Step 303) upgrade load side information database: by step 302) each node of judging adds load side information database as zero injection node or harmonic source nodal information.
As preference, described step 40) specifically comprise: based on step 30) differentiation result, according to the ornamental rule of power distribution network, the degree of association in deletion system be 1 and the degree of association be 2 zero inject node, and two nodes be connected with the degree of association node that is 2 are directly connected, preliminary equivalent process is carried out to power distribution network topology, and according to preliminary equivalent process result, upgrades network topology database.
As preference, described step 50) specifically comprise:
Step 501) preliminary gauge point configuration is carried out to each bar feeder line in power distribution network, from feeder line distalmost end, a collocation point makes two neighbors and this node considerable;
Step 502) based on step 501) preliminary configuration, the feeder line root node PCC degree of association being greater than to 2 carries out gauge point configuration;
Step 503) to step 502) distribute root node rationally after the feeder line structure situation that occurs, return step 501), until complete the gauge point configuration of whole network.
As preference, described step 502) specifically comprise: set a degree of association as the harmonic source node of N, after preliminary configuration, this harmonic source node N-1 bar feeder line obtains gauge point configuration, and the number of branches between defined amount measuring point and feeder line root node is distance between the two; After preliminary configuration, the distance between gauge point and feeder line root node is 1,2 and 3 three kind of situation, and the different configuring conditions that N-1 bar feeder line occurs have
kind, be expressed as by range coordinate:
In formula, columns is N-1, and every a line represents a kind of collocation method, each element representation N-1 bar feeder line on this row after preliminary configuration, the distance of measure configuration point and PCC;
The feeder line root node degree of association being greater than to 2 is that harmonic source injects node, and optimal configuration method capable is:
A) there is the element of 3 in range coordinate, optimal configuration method capable is PCC point is actual measure configuration point;
B) in range coordinate, element is all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point;
C) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point;
The feeder line root node degree of association being greater than to 2 is zero injection node, and optimal configuration method capable is:
A) in range coordinate exist two and be above 3 element, optimal configuration method capable is PCC point is actual measure configuration point;
B) do not exist in range coordinate 3 element and at least exist one be the element of 1, optimal configuration method capable is PCC point is equivalent measure configuration point;
C) only have an element to be 3 in range coordinate, all the other elements are all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association;
D) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association.
Beneficial effect: compared with prior art, the present invention has following beneficial effect:
Gauge point collocation method of the present invention is mainly for the Radiation power distribution network in electric system, and what can realize measuring power distribution network distributes rationally, utilizes minimum gauge point to realize the system of power distribution network considerable.Measure configuration scheme can ensure the data demand analyzed for Distribution Network Harmonics, also reduces the economic input in Practical Project.Power distribution network compared to power transmission network, itself and load side close together, the acquisition that load side information can be clearer and more definite.The present invention makes full use of the discriminant information of load side, greatly reduces unnecessary redundancy and measures, improve the utilization ratio of each measure configuration point.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the embodiment of the present invention;
Fig. 2 is that in the embodiment of the present invention, the degree of association is the zero injection node simplification process of 1;
Fig. 3 is that in the embodiment of the present invention, the degree of association is the zero injection node simplification process of 2;
Fig. 4 is that in the embodiment of the present invention, N bar feeder system distance represents schematic diagram;
Fig. 5 is embodiment of the present invention IEEE-33 node system interior joint information on load figure;
Fig. 6 is that the system of the embodiment of the present invention simplifies isoboles;
Fig. 7 is the system configuration result figure of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As shown in Figure 1, a kind of harmonic content measuring point Optimal Configuration Method for power distribution network that the embodiment of the present invention provides, the method comprises the following steps:
Step 10) obtain network topology and load side information, build network topology database and load side information database.
Step 10) specifically comprise:
Step 101) according to the electric connecting mode between node space layout each in power distribution network and node, determine the network topology of electrical network, and by network topology stored in database, form network topology database;
Step 102) obtain information on load that node connects in power distribution network, determine whether each node is connected to load, and the load type that connects, then whether node is connected to load with a load type information that connects successively stored in database, formation load side information database.
Step 20) carry out information checking: the step 10 to described) network topology that obtains and load side information carries out integrity degree verification, if meet integrity degree verification requirement, then enters step 30); Otherwise, return step 10), obtaining information again.
In step 20) in, the process of carrying out integrity degree verification is: differentiate whether network topology database comprises the connection in power distribution network between all nodes and all nodes, and differentiates whether load side information database comprises all nodes and connect information on load.If network topology database and load side information database two databases all include all nodal informations in power distribution network, then meet integrity degree requirement; Otherwise do not meet integrity degree requirement.
Step 30) differentiate that zero injects node: based on the load side information of described load side information database, differentiate whether node has zero injection node.Step 30) specifically comprise:
Step 301) to the node in load side information database, distinguish node and the on-load node of not on-load, judge that the node of not on-load is as zero injection node.In power distribution network, part of nodes is the distribution box of power distribution network, switch cubicle node, and its node plays branch's effect of circuit, does not in fact have load to access, this category node is considered as the node of not on-load, be judged to be zero injection node.
Step 302) based on step 301) result of determination, according to on-load node connect the situation of load, by the on-load node in load side information database, be divided into the node of band linear load node and uncertain load type, judge that band linear load node is as zero injection node, is considered as harmonic source node by the node of uncertain load type.According to load type that node connects, generally as generator place node and electric company determine the node being with linear load, be considered as zero injection node, all the other nodes being connected to Large Copacity nonlinear industrial load are considered as harmonic source node.
Step 303) upgrade load side information database: by step 302) each node of judging adds load side information database as zero injection node or harmonic source nodal information.
Step 40) carry out the preliminary equivalent process of network: based on step 30) differentiation result, according to ornamental rule, equivalent process is carried out to power distribution network topology, simplify power distribution network topology.
Step 40) specifically comprise: based on step 30) differentiation result, according to the ornamental rule of power distribution network, the degree of association in deletion system be 1 and the degree of association be 2 zero inject node, and two nodes be connected with the degree of association node that is 2 are directly connected, preliminary equivalent process is carried out to power distribution network topology, and according to preliminary equivalent process result, upgrade network topology database.The degree of association refers in a network, and the degree of association of a node is the sum that there is the node that branch road is connected with this node.
When carrying out the preliminary equivalent process of network:
(1) maybe can be calculated by other voltage phasor, electric current phasor in system if the voltage phasor of power distribution network interior joint can be directly measured, just claim this node to be Observable.Rule as follows can be obtained according to above-mentioned definition:
Rule 1: if node f is configured with measurement, then the voltage phasor of this node can be directly measured, then node f is considerable;
Rule 2: if node f is configured with measurement, then the voltage phasor of this node and the electric current phasor of all branch roads that is connected with this node also can be directly measured.Therefore, can calculate the voltage phasor of the adjacent node of node f, the adjacent node of node f is also considerable;
Rule 3: if node f is zero injection node, its adjacent node number is N, as long as this N+1 node has N number of node considerable, then just can calculate the voltage phasor of that remaining node according to Ohm law and Kirchhoff's law, then this N+1 node is all considerable;
Rule 4: if the zero injection node measured without configuration, branch current only the unknown of its associated branch, then can obtain the branch current of this branch road according to KCL equation.
(2), according to the ornamental rule 3 of above-mentioned node, before in power distribution network, configuration measures, need first to carry out equivalent process to kind of the zero injection node of two in system.As shown in Figure 2, be the zero injection node of 1 for the degree of association, it directly can be deleted, as long as A node is considerable, B node is then considerable, then only need ensure that A node is considerable.As shown in Figure 3, be the zero injection node of 2 for the degree of association, it directly can be deleted, be directly connected by its neighbors, if A or C be wherein any one Joint Enterprise PMU, other two node is all considerable; If A and C node is considerable, according to ornamental rule 3, its zero injection Node B is also considerable.
(3) inject node for delete zero, the connection in network topology database between this node and connected node thereof is changed accordingly.
Step 50) distribute gauge point rationally: based on described step 40) preliminary equivalent process result, according to gauge point configuration equivalence principle, configuration is optimized to system, obtains the minimum allocation plan of gauge point.
Step 50) specifically comprise:
Step 501) preliminary gauge point configuration is carried out to each bar feeder line in power distribution network, from feeder line distalmost end, a collocation point makes two neighbors and this node considerable; A collocation point is considered to use the measurement equipment possessing a voltage channel and two current channels.
Step 502) based on step 501) preliminary configuration, the degree of association is greater than to feeder line root node PCC (the corresponding English full name: PointofCommonCoupling of 2; Chinese is: points of common connection) carry out gauge point configuration; If a degree of association is the harmonic source node of N, after preliminary configuration, this harmonic source node N-1 bar feeder line obtains gauge point configuration, and the number of branches between defined amount measuring point and feeder line root node is distance between the two.Represent that a node and degree of association are greater than the positional distance relation of the root node of 2 with coordinate form, concrete form of Definition is as Fig. 4.After feeder line tentatively configures, the distance between gauge point and feeder line root node is 1,2 and 3 three kind of situation, and the different configuring conditions that N-1 bar feeder line occurs have
kind.Be expressed as by range coordinate:
In formula, columns is N-1, and every a line represents a kind of collocation method, each element representation N-1 bar feeder line on this row after preliminary configuration, the distance of measure configuration point and PCC.Right
plant collocation method to analyze, under various method, system can equivalence become measure configuration in the form of which node, and equivalent result is as table 1.
The feeder line root node degree of association being greater than to 2 is that harmonic source injects node, and optimal configuration method capable is:
A) there is the element of 3 in range coordinate, optimal configuration method capable is PCC point is actual measure configuration point;
B) in range coordinate, element is all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point;
C) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point.
As shown in table 1, the feeder line root node degree of association being greater than to 2 is zero injection node, and optimal configuration method capable is:
A) in range coordinate exist two and be above 3 element, optimal configuration method capable is PCC point is actual measure configuration point;
B) do not exist in range coordinate 3 element and at least exist one be the element of 1, optimal configuration method capable is PCC point is equivalent measure configuration point;
C) only have an element to be 3 in range coordinate, all the other elements are all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association;
D) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association.
Table 1
In table 1, remarks are that √ represents that actual needs is at Joint Enterprise PMU (the corresponding English full name: PhasorMeasurementUnit adding collimation mark note; Corresponding Chinese: phasor measuring set); Remarks for × represent reality do not need add collimation mark note Joint Enterprise PMU.
Step 503) to step 502) distribute root node rationally after the feeder line structure situation that occurs, return step 501), until complete the gauge point configuration of whole network.
The topoligical equivalence based on power distribution network network of the embodiment of the present invention, on the basis determining system zero injection node, ornamental rule is utilized to carry out the preliminary equivalent process of network, for the network topology simplified, according to gauge point configuration equivalence principle, configuration is optimized to system, thus obtains the minimum allocation plan of gauge point.Harmonic wave measure configuration at present for power distribution network does not also compare effective method, the harmonic content measuring point Optimal Configuration Method for power distribution network that the embodiment of the present invention provides, this collocation method can carry out distributing rationally of harmonic content measuring point to the power distribution network of many feeder lines, realizes utilizing minimum measure configuration point to make system considerable.The method of the embodiment of the present invention improves the utilization ratio of each measure configuration point, both the requirement of system monitoring and data acquisition had been met, it also avoid unnecessary redundancy measure configuration, reduce the economic investment for system monitoring, for engineering construction, there is directive significance.
The inventive method based on based on load side information, is determined optimum measure configuration point by network equivalent, be ensure that the ornamental of system, is convenient to the later stage analyze for the harmonic wave of power distribution network.
Exemplifying an IEEE-33 node system is below example, and the inventive method is described.
IEEE-33 node system as shown in Figure 5, now supposes that load condition is as follows:
1. 2, No. 6 nodes are the distribution box node of power distribution network, do not have load;
2. 10,14,15,18,20,28, No. 32 nodes to connect load be common linear load, produce without harmonic wave;
3. other nodes are harmonic source node.
First the system shown in Fig. 5 is carried out to the step 30 of above-described embodiment), differentiate that zero injects node, determine 2,6,10,14,15,18,20,28, No. 32 is zero injection node.Then carry out step 40) the preliminary equivalent process of network, delete the zero injection node that the degree of association is 1 and 2, the power distribution network topology after simplification is as Fig. 6.In Fig. 6, be the zero injection node of 1 for the degree of association, the unique branch road deleted this node and be connected with other nodes; For the degree of association be 2 zero inject node, two branch roads deleted this node and be connected with other nodes, and increase a branch road two coupled nodes be directly connected.Finally Fig. 6 carry out step 50) distribute gauge point rationally, process with reference to table 1 for different situations, final configuration amount measuring point is as shown in Figure 7.In Fig. 7, by distributing rationally, 3,7,11,16,21,24,27, No. 31 nodes of this power distribution network are as measure configuration point, and at these seven Joint Enterprise PMU, 33 nodes realizing whole system are completely considerable.
More than show and describe ultimate principle of the present invention, principal character and advantage.Those skilled in the art should understand; the present invention is not by the restriction of above-mentioned specific embodiment; description in above-mentioned specific embodiment and instructions is just in order to further illustrate principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The scope of protection of present invention is defined by claims and equivalent thereof.
Claims (7)
1., for a harmonic content measuring point Optimal Configuration Method for power distribution network, it is characterized in that, the method comprises the following steps:
Step 10) obtain network topology and load side information, build network topology database and load side information database;
Step 20) carry out information checking: the step 10 to described) network topology that obtains and load side information carries out integrity degree verification, if meet integrity degree verification requirement, then enters step 30); Otherwise, return step 10), obtaining information again;
Step 30) differentiate that zero injects node: based on the load side information of described load side information database, differentiate whether node has zero injection node;
Step 40) carry out the preliminary equivalent process of network: based on step 30) differentiation result, according to ornamental rule, equivalent process is carried out to power distribution network topology, simplify power distribution network topology;
Step 50) distribute gauge point rationally: based on described step 40) preliminary equivalent process result, according to gauge point configuration equivalence principle, configuration is optimized to system, obtains the minimum allocation plan of gauge point.
2. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 1, is characterized in that, described step 10) specifically comprise:
Step 101) according to the electric connecting mode between node space layout each in power distribution network and node, determine the network topology of electrical network, and by network topology stored in database, form network topology database;
Step 102) obtain information on load that node connects in power distribution network, determine whether each node is connected to load, and the load type that connects, then whether node is connected to load with a load type information that connects successively stored in database, formation load side information database.
3. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 1, it is characterized in that, described step 20) in, the process of carrying out integrity degree verification is: differentiate whether network topology database comprises the connection in power distribution network between all nodes and all nodes, and differentiate whether load side information database comprises information on load that all nodes connect, if two databases all include all nodal informations in power distribution network, then meet integrity degree requirement; Otherwise do not meet integrity degree requirement.
4. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 1, is characterized in that, described step 30) specifically comprise:
Step 301) to the node in load side information database, distinguish node and the on-load node of not on-load, judge that the node of not on-load is as zero injection node;
Step 302) based on step 301) result of determination, according to on-load node connect the situation of load, by the on-load node in load side information database, be divided into the node of band linear load node and uncertain load type, judge that band linear load node is as zero injection node, is considered as harmonic source node by the node of uncertain load type;
Step 303) upgrade load side information database: by step 302) each node of judging adds load side information database as zero injection node or harmonic source nodal information.
5. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 1, it is characterized in that, described step 40) specifically comprise: based on step 30) differentiation result, according to the ornamental rule of power distribution network, the degree of association in deletion system be 1 and the degree of association be 2 zero inject node, and two nodes be connected with the degree of association node that is 2 are directly connected, preliminary equivalent process is carried out to power distribution network topology, and according to preliminary equivalent process result, upgrade network topology database.
6. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 1, is characterized in that, described step 50) specifically comprise:
Step 501) preliminary gauge point configuration is carried out to each bar feeder line in power distribution network, from feeder line distalmost end, a collocation point makes two neighbors and this node considerable;
Step 502) based on step 501) preliminary configuration, the feeder line root node PCC degree of association being greater than to 2 carries out gauge point configuration;
Step 503) to step 502) distribute root node rationally after the feeder line structure situation that occurs, return step 501), until complete the gauge point configuration of whole network.
7. the harmonic content measuring point Optimal Configuration Method for power distribution network according to claim 6, it is characterized in that, described step 502) specifically comprise: set a degree of association as the harmonic source node of N, after preliminary configuration, this harmonic source node N-1 bar feeder line obtains gauge point configuration, and the number of branches between defined amount measuring point and feeder line root node is distance between the two; After preliminary configuration, the distance between gauge point and feeder line root node is 1,2 and 3 three kind of situation, and the different configuring conditions that N-1 bar feeder line occurs have
kind, be expressed as by range coordinate:
In formula, columns is N-1, and every a line represents a kind of collocation method, each element representation N-1 bar feeder line on this row after preliminary configuration, the distance of measure configuration point and PCC;
The feeder line root node degree of association being greater than to 2 is that harmonic source injects node, and optimal configuration method capable is:
A) there is the element of 3 in range coordinate, optimal configuration method capable is PCC point is actual measure configuration point;
B) in range coordinate, element is all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point;
C) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point;
The feeder line root node degree of association being greater than to 2 is zero injection node, and optimal configuration method capable is:
A) in range coordinate exist two and be above 3 element, optimal configuration method capable is PCC point is actual measure configuration point;
B) do not exist in range coordinate 3 element and at least exist one be the element of 1, optimal configuration method capable is PCC point is equivalent measure configuration point;
C) only have an element to be 3 in range coordinate, all the other elements are all 2, optimal configuration method capable to be distance PCC point be 2 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association;
D) in all the other situations, optimal configuration method capable to be distance PCC point be 1 point be equivalent measure configuration point, be 2 zero inject node and make delete processing by PCC point according to the degree of association.
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| CN105701568A (en) * | 2016-01-11 | 2016-06-22 | 华北电力大学 | Heuristic power distribution network state estimation measurement position rapid optimization method |
| CN109102424A (en) * | 2018-07-19 | 2018-12-28 | 天津大学 | A kind of simplified method of the network topology measured based on distribution system synchronized phasor |
| CN110018346A (en) * | 2019-04-19 | 2019-07-16 | 南京工程学院 | A kind of measure configuration method of harmonic state estimation |
| CN110287449A (en) * | 2019-06-20 | 2019-09-27 | 中国石油大学(华东) | It is a kind of meter and topologies change Distribution Network Harmonics measuring point Optimal Configuration Method |
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| CN102183685A (en) * | 2011-03-10 | 2011-09-14 | 华北电力大学（保定） | Flexible wide area power grid phasor measurement method |
| CN104934979A (en) * | 2015-07-06 | 2015-09-23 | 东南大学 | A measurement configuration method used for power transmission network harmonic wave state estimation |
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| JP4327783B2 (en) * | 2005-09-27 | 2009-09-09 | 株式会社東芝 | Node group sorting apparatus and method for power system |
| CN102183685A (en) * | 2011-03-10 | 2011-09-14 | 华北电力大学（保定） | Flexible wide area power grid phasor measurement method |
| CN104934979A (en) * | 2015-07-06 | 2015-09-23 | 东南大学 | A measurement configuration method used for power transmission network harmonic wave state estimation |
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| CN105701568A (en) * | 2016-01-11 | 2016-06-22 | 华北电力大学 | Heuristic power distribution network state estimation measurement position rapid optimization method |
| CN105701568B (en) * | 2016-01-11 | 2019-12-03 | 华北电力大学 | A kind of didactic distribution network status estimation adjustment location fast Optimization |
| CN109102424A (en) * | 2018-07-19 | 2018-12-28 | 天津大学 | A kind of simplified method of the network topology measured based on distribution system synchronized phasor |
| CN109102424B (en) * | 2018-07-19 | 2021-09-28 | 天津大学 | Network topology simplification method based on synchronous phasor measurement of power distribution system |
| CN110018346A (en) * | 2019-04-19 | 2019-07-16 | 南京工程学院 | A kind of measure configuration method of harmonic state estimation |
| CN110287449A (en) * | 2019-06-20 | 2019-09-27 | 中国石油大学(华东) | It is a kind of meter and topologies change Distribution Network Harmonics measuring point Optimal Configuration Method |
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