CN101635462B - Capacity collocation method for substation compensation capacitor - Google Patents

Abstract

A capacity collocation method for substation compensation capacitor relates to the technical field of data processing and solves the technical problem of optimizing compensation capacitor collocation. The method comprises the following steps: setting time segment number of acquiring information about substation compensation equipment; 2) acquiring the optimal reactive compensation capacity of thesubstation compensation equipment in different time segments; 3) acquiring grouping information of the substation compensation equipment; 4) setting the group number of the compensation capacitor group that is put into operation now; 5) putting substation compensation equipment into operation in groups according to the capacitor switch and computing compensation capacity deviation of each time segment in each operation group; 6) searching the operation group number of the optimal capacity collocation of the compensation capacitor by adopting the method of exhaustion; 7) collocating the capacity of the substation compensation capacitor according to the searched result. The method provided in the invention is able to make compensation capacitor meet the requirements of reactive compensationto the fullest extent and performs the maximum economic benefit of the compensation capacitor.

Description

The capacity collocation method of substation compensation capacitor

Technical field

The present invention relates to data processing technique, particularly relate to a kind of technology of capacity collocation method of substation compensation capacitor.

Background technology

In order to realize electric network reactive-load, voltage optimal control, all require in electrical network, to install the compensation condenser of right quantity.The idle configuration of area power grid relates to the content of two aspects: 1) determine the reactive power compensation place; 2) determine the compensation capacity of each reactive power compensation point.

Present transformer station is when transforming, at first calculate rational compensation capacity and suitable reactive power compensation infield by optimizing algorithm, and then at reactive power compensation point the compensation condenser that is combined into by multiple unit capacitor is installed according to the compensation capacity that calculates and is used for reactive power compensation.By optimizing capacity configuration and the compound mode thereof of each electric capacity in the compensation condenser group, can make compensation condenser satisfy the demand of reactive power compensation to greatest extent, realize idle in-situ balancing, the maximum economic benefit of performance compensation condenser.

Summary of the invention

At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides the capacity collocation method of the substation compensation capacitor of a kind of capability value configuration of optimizing each electric capacity in the compensation condenser and compound mode thereof.

In order to solve the problems of the technologies described above, the capacity collocation method of a kind of substation compensation capacitor provided by the present invention is characterized in that, concrete steps are as follows:

1) the time period number that obtains transformer station's compensation equipment information every day being set is n;

2) time segment is obtained the OPTIMAL REACTIVE POWER compensation capacity of transformer station's compensation equipment, establishes it and is Q (t), wherein the time period of t for obtaining this Q (t);

3) obtain the compensation equipment grouping information of transformer station, obtain:

M＝∑M _i＝∑P _iN _i；

In the formula, M is the maximum compensation capacity of transformer station's compensation equipment, and i is group number under the compensation condenser group, M _iBe the compensation capacity of i group compensation condenser group, P _iBe the minimum compensation capacity of i group compensation condenser group, N _iMaximum group number for the compensation condenser group;

4) the group number of the current compensation condenser group that puts into operation is set, obtains:

M＝∑M _i＝∑P _iN _i＝∑P _i(N _i-K _i+K _i)；

In the formula, K _iBe the group number of the current compensation condenser group that puts into operation, its value is K _i=1,2 ..., N _i

5) transformer station's compensation equipment is put into operation according to the capacitor switch grouping, obtains:

M _t＝α∑P _i(N _i-K _i)+β∑P _iK _i；

In the formula, M _tBe the compensation capacity of t time period transformer station reactive apparatus, α and β are respectively put into operation coefficient and the coefficient that do not put into operation, its value be 1 o'clock for putting into operation, be 0 o'clock for not putting into operation;

α=1 and β=0 is set, obtains:

M(t)＝∑P _i(N _i-K _i)；

In the formula, M (t) is K _iGroup is in the compensation capacity deviation of t time period;

6) repeating step 4) to step 5), until K _i=N _i

7) repeating step 2) to step 6), until the time period number that obtains transformer station's compensation equipment information greater than n;

8) according to above-mentioned steps, obtain:

$F=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(M{\left(t\right)}_t-Q\left(t\right)\right)}^2=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(\underset{i}{\mathrm{\Σ}}{P}_i{(N_i-K_i)}_t-Q\left(t\right)\right)}^2;$

In the formula, F is N in n time period _iThe compensation capacity deviation least square value of the individual group that puts into operation;

9) obtain the F value group group that puts into operation hour and count K _i

10) count K according to the group group that puts into operation of step 9) _iThe capacity of configuration substation compensation capacitor.

Further, the optimum valuing range of described time period number n is between 288 to 1440.

The capacity collocation method of substation compensation capacitor provided by the invention, reactive compensation capacity value according to transformer station, adopt method of exhaustion to calculate the capacity of each compensation condenser group of transformer station, thereby search out the best group number that puts into operation, and according to the capacity of this best group number configuration substation compensation capacitor, make compensation condenser can satisfy the demand of reactive power compensation to greatest extent, realize idle in-situ balancing, the maximum economic benefit of performance compensation condenser.

Description of drawings

Fig. 1 is the flow chart of capacity collocation method of the substation compensation capacitor of the embodiment of the invention.

Embodiment

Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.

As shown in Figure 1, the capacity collocation method of a kind of substation compensation capacitor that the embodiment of the invention provides is characterized in that, concrete steps are as follows:

1) the time period number that obtains transformer station's compensation equipment information every day being set is n;

2) adopt optimization calculating or data mining mode time segment to obtain the OPTIMAL REACTIVE POWER compensation capacity of transformer station's compensation equipment, establish it and be Q (t), wherein the time period of t for obtaining this Q (t);

3) obtain the compensation equipment grouping information of transformer station, obtain:

M＝∑M _i＝∑P _iN _i；

In the formula, M is the maximum compensation capacity of transformer station's compensation equipment, and i is group number under the compensation condenser group, M _iBe the compensation capacity of i group compensation condenser group, P _iBe the minimum compensation capacity of i group compensation condenser group, N _iMaximum group number for the compensation condenser group;

4) the group number of the current compensation condenser group that puts into operation is set, obtains:

M＝∑M _i＝∑P _iN _i＝∑P _i(N _i-K _i+K _i)；

In the formula, K _iBe the group number of the current compensation condenser group that puts into operation, its value is K _i=1,2 ..., N _i

5) transformer station's compensation equipment is put into operation according to the capacitor switch grouping, obtains:

M _t＝α∑P _i(N _i-K _i)+β∑P _iK _i；

In the formula, M _tBe the compensation capacity of t time period transformer station reactive apparatus, α and β are respectively put into operation coefficient and the coefficient that do not put into operation, its value be 1 o'clock for putting into operation, be 0 o'clock for not putting into operation;

α=1 and β=0 is set, obtains:

M(t)＝∑P _i(N _i-K _i)；

In the formula, M (t) is K _iGroup is in the compensation capacity deviation of t time period;

6) repeating step 4) to step 5), until K _i=N _i

7) repeating step 2) to step 6), until the time period number that obtains transformer station's compensation equipment information greater than n;

8) according to above-mentioned steps, obtain:

$F=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(M{\left(t\right)}_t-Q\left(t\right)\right)}^2=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(\underset{i}{\mathrm{\Σ}}{P}_i{(N_i-K_i)}_t-Q\left(t\right)\right)}^2;$

In the formula, F is N in n time period _iThe compensation capacity deviation least square value of the individual group that puts into operation;

9) obtain the F value group group that puts into operation hour and count K _i

10) count K according to the group group that puts into operation of step 9) _iThe capacity of configuration substation compensation capacitor.

In the step 1) of the present invention, the optimum valuing range of time period number n is between 288 to 1440.

Claims (2)

1. the capacity collocation method of a substation compensation capacitor is characterized in that, concrete steps are as follows:

1) the time period number that obtains transformer station's compensation equipment information every day being set is n;

2) time segment is obtained the OPTIMAL REACTIVE POWER compensation capacity of transformer station's compensation equipment, establishes it and is Q (t), wherein the time period of t for obtaining this Q (t);

3) obtain the compensation equipment grouping information of transformer station, obtain:

M＝∑M _i＝∑P _iN _i；

In the formula, M is the maximum compensation capacity of transformer station's compensation equipment, and i is group number under the compensation condenser group, M _iBe the compensation capacity of i group compensation condenser group, P _iBe the minimum compensation capacity of i group compensation condenser group, N _iMaximum group number for the compensation condenser group;

4) the group number of the current compensation condenser group that puts into operation is set, obtains:

M＝∑M _i＝∑P _iN _i＝∑P _i(N _i-K _i+K _i)；

In the formula, K _iBe the group number of the current compensation condenser group that puts into operation, its value is K _i=1,2 ..., N _i

5) transformer station's compensation equipment is put into operation according to the capacitor switch grouping, obtains:

M _t＝α∑P _i(N _i-K _i)+β∑P _iK _i；

In the formula, M _tBe the compensation capacity of t time period transformer station reactive apparatus, α and β are respectively put into operation coefficient and the coefficient that do not put into operation, its value be 1 o'clock for putting into operation, be 0 o'clock for not putting into operation;

α=1 and β=0 is set, obtains:

M(t)＝∑P _i(N _i-K _i)；

In the formula, M (t) is K _iGroup is in the compensation capacity deviation of t time period;

6) repeating step 4) to step 5), until K _i=N _i

7) repeating step 2) to step 6), until the time period number that obtains transformer station's compensation equipment information greater than n;

8) according to above-mentioned steps, obtain:

$F=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(M{\left(t\right)}_t-Q\left(t\right))\right)}^2=\min {\left(\underset{t=1}{\overset{n}{\mathrm{\Σ}}}(\underset{i}{\mathrm{\Σ}}{P}_i{(N_i-K_i)}_t-Q\left(t\right))\right)}^2;$

In the formula, F is N in n time period _iThe compensation capacity deviation least square value of the individual group that puts into operation;

9) obtain the F value group group that puts into operation hour and count K _i

10) count K according to the group group that puts into operation of step 9) _iThe capacity of configuration substation compensation capacitor.

2. method according to claim 1, it is characterized in that: the optimum valuing range of described time period number n is between 288 to 1440.