CN105279710A - Regional power grid data exception identification method and system - Google Patents

Abstract

The invention provides a regional power grid data exception identification method and system. The method comprises: establishing a node matrix equation according to a topological graph of the nodes in a regional power grid, wherein each line of the matrix stands one node; the I0-I9 are the correlative currents between the correlative nodes; each correlative node means a node that the same current participates in two node equations; and each correlative current means a current which participates in the two nodes; monitoring whether the node currents of any two correlative nodes do not turn 0 at the same time, wherein if the node currents of any two correlative nodes do not turn 0 at the same time, the data of the correlative currents is exceptional so that exception identification is performed.

Description

Regional power grid data exception discrimination method and system

Technical field

The present invention relates to transmission of electricity security technology area, refer to a kind of regional power grid data exception discrimination method and system especially.

Background technology

The electric power being transported to various places is continually the resource that human lives is indispensable, and transmit electricity, power transformation technology ensures the basis of electric power transfer.In order to ensure the safety and reliability of electric power transfer, the data of monitored area electrical network are needed whether to exist abnormal to guarantee power grid security.In stratification Protection control system, area data quality is subject to the impact of multiple situation:

The first, measurement and communication system are subject to external disturbance;

The second, measure and in communication process, random failure occur;

3rd, the measurement data step-out that clock step-out causes.

Therefore, before locality protection or control are applied, the many above-mentioned factors such as sampling, communication that should be taken into account, on the impact of the quality of data, carry out data identification or assessment.But cannot efficiently data processing and service application be combined in prior art.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of regional power grid data exception discrimination method and system, can go wrong according to going out those nodes based on data analysis between each node with express-analysis, improves transmission of electricity security.

In order to solve the problem, the embodiment of the present invention proposes a kind of regional power grid data exception discrimination method, comprising:

According to the topological diagram of regional power grid interior joint, set up nodal matrix equations;

Whether monitor the node current of any two associated nodes and be not simultaneously 0, if it is associated current data exception is to carry out abnormal verification.

Wherein, described nodal matrix equations is specially:

Wherein said matrix equation is two matrix multiples;

It is capable that wherein said first matrix has N, and every a line represents a node; Also there are M row, the flow direction of the associated current between each row representation node;

It is capable that wherein said second matrix has N, and every a line represents an associated current.

Wherein, described nodal matrix equations is specially:

$\left[\begin{array}{cccccccccc}1& 1& 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 0& -1& 0& -1& 0& 0& 0& 0& 0\\ 0& -1& 0& 0& 0& -1& 0& 0& 0& 0\\ 0& 0& 0& 1& 0& 0& -1& 0& 0& 0\\ 0& 0& 0& 0& 1& 1& 1& 1& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& K_7& K_8& K_9\end{array}\right]\left[\begin{array}{c}{I}_0\\ I_1\\ I_2\\ I_3\\ I_4\\ I_5\\ I_6\\ I_7\\ I_8\\ I_9\end{array}\right]=0$

Wherein first matrix has 6 row with corresponding 6 nodes, the sense of current between this node of each node on behalf of matrix and other nodes; 0 representative does not associate with between this node, and no current flows through; 1 represent electric current be flow into this node;-1 represent electric current be flow out this node; K7, K8, K9 represent the no-load voltage ratio coefficient of transformer;

Wherein said I ₀-I ₉for the associated current between associated nodes; Wherein associated nodes refers to the node participated in by same electric current in two modal equations; Associated current is the electric current participating in described two nodes;

Monitor the node current of any two associated nodes and be not whether simultaneously 0, if it is abnormal verification is carried out to associated current data.

Wherein, carry out exception verification to associated current data specifically to comprise:

By comprise associated current two associated nodes phases and, form the new extension modal equation not comprising abnormal associated current; Judge described new node electric current and be zero, if it is confirm that associated current is abnormal.

Wherein, described regional power grid interior joint includes but not limited to: intersite line, stand interior bus, transformer.

Meanwhile, the embodiment of the present invention also proposed a kind of regional power grid data exception identification system, comprising:

Matrix sets up unit, for the topological diagram according to regional power grid interior joint, sets up nodal matrix equations;

Monitoring means, whether for monitoring the node current of any two associated nodes and be not 0 simultaneously, if it is associated current data exception is to carry out abnormal verification.

Wherein, described nodal matrix equations is specially:

Wherein said matrix equation is two matrix multiples;

It is capable that wherein said first matrix has N, and every a line represents a node; Also there are M row, the flow direction of the associated current between each row representation node;

It is capable that wherein said second matrix has N, and every a line represents an associated current.

Wherein, described nodal matrix equations is specially:

$\left[\begin{array}{cccccccccc}1& 1& 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 0& -1& 0& -1& 0& 0& 0& 0& 0\\ 0& -1& 0& 0& 0& -1& 0& 0& 0& 0\\ 0& 0& 0& 1& 0& 0& -1& 0& 0& 0\\ 0& 0& 0& 0& 1& 1& 1& 1& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& K_7& K_8& K_9\end{array}\right]\left[\begin{array}{c}{I}_0\\ I_1\\ I_2\\ I_3\\ I_4\\ I_5\\ I_6\\ I_7\\ I_8\\ I_9\end{array}\right]=0$

Wherein first matrix has 6 row with corresponding 6 nodes, the sense of current between this node of each node on behalf of matrix and other nodes; 0 representative does not associate with between this node, and no current flows through; 1 represent electric current be flow into this node;-1 represent electric current be flow out this node; K7, K8, K9 represent the no-load voltage ratio coefficient of transformer;

Wherein said I ₀-I ₉for the associated current between associated nodes; Wherein associated nodes refers to the node participated in by same electric current in two modal equations; Associated current is the electric current participating in described two nodes;

Monitor the node current of any two associated nodes and be not whether simultaneously 0, if it is abnormal verification is carried out to associated current data.

Wherein, carry out exception verification to associated current data specifically to comprise:

By comprise associated current two associated nodes phases and, form the new extension modal equation not comprising abnormal associated current; Judge described new node electric current and be zero, if it is confirm that associated current is abnormal.

Wherein, described regional power grid interior joint includes but not limited to: intersite line, stand interior bus, transformer.

The beneficial effect of technique scheme of the present invention is as follows: can carry out data exception confirmation fast in such scheme.

Accompanying drawing explanation

Fig. 1 is the topological diagram of regional power grid interior joint;

Fig. 2 is the data exception identification process process flow diagram of the embodiment of the present invention.

Embodiment

For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.

For the topological diagram of regional power grid interior joint as shown in Figure 1, it comprises 6 nodes, and defines ten associated currents between these 6 nodes.

The above-mentioned node current equation corresponding to node 1-6, in identification process, definition associated nodes and associated current.Have same electric current to participate in two modal equations, be associated nodes, this current definition is the associated current of associated nodes, if node 1 and node 2 are associated nodes, and electric current I ₂associated current for the two).

As shown in Figure 2, monitoring flow process specifically comprises: if the situation of Kirchhoff's current law (KCL) appears not meeting in any 2 associated nodes simultaneously, i.e. node current and be not simultaneously 0, so namely thinks associated current data exception, and carries out abnormal verification.By comprise associated current two associated nodes phases and, form the new extension modal equation not comprising abnormal associated current.If new node electric current and be zero.So can confirm that associated current is abnormal.Based on above-mentioned anomalous data identification basis, reverse reparation can be carried out simultaneously.And with the topological node of transformer, need to consider coefficient.According to this discrimination method, data exception confirmation can be carried out fast.

The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a regional power grid data exception discrimination method, is characterized in that, comprising:

According to the topological diagram of regional power grid interior joint, set up nodal matrix equations;

Whether monitor the node current of any two associated nodes and be not simultaneously 0, if it is associated current data exception is to carry out abnormal verification.

2. regional power grid data exception discrimination method according to claim 1, it is characterized in that, described nodal matrix equations is specially:

Wherein said matrix equation is two matrix multiples;

It is capable that wherein said first matrix has N, and every a line represents a node; Also there are M row, the flow direction of the associated current between each row representation node;

It is capable that wherein said second matrix has N, and every a line represents an associated current.

3. regional power grid data exception discrimination method according to claim 2, it is characterized in that, described nodal matrix equations is specially:

$\left[\begin{array}{cccccccccc}1& 1& 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 0& -1& 0& -1& 0& 0& 0& 0& 0\\ 0& -1& 0& 0& 0& -1& 0& 0& 0& 0\\ 0& 0& 0& 1& 0& 0& -1& 0& 0& 0\\ 0& 0& 0& 0& 1& 1& 1& 1& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& K_7& K_8& K_9\end{array}\right]\left[\begin{array}{c}{I}_0\\ I_1\\ I_2\\ I_3\\ I_4\\ I_5\\ I_6\\ I_7\\ I_8\\ I_9\end{array}\right]=0$

Wherein first matrix has 6 row with corresponding 6 nodes, the sense of current between this node of each node on behalf of matrix and other nodes; 0 representative does not associate with between this node, and no current flows through; 1 represent electric current be flow into this node;-1 represent electric current be flow out this node; K7, K8, K9 represent the no-load voltage ratio coefficient of transformer;

Wherein said I ₀-I ₉for the associated current between associated nodes; Wherein associated nodes refers to the node participated in by same electric current in two modal equations; Associated current is the electric current participating in described two nodes;

Monitor the node current of any two associated nodes and be not whether simultaneously 0, if it is abnormal verification is carried out to associated current data.

4. regional power grid data exception discrimination method according to claim 3, is characterized in that, carries out exception verification specifically comprise associated current data:

By comprise associated current two associated nodes phases and, form the new extension modal equation not comprising abnormal associated current; Judge described new node electric current and be zero, if it is confirm that associated current is abnormal.

5. regional power grid data exception discrimination method according to claim 1, is characterized in that, described regional power grid interior joint includes but not limited to: intersite line, stand interior bus, transformer.

6. a regional power grid data exception identification system, is characterized in that, comprising:

Matrix sets up unit, for the topological diagram according to regional power grid interior joint, sets up nodal matrix equations;

Monitoring means, whether for monitoring the node current of any two associated nodes and be not 0 simultaneously, if it is associated current data exception is to carry out abnormal verification.

7. regional power grid data exception identification system according to claim 6, it is characterized in that, described nodal matrix equations is specially:

Wherein said matrix equation is two matrix multiples;

It is capable that wherein said first matrix has N, and every a line represents a node; Also there are M row, the flow direction of the associated current between each row representation node;

It is capable that wherein said second matrix has N, and every a line represents an associated current.

8. regional power grid data exception identification system according to claim 7, it is characterized in that, described nodal matrix equations is specially:

$\left[\begin{array}{cccccccccc}1& 1& 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 0& -1& 0& -1& 0& 0& 0& 0& 0\\ 0& -1& 0& 0& 0& -1& 0& 0& 0& 0\\ 0& 0& 0& 1& 0& 0& -1& 0& 0& 0\\ 0& 0& 0& 0& 1& 1& 1& 1& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& K_7& K_8& K_9\end{array}\right]\left[\begin{array}{c}{I}_0\\ I_1\\ I_2\\ I_3\\ I_4\\ I_5\\ I_6\\ I_7\\ I_8\\ I_9\end{array}\right]=0$

Wherein first matrix has 6 row with corresponding 6 nodes, the sense of current between this node of each node on behalf of matrix and other nodes; 0 representative does not associate with between this node, and no current flows through; 1 represent electric current be flow into this node;-1 represent electric current be flow out this node; K7, K8, K9 represent the no-load voltage ratio coefficient of transformer;

Wherein said I ₀-I ₉for the associated current between associated nodes; Wherein associated nodes refers to the node participated in by same electric current in two modal equations; Associated current is the electric current participating in described two nodes;

Monitor the node current of any two associated nodes and be not whether simultaneously 0, if it is abnormal verification is carried out to associated current data.

9. regional power grid data exception identification system according to claim 8, is characterized in that, carries out exception verification specifically comprise associated current data:

By comprise associated current two associated nodes phases and, form the new extension modal equation not comprising abnormal associated current; Judge described new node electric current and be zero, if it is confirm that associated current is abnormal.

10. regional power grid data exception identification system according to claim 6, is characterized in that, described regional power grid interior joint includes but not limited to: intersite line, stand interior bus, transformer.