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                  地址:湖北省襄陽市江山南路6號
                  Tel:13508660044
                  E-mail:xfzhelec@163.com
                無功補償容量計算方法
                發(fā)布者:正涵電氣 發(fā)布時間:2024-03-23 14:57:50 點擊次數(shù): 關(guān)閉
                 無功補償容量的計算可以根據(jù)負荷的最大功率、補償前的功率因數(shù)及要求補償后達到的功率因數(shù),用下式計算確定:

                Q =α*P*(tanφ1—tanφ2)

                式中:Q — 所需補償?shù)目偀o功功率,kvar;

                      α— 平均負荷系數(shù),取0.7~0.8;

                      P — 用戶最大負荷,kW;

                      tanφ1—補償前平均功率因數(shù)角

                          tanφ2—補償后平均功率因數(shù)角

                或    Q =α*P*q

                q — 補償率,kvar / kW (可從附表中查?。?br />

                cosφ1

                cosφ2

                0.80

                0.81

                0.82

                0.83

                0.84

                0.85

                0.86

                0.87

                0.88

                0.89

                0.90

                0.91

                0.92

                0.93

                0.94

                0.95

                0.96

                0.50

                0.981

                1.008

                1.035

                1.060

                1.086

                1.117

                1.138

                1.166

                1.192

                1.219

                1.246

                1.276

                1.305

                1.338

                1.368

                1.404

                1.442

                0.51

                0.939

                0.966

                0.933

                1.018

                1.044

                1.070

                1.106

                1.134

                1.160

                1.187

                1.214

                1.244

                1.273

                1.306

                1.336

                1.372

                1.410

                0.52

                0.890

                0.917

                0.945

                0.969

                0.995

                1.021

                1.047

                1.075

                1.101

                1.128

                1.155

                1.185

                1.217

                1.247

                1.277

                1.313

                1.351

                0.53

                0.819

                0.876

                0.903

                0.928

                0.954

                0.980

                1.006

                1.034

                1.060

                1.087

                1.114

                1.144

                1.173

                1.120

                1.206

                1.236

                1.272

                0.54

                0.808

                0.835

                0.862

                0.887

                0.913

                0.939

                0.965

                0.993

                1.019

                1.046

                1.075

                1.103

                1.133

                1.165

                1.195

                1.231

                1.269

                0.55

                0.766

                0.793

                0.820

                0.815

                0.871

                0.8970.859

                0.923

                0.951

                0.977

                1.004

                1.031

                1.061

                1.090

                1.123

                1.153

                1.189

                1.227

                0.56

                0.728

                0.755

                0.782

                0.807

                0.829

                0.859

                0.885

                0.913

                0.939

                0.966

                0.991

                1.023

                1.052

                1.085

                1.115

                1.151

                1.189

                0.57

                0.691

                0.718

                0.745

                0.770

                0.796

                0.822

                0.846

                0.876

                0.902

                0.929

                0.956

                0.986

                1.015

                1.048

                1.078

                1.114

                1.520

                0.58

                0.655

                0.682

                0.709

                0.734

                0.760

                0.786

                0.812

                0.840

                0.866

                0.893

                0.920

                0.950

                0.979

                1.012

                1.042

                1.078

                1.116

                0.59

                0.618

                0.645

                0.672

                0.697

                0.723

                0.749

                0.775

                0.803

                0.829

                0.856

                0.883

                0.913

                0.942

                0.975

                1.005

                1.041

                1.079

                0.60

                0.583

                0.610

                0.637

                0.662

                0.688

                0.714

                0.740

                0.768

                0.794

                0.821

                0.848

                0.878

                0.905

                0.940

                0.970

                1.006

                1.044

                0.61

                0.549

                0.576

                0.603

                0.628

                0.654

                0.680

                0.706

                0.734

                0.760

                0.787

                0.841

                0.844

                0.873

                0.906

                0.936

                0.972

                1.010

                0.62

                0.515

                0.547

                0.560

                0.594

                0.620

                0.640

                0.672

                0.700

                0.726

                0.753

                0.780

                0.810

                0.839

                0.872

                0.902

                0.938

                0.974

                0.63

                0.481

                0.508

                0.535

                0.560

                0.586

                0.612

                0.638

                0.666

                0.692

                0.719

                0.746

                0.776

                0.805

                0.838

                0.868

                0.904

                0.942

                0.64

                0.450

                0.477

                0.504

                0.529

                0.555

                0.581

                0.607

                0.635

                0.661

                0.688

                0.715

                0.745

                0.774

                0.807

                0.837

                0.873

                0.911







                附表:每kW負荷所需無功補償率值查取表


                cosφ1

                cosφ2

                0.80

                0.81

                0.82

                0.83

                0.84

                0.85

                0.86

                0.87

                0.88

                0.89

                0.90

                0.91

                0.92

                0.93

                0.94

                0.95

                0.96

                0.65

                0.417

                0.444

                0.471

                0.496

                0.522

                0.548

                0.574

                0.602

                0.628

                0.655

                0.682

                0.712

                0.741

                0.774

                0.804

                0.840

                0.878

                0.66

                0.386

                0.415

                0.442

                0.467

                0.493

                0.519

                0.545

                0.573

                0.599

                0.626

                0.654

                0.683

                0.712

                0.745

                0.775

                0.811

                0.849

                0.67

                0.357

                0.384

                0.411

                0.436

                0.462

                0.488

                0.514

                0.542

                0.566

                0.595

                0.622

                0.652

                0.681

                0.714

                0.744

                0.780

                0.818

                0.68

                0.327

                0.354

                0.381

                0.406

                0.432

                0.458

                0.484

                0.512

                0.538

                0.565

                0.594

                0.622

                0.651

                0.684

                0.717

                0.750

                0.788

                0.69

                0.297

                0.324

                0.351

                0.376

                0.402

                0.428

                0.454

                0.482

                0.508

                0.535

                0.562

                0.592

                0.621

                0.654

                0.683

                0.720

                0.758

                0.70

                0.270

                0.297

                0.323

                0.349

                0.375

                0.401

                0.427

                0.455

                0.481

                0.508

                0.535

                0.565

                0.594

                0.627

                0.657

                0.693

                0.731

                0.71

                0.241

                0.268

                0.295

                0.320

                0.346

                0.372

                0.398

                0.426

                0.452

                0.479

                0.506

                0.536

                0.565

                0.598

                0.628

                0.664

                0.720

                0.72

                0.212

                0.239

                0.266

                0.291

                0.317

                0.343

                0.371

                0.397

                0.425

                0.450

                0.477

                0.507

                0.536

                0.569

                0.599

                0.635

                0.673

                0.73

                0.185

                0.212

                0.239

                0.264

                0.290

                0.316

                0.342

                0.370

                0.396

                0.423

                0.450

                0.480

                0.509

                0.542

                0.572

                0.608

                0.646

                0.74

                0.157

                0.184

                0.211

                0.236

                0.262

                0.288

                0.315

                0.342

                0.368

                0.395

                0.425

                0.4520

                0.481

                0.514

                0.546

                0.580

                0.618

                0.75

                0.131

                0.158

                0.185

                0.210

                0.236

                0.262

                0.288

                0.316

                0.342

                0.369

                0.396

                0.426

                0.455

                0.488

                0.518

                0.554

                0.592

                0.76

                0.103

                0.130

                0.157

                0.182

                0.208

                0.234

                0.260

                0.288

                0.316

                0.341

                0.368

                0.398

                0.427

                0.460

                0.492

                0.526

                0.563

                0.77

                0.078

                0.105

                0.132

                0.157

                0.183

                0.209

                0.235

                0.263

                0.289

                0.316

                0.343

                0.3730

                0.402

                0.435

                0.465

                0.501

                0.539

                0.78

                0.052

                0.079

                0.106

                0.131

                0.157

                0.183

                0.209

                0.237

                0.263

                0.290

                0.317

                0.347

                0.376

                0.409

                0.439

                0.475

                0.513

                0.79

                0.024

                0.051

                0.078

                0.103

                0.129

                0.155

                0.181

                0.209

                0.235

                0.262

                0.289

                0.319

                0.348

                0.381

                0.411

                0.447

                0.485

                0.80


                0.026

                0.052

                0.078

                0.104

                0.130

                0.157

                0.183

                0.210

                0.238

                0.266

                0.294

                0.326

                0.355

                0.387

                0.421

                0.458

                0.81



                0.026

                0.052

                0.078

                0.104

                0.131

                0.157

                0.180

                0.212

                0.240

                0.268

                0.298

                0.329

                0.361

                0.395

                0.432

                0.82




                0.026

                0.052

                0.078

                0.104

                0.131

                0.158

                0.186

                0.213

                0.242

                0.272<, /SPAN>

                0.303

                0.335

                0.369

                0.406

                0.83





                0.026

                0.052

                0.079

                0.105

                0.132

                0.160

                0.188

                0.216

                0.246

                0.277

                0.309

                0.343

                0.380

                0.84






                0.026

                0.053

                0.079

                0.106

                0.134

                0.162

                0.190

                0.220

                0.251

                0.283

                0.317

                0.354

                0.85







                0.026

                0.053

                0.080

                0.107

                0.135

                0.164

                0.194

                0.225

                0.257

                0.291

                0.328

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