CN106953337A - The reactive power compensator collocation method of regulation is participated in based on high energy load - Google Patents

Abstract

The invention discloses the reactive power compensator collocation method that regulation is participated in based on high energy load, including：Layout data, including high energy load peak power are obtained, high energy load participates in new energy EIAJ under regulation situation etc.；Basis of formation plans effective power flow state；Apply new energy 1min fluctuations, form combination flow state；Carry out configuration needs judgement；Select the alternative access node of newly added equipment；Quiet, dynamic passive compensation capacity price weight is determined, configuration optimization model is set up；Determine that high energy load participates in the extensive new energy access electric network reactive-load device allocation plan of regulation.The reactive compensator of electrical network configuration provides technical support that extensive new energy is dissolved under the new situation is participated in for high energy load.

Description

The reactive power compensator collocation method of regulation is participated in based on high energy load

Technical field

The present invention relates to electric network reactive compensation technical field, in particular it relates to participate in the nothing of regulation based on high energy load Reactive power compensation installations collocation method.

Background technology

In recent years, the fast development of access capacity, but system ability to send outside and peak regulation energy are concentrated in extensive new energy base Power deficiency seriously constrains dissolving for new energy, is dissolved problem to alleviate new energy, is presently considered and excavates load side regulating power, High energy load is included into regulation progress new energy to dissolve.But current reactive power compensator allocation plan does not consider in planning This new situations, possibly can not meet the voltage-regulation need that high energy load participates in the extensive new energy access power network of regulation Ask, accordingly, it would be desirable to the extensive new energy that a kind of new reactive power compensator collocation method is adjusted to solve high energy load to participate in The Reactive Power Device allocation problem of power network is accessed in source.

The content of the invention

It is an object of the invention to regarding to the issue above, propose to participate in the reactive-load compensation dress of regulation based on high energy load Collocation method is put, to overcome drawbacks described above.

To achieve the above object, the technical solution adopted by the present invention is：The idle benefit of regulation is participated in based on high energy load Device collocation method is repaid, is mainly included：

Step 1：Layout data is obtained, basis of formation Tide of Planning state performs step 2；

Step 2：Apply

New energy goes out fluctuation, forms combination flow state to be optimized, performs step 3；

Step 3：The combination flow state to be optimized is calculated, existing reactive power compensator switching mode is judged Line voltage whether can be kept not out-of-limit, if so, step 5 is then performed, if it is not, then performing step 4；

Step 4：Reactive power compensator configuration optimization mould is set up to the combination flow state that voltage can not be kept not out-of-limit Type, carries out reactive power compensator and distributes rationally；

Step 5：The extensive new energy access reactive compensator of electrical network configuration that high energy load participates in regulation terminates.

Further, in step 2, the application new energy goes out fluctuation specifically, applying 1min new energy goes out fluctuation.

Further, in step 1, the layout data includes high energy load data and new energy layout data, specifically The maximum electric power and new energy EIAJ of regulation are participated in including high energy load.

Further, step 4 is specifically included,

Step 401：Choose newly-increased reactive power compensator alternate node；

Step 402：Quiet dynamic reactive capacity weight coefficient is set；

Step 403：Set up reactive power compensator configuration optimization model.

Further, in step 403, the Optimized model includes：

Object function, is specially to increase the minimum object function of capacity of reactive power compensation device newly to weight,

It is describedWithRespectively node i increases capacitance and reactance capacity newly；It is describedWithFor node i increase newly SVC capacity lower limit and The upper limit, α is capacity reactance device capacity weight coefficient, and β is SVC capacity weight coefficients；

Constraints, specifically includes each node active power balance equality constraint, non-newly added equipment alternate node without Work(power-balance equality constraint, newly added equipment alternate node reactive balance inequality constraints condition and each node voltage Formula constraints；

The equality constraint is,

The inequality constraints condition is,

It is described P_ikAnd Q_ikRespectively state k lower nodes i injection active power and reactive power, G_ijAnd B_ijThe respectively mutual electricity of node i and j Lead and mutual susceptance, δ_ijkFor state k lower nodes i and j phase difference of voltage, δ_ijmFor state m lower nodes i and j phase difference of voltage, U_ikFor state k lower nodes i voltage magnitude, U_imFor state m lower nodes i voltage magnitude, U_jkFor

State k lower nodes j voltage magnitude, U_jmFor state m lower nodes j voltage magnitude, U_imin、U_imaxRespectively node I allowable voltage lower limit and the upper limit,WithCapacitance and reactance capacity are increased newly for node i,WithIt is newly-increased for node i The lower and upper limit of SVC capacity；

NN is node serial number set, and NP is that alternative reactive power compensator installs node serial number set；

S is combination flow state numbering set, S₀Based on Tide of Planning status number, S₁For under the fluctuation of 1min new energy Flow state numbering set, the combination flow state numbering set S=S₀∪S₁。

Various embodiments of the present invention based on high energy load participate in regulation reactive power compensator collocation method, due to for High energy load participates in the extensive new energy access reactive compensator of electrical network configuration of regulation, it is contemplated that the fluctuation of new energy And the controllability of high energy load is there is provided effective reactive power compensator collocation method, it can participate in big for high energy load The reactive compensator of electrical network configuration provides technical support that scale new energy is dissolved under the new situation.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification Obtain it is clear that or being understood by implementing the present invention.

Below by drawings and Examples, technical scheme is described in further detail.

Brief description of the drawings

Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：

Fig. 1 is the reactive power compensator collocation method that regulation is participated in based on high energy load described in the embodiment of the present invention Flow chart；

Fig. 2 is the Hexi Corridor electric network composition schematic diagram described in the embodiment of the present invention；

Under Fig. 3 combines for a certain existing reactive power compensator switching described in the embodiment of the present invention, combination flow state Voltage condition schematic diagram；

Fig. 4 is that being currently configured described in the embodiment of the present invention is unsatisfactory for requiring, when holding node voltage meets lower range Voltage condition schematic diagram；

After Fig. 5 is the optimized configuration reactive power compensator described in the embodiment of the present invention, offset voltage situation map.

Embodiment

The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferred reality described herein Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.

Embodiment 1

Fig. 1 is the stream for the extensive new energy access reactive compensator of electrical network collocation method that high energy load participates in regulation Cheng Tu.The high energy load that the present invention is provided participates in the extensive new energy access reactive compensator of electrical network collocation method of regulation Including：

S1：The layout datas such as high energy load, new energy are obtained, including high energy load participates in the maximum electric work of regulation Rate, new energy EIAJ etc., basis of formation Tide of Planning state S₀；

S2：Apply 1min new energy on the basis of S1 and go out fluctuation, form combination flow state；Remember 1min new energy ripples Dynamic lower flow state numbering collection is combined into S₁, it is to be optimized combination flow state numbering collection be combined into S, S=S₀∪S₁；

S3：The combination flow state S to be optimized formed to S2 is calculated, and judges whether a kind of existing idle benefit Device switching mode is repaid so that voltage is met requires, if being not present, turns S4, if in the presence of turning S5；

S4：Reactive power compensator configuration optimization model is set up to combination flow state S, reactive power compensator optimization is carried out and matches somebody with somebody Put；

S5：The extensive new energy access reactive compensator of electrical network configuration that high energy load participates in regulation terminates.

Above-mentioned S4 comprises the following steps：

S401：Newly-increased reactive power compensator alternate node is chosen, alternative reactive power compensator installing node serial number set is remembered For NP；

S402：Quiet dynamic reactive capacity weight coefficient respectively α, β are set；

S403：Set up reactive power compensator configuration optimization model.

The Optimized model that above-mentioned S403 is set up includes：

Object function：To weight the minimum object function of newly-increased capacity of reactive power compensation device；

Determine the object function of Optimized model：

Constraints：Each node active power balance equality constraint, non-newly added equipment alternate node reactive power equilibrium etc. Formula is constrained, newly added equipment alternate node reactive balance inequality constraints, each node voltage inequality constraints.

Equality constraint：

Inequality constraints condition：

P_ik、Q_ikInjection for state k lower nodes i is active, idle, G_ij、B_ijFor node i and j transconductance, mutual susceptance, δ_ijkFor state k lower nodes i and j phase difference of voltage, δ_ijmFor state m lower nodes i and j phase difference of voltage, U_ikFor under state k The voltage magnitude of node i, U_imFor state m lower nodes i voltage magnitude, U_jkFor state k lower nodes j voltage magnitude, U_jmFor shape State m lower nodes j voltage magnitude, U_imin、U_imaxThe respectively allowable voltage lower limit and the upper limit of node i,It is new for node i Increase electric capacity, reactance capacity,Increase the lower and upper limit of SVC capacity newly for node i, NN is node serial number set, and NP is standby Reactive power compensator is selected to install node serial number set；S is combination flow state numbering set, S₀Based on Tide of Planning state compile Number, S₁For the lower flow state numbering set of 1min new energy fluctuation, combination flow state numbering set S=S₀∪S₁；α is electric capacity Reactor capacity weight coefficient, β is SVC capacity weight coefficients.

Embodiment 2：

By taking Hexi Corridor power network as an example, structural representation is as shown in Fig. 2 table 1 is the existing reactive-load compensation of Hexi Corridor power network Configuration.The high energy load that the present invention is provided participates in the extensive new energy access reactive compensator of electrical network collocation method of regulation Including：

The existing idle configuration of the Hexi Corridor power network of table 1

S1：The layout datas such as high energy load, new energy are obtained, including high energy load participates in the maximum electric work of regulation Rate, new energy EIAJ etc., basis of formation Tide of Planning state S₀；

High energy load power maximum electric power is respectively (Dongxing Aluminum 735MW, three new silicon industry 252MW, wine steel at three Virtual load -180.9MW), wind-light-electricity EIAJ is the maximum receiving ability in each department, wherein dunhuang area exert oneself 1530MW, Exert oneself 700MW, Zhangye Prefecture of Yumen area exerts oneself 1940MW.

S2：Apply 1min new energy on the basis of S1 and go out fluctuation, form combination flow state to be optimized, note 1min is new The lower flow state numbering collection of energy fluctuation is combined into S₁, it is to be optimized combination flow state numbering collection be combined into S, S=S₀∪S₁；

1min maximum fluctuations are using 0.95 probability as 10%, therefore ± 10% new energy of application goes out fluctuation here.Due to working as Preceding state bears state for Hexi prefecture rack maximum, therefore, only considers that -10% new energy goes out fluctuation.

S3：The combination flow state S to be optimized formed to S2 is calculated, and judges whether a kind of existing idle benefit Device switching mode is repaid so that voltage is met requires, if being not present, turns S4, if in the presence of turning S5；

Table 2 and table 3 are Gansu rack 750kV and 330kV node serial number, a certain existing reactive power compensator switching combination Under, the voltage condition for combining flow state is as shown in Figure 3；

The node serial number of table 2 750

Numbering	Node name
		1	Sweet Dunhuang 71
2	Sweet husky state 71
		3	Sweet Jiuquan 71
4	The sweet west of a river 71

The node serial number of table 3 330

Numbering	Node name	Numbering	Node name
				1	Sweet Heihe 31	25	Sweet camel city 31
2	Sweet electricity 31	26	Sweet dry eastern 31
				3	Sweet Zhangye 31	27	Sweet Wuwei thermoelectricity 31
4	Sweet folk music opens 31	28	Sweet bridge 6831
				5	Sweet morningstar lily 31	29	Sweet dry northern 31
6	Sweet Jinchang power plant 31	30	Sweet Dunhuang 31
				7	Sweet ancient wave 31	31	Sweet bridge west 31
8	Sweet red sand hill 31	32	Sweet quintar 31
				9	Gan Jinre 31	33	Sweet Chinese ephedra 31
10	Sweet pair of gulf 31	34	Sweet Jiuquan thermoelectricity 31
				11	Sweet upper river bend 31	35	Sweet Guazhou County 31
12	The sweet west of a river 31	36	Sweet red building 31
				13	The big beaches 31 of Gan Dong	37	Sweet dry western 31
14	Gan Leitai 31	38	Sweet prosperous western 31
				15	Sweet Jinchang becomes 31	39	Sweet Yumen 31
16	Sweet peace 6231	40	Sweet Jiuquan 31
				17	Sweet peace 431	41	Sweet acthar 31
18	Sweet peace 2331	42	Sweet Crescent Spring 31
				19	Gan Qiao gulfs 31	43	Sweet husky state 31
20	Sweet bridge 131	44	Gan Yumendong opens 31
				21	Sweet bridge 231	45	Sweet the Jiayu Pass 31
22	Gan Bulong 31	46	Sweet wine steel 31
				23	Sweet bridge east 31	47	Sweet impregnable pass 31
24	Sweet Liangzhou 31	48	Sweet Dongxing Aluminum 31

From the figure 3, it may be seen that being constrained for the current rack of Hexi Corridor, existing Reactive Power Device is enough to keep line voltage in permission Within the scope of, therefore in this case, without increasing reactive power compensator newly.Voltage is not out-of-limit, goes to S5.

S5：The extensive new energy access reactive compensator of electrical network configuration that high energy load participates in regulation terminates.

Embodiment 3

Consider the following rack of Hexi Corridor, the high energy load that the present invention is provided participates in the extensive new energy access of regulation Reactive compensator of electrical network collocation method includes：

S1：The layout datas such as high energy load, new energy are obtained, including high energy load participates in the maximum electric work of regulation Rate, new energy EIAJ etc., basis of formation Tide of Planning state S₀；

High energy load power maximum electric power is respectively (Dongxing Aluminum 735MW, three new silicon industry 252MW, wine steel at three Virtual load -180.9MW), wind-light-electricity EIAJ is the maximum receiving ability in each department, and wind-light-electricity EIAJ of exerting oneself is 8220MW。

S2：Apply 1min new energy on the basis of S1 and go out fluctuation, form combination flow state to be optimized, note 1min is new The lower flow state numbering collection of energy fluctuation is combined into S₁, it is to be optimized combination flow state numbering collection be combined into S, S=S₀∪S₁；

1min maximum fluctuations are using 0.95 probability as 10%, therefore ± 10% new energy of application goes out fluctuation here.

S3：The combination flow state S to be optimized formed to S2 is calculated, and judges whether a kind of existing idle benefit Device switching mode is repaid so that voltage meets requirement.It is computed, is currently configured and is unsatisfactory for requiring, keeps node voltage to meet lower limit Voltage condition during scope is as shown in Figure 4.

As shown in Figure 4, under the scene, overall capacitive reactive power is sufficient, Jiu Gang aluminium manufacturers (Dongxing Aluminum) and the node of impregnable pass 330 (i.e. Jiuquan region high energy access node) capacitive reactive power is not enough；New energy is exerted oneself in the case of fluctuation 10% downwards, multinode electricity Pressure gets over the upper limit.

S4：Reactive power compensator configuration optimization model is set up to the combination flow state S of above-mentioned discontented afc voltage constraint, entered Row reactive power compensator is distributed rationally, is that Dongxing Aluminum adds 60MVar capacitors in Jiu Gang aluminium manufacturers, without increasing SVC device.

Voltage condition is as shown in Figure 5 after compensation：

Fig. 5 shows that voltage meets requirement under optimized configuration reactive power compensator, the scene.

S5：The extensive new energy access reactive compensator of electrical network configuration that high energy load participates in regulation terminates.

Above-mentioned S4 comprises the following steps：

S401：Newly-increased reactive power compensator alternate node is chosen, alternative reactive power compensator installing node serial number set is remembered For NP；

S402：It is respectively α=1, β=10 to set quiet dynamic reactive capacity weight coefficient；

S403：Set up reactive power compensator configuration optimization model.

Object function：To weight the minimum object function of newly-increased capacity of reactive power compensation device；

Determine the object function of Optimized model：

Constraints：Each node active power balance equality constraint, non-newly added equipment alternate node reactive power equilibrium etc. Formula is constrained, newly added equipment alternate node reactive balance inequality constraints, each node voltage inequality constraints.

Equality constraint：

Inequality constraints condition：

P_ik、Q_ikInjection for state k lower nodes i is active, idle, G_ij、B_ijFor node i and j transconductance, mutual susceptance, δ_ijkFor state k lower nodes i and j phase difference of voltage, U_ikFor state k lower nodes i voltage magnitude, It is new for node i Increase electric capacity, reactance capacity,Increase lower and upper limit, the reactance capacity of SVC capacity newly for node i, NN is node serial number collection Close, NP is that alternative reactive power compensator installs node serial number set；S is combination flow state numbering set, S₀Based on plan Flow state is numbered, S₁For the lower flow state numbering set of 1min new energy fluctuation, combination flow state numbering set S=S₀∪ S₁；α is capacity reactance device capacity weight coefficient, and β is SVC capacity weight coefficients.

This method participates in the extensive new energy access reactive compensator of electrical network configuration of regulation for high energy load, examines The fluctuation of new energy and the controllability of high energy load have been considered there is provided effective reactive power compensator collocation method, can The reactive compensator of electrical network configuration provides technical support that extensive new energy is dissolved under the new situation is participated in for high energy load.

Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, Although the present invention is described in detail with reference to the foregoing embodiments, for a person skilled in the art, it still may be used To be modified to the technical scheme described in foregoing embodiments, or to which part technical characteristic progress equivalent. Within the spirit and principles of the invention, any modifications, equivalent substitutions and improvements made etc., should be included in the present invention's Within protection domain.

Claims (5)

1. the reactive power compensator collocation method of regulation is participated in based on high energy load, it is characterised in that comprise the following steps：

Step 1：Layout data is obtained, basis of formation Tide of Planning state performs step 2；

Step 2：Apply new energy and go out fluctuation, form combination flow state to be optimized, perform step 3；

Step 3：The combination flow state to be optimized is calculated, whether existing reactive power compensator switching mode is judged Line voltage can be kept not out-of-limit, if so, step 5 is then performed, if it is not, then performing step 4；

Step 4：Reactive power compensator configuration optimization model is set up to the combination flow state that voltage can not be kept not out-of-limit, entered Row reactive power compensator is distributed rationally；

Step 5：The extensive new energy access reactive compensator of electrical network configuration that high energy load participates in regulation terminates.

2. the reactive power compensator collocation method according to claim 1 that regulation is participated in based on high energy load, its feature It is that in step 2, the application new energy goes out fluctuation specifically, applying 1min new energy goes out fluctuation.

3. the reactive power compensator collocation method according to claim 2 that regulation is participated in based on high energy load, its feature It is that in step 1, the layout data includes high energy load data and new energy layout data, specifically includes high energy and bear Lotus participates in the maximum electric power and new energy EIAJ of regulation.

4. the reactive power compensator collocation method according to claim 3 that regulation is participated in based on high energy load, its feature It is that step 4 is specifically included,

Step 401：Choose newly-increased reactive power compensator alternate node；

Step 402：Quiet dynamic reactive capacity weight coefficient is set；

Step 403：Set up reactive power compensator configuration optimization model.

5. the reactive power compensator collocation method according to claim 4 that regulation is participated in based on high energy load, its feature It is that in step 403, the Optimized model includes：

Object function, is specially to increase the minimum object function of capacity of reactive power compensation device newly to weight,

It is describedWithRespectively node i increases capacitance and reactance capacity newly；It is describedWithIncrease the lower and upper limit of SVC capacity newly for node i, α is capacity reactance device capacity weight coefficient, and β is SVC capacity weight coefficients；

Constraints, specifically includes each node active power balance equality constraint, the non-idle work(of newly added equipment alternate node Rate equation constraints, newly added equipment alternate node reactive balance inequality constraints condition and each node voltage inequality are about Beam condition；

The equality constraint is,

$\left\{\begin{array}{cc}{P}_{ik}=U_{ik}\underset{j\≠i}{\Σ}{U}_{jk}(G_{ij}{\mathrm{cos\δ}}_{ijk}+B_{ij}{\mathrm{sin\δ}}_{ijk})& i\∈NN,k\∈S\\ Q_{ik}=U_{ik}\underset{j\≠i}{\Σ}{U}_{jk}(G_{ij}{\mathrm{sin\δ}}_{ijk}-B_{ij}{\mathrm{cos\δ}}_{ijk})& i\∈NN-NP,k\∈S_0,\end{array}\right.$

The inequality constraints condition is,

$\left\{\begin{array}{cc}{Q}_{ic}^{-}\≤Q_{ik}-U_{ik}\underset{j\≠i}{\mathrm{\Σ}}{U}_{jk}\left(G_{ij}{\mathrm{sin\δ}}_{ijk}-B_{ij}{\mathrm{cos\δ}}_{ijk}\right)\≤Q_{ic}^{+}& i\∈NP,k\∈S_0\\ Q_{id}^{-}\≤Q_{im}-U_{im}\underset{j\≠i}{\mathrm{\Σ}}{U}_{jm}\left(G_{ij}{\mathrm{sin\δ}}_{ijm}-B_{ij}{\mathrm{cos\δ}}_{ijm}\right)+Q_{ic}^{+}-Q_{ic}^{-}\≤Q_{id}^{+}& i\∈NP,k\∈S_0,m\∈S_1\\ U_{i\min }\≤U_{ik}\≤U_{i\max }& i\∈NN,k\∈S\\ Q_{ic}^{-}\≤0& i\∈NP\\ Q_{ic}^{+}\≥0& i\∈NP\\ Q_{id}^{-}\≤0& i\∈NP\\ Q_{id}^{+}\≥0& i\∈NP\end{array}\right.$

The P_ikAnd Q_ikRespectively state k lower nodes i injection active power and reactive power, G_ijAnd B_ijRespectively node i with J transconductance and mutual susceptance, δ_ijkFor state k lower nodes i and j phase difference of voltage, δ_ijmFor state m lower nodes i and j voltage Phase angle difference, U_ikFor state k lower nodes i voltage magnitude, U_imFor state m lower nodes i voltage magnitude, U_jkFor state k lower nodes J voltage magnitude, U_jmFor state m lower nodes j voltage magnitude, U_imin、U_imaxRespectively the allowable voltage lower limit of node i and on Limit,WithCapacitance and reactance capacity are increased newly for node i,WithIncrease the lower and upper limit of SVC capacity newly for node i；

NN is node serial number set, and NP is that alternative reactive power compensator installs node serial number set；

S is combination flow state numbering set, S₀Based on Tide of Planning status number, S₁For the lower trend of 1min new energy fluctuation Status number set, the combination flow state numbering set S=S₀∪S₁。